Grzegorz Baran
Grzegorz Baran
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Video Announcement - The search for the Whitest WHITE
Hey everyone,
this is an announcement of incoming video I am currently working on.
I already covered the 'blackest BLACK' research with my previous one, but to narrow the albedo range for PBR materials and make this research complete I still need to cover the 'whitest' part.
This research wouldn’t make much sense without actual samples, and some of these can be really tricky and expensive to access, therefore
I would like to thank to:
- Pro-Lite Technology UK ❤️, which is the UK and Ireland distributor of Labsphere Spectralon, for providing the sample of actual Spectralon OMG!!!!
- Nix Sensor ❤️ folks for providing sample of Gore DRP - OMG again !!!
- Also would like to thank to Amelia Evershed ❤️ - an amazing Materials Artist at Ubisoft for providing me a few actual White Cliffs of Dover rocks.️
This is the list of all samples I plan to measure and compare:
- Spectralon is one of the 'whitest' non-fluorescent (non emissive) physical substances on Earth
- Gore DRP Light Diffuser - another one of the brightest substances available on Earth
- Black2.0 from Culture Hustle - purchased with next day delivery option about a week ago and still waiting for arrival. Their Black4.0 paint appeared to be just some marketing bs, so don’t have much hope for this one, but I have heard that their white is actually better, so definitely worth to compare.
- Standard white spray - Plasti-kote 3100 - it’s the same brand and type of paint I used in search for Blackest Black, just white. Don’t expect much from it except being waterproof and just white-ish.
- Standard acrylic white paint - RATEL - also don’t expect anything special from it, but who knows. The paint apparently can't be purchased anymore, but since I already have it, why not test it.
- Rock sample taken from a famous White Cliffs of Dover. I guess this is probably the whitest type of natural rock/mineral so definitely worth to try. Its really bright to be honest.
- OBA enhanced and non-OBA paper - I am still searching for best samples - with these I plan to cover optical brightening agents in more detail as its incredibly interesting subject
- White Correction Fluid - Tipp-Ex. I just found it in a store during shopping for 4£ and decided to add it to this comparison.
- probably some of every day substances like sugar or salt or maybe even a toilet paper - even just to use them as a white reference.
Since I am still at sample collection and preparation phase, feel free to drop ideas of some must haves I missed for such comparison - I mean things which don’t cost fortune and won't do any harm to me
Measurements are going to be taken with Nix Spectro2 color spectrometer.
Its going to take me a while to make this video as I really want to dive deep inside color this time, but I hope its going to be worth waiting.
Cheers and luckily, see you when it gets released!
G.
#whitestwhite #research #nixsensor #spectralon #goreDRP #pbrmaterials
Переглядів: 359

Відео

The Search for the blackest black - How BLACK is the BLACKEST PAINT?
Переглядів 1,3 тис.3 місяці тому
This video is the result of my search for the blackest BLACK. The outcome of this research is - finding a value we can safly use as a BLACKest color value of PBR materials and textures we create for CG art. - getting some options for background separation improvement which can be useful for photogrammetry and photometric stereo capures. - finding can we can set the blackest and more light absor...
Color Spectrometer in action - Intro to color measurements
Переглядів 9916 місяців тому
Hey everyone, After countless tests I can now clearly confirm that Nixsensor Spectro 2 spectrometer is far superior in every way to any other tool I previously used to measure color. It's cheaper version: Nix Mini 3 (which is actually a colorimeter) is also incredibly accurate and measurements taken with these two, so far stay very in line with the X-Rite Color Checker as well as RAL color vali...
How to deal with material / texture tiling repetition - Material Blending
Переглядів 2,1 тис.7 місяців тому
#materials #texturing #tutorial A short video made to share some theory about material / texture tiling repetition and how we deal with that on a daily basis. An example was made in Blender, but the same principle applies to any rendering system out there. Cheers! G.
Low Poly Model Alignment for PBR Texture Baking in Blender
Переглядів 2,3 тис.8 місяців тому
#photogrammetry #scanning #tutorial #blender #workflow #lowpoly In this video I present how to create and align a low poly plane for further PBR texture baking in Blender. Hope someone finds it useful. If you like it and want to me to create more content like this one, please leave tht thumbs up, drop a comment or even subscribe to my channel Big thanks to all who did it already as it really mo...
How To Recycle Polarisation Filter from old LCD Screen - DIY
Переглядів 7 тис.Рік тому
How To Recycle Polarisation Filter from old LCD Screen - DIY
PBR Color Reference List for Materials - by Grzegorz Baran
Переглядів 10 тис.Рік тому
PBR Color Reference List for Materials - by Grzegorz Baran
Photometric Stereo Technique for PBR Materials - Using Shadow to Capture Surface Detail
Переглядів 25 тис.2 роки тому
Photometric Stereo Technique for PBR Materials - Using Shadow to Capture Surface Detail
Outdoor Photogrammetry Surface Scanning for Materials with a Flash
Переглядів 21 тис.2 роки тому
Outdoor Photogrammetry Surface Scanning for Materials with a Flash
How to create 3D Scan Based Atlas Textures for surface scattering
Переглядів 13 тис.2 роки тому
How to create 3D Scan Based Atlas Textures for surface scattering
Photogrammetry Setup for Indoor 3D Prop Scanning
Переглядів 137 тис.3 роки тому
Photogrammetry Setup for Indoor 3D Prop Scanning
Automated Texture Tiling with the Unity ArtEngine
Переглядів 12 тис.3 роки тому
Automated Texture Tiling with the Unity ArtEngine
Photogrammetry vs Single Image to PBR Material technique with the Substance Alchemist - Comparison
Переглядів 24 тис.3 роки тому
Photogrammetry vs Single Image to PBR Material technique with the Substance Alchemist - Comparison
PBR Bakers Comparison - Designer - Knald - XNormal - Toolbag
Переглядів 19 тис.3 роки тому
PBR Bakers Comparison - Designer - Knald - XNormal - Toolbag
Photogrammetry Workflow - Brick Wall with the 3DF Zephyr
Переглядів 23 тис.3 роки тому
Photogrammetry Workflow - Brick Wall with the 3DF Zephyr
Photogrammetry Equipment - Backpacks
Переглядів 3 тис.3 роки тому
Photogrammetry Equipment - Backpacks
Photogrammetry workflow for surface scanning with the drone - Soil PBR Material
Переглядів 11 тис.3 роки тому
Photogrammetry workflow for surface scanning with the drone - Soil PBR Material
Ubisoft CandyShop Days 2019 - Photogrammetry use in PBR Material Creation
Переглядів 12 тис.4 роки тому
Ubisoft CandyShop Days 2019 - Photogrammetry use in PBR Material Creation
Photogrammetry workflow for surface scanning with the monopod - Gravel PBR Material
Переглядів 22 тис.4 роки тому
Photogrammetry workflow for surface scanning with the monopod - Gravel PBR Material
9 Examples of Single Image Based Material Creation with Substance Alchemist
Переглядів 17 тис.4 роки тому
9 Examples of Single Image Based Material Creation with Substance Alchemist
Environment Art - Turning a Cliff into a vista prop using photogrammetry
Переглядів 12 тис.4 роки тому
Environment Art - Turning a Cliff into a vista prop using photogrammetry
Grzegorz Baran Art - The YouTube Channel Intro
Переглядів 16 тис.4 роки тому
Grzegorz Baran Art - The UA-cam Channel Intro
Cross Polarisation Explained by Grzegorz Baran
Переглядів 23 тис.4 роки тому
Cross Polarisation Explained by Grzegorz Baran
Easy Hand Landing and Take Off with a Dji Mavic 2 Pro Drone
Переглядів 7 тис.4 роки тому
Easy Hand Landing and Take Off with a Dji Mavic 2 Pro Drone
Single Image Based Material Creation with Substance Alchemist by Grzegorz Baran
Переглядів 11 тис.4 роки тому
Single Image Based Material Creation with Substance Alchemist by Grzegorz Baran
Photogrammetry Equipment by Grzegorz Baran
Переглядів 16 тис.4 роки тому
Photogrammetry Equipment by Grzegorz Baran
The Sculpture - 3D Scanning with a DJI Mavic 2 Pro Drone by Grzegorz Baran
Переглядів 34 тис.4 роки тому
The Sculpture - 3D Scanning with a DJI Mavic 2 Pro Drone by Grzegorz Baran
Texture Scanning with a DJI Mavic 2 Pro Drone - by Grzegorz Baran
Переглядів 14 тис.4 роки тому
Texture Scanning with a DJI Mavic 2 Pro Drone - by Grzegorz Baran
DJI Mavic 2 Pro and Fly More Kit - Unboxing
Переглядів 3,8 тис.4 роки тому
DJI Mavic 2 Pro and Fly More Kit - Unboxing
Ambient Occlusion Shadows Removal by GrzegorzBaran
Переглядів 8 тис.5 років тому
Ambient Occlusion Shadows Removal by GrzegorzBaran

КОМЕНТАРІ

  • @outdoorstours
    @outdoorstours 6 днів тому

    I also work with Blender. Your video is very helpful. I hope you can post similar videos like this one often. Thanks for sharing dear. All the best to you. Have a wonderful day and see you next time again. Many Greetings from Germany ♥ Like 163

  • @rossisbudda
    @rossisbudda 12 днів тому

    I really liked this video. Maybe you can do a video on the greyest grey?

    • @rossisbudda
      @rossisbudda 12 днів тому

      like for an optical grey option to make our own reference material :)

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 12 днів тому

      @@rossisbudda Thanks. Anything between black and white can be considered as grey ;). The next video I am working on is about the search for the whitest WHITE (here is the video announcement: ua-cam.com/video/S5jxYZEokeE/v-deo.html ) I also plan to cover phenomemon of artificial optical brightening there. Unfortunately I am still at sample collection stage - thanks to some companies I managed to get some of the whitest substances on Earth already. I basically have everything I need except the last substance - White 2.0 paint from Culture Hustle - as they claim for it to be the whitest white paint available. As you can see in this vide, their Black 4.0 except being the most expensive, definitely isnt the blackest one as they state. Wondering is this the same case with their whitest WHITE. I ordered it over a month ago with the next day delivery, but still waiting :(

  • @empatikokumalar8202
    @empatikokumalar8202 12 днів тому

    I think you're using shading wrong. By shining light directly on the object, you can only get hard shadows. When you use light indirectly, that's when the real details emerge. In fact, not just one but two; For example, use indirect light with a 45 degree angle. Maybe you can create more detailed information by making one a different color.

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 12 днів тому

      Hey, this is the reason why I was experimenting with the slim light. Regarding the photometric stereo reconstruction, shadow needs to be direct when it comes to the 360 angling as the technique is based on this exact pronciple. soft shadow in 360 direction wont work, not to mention that might cause issues with angle autodetection. At the end tho, everything depends on the app and algorithm used for reconstruction. Most apps expects point light with hard shadow - so the point direct light under 45 degree angle seems to be the best choice. Of course a lot depends on surface type and level of its complexity. But as said, nothing is set in stone and the technology and tools change and differs. So whatever works for you is good. What I presented in my video is just some theory and one of many options to consider :)

  • @SRG-Learn
    @SRG-Learn 14 днів тому

    seeing that coal so close to the checkerboard was stressing, thanks for taking those risk for us!

  • @ericchen7026
    @ericchen7026 15 днів тому

    Best tutorial I have seen!

  • @j.e.711
    @j.e.711 16 днів тому

    What will be the best focal lenght for a small object on 2 x 10cm?

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 16 днів тому

      Dunno, it actually depends on the illumination, camera and subject stabilisation, distance to the subject, cameras sensor size etc. The less distortion and deeper depth of gield the better - its all about proper balance and thats it.

  • @benjaminesqueda2100
    @benjaminesqueda2100 16 днів тому

    Grzegorz, thank you so much for sharing all of this great knowleadge and effort of yours. One quick question, what about this methodology apply at complete darkness? Do you need a second light (the sun) for the full cross polarization to work? For example, at night at a room or building with no light at all or just a few handlights or so? Greetings from México!

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 16 днів тому

      You dont need any additional light to get full cross-polarisation . All additional lights are considered as a pollution and need to be dealt with (overwritten by the flash light). So the only light you need is the ring flash light set to the level that is dtronger to other lights around so they dont interfere with the capture

    • @benjaminesqueda2100
      @benjaminesqueda2100 16 днів тому

      @@GrzegorzBaranArt thanks for the reply! I'm relieved about this, now I just need to get the sync between the ring flash and my camera. I'm using the cable, but I just can't manage the synchronization of both to work at the same time, even if I change the shutter speed, ISO and aperture.

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 16 днів тому

      @@benjaminesqueda2100 dont worry, you will get there. Just be patient, take your time, try to get through manual and if its not enough, just ask on some forum/fb group of the brand you use for help and I am sure there will be someone to help you. Shooting in a total darkness are the best conditions for cross-polarisation I can imagine :) - just be careful with reflected light - I covered some details about that (light falloff and light polution) in my video about photometric-stereo captures

  • @cygnos4612
    @cygnos4612 19 днів тому

    Or you use a app like Kiri Engine and a iPhone with LiDAR ☺

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 19 днів тому

      Not sure how to response to this one. Sure, whatever works for you and meets your expectations is 100% fine. This is one of many options. You can also model such things instead of reconstructing them.. or purchase them on some 3D market, or hire a freelancer to do the job for you, or use a serious professional LIDAR scanner etc.

    • @cygnos4612
      @cygnos4612 16 днів тому

      @@GrzegorzBaranArt Also generates PBR textures with the help of some AI magic.

  • @flooblybub
    @flooblybub 21 день тому

    Brilliant work i feel like i learned a lot! Thank you very much!

  • @a.l6515
    @a.l6515 26 днів тому

    Tell me please, does the Spectro2 device measure reflection equal to "=" albedo + specular reflection or does it still separate pure albedo without taking into account specular reflection (IOR)? I want to understand whether it is worth subtracting the reflection coefficient from the obtained values ​​in order to obtain the diffuse component... For me it’s a matter of life and death, to understand, I can’t sleep peacefully until I know the answer, I’m tormented :)!

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 25 днів тому

      Hey, all Nixsensor devices: Spectro 2 but also Mini3, use a 45:0 measurement geometry (incoming measurement light at 45 degrees, sensor at 0 degrees). This will exclude the specular reflection component from the measurement by design.

    • @a.l6515
      @a.l6515 23 дні тому

      @@GrzegorzBaranArtI am very grateful that you paid attention to my question! Thank you!🤝

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 22 дні тому

      @@a.l6515 You are welcome :)

  • @Victory463
    @Victory463 29 днів тому

    i wish u explain about ev and ...use voice

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 29 днів тому

      Hey, appreciate the feedback. This is why I decided to record with voiceover in my further videos :). Yeah, the subject of EV definitely deserves more attention. Cheers!

  • @ChillieGaming
    @ChillieGaming Місяць тому

    Hwy gregorz can you tell me how to scan a tile wall with grout? And how to extract the normal and roughness of a shiny tile?

    • @GrzegorzBaranArt
      @GrzegorzBaranArt Місяць тому

      Hey, I guess exactly the same way I scanned a brick wall in one of my previous videos (ua-cam.com/video/U3AVpCA-wMo/v-deo.htmlsi=0WlWvXnNuSvPTNUh). Roughness is way more tricky tho and to extract ityou need to do some subtraction between cross-polarised and parallel-polarised data.

  • @MrGTAmodsgerman
    @MrGTAmodsgerman Місяць тому

    That pillow burn scares me a bit. Do i have to worry about it when scanning hand towel and such with a Godox AR400?

    • @GrzegorzBaranArt
      @GrzegorzBaranArt Місяць тому

      :D I dont think so, at least not as long you keep the distance from the subject - as you can see on this video I intentionally positioned the flash very close to the surface. Not to mention, while AD200 Pro I used outputs 200W, it focuses the light on quite small area while AR400 spreads its 400W on much larger/wider one. I just wanted to show that light absorption is directly related to temperature. In the video about 'whitest whites' I am currently working on I set a black paper sample on fire with the magnifying glass and the sun just within a second while I wasnt able to set a white paper sheet on fire at all no matter how long and what I did. Still not sure if this part will go into the final video but actually might :) So if you want to scan some black insect using macro lens and use some strong flash light from close distance to illuminate it, you can actually burn/damage the specimen. But if you use standard lens - which needs at least 20-30cm of distance from the subject to even get focused on it, it shouldnt be a problem at all. And even if the subject gets warmer, it wont ever get hot enough to ignite :).

    • @MrGTAmodsgerman
      @MrGTAmodsgerman Місяць тому

      @@GrzegorzBaranArt Good 😅 Thanks for the detailed answer. Glad i am not interested in captureing insects haha

  • @michalserafin6972
    @michalserafin6972 Місяць тому

    Panie Grzegorzu, czy do fotogrametrii używa pan jpg prosto z aparatu, które są po tone mapingu, czy wywołuje Pan linearne pliki? I czy widać jakąś przewagę pomiędzy 8 a 16 czy nawet 32 bit używanych fotek

    • @GrzegorzBaranArt
      @GrzegorzBaranArt Місяць тому

      Hey, I dont use JPEG at all. I always use RAW files and convert them into TIFF during image pre-processing/photoediting stage. Next, I use these TIFFs for reconstruction. Yes, there is a big difference if you do any photoediting adjustments on 8bit data in comparison to 16bits. Basically there is no space left for 8bit data to be readjusted and each tweak comes at cost of data loss. Depending on photogrammetry app, 16bits can be better for image alignment. I dont think there is much difference during the reconstruction itself (of course as long as you use 8 bits just as a data container without further tweaking. Please bear in mind that while RAW data or TIFF can be turned into JPEG, JPEG cannot be ever turned into RAW/16bit TIFF - I mean technically it can, but the data trimmed down into 8bits cannot be recvovered while reconverted back to 16bits. I dont recommend 32bits for reconstruction or image alignment. 14-16bits is totally enough. Hope that helps. Cheers!

  • @lemmonsinmyeyes
    @lemmonsinmyeyes Місяць тому

    For the light directionality, why not use a light source with a snoot? It is used to get 'shafts' of light like god rays. That is the kind of thing you are looking for right?

    • @GrzegorzBaranArt
      @GrzegorzBaranArt Місяць тому

      Not sure how would it help unless you meant it as the way to reduce the amount of environmental light bouncing (pollution). Bear in mind that the subject needs to be kept in cone of light anyway.

  • @michalserafin6972
    @michalserafin6972 Місяць тому

    Snow?

    • @GrzegorzBaranArt
      @GrzegorzBaranArt Місяць тому

      thats a very good idea and actually very interesting case. Unfortunately chances to get cold, frozen and clean snow I can use and measure in the UK are close to none during summer, and very challenging during winter so shamefully need to pass on this one :)

  • @Barnyz
    @Barnyz Місяць тому

    Great teaser, im sure the dog is going to be the whitest white, cant wait to find out 😀😀😀

    • @GrzegorzBaranArt
      @GrzegorzBaranArt Місяць тому

      Thanks Barnyz, he just told me that isn't really interested to be measured and will bite my hand off if I try ;P

  • @MorningNapalm
    @MorningNapalm Місяць тому

    Crazy detail :)

  • @AliasA1
    @AliasA1 Місяць тому

    Man I've tried for years to get my fingers on spectralon for classroom use with no luck. Very excited for this, I'd love to find an alternative (I want to show my 3D shading students the difference between "white" and actual WHITE.)

    • @GrzegorzBaranArt
      @GrzegorzBaranArt Місяць тому

      Will do my best to make this comparison as informative as possible. Even considering some serious magnifications. Yeah, I am so happy I reced samples from these companies for this video - it would not be ever complete without them. Sill a lot of work ahead, especially as mentioned I am still in sample collection phase as a few left - like whitest OBA and non OBA samples of paper and fabric etc. Cheers!

  • @krzysztofm484
    @krzysztofm484 Місяць тому

    Cześć Grzegorz. Oglądałem kiedyś sporo twoich filmów, ponieważ sam zajmowałem się grafiką 3d (głownie wizualizacje w 3ds max), sporo eksperymentowałem z fotogrametrią, przeważnie metashape lub 3ds Zephyr. Jeden z testów ostał się u mnie na kanale (nie jestem youtuberem). Doceniam warsztat i efekty, które uzyskujesz, sporo się od ciebie nauczyłem. Chciałem podziękować za wiedze i doświadczenie, którymi się dzielisz. Ostatnio po długiej przerwie wrociłem do metashape'a ponieważ byłem na wyjeździe z nowym telefonem i wpadłem na pomysł, żeby sprawdzić czy zdjęcia i klatki z filmów 4k będą wystarczającej jakości do uzyskania zadowalających rezultatów. Efekty są bardzo obiecujące biorąc pod uwagę, że wystarczy telefon i nieporównywalnie mniej czasu niż z lustrzanką. Nie jest to oczywiście pełen profesjonalizm, ale miło jest mieć model 3d oprócz zjd. czy nawet filmu. W każdym razie chętnie pooglądam twoje filmy i sam coś podziałam. Pozdrawiam

    • @GrzegorzBaranArt
      @GrzegorzBaranArt Місяць тому

      Dziekuje bardzo. Zupelnie zgadzam sie z 'mobile based photogrammetry', nawet planowalem nagrac na ten temat dluzsze video. Natomiast nie przeskoczysz fizyki i jest powod dla ktorego aparat i obiektyw sa wieksze i ciezsze. Szczerze mowiac, zjecia z drona (z wylaczeniem duzych dronow jak Inspire etc), porownywalne sa do zdjec zrobionych ze sredniej jakosci telefonu komorkowego i to trzymanego w jednej rece stojac rownoczesnie na jednej nodze ;). Pozdrawiam

    • @YN3_
      @YN3_ Місяць тому

      Мобильные телефоны с глазком линзы в 2 мм, с дикой дисторсии по краям из-за широкого угла, с ужасным ГРИП из-за диафрагмы в F/1.3 полная ерунда для сканирования, даже самые дорогие, Вы правильно сказали, физику нашего мира не обмануть. А ещё уже лет пять минимум ни одной фотографии с мобильного без обработки нейросетью получить нельзя, так что это не фото, это картинки, нарисованные встроенной нейросетью по мотивам оригинальной фотографии с сенсора, которую никто никогда не увидит.

    • @krzysztofm484
      @krzysztofm484 Місяць тому

      @@YN3_ I have pixel 7 pro and i use raw files that were not "enhanced". I realize that it's not for proffesional use case. My point is that it is blazing fast and results are much better than I expected. For me it's acceptable for making souvenirs or something. I also have Nikon DSLR which i use when I want to be sure that i have best quality possible. Try to be open minded and not maximalist.

    • @GrzegorzBaranArt
      @GrzegorzBaranArt Місяць тому

      @@YN3_ as said, physics cannot be fooled and there is a reason why professional camera and lens are bigger. But it doesnt mean that you cant scan with mobile or a drone. You can and people do. Sometimes mobile or the drone are the only options. This ground surface in my video was scanned by the M2P drone and its quality is definitelly good enough: ua-cam.com/video/i3TYuQTJedY/v-deo.html Of course the quality would be much higher with the camera and cross-polarisation etc. but if you really know what you do, its still fine. Mobile tools have apps and options (often called a PRO mode) which turn all these fake 'enchancements' off. Yes, you can scan with your mobile and get quite devent results.. of course it will be more challenging than scanning with serious equipment and result with lower quality.. but as long that quality is for someone good enough its totally fine. This is why I plan to record a video about that at some point, as its quite interesting subject. Recent mobile cameras can be really quite powerful... especially when you compare them to 10 years old DSLRs ;) So I would say, a lot depends on skill and knowledge of photographer and how much you can get from your camera, than the actual camera. Cheers!

  • @handle32169
    @handle32169 Місяць тому

    I'd like to see white textile with/without OBA detergent, curious if anything goes over 1.0

    • @GrzegorzBaranArt
      @GrzegorzBaranArt Місяць тому

      Its a good idea to add whitest textiles. Will do my best to find some samples. I plan to cover subject of OBA in detail and present OBA substances with and without ultraviolet light which makes them to illuminate. Cheers!

  • @PanphoneDZ
    @PanphoneDZ Місяць тому

    thanks

  • @molambo
    @molambo Місяць тому

    There is no way to recycle! You take the sheet all crumpled and without glue! How am I going to put this without glue and crumpled in a multimeter, thermometer, radio that an lcd! No chance! Best Buy!

  • @ThePatrvq
    @ThePatrvq Місяць тому

    Should I choose Sony a7R III vs Sony a7R IV for photogrammetry? Obviously asking because price is a factor. How much does the extra sensor pixels help?

    • @GrzegorzBaranArt
      @GrzegorzBaranArt Місяць тому

      Hey, I cant make decision for yourself, but with limited budget I would certainly pick A7RIII over way more expensive A7R4. When it coems to photogrammetry, lens is way more important to camera. Not to mention that reconstruction benefits more from higher number images than their resolution. Image resolution can make difference when it comes to any single image based reconstruction like Image2PBR or Photometric Stereo. Hope that helps. Cheers!

  • @ChillieGaming
    @ChillieGaming 2 місяці тому

    which software do u use in 2024 for photometric stereo?

  • @eugene4950
    @eugene4950 2 місяці тому

    Cool video , really great tutorial 👍 Quick question, do you really need bright flash to do this indoors ? (that flashlight seems the only thing on the market and it's not cheap :D ) Wouldn't some other light setup work just as good ? (with polarizer film) Or it needs to be directed specifically from camera direction ? ty )

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 2 місяці тому

      Thanks, I believe I answered this question already in this video and I even shared some examples. In practice, it all depends, but the short answer is: yes, you can capture with cross-polarisation without camera flash and use some LED ring instead, but you would need to capture in environmental darkness. You can even use set of external ambient lights which arent ring light, or light tent etc.. I would say, sky is the limit here, but the best results and the easiest capture process is with the flash light ring.

  • @RakyPaky
    @RakyPaky 2 місяці тому

    wouldn't it help to put the drone into S-mode to disable sensors?

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 2 місяці тому

      I guess you can, but sensors saved me many times from being hit by a drone, not to mention that switching is too much hassle since. After dozens of such landings catching the drone this way is really super easy and natural. It just takes some practice.

  • @michalserafin6972
    @michalserafin6972 2 місяці тому

    @Grzegorz Baran mam pytanie, czy najpierw robisz zestaw zdjęć z polaryzacją, a później bez? Czy najpierw od razu po dwa zdjęcia i przy każdym włączasz i wyłączasz polaryzację ?

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 2 місяці тому

      To zalezy od przypadku i tego co chcesz osiagnac. Robienie podwojnych zjec jest stosunkowo skomplikowane. Zdjecie polaryzowane i niepolaryzowane powinno byc wziete z dokladnie tej samej pozycji kamery. Mozna to obejsc poprzez automatyzacje lub podwojny skan w dwoch wersjach i reczny matching. W praktyce staram sie unikac takich przypadkow i uzywam full-crosspolaryzacji i jednej serii zdjec.

    • @michalserafin6972
      @michalserafin6972 2 місяці тому

      @@GrzegorzBaranArt Bardzo dziekuje, za tak szybką odpowiedz. Robie skany kilku toreb skurzanych, set zdjec bez polaryzacji (zakladam ze, bede zdejmowal tylko jeden filtr z lampy, zrobilem luzny zaczep, ktory pozwoli mi nie ruszyc lampy, ani aparatu) bedzie mi potrzebny do zrobienia mapy roughness. Wydaje mi sie, ze to chyba jedyny sposob, bo matchowanie sie pozniej dwoch oddzielnych setow zdjec to jakis koszmar

  • @michalserafin6972
    @michalserafin6972 2 місяці тому

    Panie kolego, szanuję za wiedzę, ale jestem graficiarzem i oczy mi krwawiły jak Pan malował tą pokrywkę:) co do farby, Montana Black ma w ofercie czarny mat o sporo niższym ciśnieniu. I malować z takiej odległości kiedy to prawie pylimy farbę na obiekcie

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 2 місяці тому

      Polecam moje ostatnie video o naczarniejszych farbach: ua-cam.com/video/vtUhUeOo5mM/v-deo.html Jestem swiadom, ze malowanie nie jest moim najmocniejszym skillem :)

  • @satyakimandal6572
    @satyakimandal6572 2 місяці тому

    was just the best video on photometric stereo! how was your result using phone flash as a light source? is it complete garbage? i am thinking about it for very small leaves!

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 2 місяці тому

      Thanks. Light is the light and depends on spectrum it covers, its intensity and clarity, but also on environmental light pollution, distance from the subject and everything I mentioned in this video. I plan to make a video about light sources but need to save about £3000 for a special devide I need to use to measure spectrum detail so it is goint to take some time. Anyway, imo the best tool for such captures is the wireless camera flash light with TTL feature to auto-adjust light intensity, as well as some decent, real camera equipped with lens, mounted on solid platform which prevents camera movement and micro-shake. Of course any light can do the job if used properly. Sure, you can use your mobile and get some results and it all depends on what do you really need and what is enough. To be honest, sometimes you dont even need photometric stereo, just some 'single image to PBR' processing tool which does the guess on values - or you dont even need a PBR data except the albedo -for example this is how I made this flower for the glass vase scene here: www.artstation.com/artwork/WBO8qQ

    • @satyakimandal6572
      @satyakimandal6572 2 місяці тому

      @@GrzegorzBaranArt Hey thank you so much for such a detailed explanation! I tried with image to material in Sampler, but imo photometric stereo prevents the blobby cloudy details made during image to material. I have not yet started a job in the industry, so a bit short on supply haha . Therefore I am considering buying a cheaper solution, I don't need very high fidelty, but it should be passable! Tried with a ring light with very soft shadows, did not turn out great! So I will have to look for some more I guess!

  • @onaligan
    @onaligan 2 місяці тому

    Thanks so much for this video

  • @LostBoyLA
    @LostBoyLA 2 місяці тому

    Do you know if the ring light can act as a slave to an existing light setup? I want it to fire when my other lights flash

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 2 місяці тому

      I think so, its just the flash at the end. As I understand it all depends on the transmitter setting

  • @mrlogo3733
    @mrlogo3733 2 місяці тому

    Hi, Is it possible to simply change the battery when the flashlight overheats?

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 2 місяці тому

      Hey, I am not sure what you mean: you can change battery anytime, usually when its out of juice. If you meant battery removal to force overheating counter reset, I dont know as you can reset overheating protection simply by turning the flash OFF and back ON without waiting 10 minutes for it to cool down. I do that sometimes when I am in a hurry, or when there is just a few final shots left to finish the capture and I already know I am gonna move to another location after so the flash will get time to cool down anyway. Its also external conditions depentend, so when I shoot in cold windy weather which helps to keep the flash at lower temperature it is ok to override this protection when needed. When I shoot in a hot sunny day, I would recomment to check flash temerature with hand before even the overheating protection kicks in and let it cool down when needed. AR400 has is a quite simple and cheap flash and a lot depends on user. As far as I remember the OFF/ON overheating protecion workaround works just 2 times in a row and the 3rd time forces you to wait 10 minutes before you can use the flash again anyway. To be honest, I never used the second reset as I I dont want to damage the flash. This protection is built for yours and flash safety. Its just an electronic counter which doesnt take any temperature reading into consideration as there is none - hence the manual option to override it. Bare in mind that the temperature doesnt affect just the bulb, but also electronic components inside. So I wouldnt strongly recommend not override the protection more than 2 times even if it is possible and even if you shoot in winted. But I never tested if it can be done through battery removal and dont have any plans to test it as I need my flash. Hope that makes sense :). Cheers!

    • @mrlogo3733
      @mrlogo3733 2 місяці тому

      @@GrzegorzBaranArt Thanks a lot for your answer,Love you! Regarding the battery, I thought it (battery) was overheating and not the lamp, so I thought to replace it if it overheats)But now I've found out that the lamp itself is overheating and it doesn't make sense. I have 3 more questions and I will be very glad if you answer: 1)When taking a portable photo in the sun, when the AR400 lamp overheats in 40 photos, it would be better to find another option.I found out that the Quixel(Epic Games) team uses the ELB 500 TTL, it is quite expensive, but the problem is not that, but that I did not find how to attach this lamps to the camera and I will have to develop and order a mount(for rig) (or ask for its parameters from Quixel) which could be a problem. Do you know any better and more powerful analogues of the AR 400?The price is not very important) 2)Also, for fast studio photogrammetry, I decided to use a continuously rotating stand and continuous series of photos to scan a large number of objects faster.This requires a very low shutter speed (1/4000;1/8000) since the object will be spinning continuously and I do not need it to be at least somehow lubricated.To do this, I will need to buy 3 Godox QT 600 or 3 Godox QT1200 (2 in front, 1 on top) the question here is whether there will be enough light (taking into account polarization) for a 1/4000 / 1/8000 shutter speed, I will test it in the studio where such equipment already exists. In your opinion, will this idea work? 3)I'm thinking of buying a Sony A7R V with 61 megapixels, is it a good choice for photogrammetry (I need 8k textures)?Maybe I don't need so many megapixels and I should buy the something simpler like Nikon D 850 with 45 megapixels, it will be 2 times cheaper.

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 2 місяці тому

      @@mrlogo3733 no probs ELV500TTL is superior to AR400 because it outputs more light and has TTL which gives advantage when it comes to outdoor captures without fixed distance. I never used it tho as it was too expensive for me and AR400 was good enough for the job. I had a feeling that Elinchrom was also providing a handle kit with their product but if not, you might need to develop your own custom handles. To be honest, nothing stops you to develop your own rig using whatever is out there on the market. For example use multiple AD200Pro flashes.. each outputs up to 200W and have TTL so when you combine 4 of them you get 800W and TTL etc. I would say, sky is the limit here. Regarding the object movement during capture - everytihng depends on how much detail you want to get from your captures. If you aim into the highest level of detail, the subject should be still during the capture, and there is even some delay recommended to make sure all imcromovement is gone too. The smaller the subject and the higher the level of detail you expect to get, the more relevant it is. If you aim just into the shape, you can even get reconstruction from video. With the object sitting still you can get a better depth of view etc. but as said, it all depends on the subject type, size, capture contitions etc. and sure, you can capture things when they move if well illuminated and you are fine to sacrifice some quality. Its all about the balance and when you want to get from it. The texture resoution from photogrammetry captures doesnt depend on matrix size, because you capture many images which next get combined into a single one. Sometimes image size can become a bottleneck when it comes to data processing. Its always better to get more smaller images than less larger, therefore, camere lens and sensors physical size are more important to image resoution. Yeah, Sony A7RV is a good camera for photogrammetry. I cant tell you about your shutter speed as it depends on camera setting, distance to the subject and amount of light, but in certain conditions it is certainly possible to shot at 1/4000 or 1/8000. Btw. bear in mind that flash duration on its full power takes about 1/300s, therefore you wont be able to utilise full amount of lught it outputs in 1/4000sec. and you will need to compensate for these. This is why turntables stops and delays shutter after they did... to compensate all of that. But as said, it all depends on what you want ot get from your capture.

  • @allievileopold2295
    @allievileopold2295 2 місяці тому

    You make it look so easy , you are a monster , great job and thanks for your time !! the video ( and your channel ) is worthy of the greatest technical tutorial !!🤯🤯

  • @dimitry.schmidt
    @dimitry.schmidt 2 місяці тому

    I struggle with similar challenges when it comes to concealing seams. The "simple" solution for that would be to create a texture specifically tailored for the intended purpose in an appropriate size where it really matters. However, the problematic aspect lies in the size of the area that needs to be scanned and processed initially. That's why I really like your approach, and for that reason, I would love to learn more about your workflow.

  • @josephbrandenburg4373
    @josephbrandenburg4373 3 місяці тому

    Really smart. Does the color equalizer tile correctly? Last time I tried it I thought I saw artifacting at the seams.

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 3 місяці тому

      THanks, I never had any tiling issues with color equaliser.. anyway, I dont use this technique anymore for scans as I developed much better and accurate solution and work directly on raw data - but this one is still an option for some hardcore cases :)

    • @josephbrandenburg4373
      @josephbrandenburg4373 3 місяці тому

      @@GrzegorzBaranArt thanks for the reply. It's reassuring. Maybe all it did was reveal the tiling errors I already had! or maybe because my version of substance (2020) is old. I'll give it another try.

    • @josephbrandenburg4373
      @josephbrandenburg4373 3 місяці тому

      It turns out, the Color Equalizer node is unique, it requires you to check a box instead of using the tiling settings. How infuriating. It's especially annoying to me because I like to scan trees, for tree bark material - and since they already tile on one side (since the tree is a cylinder), I don't want color equalizer to tile vertically! But the check-box doesn't have the option to tile horizontally, vertically, or use both, the way _everything else_ in Substance Designer does. 😵

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 3 місяці тому

      @@josephbrandenburg4373Yeah, you need to set the 'Tiled Input' flag if the input is already tiled. As said, I dont use this node too often as I found much better and less data destructive ways to handle such cases. Equalising isnt free and affects quality. Its a math based one so its pretty dumb and while can do the job for subtle cases, I found this quality loss totally unacceptable for more extreme cases - hence finding ways to reduce need of such operation - increased capture consistency, color calibration and direct pre-editing of raw-data before reconstruction etc.

  • @kkaayynniinnee
    @kkaayynniinnee 3 місяці тому

    This is a really helpful video for both my theoretical understanding and my photogrammetry efforts! Thank you!

  • @Barnyz
    @Barnyz 3 місяці тому

    Awesome video. Super detailed and very well explained in great detail. Thanks for sharing

  • @marioschadel3747
    @marioschadel3747 3 місяці тому

    Man, you were so unlucky with your screen model. I just extracted two fully intact polarizer films plus several diffuser films from an older Dell screen in under 20 minutes. The films were not even glued except for the margins.

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 3 місяці тому

      I just shared my experience without any cheating in detail. I didnt play with other screens but I heard that it depends on the screen and case and its quite random. So maybe I wasnt lucky or maybe you were very lucky. I bet the truth is somewhere in between. Cheers :)

    • @brian7android985
      @brian7android985 10 годин тому

      I have used the diffusers for diy led panels. A lot of the smaller tv/screens sheets have been glued whereas a lot of the larger were loose.

  • @Alain-lc6cz
    @Alain-lc6cz 3 місяці тому

    Nice Video 💙🥰

  • @Nicholas-pj7ts
    @Nicholas-pj7ts 3 місяці тому

    Really getting into the science of it well done! learned a lot. Have you tried using a 400w flash on the black paint or coal? What if it was put through a magnifying glass or lens? Thank you for always sharing your processes and findings. I'm a game art student that started photoscanning in part because of your tutorials, please keep up the great work!

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 3 місяці тому

      Thank you. Nah, I havent but AR400 flash ring I own spreads the light widely while AD200Pro focus it on a small area. I am sure even the coal can be set on fire this way as the smoke we see already proves that combustion took place. Magnifying glass would just focus more energy on a smaller area therefore multiply its intensity, so I am 100% sure that this way I should be able to provide enough energy to ignite any, even white paper surface.

  • @SymbolCymbals2356
    @SymbolCymbals2356 3 місяці тому

    Using something like the Marbl Orbit to rotate the camera (and background sheet) instead of the subject would mean not having to worry about the subject rolling around or being too heavy for the turntable

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 3 місяці тому

      Sure, whatever works for you bud :). Moving heavy camera around hanging on arm tho makes camera stabilisation a bit more challenging .. not to mention limited size of moving background and lack options to play with its distance to maximize benefits of light falloff... unless you have really very large and expensive orbit tool. But sky is the limit here and the option I shared is just one of many. Cheers!

  • @mishoristov
    @mishoristov 3 місяці тому

    well done mate! really good video

  • @TjeuPubben
    @TjeuPubben 3 місяці тому

    Awesome stuff Grzegorz! 🔥 Thank you for sharing! ❤️ Didn’t know you’d like to set things on fire that much 😂

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 3 місяці тому

      Hey dude <3. Actually I dont, I kind of wanted to verify if something that basically absorbs crazy amounts of light can set itself on fire just because of its color lets say.. in a hot sunny day ..and it might. Of course the flash from that distance is much stronger to the sun, but it flashes just for 1/300s while the sun can provide solid strong light for much longer. Cheers!

  • @Nysa3D
    @Nysa3D 3 місяці тому

    Może coś o skanowaniu 3d z nowym CR-Scan Ferret Pro 0,1 mm. Mogę podesłać do testów.

  • @mmkr1-gl5bg
    @mmkr1-gl5bg 3 місяці тому

    Thanks a lot, Grzegorz! I wonder why these Nix spectrometers do not provide the values in the linear space initially (I have never had one, but I think it would be more logical for a pro tool). In the case of coal powder: I suppose it just spreads the light down through the coal thus causing more light absorption. You'd have to press it really hard to minimize the space between the pieces.

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 3 місяці тому

      Linear vs sRGB is just a math conversion and linear color information to be honest is quite useless when it comes to digital color representation. So my guess would be that these spectrometers and colorimeters were designed with print/ink/paint measurements and computer screens in mind, therefore sRGB makes more sense in such case. The PCE2 I used to use, outputs linear values and it was painful to convert these into sRGB to get their digital color representation before I was able to apply them - I had to take measurements, put them into an excell file with conversion equation there first .. now I just make a measurement, take a quick look on a screen and apply these results to my digital app - usually Substance Designer - in no time. When it comes to color comparison or accuracy, it doesnt really matter as the app also outputs color information in way more accurate formats like CIELAB. I am also aware there are some color convertors on their webpage which would be cool to have in the app too but I didnt notice them there. Luckily, when you store the data through app - like I did in this video - you can access it automatically on your computer screen from any computer automatically through their dashboard (dashboard.nixtoolkit.com/) and simply export whatever you need in CSV format, so any conversion of these are quite easy for anyone who might need that. So I would rather prefer sRGB to Linear, but I totally agree that it would be cool to have a choice/option for such added somewhere to the app.. unless it is there already and I just missed that.

    • @rndvideo64
      @rndvideo64 3 місяці тому

      @@GrzegorzBaranArtYou can display the data in XYZ and Y is your linear luminance

  • @rndvideo64
    @rndvideo64 3 місяці тому

    This is the most complete comparison on black paint that cover many aspects such as coating issues, reflectivity, glosiness with a scientific oriented approach. Well done!

  • @derdiedas9592
    @derdiedas9592 3 місяці тому

    Very interesting, thanks for sharing! I think the paper might not have been ideal due to its surface texture and there could be some uncoated fibres sticking out. A printable transparency sheet could be a better surface and it would also show if the paint coating is still transparent or thick enough. A final gloss coat would make all tested coatings comparably durable without affecting the blackness.

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 3 місяці тому

      Hey, to be honest I didnt consider this option as I wasnt unaware of that, so thanks for the advice, very appreciated. I consider some different options tho.. I chose to use standard paper because it's something everyone deals with on a daily basis. I was hoping that a double coat of paint with enough time to dry would alleviate this problem to the point where the base surface wouldn't matter much. I was also considering a solid, smooth surface instead that the paint wouldn't soak into, but I found somewhere that solid surfaces are not recommended for some of these paints because they may have adhering difficulties. Finally, I considered measuring the paint itself using a liquid measuring adapter, but I decided that the method of my choice would be the most representative. Its definitely something to improve tho and consider in a future and to be honest, I might give it a try even just to see the difference. Cheers!

  • @masew2012
    @masew2012 3 місяці тому

    32:15 The Autocorrect did you dirty... *Museum Black* LOL 🤣😂

    • @GrzegorzBaranArt
      @GrzegorzBaranArt 3 місяці тому

      Yeah, good spot. I fixed that later on a dashboard :D

  • @linassapnagis2174
    @linassapnagis2174 3 місяці тому

    Wow❣️Amazing journey an super details. Thanks for you❤