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Cross Polarisation Explained by Grzegorz Baran

#polarisation #pbr #crosspolarisation #polarization #crosspolarization #realitycapture In this video I am trying to explain the polarisation and cross polarisation phenomenon and present how it can be used as a tool for reality capture. This is definitelly something worth to know 'good to know' when we deal with any shiny or reflective surface capture. In details I present - how polarisation and crosspolarisation works - how to use polarisation filters - the real color of stainless steel, gold and silver metals after we remove all reflections and glares from them - difference between linear and circular polarisation filters I hope someone finds this video useful. If you like it and want me to create and share even more content like this one, please subscribe to my channel and leave the thumbs up. Also I would appreciate if you share this video to anyone who might find it helpful as it really helps to grow this channel. Big thanks for watching and for your support. For those interested here is my Artstation profile: https://www.artstation.com/gbaran Cheers! Grzegorz Baran Btw. big thanks to Roy Streicher who pointed me out that I wasn't correct regarding to metal surface color. He helped me to understand that there are two different type of surfaces.. metals and non-metals (dielectrics and non-dielectrics) Metals reflect polarised light while non-metals depolarise it. It is because metal atoms have pararel layered structure so they reflect the light under the same angle while non-dielectics(non metals) are more random and when the light hits the surface it enters it and bounces back in more chaotic manner (depolarised). So nondielectircs (nonmetals) depolarise reflected light. So this is why we can cut the glare form non-dielectics but we can still see the surface color information as it is being transmited by depolarised light and filter doesnt cut it while when the polarised light hits the metal surface, it reflects back polarised so the color information with glare is cut by the polariser. In my experiment I was able to see the silver as I saw the oxidised layer which is non-dielectric (isn't metal) Maybe will cover it in a video about what colors are :) Anyway I was wrong telling that with crosspolarisation we can distingush silver from stainless steel metal.. we can't .. my bad :( ---- Music for all music-right claimers: I composed all the music for all my videos with this one included. The music is composed with use of purchased and licensed for commercial use content (https://www.loopmasters.com)