Remaking BBC test cards to teach you video processing
84 points by unleaded
by GL26
1 subcomments
I like the part where they talk about the color perception space. The color perception space has itself multiple representations, according to the distance definition you are taking. The one shown in the video is the CIEXYZ (1931). Since human perception is non linear, there are other definitions which take into account those non linearities to make the space more "Hilbertian", such as CIELAB (https://en.wikipedia.org/wiki/CIELAB_color_space), or CIELUV (1976, https://en.wikipedia.org/wiki/CIELUV). This article sums up well the different representations : https://math.stackexchange.com/questions/1777699/color-space...
by jlarcombe
0 subcomment
Very good. Full details of the development of Test Cards J and W here, which I read years ago and thoroughly enjoyed:
This video has the greatest "Sources and references" section I think I've seen in a YouTube video - 16 videos, over 50 webpage links, and 4 references that don't have links.
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