Comments by "Lawrence D’Oliveiro" (@lawrencedoliveiro9104) on "Colourspaces (JPEG Pt0)- Computerphile" video.

  1. It is also possible to stimulate the nerves into seeing colour intensities that do not correspond to any real light input.
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  2. And B&W TV worked so well because the eye is more sensitive to brightness/lightness than it is to colour.
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  3. 0 is 0, not positive. If you are encoding a signal as a signed integer, you would typically ignore the extra negative value, so that the positive and negative limits are the same. Otherwise your signal would end up with a DC offset.
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