It’s really interesting how the downsampled chromaticity looks basically identical to the original chromaticity, while the downsampled luminance is noticeably lower quality than the original. I wonder why humans are less sensitive to chromaticity than luminance—does this play some role in survival?
colinsteidtmann
@weinatalie, today I learned the reason why we're less sensitive to chromaticity differences than luminance differences. According to https://faculty.washington.edu/chudler/retina.html, our rods (in the eye) detect luminance while our cones (in the eye) detect chromaticity, and more importantly, we have 120 million rods while only 6 million cones!
It’s really interesting how the downsampled chromaticity looks basically identical to the original chromaticity, while the downsampled luminance is noticeably lower quality than the original. I wonder why humans are less sensitive to chromaticity than luminance—does this play some role in survival?
@weinatalie, today I learned the reason why we're less sensitive to chromaticity differences than luminance differences. According to https://faculty.washington.edu/chudler/retina.html, our rods (in the eye) detect luminance while our cones (in the eye) detect chromaticity, and more importantly, we have 120 million rods while only 6 million cones!