Is Y' here lightness(perceived brightness) rather than luminance since quantization error?
dvernet
What is the difference between luminance and "perceived luminance"? My understanding is that luminance is given by $$\int_{\lambda}\Phi(\lambda)V(\lambda)d\lambda$$ where $V(\lambda)$ measures how bright light at a given wavelength is perceived by the human eye and $\Phi(\lambda)$ the amount of scene radiance at that wavelength, so luminance as we've defined it is already "perceived" luminance.
whdawn
Why we use CIT, YCbCr, instead of RGB. Is it because of storage cost?
Is Y' here lightness(perceived brightness) rather than luminance since quantization error?
What is the difference between luminance and "perceived luminance"? My understanding is that luminance is given by $$\int_{\lambda}\Phi(\lambda)V(\lambda)d\lambda$$ where $V(\lambda)$ measures how bright light at a given wavelength is perceived by the human eye and $\Phi(\lambda)$ the amount of scene radiance at that wavelength, so luminance as we've defined it is already "perceived" luminance.
Why we use CIT, YCbCr, instead of RGB. Is it because of storage cost?