My point was that if you were trying to infer ‘true’ surface reflectance of objects under daylight, while only having luminance info from a single wavelegth light source, you would end up with high prediction error about the properties of those surfaces.
So yes, I was only referring to the case where the observer has a reference with which to compare the objects to. I did not have in mind the case where we would be naive observers having 0 experience with the world around us. My suggestion was motivated by my intuition about our everyday experience, and not meant to be an absolute truth about human biology.
In response to tinted sunglasses, I would venture that you would not wear them if you were trying to perform a task that involved ‘accurate’ color perception e.g. going to an art museum, watching a movie, seeing a sunset. As an aside, I do avoid them because I enjoy my sense of color perception in general.
My point was that if you were trying to infer ‘true’ surface reflectance of objects under daylight, while only having luminance info from a single wavelegth light source, you would end up with high prediction error about the properties of those surfaces.
So yes, I was only referring to the case where the observer has a reference with which to compare the objects to. I did not have in mind the case where we would be naive observers having 0 experience with the world around us. My suggestion was motivated by my intuition about our everyday experience, and not meant to be an absolute truth about human biology.
In response to tinted sunglasses, I would venture that you would not wear them if you were trying to perform a task that involved ‘accurate’ color perception e.g. going to an art museum, watching a movie, seeing a sunset. As an aside, I do avoid them because I enjoy my sense of color perception in general.