I'm working with raw camera data where the color values are in full float. In RGB space represented as 3D cartesian coordinate, every color can be plotted as a vector in the positive x,y,z coordinates. What does the magnitude, or the length of the vector represent? Originally I interpreted as intensity or luminance of the color value. But I'm getting confused over another concept, which is the sum of all 3 colors component. So what does the sum of all 3 color components represent and what does the vector length of the RGB vector represent?
What does the vector length of a rgb color in vector space mean
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