What is sample mean of the pixel brightnesses within that region?
What is the Standard deviation of the pixel brightnesses within that region?
What is the Coefficient-of-variation?
What is the percentile of an unquantized brightness distribution?
What is the mode of the distribution in frequent brightness value?
What is the Signal–to–Noise ratio?
What is Chain code?
What are Chain code properties?
What is “Crack” code?
What is Run codes?
What is brightness sensitivity?
What is Wavelength sensitivity?
What is Stimulus sensitivity?
What is spatial frequency sensitivity?
What is color sensitivity?