ImageTypes
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Univariate Images
Univariate images are m-by-n-by-1 (where m and n are pixels) array where each value in the array represents a pixel intensity value.
Multivariate Image 3 Variables
Most digital photos are "Truecolor" or "RGB" (Red/Green/Blue) and come in the form or m-by-n-by-3 where there are 3 "slabs" of pixel intensities.
Multivariate Image 3+ Variables
Images with more than 3 variables are often referred to as hyperspectral images. These arrays will be m-by-n-by-k where k might be select wavelengths or an entire spectrum for each m/n pixel.
