OpenImageR: An Image Processing Toolkit

the preprocessing steps, in case that all transformations are applied to an image, is : 1st flip image, 2nd crop image, 3rd resize image, 4th shift rows or columns, 5th rotate image, 6th zca-whitening and 7th image-thresholding. Value the output is of the same type with the input (in case of a data frame it returns a matrix) ................
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