Computes gradient

[grad, angleOfs] = hog.computeGradient(im)
[...] = hog.computeGradient(im, 'Option', optionValue, ...)

Input

• im 8-bit 1- or 3-channel source image.

Output

• grad gradient magnitudes (2-channel float matrix of same size as the image plus padding).
• angleOfs quantized gradient orientation with integers in the range [0,NBins-1] (2-channel 8-bit matrix of same size as the image plus the padding).

Options

• paddingTL Optional padding. default [0,0]
• paddingBR Optional padding. default [0,0]