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How to get the image pixel at real locations in opencv?
I have an image and and am transforming it with a nonlinear spatial transformation. I have a written a function that, for every pixel (i, j) in the destination image array, returns a coordinate (y, x) in the source array.
The returned coordinate is a floating point value, meaning that it corresponds to a point that lies between the pixels in the source image.
Does anyone know if there an established method in PIL or opencv to interpolate the value of this subpixel, or should I roll my own? Thanks!