how does matlab implement the command: imresize(<image>,<scaling factor>,'bicubic');
the other types of interpolations are easy to understand and implement. but in case of bicubic, when the scaling factor is less than 1, it does the anti-aliasing filter operation. how does this operation work?
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2 points define a line, 3 define a quadratic, and 4 define a cubic. So if you have just the two adjacent pixels, you can do a bilinear interpolation, a bicubic interpolation uses two pixels on each side, in each direction. Same things as bilinear, just using 4 pixels instead of two to get the value of the pixel "in the middle". Not sure how it does antialiasing - perhaps it blurs it a little after the interpolation. Why do you ask?