Sharpen bitmap using Convolution

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The previous exercise "Blur bitmap using Convolution". By changing the matrix of Convolution class, we can use it to sharpen bitmap.

 class Convolution {

// matrix to sharpen image
int[][] matrix = { { 0, -1, 0 }, { -1, 5, -1 }, { 0, -1, 0 } };
...


Sharpen bitmap using Convolution




more: Something about processing images in Android

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