Sharpen bitmap using Convolution

Sharpen bitmap using Convolution

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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