@Override
protected int[] filterPixels(int width, int height, int[] inPixels, Rect transformedSpace) {
int index = 0;
int[] outPixels = new int[width * height];
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
int pixel = 0xffffffff;
for (int dy = -ySize; dy <= ySize; dy++) {
int iy = y + dy;
int ioffset;
if (0 <= iy && iy < height) {
ioffset = iy * width;
for (int dx = -xSize; dx <= xSize; dx++) {
int ix = x + dx;
if (0 <= ix && ix < width) {
pixel = PixelUtils.combinePixels(pixel, inPixels[ioffset + ix], PixelUtils.MIN);
}
}
}
}
outPixels[index++] = pixel;
}
}
return outPixels;
}
