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// returns diff (not similarity) static float bwImageSectionsSimilarity_firstVirtual(IBWImage big, BWImage pat, int x, int y, float max) { int wp = pat.getWidth(), hp = pat.getHeight(); int w = big.getWidth(), h = big.getHeight(); float diff = 0; for (int yy = 0; yy < hp; yy++) for (int xx = 0; xx < wp; xx++) { diff += Math.abs(big.getFloatPixel(x+xx, y+yy)-pat.getPixel(xx, yy)); if (diff > max) ret max+1; } ret diff; }