image processing - jfeaturelib, java for glcm -


i doing program using jfeaturelib searching glcm features. using haralick.java , run program using demo haralickdemo.java. want know how use horizontal neigbhor 0 degree or 90 degree only. code:

private void calculate() {         calculategreyvalues();          final int imagewidth = image.getwidth();         final int imageheight = image.getheight();         final int d = haralick_dist;         int i, j, pos;          // image not empty per default         (int y = 0; y < imageheight; y++) {             (int x = 0; x < imagewidth; x++) {                 pos = imagewidth * y + x;                  // horizontal neighbor: 0 degrees                 = x - d; //                j = y;                 if (!(i < 0)) {                     increment(grayvalue[pos], grayvalue[pos - d]);                 }                  // vertical neighbor: 90 degree //                = x;                 j = y - d;                 if (!(j < 0)) {                     increment(grayvalue[pos], grayvalue[pos - d * imagewidth]);                 }                  // 45 degree diagonal neigbor                 = x + d;                 j = y - d;                 if (i < imagewidth && !(j < 0)) {                     increment(grayvalue[pos], grayvalue[pos + d - d * imagewidth]);                 }                  // 135 vertical neighbor                 = x - d;                 j = y - d;                 if (!(i < 0) && !(j < 0)) {                     increment(grayvalue[pos], grayvalue[pos - d - d * imagewidth]);                 }             }         }

and can explain me detail of haralick.java program?


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