private void UnfilterRowSub(int nbytes) { int i, j; for (i = 1; i <= ImgInfo.BytesPixel; i++) { rowb[i] = (byte)(rowbfilter[i]); } for (j = 1, i = ImgInfo.BytesPixel + 1; i <= nbytes; i++, j++) { rowb[i] = (byte)(rowbfilter[i] + rowb[j]); } }