Searched refs:fxx (Results 1 – 1 of 1) sorted by relevance
1457 float fxx = strength[y][x-1] - strength[y][x] - strength[y][x] + strength[y][x+1]; in db_SubPixel() local1461 float denom = (fxx * fyy - fxy * fxy) * (float) 2.0; in db_SubPixel()1476 float dy = (fxx * fy - fxy * fx) / denom; in db_SubPixel()