Searched refs:fyy (Results 1 – 1 of 1) sorted by relevance
1458 float fyy = strength[y-1][x] - strength[y][x] - strength[y][x] + strength[y+1][x]; in db_SubPixel() local1461 float denom = (fxx * fyy - fxy * fxy) * (float) 2.0; in db_SubPixel()1475 float dx = (fyy * fx - fxy * fy) / denom; in db_SubPixel()