[MFMC]: Correct observation codes: 1. Observe of parabola should be sampled at certain amount of points, add deltaDistanceOfParabola to do it; 2. Handel pixel out of image as edge mag 0; 3. Should multiply, rather than divide, the difference of edge direction; 4. For displacement, should use exponential function of displacement. Times message with larger than 1, to magnify the influence of constraints