First developing of ContourDetector.
implementing Hysteresis Threshold.(not completed)
Add Canny-Like Feature to my Contour detection.
It's correct but not good result because:
+ Red colors are almost same as black in RGB2GRAY image, so the Laplacian result is not expected.
+ If region filled with black, The contours are may not detected.
+ Same reason as above,  The contours next to Background are may not detected.