nyakasko / ImageAndVideoAnalysis

Prewitt edge detector: gradient filter és nonmaxima-suppression (NMS), Thresholding algorithm by Otsu, Detection of circular object by edge detection and Hough transform for circles, Motion tracking of feature points and dense optical flow

ImageAndVideoAnalysis

1. Prewitt edge detector: gradient filter and nonmaxima-suppression (NMS)

Output is two images: 1. gradient magnitute; 2. final result after NMS.

Input:

Prewitt edge detection:

Nonmaxima-suppression:

2. Thresholding algorithm by Otsu

Output: thresholded image and obtained threshold value.

Input:

Output:

3. Circle Hough Transform

Output: 1. accumulator image; 2. input image with objects detected in given range of diameters

Input:

Output: