To discern edge and noise in multiresolution edge detection used single threshold, we put forward a kind of adaptive threshold and improve the method of edge linking.
After correlation detection step, noise pixels in the image sequences are almost suppressed, and only target pixels and a few clutter pixels can pass the detectionthreshold.
The first is the endpoint detection based on fractal dimension. It utilizes fractal dimension superiority and overcomes the difficulty of decision threshold in noise environment.