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A new method for detect image's edge in gradient operators is proposed in this paper. The method combines the gradient operators with genetic algorithm and can be used to edge extraction effectively in weld image. This algorithm not only can restrain noise powerfully, but also can protect edge information effectively.
An image edge detection method of river regime is presented for river model images. This method of self-adaptive thresholding Canny edge detection can extracts the edges of river regime automatically. It not only inherits the advantages of traditional Canny Algorithm, but also uses the improved maximum variance ratio method to calculate the values of Canny gradient threshold self-adaptively. And on...
In order to extract the flat feature stars, which are used to implement the space image registration, a feature descriptor based on WLD (Weber Local Descriptor) and feature dynamic selection method is proposed in this paper. Firstly, the feature stars are extracted and described by excitation and orientation using the WLD transform. Then we utilize a dynamic feature selection algorithm (DFSA), which...
The key to restoring three-dimensional scene information accurately of a binocular stereo vision system was stereo matching. Selection of matching element and matching algorithm directly determined the effect of the stereo matching. In order to achieve accurately three-dimensional matching as far as possible, this paper had put forward a stereo matching algorithm which based on chain code vector....
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