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This paper presents an image segmentation method based on modified Quadtree sobel operator which was applied to enhance the precision of defining the real edges of the digital images. After removes noise of the images via modified median filtering, and pre-segments the images according to their characteristics, quadtree operator merges different zones without noise by multiple-zone target segmentation...
In order to detect traffic sign effectively and quickly, firstly, this paper firstly discriminates the maximum and minimum values of the color-components R, G and B, and then ignores pixels having little color similarity with traffic sign. Secondly, it regards the points of RGB space as color eigenvector and calculates the cosine value of included angle of vectors to discriminate color similarity...
Nowadays, soft X-Ray microscopy technology is one of the hottest methods that researches and observes the biological samples of natural state, whose resolution is higher than the imaging drawing of optical microscope and near to the imaging drawing of electron microscope. The technology is simple for the preparation of biological sample, which needs only ultramicrocut. And the working procedure of...
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