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A new approach of concentric circle detection is proposed in this paper. Firstly, the image is preprocessed by denosing, edge detection, and then the circle centers are allocated by the gradient Hough transform, at last, the radius are detected by the improved one-dimensional Hough transform. The detection efficiency is enhanced by image discretization and reduced resolution ratio in the process of...
A Method, to locate eye in image by using gray projection, is presented. We utilize the gray differential projection cure of the facial image to locate eye vertically position and utilize the gray integral projection cure to locate eye horizontal position. The method can apply to not only the upright front side face, but also the upright side face, lift up face and low face. When the face in image...
An algorithm of fractal tree is hot research area in nature scenery simulation. We present a generate algorithm of fractal tree by use a controllable random transform method. This method base on fractal theory, controls some parameters of fractal tree generating in a random scope, which parameters including coordinates, length of tree branch, angle of tree branch transfer, thickness of trunk, color...
For the noise, blurry edge, bad contrast of the medical CT image, this article presents a medical CT image enhancing algorithm based on the mixture scope model of wavelet multi-scale transform. It uses wavelet multi-scale analysis to decompose the image signal to different direction sub-image, studies the different direction sub-pictorial information under the corresponding criterion by the different...
This article uses the advanced wavelet theory to perform multi-criteria transformation on the medical CT image wavelet in order to obtain directive components. The improved wavelet threshold value law is combined with the wavelet homomorphism filter corresponding to the obtained directive components to remove noise and enhance image effect, finally resulting in the multi-scale (level) enhanced images...
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