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The paper mainly investigates the widely-used image features and related feature selection methods in content-based image retrieval (CBIR).The texture features and shape features that could be used in the retrieval of solar images are mainly discussed. The result of the survey indicates that although the CBIR related research work in solar image retrieval is comparatively less, the existing achievements...
Due to the high demands for productivity and quality of bearing and the shortage of traditional detection methods, this paper proposes an automatic detection system based on machine vision technique. The detection system uses digital image processing technology to process the images collected by CCD camera and finish identification for the surfaces of bearing quickly and accurately. Firstly, least...
Brachytherapy is one of the major means of nasopharyngeal carcinoma treatments. The process of radioactive source delivery and the distribution of radioactive dose are two pivotal factors of brachytherapy planning. A new method for simulation of the two factors was proposed in this paper. Firstly, the CT images of the nasopharyngeal tissues were segmented and the 3D models of nasopharyngeal tissues...
Couinaud's classification of liver anatomy has been widely accepted in practice. However realizing this classification effectively is not an easy task. In this paper, a simplified segment method based on the hepatic vessel tree is proposed. This method contains four main steps: vasculature segmentation, 3D thinning, vascular tree pruning and classification, vascular projection and curve fit. The first...
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