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In order to improve the reverse circulation(RC) pumping performance and enhance the effect of RC, the suction-type RC bit on the basis of ejection theory was designed. And with theoretical calculations, computational fluid dynamics(CFD) and experiment, pressure field and velocity field produced by different angle inner nozzles were studied. It was discussed the feasibility of suction principle in...
In this paper we propose a novel texture image segmentation algorithm base on Nonsubsampled Contourlet Transform and SVM. Texture feature of image is extracted through decomposing image which uses the characteristic of multi-scale and multi-directional of Nonsubsampled Contourlet transform, and then, classifying the Feature Image by K neighbor classification algorithm and training support vector machine...
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