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At present, the registration algorithms based on the rigidity medical image are developed and also used well in actual clinical. But the non-rigid medical image registration algorithms are still developing, therefore domestic and foreign researchers put forward various non-rigid registration algorithms. Firstly, this paper analyses the necessity of non-rigid registration. Secondly, specifies the recent...
A cause analysis model of pseudo solder for chip component is presented. Based on analyzing the causes of the chip pseudo solder, an comprehensive equation, which is composed of an ellipse equation and a circle equation, is used to fit the surface shape of chip solder joint. On the basis of that, the chip pseudo solder model is presented. All the parameters of the chip pseudo solder model are effected...
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