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说明：体绘制实现三维重建。 描述：Ray-casting（光线投射）算法对 DICOM 等格式的切片进行三维重建． 体绘制：不同于面绘制，面绘制需要生成中间几何图元，而体绘制是直接绘制，内容需求较面绘制小；每切换一个视角需要重新对所有的像素点进行颜色、透明度等计算，需要时间比面绘制长。

These MATLAB functions were created for the book Digital Image Processing Using MATLAB DIPUM by R C Gonzalez R E Woods and S L Eddins Prentice Hall 2004 ISBN 0130085197 The functions supplement and extend the image processing functionality of MATLAB and the Image Processing Toolbox both offered by The MathWorks ">These MATLAB functions were created for the book Digital Image Processing Using MATLAB DIPUM by R C Gonzalez R E Woods and S L Eddins Prentice Hall 2004 ISBN 0130085197 The functions supplement and extend the image processing functionality of MATLAB and the Image Processing Toolbox bot [更多]