计算机工程与应用2009，Vol.45Issue(22)：135-137,143,4.DOI:10.3778/j.issn.1002-8331.2009.22.044
建立在图像识别基础上的体绘制加速方法
Volume rendering accelerating method based on image recognition
摘要
Abstract
A new algorithm (Image Recognition Volume Rendering,IRVR) is developed in this paper,which can remarkably decrease the redundant data during volume rendering.The IRVR algorithm uses the minimun cross-entropy threshold selection method to detecte the object and background voxels from a three dimensional dataset.An iterating ray tracing method combined with the objects detection sampling strategy is developed to sample the original dataset.The fast iterative method is implemented to sampling the classification dataset for locating the intersection position of the viewing ray and the original dataset.And the precise normal sampling method (for example,trilinear interpelation,spline interpolation,etc.) is applied to extract the gray value from the original dataset for volume rendering.The experiment result is given in this paper.It proves that the IRVR algorithm can improve the volume rendering speed and guarantee the quality of the volume rendering results.关键词
光线投射/体绘制/最小交叉熵/图像识别Key words
ray casting/volume rendering/minimun cross-entropy:image recognition分类
信息技术与安全科学引用本文复制引用
何元烈,陈萍,战荫伟,陈仰纯..建立在图像识别基础上的体绘制加速方法[J].计算机工程与应用,2009,45(22):135-137,143,4.基金项目
国家自然科学基金(the National Natural Science Foundation of China under Grant No.30800274) （the National Natural Science Foundation of China under Grant No.30800274）
广州市卫生局基金(No.2007-YB-159). （No.2007-YB-159）
