%0 Journal Article
%T Composed Scattering Model for Direct Volume Rendering
%A Cai Wenli
%A Shi Jiaoying
%A <br>Cai Wenli
%A Shi Jiaoying
%J 计算机科学技术学报
%D 1996
%I 
%X Based on the equation of transfer in transport theory of optical physics,a new volume rendering model, called composed scattering model (CSM), is presented. In calculating the scattering term of the equation, it is decomposed into volume scattering intensity and surface scattering intensity, and they are composed with the boundary detection operator as the weight function. This proposed model differs from the most current volume rendering models in the aspect that in CSM segmentation and illumination intensity calculation are taken as two coherent parts while in ekisting models they are regarded as two separate ones. This model has been applied to the direct volume rendering of 3D data sets obtained by CT and MRI. The resultant images show not only rich details but also clear boundary surfaces. CSM is demonstrated to be an accurate volume rendering model suitable for CT and MRI data sets.
%K Volume rendering
%K volume illumination model
%K ray casting
%K voxel
%K equation of transfer<br>图象处理
%K 复合散射模型
%K 体积再现
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=F57FEF5FAEE544283F43708D560ABF1B&aid=5EF85F23A9E110CA32A2F0C5B68AE193&yid=8A15F8B0AA0E5323&vid=708DD6B15D2464E8&iid=94C357A881DFC066&sid=DDEED1BDDBFAA8A7&eid=D98387EFB283C5E0&journal_id=1000-9000&journal_name=计算机科学技术学报&referenced_num=3&reference_num=0