A Rapid Pre-Integrated Perspective Volume Rendering Algorithm
Perspective Volume Rendering has well knownadvantages, so it is applied widely in medical visualization. In thevisualization of 3D medical images, it is common to frequentlyadjust the opacity transfer function and viewing angle so thatvolume rendering is difficult to be realized in real-time. And intraditional perspective Shear-Warp there are the aliasing andstaircase effects resulting from under-sampling. In order toefficiently and effectively reconstruct 3D medical images, a novelRapid Pre-Integrated Perspective Volume Rendering(RPPVR)method based on Pre-Integrated Volume Rendering and Shear-Warpalgorithm is proposed in this paper. In the proposedmethod, classification coding for volume data is implemented bymaking use of the correlation of opacity transfer function andmin-max Octree data structure so that fast reconstruction can bedone when opacity transfer function and view angle change.Moreover, the aliasing artifacts resulted from under-samplingcan be eliminated by Pre-Integrated Volume Renderingtechnique incorporated the shading calculation of lighting model,thus improving the reconstruction effect. This studydemonstrates the superiority of the proposed method.
Bin Li Shanxing Ou Lianfang Tian
Dept.of Radiology and Pediatrics Guangzhou General Hospital of Guangzhou Command Guangzhou, China School of Automation Science and Engineering South China Univ.of Tech.Guangzhou, China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）