此函数用于交互式查看任何类型的2D、3D和4D图像，如CT和MRI。
This function can be used to interactively view any kind of 2D,3D and 4D image volumes like CT and MRI.
允许在二维切片中进行分割、距离测量或ROI选择。
Allowing segmentation and distance measurements or ROI selection in 2D slices.
包括最大强度投影（MIP）、体渲染（VR）、切片渲染以及着色和Phong阴影的体渲染。
It includes Maximum intensity projections (MIP), Volume Rendering (VR) , Slice render, and colored and Phong shaded Volume rendering.
体素不透明度和颜色表可以随时更改，也允许ISO表面类型的渲染。
Voxel opacity and color tables can be changed on the fly allowing also iso surface kind of renders.
快速渲染算法将三维体渲染为二维图像，该算法基于剪切扭曲变换的Matlab实现，采用了剪切切片而不是旋转观察射线。
The fast render algorithm which renders a 3D volume to a 2D image, is based on a Matlab coded implementation of the Shear-Warp transform, in which instead of rotating the viewer rays the slices are sheared.
两个主要的Matlab文件为：
viewer3d.m : GUI交互界面
通过剪切扭曲转换将体数据渲染为二维图像的函数
There are two major Matlab files:
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viewer3d.m : The interactive GUI
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render.m : The function which renders volume data with the shear-warp transform to an 2D image.
本函数支持的文件格式包括：
Matlab Files (.mat)
Dicom Files ( .dcm , .dicom )
V3D Philips Scanner ( .v3d )
GIPL Guys Image Processing Lab ( .gipl )
HDR/IMG Analyze ( .hdr )
ISI Files ( .isi )
NifTi ( .nii )
RAW files ( .raw , .* )
VMP BrainVoyager ( .vmp )
XIF HDllab/ATL ultrasound ( .xif )
VTK Visualization Toolkit ( .vtk )
Insight Meta-Image ( .mha, .mhd )
Micro CT ( .vff )
完整源码下载地址：
http://page2.dfpan.com/fs/9ldc7jc22201a2d9163/
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