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3DView (written by Leonardo M. Rocha with supervision of Alexandre X. Falcão)

We have developed a software tool for fast 3D visualization of medical images, called 3Dview. Although 3DView provides volume rendering based on opacity classification and maximum intensity projection, it was mainly designed for fast visualization of objects resulting from 2D/3D image segmentation. In this context, its input can be the output of the software tools: Livewire and IVS, which have been developed based on the image foresting transform.

Considering that less than 15% of the voxels are labeled as an object, the most interesting approaches to address the speed problem use spatial data structures that encode the presence and/or absence of high-opacity voxels to eliminate computation in transparent as well as high opacity regions of the volume. Among these approaches, two of the most successful techniques have been shell rendering (SR) and shear-warp rendering (SWR). 3DView is based on a new approach, called shell rendering with shear-warp factorization (SRSW), which combines the positive aspects of SR and SWR to obtain further speed up gains without affecting the rendition quality. Its main features are:

You can download 3Dview for linuxhere The following screenshots illustrate some of its features.

\begin{figure}\epsfxsize =16cm \centerline{ \epsfbox{fig_slices.ps}}\end{figure}

\begin{figure}\epsfxsize =16cm \centerline{ \epsfbox{fig_clip.ps}}\end{figure}

\begin{figure}\epsfxsize =16cm \centerline{ \epsfbox{fig_sequencia.ps}}\end{figure}

\begin{figure}\epsfxsize =16cm \centerline{ \epsfbox{fig_classificacao.ps}}\end{figure}

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Leonardo Marques Rocha 2004-03-10