Opacity transfer function;

阻光度传递函数；

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It applies to the situation that the user needs to interactively adjust the opacity transfer function to observe the varied details of the3D object.

它适用于三维重建过程中用户需要交互式地动态调整透明度变换函数，以观察三维实体的不同细节的应用场合。

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In the visualization of 3d medical images, it is common to adjust the opacity transfer function and viewing Angle frequently so that volume rendering is difficult to be realized in real-time.

在医学图像的三维可视化中，不透明度传递函数和观察角度是需要频繁调节的，因此，难以实现实时体绘制。

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