对数尺度影射的传递函数在直接体绘制中的应用

体绘制中传递函数的手工设定对不同属性区间具有不同的敏感度。提出了一种基于对数尺度的传递函数的实施技术,它可以直接把图像中感兴趣区域的透明度与浓度的传递函数的值域设置在易于调节的较大几何空间中而又能获得非常精细的结果,以提高传递函数设定的灵敏度和可操作性。

An Application of Transfer Function on a Logarithmical Scale in Direct Volume Rendering

Manually adjustment and setting of a transfer function shows up different sensitivities in different ranges of voxel＇s properties.This paper presents an application of transfer function on a logarithmical scale that can directly microcosmically adjust transfer curve＇s key points in a bigger geometric region in a small value limit,and it can obtain the meticulous multilayered 3D-reconstruction results and improve the controllable sensitivity of transfer function to a large extent.