In this paper, we tackle the challenge of effective Transfer Function (TF) design for Direct Volume Rendering (DVR) of full-color datasets. We propose a novel TF design toolbox based on color similarity which is used to adjust opacity as well as replacing colors. We show that both CIE L*u*v* chromaticity and the chroma component of YC_BC_R are equally suited as underlying color space for the TF widgets. In order to maximize the area utilized in the TF editor, we renormalize the color space based on the histogram of the dataset. Thereby, colors representing a higher share of the dataset are depicted more prominently, thus providing a higher sensitivity for fine-tuning TF widgets. The applicability of our TF design toolbox is demonstrated by volume ray casting challenging full-color volume data including the visible male cryosection dataset and examples from 3D histology.
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机译：在本文中，我们解决了用于全彩数据集的直接卷渲染（DVR）的有效传递函数（TF）设计的挑战。我们提出了一种基于颜色相似性的新型TF设计工具箱，用于调整透明度以及更换颜色。我们表明CIE L * U * V *色度和YC_BC_R的色度分量同样适用于TF小部件的底层颜色空间。为了最大化在TF编辑器中使用的区域，我们基于数据集的直方图重整色彩空间。因此，更突出地描绘了代表数据集的更高份额的颜色，从而为微调TF小部件提供更高的灵敏度。我们的TF设计工具箱的适用性由体积射线铸造具有挑战性的全色卷数据，包括可见的男性冷冻数据集和3D组织学的示例。
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