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Composite phase-shifting algorithm for three-dimensional shape compression

机译：三维形状压缩的复合相移算法

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摘要

With recent advancements in 3-D imaging and computational technologies, acquiring 3-D data is unprecedentedly simple. However, the use of 3-D data is still limited due to the size of 3-D data, especially 3-D video data. Therefore, the study of how to store and transmit the 3-D data in real time is vital. We address a technique that encodes a 3-D surface shape into a single 24-bit color image. In particular, this image is generated by advanced computer graphics tools with two primary color channels encoded as sine and cosine fringe images, and the third channel encoded as a stair image to unwrap the phase obtained from the two fringe images. An arbitrary 3-D shape can then be recovered from a single image. We test 3-D shapes with differing levels of complexity along with various image formats. Experiments demonstrate that, without significantly losing the shape quality, the compression ratio can go up to 1:36.86, compared with the native smallest possible 3-D data representation method.
机译：随着3D成像和计算技术的最新发展，获取3D数据变得前所未有的简单。但是，由于3-D数据，特别是3-D视频数据的大小，所以3-D数据的使用仍然受到限制。因此，研究如何实时存储和传输3D数据至关重要。我们提出一种将3D表面形状编码为单个24位彩色图像的技术。特别是，此图像是由高级计算机图形工具生成的，其中两个基色通道编码为正弦和余弦条纹图像，第三个通道编码为阶梯图像，以解开从两个条纹图像获得的相位。然后可以从单个图像恢复任意3-D形状。我们测试具有不同复杂程度的3-D形状以及各种图像格式。实验表明，与原始的最小的3D数据表示方法相比，压缩比可以提高到1：36.86，而不会显着降低形状质量。

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