Abstract In this paper, a new generating technique of sinusoidal fringes for 3D shape measurement is presented. Specifically, a sinusoidal fringe is generated by expanding the inverted image of a filled binary sinusoidal pattern in a specified direction, and further, the phase shift is realized by switching the backlight sources of a set of sinusoidal patterns. In theory, sinusoidal fringes can be formed whether the projection is focused or defocused. Moreover, the technique has the potential for high frame rates due to the way the phase shift is performed. In particular, since the high shape precision of the binary sinusoidal pattern and the high accuracy of the phase shift can be easily realized by the photolithography process, the technique is very easy to implement.

中文翻译：

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一种生成用于 3D 形状测量的相移正弦条纹的新方法

摘要 本文提出了一种新的正弦条纹生成技术，用于3D形状测量。具体地，通过将​​填充的二元正弦图案的倒像向指定方向展开而产生正弦条纹，进而通过切换一组正弦图案的背光源来实现相移。理论上，无论投影是聚焦还是散焦，都可以形成正弦条纹。此外，由于执行相移的方式，该技术具有实现高帧率的潜力。特别是，由于二元正弦图形的高形状精度和相移的高精度可以通过光刻工艺轻松实现，因此该技术非常容易实现。