提出一种基于格雷码-相移的组合光编码技术, 以格雷码技术自身的误差不累加性优点保证了光编解码的稳健性, 针对格雷码对视场解析的有限性缺陷, 提出将格雷码部分作为编码的整数部分, 综合使用相移编码作为小数部分, 实现了视场空间的无级细分, 提高了编码的分辨率, 对编码技术中常见的两种错误, 使用提出的编码校正算法有效的减少了编码错误及重建误差的产生。试验结果表明这种光信号编码方法在三维测量中的有很高的稳健性。

A novel combinated coding technology of Gray and phase-shifting is proposed. This coding algorithm combines advantages of Gray code and phase-shifting code. At first, Gray code is used to avoid the accumulation of error code. Then, the Gray code and phase-shifting code are combinated, they are respective as integral and decimal part of the combination code, a infinite space segments of the view space is divided by this intergration and a high coding resolution is achieved. Morever, a code compensation algorithm is developed to overcome the usual two codeing errors for acquiring a correct code. At last, the experiments show that this optical coding algorithm is effective and robust to three-dimansional reconstruction.