一种结构光组合编码模式和解码算法

A combined encoding mode and decoding algorithm for structured light

为了满足高分辨率的动态三维测量,设计了一种结构光组合编解码模式。将伪随机阵列编码和单幅正弦条纹图案组合形成编码图案。单幅正弦条纹编码图案能够满足高分辨率的三维测量,通过伪随机阵列编码对单幅正弦条纹进行再编码,使得单幅正弦条纹图案能够适用于动态场景下的三维测量。为了确保相位值的准确性,设定编码参数,使得伪随机阵列子窗口中只包含一个完整周期的正弦条纹。组合图案解码算法通过伪随机阵列的窗口识别匹配,再进行窗口内的正弦条纹解码。实验结果表明了上述编解码模式的有效性。

In order to meet the high-resolution dynamic 3D measurement, a structured light combined codec mode is designed. A coded pattern is formed by combining a pseudorandom array code and a single sinusoidal fringe pattern. The single sinusoidal fringe coding pattern can meet high-resolution three-dimensional measurement, and the single sinusoidal fringe pattern is recoded by pseudorandom array coding, so that the single sinusoidal fringe pattern can be applied to three-dimensional measurement in dynamic scenes. In order to ensure the accuracy of the phase value, the encoding parameters are set so that only one complete cycle of sinusoidal fringes is included in the sub-window of the pseudorandom array. The combination pattern decoding algorithm recognizes and matches through the window of the pseudorandom array, and then decodes the sinusoidal stripes in the window. Experimental results show the effectiveness of the above encoding and decoding modes.