面向彩色物体的双目三维测量编码新方法

A Novel Encoding Method for Binocular Three-Dimensional Measurement of Color Objects

为了实现彩色物体三维(3D)形貌的精确测量,提出了一种新的面向双目立体匹配的彩色编码方法。根据三原色(RGB)颜色空间模型和光谱原理对不同颜色赋予相应的视觉编码值,设定相邻彩色条纹波长变化明显、颜色差别大、码值唯一的原则并进行编码设计;利用改进的色彩标定方法消除背景色彩的影响;实验验证了提出的彩色编码方法。结果表明,该编码新方法消除了物体彩色纹理背景的影响,满足了彩色物体三维形貌精确测量的要求,可以快速、有效地实现彩色物体的三维形貌测量。

A novel encoding method is proposed for precise binocular three-dimensional （3D） measurement of colorful objects. According to the combination of the red-green-blue （RGB） model and the spectrum analysis methods, unique visual code values are attached with different colors respectively. The color code pattern is designed based on the principles of obvious change of wavelength, evident difference in color between adjacent color stripes, and unique code values for neighbors. A color calibration optimization algorithm is proposed to achieve color compensation and eliminate color confusion during the 3D measurement processing. A series of measurement experiments are performed to acquire the 3D shape of the colorful objects. The experimental results show that the 3D shape of the colorful objects can be easily and fast obtained by using this novel encoding method.