摘要
在结构光三维(3D)重建系统中,编码模式用来解决对应点匹配问题,将直接影响测量的精度、分辨率和实时性。M阵列的结构光模式具有良好的子窗体特性,全局唯一。通过归纳结构光模式应遵守的规则,利用改进的拼片算法生成了大尺寸多元M阵列,具有2×2的子窗体特性,有8个阵列元素。提出符号选择机制,采用多条件评判方法确定8个模式符号。用设计的符号代替M阵列元素,生成一种新颖的分辨率为1 024×768的M阵列单帧二值结构光模式,以减少模式的个数及规避环境光的较强干扰。对生成的编码模式进行的实验结果表明,利用解码算法可有效地提取生成的M阵列中的符号关键点的信息,并实现3D目标重建,验证了本文编码模式的有效性。
In a three dimensional （3D） reconstruction system constructed by structured light,the encoding pattern is used to solve the problem of matching corresponding points,which can directly affect the a ccuracy,resolution and real-time of measurement.Structured light pattern based on M array has good characteristics of sub-window and globally unique. By inducing rules complied with structured light pattern,the large size and mul ti-element M array is generated using the improved splicing algorithm.The M array has the property of 2×2su b-window,and 8elements in it. Symbol selection mechanism is presented.By using multi-criteria evaluation met hod,8pattern symbols are chosen.One new single shot binary structured light pattern with resolution of 1024×768based on M array is generated using designed symbols instead of M array elements.The pattern can reduce the number of patterns and avoid the strong interference of environment light.The experimental results show that the decoding algorithm can effectively extract th e information of proposed symbol points in M array,and reconstruct the 3D objects.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2017年第9期1025-1035,共11页
Journal of Optoelectronics·Laser
基金
国家自然科学基金(61572307)资助项目
关键词
多元
M阵列
结构光
编码模式
三维(3D)重建
multi-element
M array
structured light
encoding pattern
three dimensional （3D） recon-struction
