块匹配搜索算法在木材弯曲变形测量中的应用

摘要

In order to improve accuracy and computational efficiency of wood bending deformation measurement and reduce matching error rate occur, with the purpose of reducing the search region to improve computational speed, the simulation analysis to compare the efficiency of four kinds of common block matching searching algorithm in video processing is used. And then through the rigid-body translational and three point bending test, the validity of four different algorithm in wood bending deformation measurement is studied. The results show that, for the wood bending deformation measurement, considering the computational efficiency and computational precision, diamond search method occupies first place, and four steps search method comes second.%为了提高木材弯曲变形的测量精度和计算效率,减少匹配错误率的发生,以减少搜索区域提高计算速度为目的,通过仿真计算分析比较了视频处理中四种常见的块匹配搜索算法的计算效率,并以木材为研究对象进行了刚体平移和三点弯曲试验.验证了四种不同算法在木材弯曲变形测量中的有效性.结果表明,对于木材弯曲变形测量,在综合考虑计算效率与计算精度的情况下,菱形搜索算法最优,四步搜索算法次之.