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提出一种基于图像元相关的区域搜索匹配算法,利用相似材料模型变形前后测点图像元的相关性,进行测点的位移搜索。讨论了在纹理相关测量时,测量区域的选择对相关性及测量的影响,应尽可能采用增加相关性的措施,提高测量的可靠性。图像相关法位移测量可进行无网格点的非接触测量,解决自动网格法测量中可能存在的丢失重要位移信息的问题。
This paper proposes a region search matching algorithm based on image element correlation. By using the correlation of image elements before and after deformation of similar material model, the displacement search of measurement points is carried out. The influence of the choice of measurement area on the correlation and measurement during the texture-related measurement is discussed. Measures to increase the correlation should be adopted to improve the reliability of the measurement. Image correlation method displacement measurement can be non-contact point-free measurement of the grid to solve the possible loss of automatic measurement of important displacement displacement information issues.