在这篇论文,在为测量 3D 排水量的频率支配区域的白轻数字图象分析被提出。测量系统有特征整个地,非接触和多向方位测量。它简单,协调的光没被要求。在变丑前后的灰色的图象在二个不同射击角度用二电荷耦合器件被记录,然后 digitalized 并且由频率支配关联算术分析了。获得的 2D 排水量被用来经由数学转变提出 3D 排水量。试验性的板是在长度,在宽度的 30 公里和在高度的 10 公里的 40 公里。明确的排水量用 3D 被给精确调整框架。3D 排水量被计算并且与明确的排水量相比。错误是 4%11% 并且这个方法的可获得性被证明。用这个方法,有在高度的 140 公里的薄墙的柱体的压缩变形,在内部直径的 64 公里和在外部直径的 64.6 公里,也被测量。这个方法是合适的测量动态变丑。
In this paper, white light digital image analysis in frequency domination area for measuring 3D displacement is put forward. The measuring system has the characteristics of wholefield, non-contact and omnibearing measurement. It is simple and the coherent light is not demanded. Gray images before and after deformation are recorded using two CCDs at two different shooting angles, then digitalized and analyzed by frequency domination correlation arithmetic. The 2D displacement obtained is used to formulate 3D displacement via mathematical transformation, The experimental plate is 40 mm in length, 30 mm in width and 10 mm in height. The definite displacement is given using a 3D precise adjusting frame. The 3D displacement is calculated and compared with the definite displacement. The error is 4%-11% and the availability of this method was certified. Using this method, the compression deformation of a thin-wall cylinder with 140 mm in height, 64 mm in inner diameter and 64,6 mm in external diameter, was also measured. This method is proper to measure dynamic deformation.