【摘要】 透明土试验技术实现了土体内部可视化,其变形测量的获取目前多通过与透明土相适应的透明土土体变形测量系统进行。该系统利用片状激光实现了对透明土的内部切片观察,通过获取激光散斑图像结合图像处理方法分析得到土体变形的情况。但是该系统在获取散斑图像时并没有考虑到激光在透明土试样内的散射特点及其对散斑图像的影响,存在一定的局限性。对此,通过对透明土中激光散射现象进行观测,归纳了透明土中激光散射的特点,并就激光散斑图像获取进行分析改进,同时应用图像处理技术解决了图像获取过程中可能产生的变形问题。更多还原

【Abstract】 Transparent soil experimental technology realizes the internal visualization in soil. The deformation measurement of transparent soil can be achieved by transparent soil deformation measure system which is fit to transparent soil. This system uses laser sheet to realize the observation inside and analyzes laser speckle images which are got in the process of experiment to get soil deformation by image process method. But this system does not consider about the characteristics of laser scattering and its effect of speckle image when obtaining speckle images,it is limited. Therefore the phenomenon of laser scattering in transparent soil was observed and the characteristics of laser scattering were generalized,then the obtaining of speckle images were analyzed and improves and the problem of anamorphose in the process of obtaining speckle images were solved by image process method.更多还原