光测力学中图像相关方法在土石中的应用，测量土中的应变场-In PHOTOMECHANICS image correlation method in the debris, measure the strain field in the soil

Statistical intervals can be confusing, even in the minds of those who use them often. This paper uses an example to describe the differences between confidence intervals, prediction intervals and tolerance intervals.

将采集的土图片载入MATLAB并计算其熵、灰度值等-The images collected soil load and calculate the entropy MATLAB, the gray values, etc.