A method proposed in this paper avoids the log-transformation in view of its drawbacks, specially the log-ratiotransformation, but normalizes the data after background correction.
鉴于对数转换的缺点，本研究提出一种非转换方法，即背景校正后直接进行数据标准化。
2
The traditional dilatancy equation of Cam-clay model was modified and the relativity between the phase transformation stress ratio and initial effective pressure was considered.
模型对传统修正剑桥模型中的剪胀性公式进行了改进，考虑了状态转换应力比与初始有效围压的相关性。
3
Based on invariance of the cross-ratio in projective transformation, this paper designed a gray artificial landmark for vision-based recognition by shape information.