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During 3-d detection of objects with same reflectance by laser triangulation, profile extraction error may appear because of loss of stripes.
在用激光三角法对同质物体进行三维探测中，可能因为条纹缺陷等原因出现轮廓提取误差。
Combined with the Angle error extraction method mentioned above, the amplitude-phase imbalance is calibrated effectively. Thus, the measuring precision of Angle error is higher.
结合上述角误差提取方法，各通道间的幅相不平衡得到有效校正，因此提高角误差测量精度。
A novel lossless data-hiding scheme is presented by which the original image can be restored without error after extraction of an embedded message.
提出一种无损信息隐藏方法，接收端不但可以提取额外嵌入的秘密信息，而且可以无损恢复原始图像。
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