...几何畸变; 斑点噪声; 计算机仿真 文章编号 1004-731X (2004) 10-2313-04 中图分类号 TP391.9 文献标识码 A [gap=758]Key words: synthetic aperture radar; geometrical distortions; speckle; computer simulation ..
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The robustness to geometrical distortions is not well solved in the image watermarking field at present.
图像水印的抗几何攻击能力仍是目前数字水印研究中尚未很好解决的问题。
参考来源 - 基于分块SVD和Zernike矩的鲁棒图像水印·2,447,543篇论文数据，部分数据来源于NoteExpress
The protruding display surface and the linear aberration of the lens induce the geometrical distortions that must be corrected before imaging.
由于光学镜头会产生几何畸变，加之显示器表面有一定弧度，因此成象在相纸上的图象存在着非线性的畸变。
Meanwhile, due to the utilization of information on refractive index distribution, geometrical distortions usually observed in conventional OCT images are avoided in the PICT image.
由于利用了折射率信息，投影折射率计算机层析图像消除了常规光学相干层析图像中的几何畸变。
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