image-degrading 中文意思是什麼
image-degrading
解釋
影像衰減-
Based on the previous work and current research, we have made the following work : ( 1 ) for robustness against jpeg compression, we analyze the invariant properties theorem during jpeg compression which was proposed in previous work, then proposed an improved scheme. based on those work, we design a watermarking algorithm, which has robustness against jpeg compression with common quality factor. in addition, the proposed algorithm can perfectly detect the watermarks without degrading the visual quality of original image
根據不同的應用需求設計相應的水印演算法是魯棒性水印的研究方向，根據這些特點，本文在前人研究的基礎上，完成了以下工作： （ 1 ）本文就抗jpeg壓縮的水印設計進行了研究，通過分析前人提出的jpeg壓縮不變性原理，發現了其在實際應用中會出現的問題，並對之提出了改進的方案，在此基礎上，設計了一種水印演算法，可以對所有常用質量因子的jpeg壓縮都免疫。 -
The synthetic source is the generalization of plane wave source, controlled illumination source, piecewise plane wave source and areal sources with phase encoding etc. by migrating the synthetic source record, the computational cost of the conventional areal shot record migration can be reduced by several times without significantly degrading the image quality
合成震源既包括了已有的平面波震源，也包括了控制照明震源，分段平面波震源和相位編碼震源。合成震源記錄疊前深度偏移方法是炮記錄偏移、平面波偏移、控制照明偏移和相位編碼面炮記錄偏移方法的推廣和統一形式。
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