【Key words】 remote sensing image； image processing； image compression； significant coefficient； entropy estimation； bit-plane scaling；
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According to the texture feature of the sub-block,the sub-block threshold is determined adaptively and the position which is bigger than its threshold is selected as the important coefficient position where the watermarking is embedded.
依据图像各子块自身纹理特征,自适应确定各子块阈值,选取大于其阈值的位置作为重要系数的位置进行水印信息的嵌入。
参考来源 - 基于多尺度形态学梯度的自适应数字水印算法·2,447,543篇论文数据，部分数据来源于NoteExpress
低频重要系数采用无失真编码压缩。
The low frequency important coefficients were coded by undistorted compression.
本文通过进行人眼阈限亮度对比实验，确定了可见度计算模型中的重要系数K。
This paper develops the threshold brightness contrast experiments of human eyes, and determines the important factor K in the visibility calculation models.
本文利用投入占用产出技术，建立了新经济投入占用产出表，并对几个重要系数进行了核算研究。
By using Input Occupancy Output techniques, this paper has built up an Input Occupancy Output table for New Economy, and studied some important coefficients.
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