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- 我们知道，图像压缩就是要寻找高压缩比、并使压缩后的图像有合适的信噪比的方法，对压缩后的图像还要能实现低失真度地恢复图像。压缩性能的评价标准之一是图像能量损失和零系数成分值。能量损失越小，零系数成分值越大，图像压缩的性能就越高。 -We know that image compression is to find a high compression ratio, and the compressed image signal to noise ratio suitable metho
Douglas-Puck_compression_algorithm
- 论述了经典的道格拉斯—普克压缩算法,分析将其应用于多边形边界数据压缩所<br>造成的图形失真现象,提出了一种增强型道格拉斯—普克压缩算法,并用实际的MapInfo 矢量数据来检核该<br>算法的可靠性。-Discusses the classic Douglas- Puck compression algorithm, the analysis applied to the boundary polygon graphics data compression, disto
Delac_Grgic_Face_Recognition
- We can group the conclusions based on a level of compression and the probe sets into two parts: i) higher compression rates (0.5, 0.3 and in some cases even 0.2 bpp) seem to be suitable for recognizing faces with different expressions ( fb prob
image-recognisition
- Actual applications require specifi c methods to reduce the infl uence of the correlation to distortions that appear when input images differ from their reference model. When the distortion model can be described analytically (such as
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- 提出了一种结合SVD的小波变换方法，对其在外弹道测量数据中的野值剔除进行了研究。对观测数据进行小波分解，将小波分解后的近似分量和细节分量组合实现相空间重构，作为SVD方法的输入观测矩阵，根据奇异 熵增量准则，对奇异值进行筛选，根据SVD逆变换重构原信号。这一方法克服了Hankel矩阵相空间构建方法数据 端点失真问题。以小波分解后分量重构的相空间可以满足正交性，进一步提高了SVD进行数据降噪和野值检测的精度。仿真数据和试验数据处理结果证明了这一方法的有效性。-Proposed a meth
clothOriginal
- Though, the SVPWM algorithm gives good performance, it gives more acoustical noise and harmonic distortion.
Presentation
- This application is developed to implement Steganography through all media. After embedding the secret file/message in the cover file, there cannot be any proportionate distortion noticed in the cover file. The steganographic file will seem exactly a
lens-distortion
- The camera s lens distortion in photogrammetry
fisheye
- 基于圆分割的鱼眼镜头图像畸变校正算法张坤-Distortion correction algorithm Kun round fisheye image segmentation based
hidepic
- 基于插值预测和块分类的低失真可逆数据隐藏_刘芳-Low distortion based reversible data interpolation block prediction and classification Hide _ Liu Fang