quantization method meaning in English
量子化方法
Examples
- 2 ) the embedded zero - tree wavelet algorithm , which is proposed by shapiro , is analyzed . regarding to its shortcomings , a new quantization method based on zero - tree is presented . in addition , this method needs to match the hvs characteristics
2 )仔细分析了shapiro的嵌入式零树编码算法，根据其在量化过程中存在的问题，提出了一种改进的零树量化算法，并在量化过程中充分考虑了人的视觉特性对于重构图象质量的影响。 - In order to improve the compression ratio of pipeline leak signals , an error - controlled quantization method is designed in this paper , and on the basis of lossless compression algorithm , a near - lossless compression algorithm is proposed and implemented in pipeline leak detection and location system
为了进一步提高管道泄漏信号的压缩比,设计了误差可控的量化方案,在管道泄漏信号无损压缩算法的基础上,提出了一种适合于管道泄漏检测定位系统的近无损压缩算法。 - We put forward an adapted wavelet packet transform method - - adapted wavelet packet transform based on r - d rule which selects the best wavelet packet base according to r - d rule , in which best quantization method and huffman coding are used . this method produces the best compression version such that the error upon reconstruction is within an upper bound fixed a given value and obtains satisfactory compression results
这种方法依据r - d准则优选出最佳小波包基，在优选过程中，用到了最佳量化法和霍夫曼编码，从而保证了在给定的失真内使得压缩比做的最高，取得了比较满意的效果，为将来在dsp上实时的实现做好了铺垫。 - It is a pop method to embed watermark in frequency field , in most literature , they embed watermark into the coefficients of fft , dct , or high - frequency of dwt using quantization method , we think that : embedding watermark into the low - frequency of audio signal dwt field can improve the robustness of watermark . the watermark is embedded in the maximum of subsection of approximate component the watermark signal using quantization method , for the same quantization size , the “ noise ” added to the signal is
在频率域嵌入水印信息,是目前一种主流的嵌入算法,在很多文献中,都是通过量化音频信号的ftf系数, dct系数,或者是dwt域的高频系数。我们认为:在小波域内的近似分量(低频系数)中嵌入水印能够提高数字水印的鲁棒性,通过量化嵌入水印的方法,将水印嵌入到近似分量中每个分段中最大值上,因为这样对于同一个量化步长,量化对象的幅值越大,所叠加的“噪声”就越小,从而提高了数字水印的不可感知性。 - Secondly , based on the shortage of full - image histogram , this thesis presents block histogram algorithm . thirdly , we study the image retrieval algorithm of color pair , and make the retrieval image having color similarity in space . finally , we apply hsv color - space corresponding to human visual characteristics to image retrieval , make use of human feeling on color to quantify the color weight , and analyze the two quantization methods
首先，对获得的图象进行预处理，使得图象的颜色特征能够准确而方便的提取；其次，针对全图直方图的不足，提出了基于子块直方图的算法；再之，在子块直方图的基础上，研究了基于颜色对的图象检索算法，使检索结果图象在空间上具有颜色相似性；最后采用了符合人类视觉特性的hsv颜色空间来进行图象检索，并利用人对颜色的感知对颜色分量进行了量化，对两种量化方法进行了研究和讨论。