embedded wavelet 中文意思是什麼
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After completing the mctf using db2 wavelet, it is well integrated with discrete wavelet transform ( dwt ) and embedded zero tree wavelet. it uses atom structure to organize the coded bit - stream to achieve the brilliant combination of three scalabilities : temporal, spatial and psnr scalabilities. and the software platform is based on vc + + 6. 0
在基於db2小波的運動補償時域濾波方法實現之後，本文將之和離散小波變換（ dwt ） 、嵌入式零樹編碼進行有機結合，並採用基於基本原子粒的數據流組織結構將分層后的數據流有效地組織起來，實現了具有時間、空間、質量三方面的完整可伸縮性的編解碼系統，系統的軟體平臺基於vc + + 6 . 0實現。 -
In the second chapter, wavelet theory, which is the theoretic basis of embedded zero wavelet coding is introduced briefly, including wavelet transform " s local characteristics, multi - resolution analysis, discrete signal ' s fast decomposition and construction, wavelet and filter group
第二章，對小波零樹編碼演算法的理論基礎? ?小波理論作了簡要的介紹，包括小波變換的時頻局部特性、多解析度分析、離散信號的快速分解與重構以及小波與濾波器組的關系。 -
Wavelet packet compression algorithm of embedded color image
嵌入式彩色圖像的小波包壓縮演算法 -
In audio robust watermark algorithm, watermark is embedded in transform domain by using the speediness, simplicity and multi - resolution of wavelet transform. when extracting watermarking, the audio is decomposed by single - level discrete 1 - d wavelet transform, and watermarking is extracted by ica based on kurtosis maximization. this method ’ s computational cost is low
音頻水印利用小波變換快速、簡單和多解析度的特點來嵌入水印，提取的時候，先對觀測音頻文件進行一級小波分解，然後用基於最大峰值的ica方法進行水印提取，這種方法避免了其他盲源分離方法必需的求逆運算，所以計算量小。 -
In semi - fragile image watermarking algorithm, a robust watermark and a fragile watermark are extracted from the third approximation coefficient of wavelet transform of the original image. the two watermarks are embedded into the third vertical and horizontal detail coefficients. when authenticating image, image can be authenticated correctly and attacked parts can be localized through comparing the original watermarks and extracted watermarks
其中，完全認證方法，利用qr分解的特性把圖像的邊緣信息嵌入到載體圖像中，演算法對各種攻擊都具有很好的敏感性;內容認證方法，從載體圖像中提取出一個脆弱水印和一個魯棒水印，並把它們重新嵌入到載體圖像中，認證時，通過兩個水印在圖像傳輸前後的變化情況來對圖像的保留價值進行評估，並準確定位受攻擊部位。 -
Wavelet subband coding method has advanced considerably in 2d image compression. many effective embedded wavelet image coding methods have already emerged. we improve the spiht algorithm by expanding the coding method used for gray image to color image of the video
本文對已有的spiht演算法進行改進，充分利用其空間方向樹能夠高效組織小波系數的優勢，將其由針對灰度圖像的編碼方法擴展為對視頻序列彩色圖像的壓縮。 -
In this paper, a gray video md - 3d - spiht algorithm is proposed, which extends the md - spiht algorithm into 3d - spiht. this method is to divide the 3 - d wavelet coefficients into some number p of different groups according to their spatial and temporal relationships, and then to encode each group independently using 3d - spiht algorithm, so that p independent embedded 3d - spiht substreams are created. multiple descriptions are created
2 、將md - spiht方法推廣應用於視頻序列，提出了灰度視頻md - 3d - spiht演算法，該演算法先對一組視頻圖象進行多級離散三維小波變換，在小波域建立空間方向樹，及對空間方向樹分組，再分別對各組進行3d - spiht編碼，即產生多個描述，且每一描述的碼流是完全嵌入式的，易於實現質量可分級編碼。 -
Then it is possible to realize high compression ratio of images. in this paper the principle of which wavelet transform can be used in images compression is discussed on basis of statistics and analysis of image ' s wavelet coefficients after wavelet decomposition. also some kinds of quantify and coding schemes are discussed including scalar quantization, vector quantization, embedded zerotree wavelets encodings run length coding, huffman coding and so on
論文對圖像經分解后的小波系數進行統計與分析，闡述了小波變換所以能夠用於圖像壓縮的道理，並在此基礎上討論了多種量化和編碼方案的設計與實現，包括標量量化、矢量量化、嵌入小波零樹編碼、行程編碼、哈夫曼編碼等，其中對jpeg2000採用的標量量化和嵌入小波零樹編碼作了重點討論和分析。 -
Basic principle of embedded zerotree wavelet compression algorithm
嵌入式小波零樹壓縮演算法的基本原理 -
Some novel enhancing morphologic translation algorithms such as mark, areaselect, bylsland, island are implemented in the experiment of this thesis. and what ' s more, making full use of overlapping movement compensation, embedded zerotree wavelet translation encoding and contend - based wavelet translation, this thesis has achieved the human - face - central video compression of the key objects
實驗中提出了一系列新型增強形態變換演算法，如mark 、 areaselect 、 byisland 、 island等，並且將交疊運動補償、零樹小波編碼、基於內容的小波變換等有機地結合起來，實現了基於人臉關鍵對象的視頻壓縮。 -
Wavelet video coding ; embedded coding ; quadtree coding
小波視頻編碼嵌入式編碼四叉樹編碼 -
Research on vibration data compress using wavelet decomposition and embedded coding of zerotrees of wavelet coefficients
小波分解及嵌入式小波系數零樹編碼在振動數據壓縮中的應用研究 -
In contrary to the brushlet, the ezw ( embedded zerotree wavelet coding ) algorithm is also discussed. the performance of brushlet in preserving the high frequency information at high compress ratio can be revealed when compared to the ezw algorithm in the result
作為對比，本文同時研究了ezw小波系數零樹編碼演算法，從對比中可以看出brushlet在高壓縮比下保留圖象高頻信息的性能。 -
Secondly, on the basis of the research on the characteristics of the wavelet coefficients, the combination of the ezw ( embedded zerotree wavelet ) and advanced rle ( run length encode ) is presented to realize the efficient codes of the wavelet coefficients. finally, the improved periodic extension algorithm is used to solve the boundary problem appeared in wavelet transform. the algorithm is realized by software and the good processing results are obtained
論文選取cdf （ 2 ， 2 ）小波基，取得了較好圖像壓縮效果；二、通過對小波系數的特點的研究，提出了將嵌入式零樹編碼和改進的遊程編碼相結合的方法，實現了小波系數的有效編碼；三、採用改進的周期延拓法解決圖像進行小波分解時出現的邊界問題，並通過軟體實現，取得較好的處理效果。 -
Wth regard to the threshold which used in the algoritlun based on wavelat transform and are determined by experience, we put forward a automatic and adaptive algorithm that can calculate the suitable threshold. this suggested algorithm makes use of the frequency analysis of the psychoacoustic model to make the embedded watermark inaudible. this idea can be used in such sort of watermark embedded algorithins based on wavelet transform
對于使用量化小波系數的加水印的演算法，對于其中要由經驗來確定的量化閾值，本文結合心理聲學模型的頻域分析，提出了一種自適應的求量化閾值的方法，這一方法對于其它使用小波變換加水印的演算法求閾值都有一定的參考價值。 -
Motion compensated prediction error image has significant amplitudes mainly along the boundaries of moving objects, correspondingly its wavelet coefficients contain large energy in high frequency bands. this greatly reduces the coding efficiency of ezw. it is first provided that the correspondence between the significant amplitudes area of the mcp error image and the wavelet coefficient significant map, then encode the significant map efficiently using quadtree approach, followed by bit - plane coding the significant coefficients to produce an embedded data stream. experiment result shows that compared to ezw and zte, the proposed algorithm is more efficient and has better performance
演算法對于運動補償余量誤差幀首先進行小波變換，並選取適當的閾值，用重要圖表示大於該閾值的重要系數。根據殘差幀小波系數的統計特性，用四叉樹方法編碼重要圖，並對重要系數作位面編碼，生成嵌入式碼流。實驗表明，與ezw ， zte等演算法相比較，該演算法編碼效率高，復現圖像質量好。 -
The original image is transformed by wavelet transforming, and the watermark is embedded in the selected detail subband according to neighboring symbols average value
原始載體圖像經小波變換后，根據鄰近特徵平均值將水印嵌入到小波域中所選擇的細節子帶上。 -
An embedded wavelet quadtree interframe coding algorithm an embedded wavelet quadtree interframe coding algorithm
一種嵌入式小波四叉樹幀間編碼演算法 -
Then, we focus on embedded wavelet algorithm, include embedded zerotrees wavelet algorithm, set partitioning in hierarchical trees algorithm and x - tree image coding algorithm
並根據ezw演算法在量化過程中存在的問題，提出了一種改進的零樹量化編碼演算法。 -
Embedded wavelet transform image coding using scalar quantization
標量量化嵌入式小波變換圖像編碼
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