lossy compression 中文意思是什麼

lossy compression 解釋
損耗式壓縮
  • lossy : 大損耗；大衰減
  • compression : n. 1. 壓縮；壓緊；濃縮，緊縮。2. 加壓；壓抑。3. （表現的）簡練。4. 應壓試驗。
  1. It can perform both lossy and lossless compression, and progressive codec, by providing high compression rate and image reconstruction quality

    在研究嵌入式零樹小波編碼演算法及原理的基礎上，描述了演算法的應用過程，闡述了具體的實現思路。
  2. The simulation results show that it has high hiding capacity, good imperceptibility and certain robustness to jpeg lossy compression

    模擬結果表明，該方法提高了信息嵌入量，具有較好的信息隱藏效果，同時對jpeg壓縮具有一定的抵抗能力。
  3. The experimental results and attack analysis show that the watermark algorithm is transparent and robust against some image processing operations, such as jpeg lossy compression, median filtering, additive noise, scaling, and incorporating attacks

    實驗結論和攻擊測試表明，本文所提議的演算法具有較好的透明性，對如jpeg有損壓縮、中值濾波、附加噪聲、伸縮、裁剪等各種圖像處理的攻擊有較強的頑健性。
  4. How do i handle lossless and lossy compression

    怎麼處理無損壓縮和有損壓縮？
  5. Vector quantization ( vq ) is a popular lossy compression scheme widely used in multimedia data compressions

    矢量量化是一種常用有損壓縮技術，被廣泛地應用於多媒體數據壓縮。
  6. Experimental results show that the proposed technique is robust enough to some image processing operations and jpeg lossy compression

    實驗結果表明，該演算法對常見的圖像處理和jpeg有損壓縮有較好的魯棒性。
  7. Finally, lossless compression by means of integer lifting scheme is realized. after selecting a practical bases of lifting scheme transform, we put forward to two lossy compression algorithms based on adaptive transform and demonstrate its feasibility and validity by simulation and experiment

    實現了將整數提升框架應用於無損壓縮；選擇了一個實際可行的提升變換基庫，給出了兩種基於自適應變換的有損圖像壓縮演算法，實驗模擬結果證明了演算法的可行性及有效性。
  8. In the paper, chapter 1 gives a comprehensive introduction of digital image compressing including its recent status, technical standards, classification in the world. chapter 2 introduces briefly the thought and ii procedure of vector quantization, describes lgb algorithm and vector quantization based on sofm neural network. chapter 3 discusses predictable coding in lossy and lossless aspects, analyzes adaptive predictable coding based on bp neural network, introduces the evaluation of algorithm on neural network in image compression. chapter 4 discusses the applications of mathematical transformation in image compression and does experiments related, analyzes the strategies of image coding in transformed domain. in chapter 5 images are decomposed and represented by wavelet transform, then discusses the characteristics and effects of wavelet functions in image compression, analyzes the wavelet coefficients after images are decomposed ; based on the theories and analyses in the prior chapters, the paper presents an image compression scheme and gives results. the test results shows that the image compression scheme is practical and helpful to map into the local content of images to get rid off redundancy, so that, it can require satisfactory results of image compression

    方案首先利用小波多分辨分析性質，對圖像進行小波分解，對分解后各子圖的小波系數進行了統計分析，針對各子圖的小波系數特點，對不同的子圖分別採用不同的壓縮方法，低頻子圖採用基於神經網路的自適應預測編碼，高頻子圖採用基於神經網路的矢量量化編碼，從而實現對圖像數據的壓縮處理。本論文第一章介紹了數字圖像壓縮處理的國內外當前的概況以及其技術標準和分類。在第二章，介紹了數字圖像的矢量量化技術的數學思想和過程，對lbg演算法和基於sofm神經網路的矢量量化進行了闡述、分析。
  9. The results of compuler simulation show that the proposed watermarking methods satisfy the requirements of robustness and transparency. this scheme can resist the conunon image processing operations, such as lossy compression, cropping, filtering and scaling

    本文所設汁的兩個數字水印手鉤中的水口具有電好的不可m付能抵抗有損壓縮、剪切、平滑和放縮等常見的圖像操作，具有良好的魯棒性。
  10. Experimental results show that the proposed techniques have good imperceptibility and can survive of common image processing operations and jpeg lossy compression with high robustness. the second one considered the watermarking system as a special digital communication system and introduced the ecc as channel coding technique. by using the turbo coding technique, we are able to reduce the watermark bit error rate and improve the robustness of the watermark so as to make counterfeiting attacks more difficult

    本文在保證水印不可見性的基礎上和載體圖像的允許降質范圍內，利用rbf神經網路技術實現數字水印信息的最大強度嵌入以增強數字水印抵禦各種惡意攻擊的穩健性;在通信論和信息論模型基礎上，引入ecc （差錯控制編碼）技術降低水印的誤碼率，使得提取水印信息更加可靠，使可能的水印攻擊變得更加困難，從而獲得更好的水印穩健性和可靠性。
  11. Two kinds of filter are recommended in the jpeg2000 standard. one is the 5 / 3 filter which is used in the lossless image compression, the other is the 9 / 7 filter which is used in the lossy image compression

    Jpeg2000標準推薦採用的濾波器有兩種，一種是5 / 3濾波器，它適用於無損壓縮的情況，另一種是9 / 7濾波器，它適用於有損壓縮的情況。
  12. 3. lossy and lossless image compression is realized by means of integer wavelet transform, and the shortcoming of pure lossy compression with non integer ones is overcame. here the influence of different wavelet base to the effect of compression is discussed, and conclusions are obtained as follows : to the choice of wavelet base in spiht image codec, in lossless codec, integer lg5 / 3 and in lossy codec, non integer db9 / 7 wavelet base is recommended

    3 、將整數小波變換應用於圖像編碼之中，克服了非整數小波變換只能有損壓縮的缺點，實現了圖像從有損到無損的壓縮，並分析了不同小波基對壓縮性能的影響，最後得到如下結論：在spiht壓縮編碼中，有損壓縮推薦使用非整數db9 7小波變換，無損壓縮推薦使用整數lg5 3小波。
  13. One of the emerging technologies for lossy image compression is vector quantization ( vq )

    矢量量化技術由於其極高的壓縮效率，正日漸受到研究人員的重視。
  14. Chien - chang chen and cheng - shian lin, " toward a robust image authentication method surviving jpeg lossy compression ", proceedings of the 17th chinese image processing and pattern recognition workshop, hua - lien, taiwan, august, 2004

    陳建彰，林承賢， "應用基因演演算法于可抵抗jpeg壓縮之影像認證最佳化" ，電子商務與數位生活研討會， 2005年3月
  15. In addition, robustness of the scheme against jpeg lossy compression, image enhancement, noise addition and statistical averaging attacks among others are provided

    此外，文中還分析了演算法對jpeg壓縮、圖像增強、加入噪聲及共謀攻擊等操作的魯棒性。
  16. Because the remote sensing information is precious and we expect high exactitude of resumed information, so we give more concern on lossless or nearly lossy compression

    由於遙感信息非常寶貴，要求對信息恢復的準確程度較高，因而對于無損或近無損壓縮給予更高的關注。
  17. The result of simulation implied that this calculation can keep not only the better audio quality, but also has the better robustness for the attacks such as : noise addition, lossy compression, low pass filtering and re - quantization

    模擬實驗結果表明本演算法不僅能保持較好的音質，而且對諸如疊加噪聲，有損壓縮，低通濾波，重新采樣等攻擊都具有較好的魯棒性。
  18. Lossless and lossy compression, embedded lossy to lossless coding, progressive transmission by pixel accuracy and by resolution, robustness to the presence of bit - errors and region - of - interest coding, are some representative features

    作為熵編碼， jpeg2000採用了基於上下文的自適應二進制算術編碼技術，通過以編碼塊（ codeblock ）為編碼單位等技術獲得了較高的容錯性。
  19. Wavelets are becoming a key technique in the ongoing source compression standard jpeg - 2000. the positive arguments for advocating dwt in image watermarking are : preventing watermark removal by jpeg - 2000 lossy compression, reusing previous studies on source coding regarding the visibility of image degradations, and offering the possibility of embedding in the compressed domain

    在小波域嵌入水印的原因是：可以防止由於jpeg - 2000有損壓縮而造成的水印消除；可以利用信源編碼領域對圖像失真的可見性研究成果控制水印的嵌入位置和強度；可以實現在壓縮域直接嵌入水印。
  20. The essay, first of all, researchs jpeg2000 and implements the kernel code of compressing dicom with jpeg2000. on the basis of it, gives an improvement, and then combines image denoising and image compression to get better lossy compression effect ; discusses several lossless compression ways of medical image sequence ; in the end, discusses or analyses many problems of compressing with jpeg2000, and tests all the methods said in the paper

    並在此基礎上給出了一種對jpeg2000的改進演算法;接著將圖像的小波降噪方法與jpeg2000相結合，以得到更好的有損壓縮效果，同時給出了一種提高壓縮比的方法;再接著討論了幾種提高醫學序列圖像無損壓縮的方法;最後討論和分析了jpeg2000在壓縮dicom時所涉及的問題;並對所提出和討論的方法進行了相關的試驗。
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