fractal compression 中文意思是什麼

fractal compression 解釋
部分壓縮，局部壓縮，分形壓縮,拼圖壓縮
  • fractal : 分數維幾何
  • 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. Contrapose the shortcoming of the thecnology of the image compression, we present a new method based on the theory of the fractal, and do some experiment

    在此基礎上針對現有圖像壓縮技術中存在的一些不足，提出了一種新的基於分形理論的圖像壓縮演算法並進行了實驗。
  2. Fractal coding has been proved useful for image compression. it is also proved effective for content - based image retrieval. in the paper, we present a block - constrained fractal coding scheme and a matching strategy for content - based image retrieval. in this coding scheme, an image is partitioned into non - overlap blocks of a size close to that of a query iconic image. fractal codes are generated for each block independently. in the similarity measure of fractal codes, an improved nona - tree decomposition scheme is adopted to avoid matching the fractal codes globally in order to reduce computational complexity. our experimental results show that our coding scheme and the matching strategy we adopted is useful for image retrieval, and is compared favorably with other two methods tested in terms of storage usage and computing time

    分形編碼在圖像壓縮方面取得了很好的效果，同時，分形編碼也能夠用於基於內容的圖像檢索.本文提出了一種基於塊限制的分形編碼演算法和匹配策略，並將它們用於圖像檢索.在我們編碼演算法中，圖像會被預先分成互相不重疊的子圖像塊，然後對這些子圖像進行獨立地分形編碼，從而獲得整幅圖像的分形碼.該編碼演算法能夠在很大程度上減少編碼時間.在進行圖像間相似性的匹配時，我們採用改進的基於九叉樹的分配策略，從而避免全局地進行分形碼的匹配，減少了計算量.實驗結果說明，我們的編碼演算法和匹配策略能夠比較有效地應用於基於內容的圖像檢索，在計算時間和存儲時間上都優于實驗中其它兩種方法
  3. A fractal image compression method with dct approximation

    近似的分形圖像壓縮方法
  4. Fractal image compression coding is focused attention upon by researchers for it ' s good quality of high compression ration, resolution irrelevancy and fast decoding. but it ca n ' t be put into practice for the matching search of domain and range is too difficult and the coding time is too long

    分形圖像壓縮編碼以其高壓縮比、解析度無關性、快速解碼等優越特性而引起世人矚目，但卻常因為龐大的定義域計算和煩瑣的定義域值域匹配搜索而使編碼時間過長，從而影響了其實用性。
  5. Researchers have developed many methods for image compression, and fractal image compression, as a new scheme of image compression, has received a great deal of attention and study from researchers all over the world in the field of image compression because of its desirable properties such as fast decoding, resolution independence of decoded image and high compression ratio

    目前人們已經提出了很多壓縮方法，而分形圖像壓縮作為一種新的壓縮方法，因其具有壓縮比高、解碼速度快、解碼圖像與解析度無關等優點，十余年來引起了眾多學者的關注和研究。
  6. A fast fractal image compression algorithm based on k - mean clustering optimization

    均值聚類優化的快速分形圖像壓縮演算法
  7. The second chapter sets forth the theorem basis of fractal image compression. by researching the property of iterate function system in metric space, two basic theorems are brought outthe fixed - point theorem of contract mapping and collage theorem. in the third chapter, fractal image compression method based on block partition is discussed and implemented

    接著在第二章中闡述了分形圖象壓縮的理論基礎，通過對完備空間中迭代函數系統性質的研究，提出了分形圖象壓縮的兩個基本定理：壓縮映射的不動點定理和拼貼定理。
  8. Image code is a developing field on image compression and a lot of methods on that has now generated, such as predict code, transform code, statistic code, subband code, fractal code, model code, vector quantization code, neural networks code, wavelet transform code, etc. in this paper, we set focus on the wavelet transform code

    常見的主要編碼方法有預測編碼，變換編碼，統計編碼，子帶編碼，分形編碼、模型編碼、矢量量化編碼，神經網路編碼，小波變換編碼等等。本文主要研究基於小波變換的圖像編碼方法。
  9. With the mass application of the image in the contemporary world, the research of the image compression technology becomes more and more impera - tive. the fractal image compression technology was proposed by american math - ematican barnsley and sloan [ 10 ] in 1987

    分形圖象壓縮編碼技術是由美國數學家barnsley和sloan於1987年提出的，此後jacquin首先實現了完全自動的分形壓縮編碼，給分形圖象壓縮領域帶來突破性的進展。
  10. A color image fractal compression coding method

    一種分形彩色圖像壓縮編碼方法
  11. This method has many advantages compared to the latter and is testified by many images. ( 2 ) because fractal coding has the characteristic of high compression ratio, this thesis designed a spatial self - embedding watermarking technique. after self - embedding, it can detect any changes to a watermarked image as well as localizing the areas that have been tampered

    （ 2 ）鑒于分形圖像壓縮具有很高的壓縮比且重構圖像效果好的優點，本文利用分形壓縮實現了一種空域自嵌入水印演算法，不但能對篡改區域進行有效定位，而且具有修復功能。
  12. By analyzing the correlations of r, g, b components of a color image a new color image compression coding method based on fractal theory was proposed. compression ratio was increased and coding speed was fairly high

    根據三色分量的相關性，本文提出基於三色分量配塊的分形彩色圖像壓縮方法，在壓縮比和編碼速度上都有較大的提高。
  13. A fast algorithm of image fractal coding compression based on wavelet subbands

    一種快速小波子帶分形圖像壓縮編碼方法
  14. During the procedure of the still digital image compression, first, we make a jpeg algorithm to the input general still digital image ; then, we make a fractal image compression based on wavelet coefficient cubtrees to the jpeg image

    在靜態數字圖像的壓縮和編碼過程中，首先將輸入的靜態數字圖像做jpeg壓縮；接著，採用基於小波系數子樹的分形圖像壓縮編碼方法對jpeg圖像進行二次壓縮。
  15. A method of coding based on discrete wavelet fractal for image compression

    基於離散小波分形的圖像壓縮編碼
  16. To many not strictiy self - similar image, the usual fractal image compression method based on block partition divides the image into non - overlap regular shape block collection. every block ' s iterate function system is found out by local self - similarity. the parameters of all iterate function system form fractal image compression code

    這種方法將圖象劃分為規則形狀的不重疊的子塊集，根據子塊的局部自相似性，找出集中每一個子塊的迭代函數系統，由全體子塊的迭代函數系統參數形成分形圖象壓縮編碼。
  17. Theoretically, this quadrature can classify image blocks effectively, which bring out big speed - up ratio in fractal encoding ; and this feature is a continuous value, which enables us to adjust the quality of decoded images by changing the number of classes. our experimental results show that, comparing with exhaustive search, when the class number is 25, we obtain 20 times speed - up ratio, with only image degeneration of 2. 08db, at the same compression ratio

    _ }速比;這種不變量也是連續量，大量的數值實驗表明，因此還可通過改變分類數目來調竹解碼圖像的質量在壓縮比相同的前提下，與全局搜索法相比，塊分為25類時，可取得約20倍的加速比，而解碼質量只相差2
  18. The watermarking technology based on fractal compression

    基於分形圖象編碼的數字水印技術的研究
  19. Its purpose enhances the fractal compression encoding efficiency and has high quality rebuilding image

    提高了經典分形編碼的壓縮效率，並且保證獲得高質量的重建圖像。
  20. Furthermore, good compression effectivity is presented in application to compression of pd gray intensity images. according to the research on difference degree between computational values of fractal features extracted from decoded pd images and that from original images, it is shown elementarily that the proposed method is effective for application in pd pattern auto - recognition system. ( 4 ) this paper brings forward pd pattern auto - recognition project based on the above recognition features and fractal compression of pd gray intensity images and designs the classifier with back - propagation neural network ( bpnn )

    （ 3 ）研究了局部放電灰度圖像的四叉樹分形圖像壓縮方法，通過模擬實驗證明採用本文演算法能夠獲得一定的圖像壓縮比，在局部放電灰度圖像壓縮應用中顯示了良好的壓縮效果，進一步研究了局部放電解碼圖像的識別結果與原始圖像之結果的差異程度，研究結果初步表明該方法應用於局部放電模式自動識別系統中是有效的； （ 4 ）研究了基於局部放電解碼圖像的bpnn識別方法及，通過分析對解碼圖像的識別效果，驗證了設計的系統模式識別方案的有效性，同時表明該方案能夠滿足實地局部放電模式自動識別和遠程數據通訊及自動識別的需要。
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