discrete cosine transform 中文意思是什麼

discrete cosine transform 解釋
離散餘弦變換
  • discrete : adj. 1. 分離的，分立的；顯然有別的。2. 不連續的；【數學】離散的；【哲學】抽象的 （opp. concrete）。adv. -ly
  • cosine : n. 【數學】餘弦。
  • transform : vt （使）變形；（使）變化[轉化，轉變]；變態，改變（性質、機能等），改造，改革；【數學】變換；【電...
  1. Speech enhancement based on discrete cosine transform

    基於離散餘弦變換的語音增強
  2. Iocs inverse discrete cosine transform

    離散餘弦逆變換
  3. A method of face detection based on support vector machine ( svm ) is put forward. the features are extracted by applying the discrete cosine transform ( dct ) to the preprocessing image. the dct coefficients are inputted to the svm and the svm are trained using the cropped face samples and the " bootstrapping non - face " samples

    對預處理后的圖像進行離散餘弦變換提取特徵，取dct系數作為支持向量機的輸入，將經過裁剪的「人臉」樣本與「自舉」方法得到的「非人臉」樣本一起用來訓練支持向量機。
  4. The software realizes the discrete cosine transform, huffman coding, rle coding and so on. in addition, the prediction, motion estimation and motion compensation are adopted

    實現了dct （ discretecosinetransform ）變換、 huffman編碼及rle編碼等，另外還運用了預測編碼、運動估計及運動補償等技術。
  5. Then, based on the theory of discrete fourier transform, discrete cosine transform and discrete wavelet transform, two invisible image watermarking schemes in transform domain are proposed, one is circular symmetric spread spectrum digital image watermarking based on chaotic sequences, the other is the hybrid image watermarking based on wavelet decomposition and discrete cosine transform. finally, the good performance of the two algorithms is verified by some common image processing and attack experiments

    在分析了dft 、 dct 、 dwt的理論與演算法的基礎上，提出了兩種基於變換域的圖像隱形水印方案? ?基於混沌序列的圓對稱擴頻水印方案和基於小波分解和餘弦變換結合的水印方案，並通過一些常見的圖像處理及攻擊實驗驗證了這兩種演算法生成水印的性能。
  6. Idct inverse discrete cosine transform

    離散餘弦逆變換
  7. The discrete cosine transform can be implemented in a computationally efficient manner with stage i, the input signal is transformed into a corresponding signal constituted uncorrelated variables

    第一級滑動離散餘弦變換能夠以高計算效率實現，將輸入信號變換為一個由互不相關變量組成的對應信號。
  8. In the decoder, an end - of - block ( eob ) position of an incoming block received by the decoder is determined and a discrete cosine transform ( dct ) block type is determined based on the determined eob position

    在該解碼器部分，將收到的輸入區塊中決定一區塊終止的位置，並根據此區塊終止位置決定一種離散餘弦轉換區塊形式。
  9. As the military and industry is developing dramatically, to enhance the low - contrast digital image has become one of the important areas in image processing. there are two traditional methods to enhance the low - contrast digital image : the methods based on frequency and the method based on time. the histogram enhancement, the most popular way to enhance, is representing the latter one ; while the methods based on frequency often uses wavelet transform, ft ( flourier transform ), dct ( discrete cosine transform ) to enhance

    隨著軍事和工業上的發展需要，低對比度數字圖像的增強越來越成為數字圖像處理中的一個重要領域，傳統的增強方法分為頻域法和空域法兩大類，其中空域法的代表為直方圖增強法，這也是最為流行的增強方法，頻域法中用的較多的是基於小波變換，傅立葉變換和離散餘弦變換的增強方法，本文介紹的是基於小波神經網路的頻域增強法。
  10. Most of these standards are based on the method of inter - frame motion compensation and two - dimensional discrete cosine transform ( 2d - dct ) and encode and describe the color video in ycbcr 4 : 2 : 0 format, which want to take advantage of human visual system ( hvs ) to save bit expense by decreasing the resolution of two color difference components

    當前國際上的壓縮標準普遍採用幀間運動補償加幀內二維離散餘弦變換的編碼方法，並且將彩色視頻序列表示為ycbcr格式，試圖利用人眼的視覺特性降低對色差信號的解析度來節省比特開銷。
  11. Then some key techniques in mpeg - 2 and mpeg - 4 recommendations are studied and compared in detail, including motion estimation, motion compensation, discrete cosine transform, inverse discrete cosine transform, variable length coding and layered description of picture and code stream

    然後深入研究了mpeg - 2建議的視頻編碼標準，包括ts流、 ps流、時鐘恢復、視頻與音頻的同步、基於場的運動補償、 dct及變長編碼。
  12. Discrete cosine transform ( dct ) is one of common transform encoding technique in common use of image compression. because such advantages as relatively matured theory, arithmetic and hardware ; ease to move relativity ; fit human vision system ; less calculation ( not include plural calculation ) : ease to realize and so on, dct compression is widely used

    離散餘弦變換（ dct ）是圖像壓縮中經常用到的正交變換編碼技術，由於理論、演算法和硬體相對成熟，去相關性好，適應人眼的視覺特性，計算量不大（沒有復數計算） ，易於實現等優點， dct壓縮編碼的應用非常廣泛。
  13. In this paper, we introduced two watermarking channel models and analyzed discrete cosine transform domain ( dct domain ) watermarking channel model for copyright protection of still digital images

    在本文中，我們介紹了兩種水印通道模型，同時分析了一種用於靜態圖象版權保護的oct變換域的數字水印通道模型。
  14. Currently, transforming coding is one of the most used approach for image coding, where the discrete cosine transform ( dct ), the discrete wavelet transform ( dwt ), and the lapped biorthogonal transform ( lbt ) are widely utilized. how to reduce the complexity of these discrete transforms, is the key technique to image compression. in this thesis, a type of lapped biorthogonal transform which can map integers to integers is considered

    變換編碼是圖像壓縮中的主流方法，其採用的主要變換有離散餘弦變換、離散小波變換、雙正交疊式變換，如何減少這些離散變換的計算復雜性，一直是圖像壓縮研究的重要課題。
  15. Mdct for modified discrete cosine transform

    改進的離散餘弦變換
  16. Fddi fdm forward discrete cosine transform

    離散餘弦正變換
  17. Fdp forward discrete cosine transform

    離散餘弦正變換
  18. Inverse discrete cosine transform

    逆離散余炫
  19. The system is composed with six sections which are entropy decoder, inverse z transform, inverse quantization, inverse discrete cosine transform ( idct ), up sampling and color space transform

    Jpeg解碼演算法主要由熵解碼、逆z變換、反量化、反離散餘弦變換、內插和色度空間轉換六部分組成。
  20. By applying generalized gaussian distribution to statistically model the alternating current coefficient of discrete cosine transform, the technology of the blind image watermark is studied and the performance of the new detector is analyzed

    摘要根據數字圖像離散餘弦變換域交流系數的廣義高斯分佈模型，對盲圖像水印技術進行研究，並給出了水印檢測器檢測性能的理論分析結果。
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