embed watermark 中文意思是什麼

embed watermark 解釋
嵌入數字水印
  • embed : vt. （-dd-） 〈一般用被動式〉1. 栽種。2. 埋置，嵌進；【醫學】植入。3. 深留（記憶中）。n. -ment
  • watermark : n. （壓印在紙里的）水印。2. vt. 印水印（在紙上）。
  1. Moreover, in order to raise the watermark ' s security and keep resilience to cropping attack, we used the magic square shuffling techniques in watermark image before embed the mark

    此外，為了提高水印的安全性和對剪切的抵抗性，在嵌入水印前，還先對水印進行了幻方置亂預處理。
  2. The advent of the internet and the wide availability ofcomputers, scanners and printers make digital data acquisition, exchange and transmission a simple task. however, making digital data accessible to others through networks also creates opportunities for malicious parties to make salable copies of copyrighted content without permission of the content owner. digital watermarking is likely to be a potential solution to this problem. digital watermarking has been proposed as a solution to the problem of copyright protection of multimedia documents in networked environments. it makes possible to embed a watermark ( such as identification data, serials number, text or image etc. ) to multimedia documents allowing copyright protection, secret communication, document authentication and so on. in this paper, we present a new digital image watermarking method based on svd ( singular value decomposition ), and then give some theoretical analysis about the algorithm. extensive experimental results show that this method is much more robust than other methods presented before

    隨著計算機和網路技術的飛速發展，數字圖像、音頻和視頻產品愈來愈需要一種有效的版權保護方法，另外通信系統在網路環境下的信息安全問題也日益顯露出來.數字圖像水印技術為上述問題提供了一個潛在的解決方案.所謂水印技術就是將數字、序列號、文字、圖像標志等版權信息嵌入到多媒體數據中，以起到版權保護、秘密通信、數據文件的真偽鑒別和產品標志等作用.本文提出了一種新的基於奇異值分解的數字水印演算法並且對該方法的理論基礎給出分析.實驗結果表明這種方法要比目前提出的流行演算法魯棒
  3. It takes use of pseudo - random technology, dynamic adaptive technology, multi - channel technology, random position embed technology and so no. so the digital watermarking can resist the physical process of printing and scanning. at the same time, the watermark is binary image which includes a great deal of information, such as personal id, secret information, even a piece of map

    本文特別針對印刷和掃描給數字圖像帶來的誤差的問題，設計了一種新的水印演算法，綜合運用了偽隨機處理技術、動態自適應技術、不同應用選擇不用頻帶處理技術、隨機位置嵌入技術、多通道嵌入等技術，使得本文所設計的水印演算法能夠抵抗印刷和掃描的物理轉換過程，同時本文所設計的水印是二值圖像，能夠承載大量的信息，例如個人id 、機密信息、商標標識，甚至可以是一幅地圖。
  4. This thesis presents a new audio digital watermark algorithm based on has model. the steps : first, it classifies the signals through fft ; second, calculating the tones, noise and the overall masking threshold of different phases through has, and changing the energy value of tones which are more than that of the overall masking threshold to embed the watermark information

    提出了一種基於人類聽覺系統（ has ）模型的音頻數字水印演算法，該演算法首先對信號進行分段離散快速傅立葉變換（ fft ） ，再根據人類聽覺系統模型計算出各段的類純音、類噪音以及各段的總體掩蔽閾值，通過改變大於總體遮蔽閾值的類純音的能量值來嵌入水印信息。
  5. In recent years, the research about the audio digital watermark technology is developed quickly. especially the technology of audio digital watermark in the transform domain, make research have practicability because it can embed information to sensitive area of the carrier

    近幾年來，有關音頻數字水印技術的研究工作發展很快，尤其在變換域音頻信息的數據嵌入技術，由於其能將信息嵌入到載體的敏感區域，使得研究更具有實用性。
  6. So far, there are three problems in most watermark detecting algorithm, non - blind detection, the process of watermark detection needs original audio signal. symmetrical watermark algorithm : that is the process of watermark embed is contrary to the process of watermark detection, the effect and the performance of watermark detection in the same type detecting algorithm are not good and unstable

    目前，很多音頻水印的檢測演算法存在以下幾個問題，非盲水印檢測，檢測過程需要原始音頻信號的參與，對稱水印演算法，即水印的檢測過程與水印的嵌入過程互逆，同類檢測演算法中檢測效果差，檢測性能的不穩定。
  7. One is the colorful watermark medical image electronic signature that based on the discrete wavelets transformation. in this method, using color medical images as the original image, a new watermark hidden algorithm, which uses mixed chaos sequences to preprocessing the electronic signature information, is presented. this algorithm transforms the color space, by changing wavelets ’ low frequency coefficient to embed the watermark in

    其中一種是基於離散小波變換的水印彩色醫學圖像電子簽名方案;在這個演算法中，採用彩色醫學圖像為原始圖像，提出利用混合混沌序列對電子簽名信息進行預處理的新的水印隱藏演算法，對真彩圖像進行色彩空間轉換，通過改變小波低頻系數將水印嵌入到小波的低頻帶。
  8. But, though considerable process has been made in the last ten years, digital watermarking is still in its infancy, and much interesting work remains to be done this thesis addresses some problems in the gray - scale image digital watermarking that are summarized below : 1 ) whereas the basic theory of digital watermarking is still very poor, a digital watermarking mathematic model based on imperceptibility and robustness is presented by analysising the characteristic of digital watermarking ; 2 ) based on the model constructed above, by defining the measures of capacity and robustness of digital watermarking, an objective method for evaluating the digital watermarking is introduced and used to analysis some algorithms ; 3 ) whereas geometric distortion always influences the restoration of watermark, we advocate to enhance the robustness against geometric distortion by restoring the image which has been distorted by geometric transformation, and a method is designed for estimating the parameters of geometric transformation ; 4 ) based on the conclusion discussed above, and combined with the masking effects of hvs, a novel public meaningful gray - scale image digital watermarking is designed by analysising the characteristics of image gray - scale interpolation and haar wavelet transformation. the experimental results show that the method is indeed powerful ; 5 ) whereas many image digital watermarking schemes, which embed watermark by modifying the values of pixels in spatial domain and transformed domain, are confronted with the conflict between the imperceptibility and robustness, we advocated to use some stable digital characteristics of host image as watermark and a algorithm based on hermite matrix is designed

    本文重點對灰度圖象數字水印技術進行研究，主要工作如下： 1 ）鑒于目前數字水印的理論研究比較薄弱的現狀，本文通過分析數字水印的特點，建立了一個數字水印的數學模型，為進一步研究數字水印打下了基礎； 2 ）根據以上建立的模型，通過引入容量和穩健度的概念為數字水印提供了一個客觀評價方法，並對一些數字水印演算法進行了分析； 3 ）為增強數字水印抵抗幾何攻擊的能力，研究了受幾何攻擊的圖象的復原問題，並給出了一個計算圖象幾何變換參數的方法； 4 ）通過分析圖象灰度插值演算法和haar小波變換的特點，結合hvs的掩蔽效應，設計了一個公開的有意義數字水印演算法，實驗結果表明本演算法具有較強的穩健性； 5 ）目前許多水印演算法都是通過在空域或頻域修改象素值的方法嵌入水印的，這種方法面臨著透明性和穩健性的矛盾，為解決這個矛盾，本文提出以圖象的某些穩定的數字特徵為水印的觀點，並結合hermite矩陣的特點設計了相應的水印演算法，實驗結果表明該演算法具有較好的穩健性。
  9. In this paper we adopt pseudo - random sequence or gray level image as the watermark, choose the dwt coefficients as the carrier, then embed the watermark into the carrier imperceptually. one algorithm accomplishes blind extracting. it presents a symmetric algorithm based on shuffling technique

    採用偽隨機序列或灰度圖像作為水印信號，利用dwt變換系數作為水印的載體，在不降低圖像質量的前提下達到嵌入水印的目的，部分方案在恢復水印的過程中無需原始圖像的參與。
  10. 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

    在頻率域嵌入水印信息，是目前一種主流的嵌入演算法，在很多文獻中，都是通過量化音頻信號的ftf系數， dct系數，或者是dwt域的高頻系數。我們認為:在小波域內的近似分量（低頻系數）中嵌入水印能夠提高數字水印的魯棒性，通過量化嵌入水印的方法，將水印嵌入到近似分量中每個分段中最大值上，因為這樣對于同一個量化步長，量化對象的幅值越大，所疊加的「噪聲」就越小，從而提高了數字水印的不可感知性。
  11. Firstly, by analyzing former researches and visible watermark characteristics, a visible watermarking algorithm with feature of holding image content is realized. secondly, using redundant embedding technique to embed watermark and extracting watermark according to watermark content, a meaningful invisible watermarking scheme is proposed ; thirdly, combining with vision characteristics a resilient - prone scrambling algorithm and a restoring scheme of scrambled image with data loss are proposed, image scrambling technique of irregular region is discussed. based on the proposed algorithms, a digital watermarking system scheme is designed

    通過分析前人的研究進展，結合可見水印特性，在小波域實現了一種具有圖像內容保持特性的可見水印演算法;利用水印冗餘嵌入技術進行水印嵌入，根據水印遭破壞的情況進行水印提取，給出一種有意義水印的嵌入和提取方案;結合視覺冗餘特性提出並實現了一種易於恢復的圖像置亂演算法和一種受損置亂圖像的恢復方案;探討了不規則區域的圖像置亂方法，在此基礎上，設計了一種置亂演算法在數字水印演算法中的應用框架;最後整合本文所提出的演算法，實現了一個基於視覺特性的圖像水印系統。
  12. Based on characteristics of human visual system ( hvs ), including texture / contract masking property and sensitivity of frequency, and combining with wavelet multi - resolution theory, a novel just noticeable difference ( jnd ) model that can embed watermark adaptively is proposed

    用該模型可使指紋特徵信息生成的數字水印自適應嵌入合成的指紋圖像中，提高了指紋認證系統的可信度。
  13. Circular symmetric spread spectrum digital image watermarking using chaotic sequences as the watermark takes advantage of the discrete fourier transform properties and spread - spectrum communication techniques to embed a circular symmetric watermark in the frequency domain. the watermark can be detected without the presence of the original image even when the watermarked image suffers geometrical attacks such as translation, rotation and scaling. experimental results show that the proposed scheme has good transparency and highly good robustness to geometric transformations

    基於混沌序列的圓對稱擴頻水印方案是以實值混沌序列作為水印，根據離散傅立葉變換的特性並結合通信上的擴頻技術，將一圓對稱水印嵌入到了圖像的頻域中，且即使圖像遭受了平移、旋轉、縮放等幾何攻擊檢測水印也不需要原圖像。
  14. Utilizing the characteristics of the human visual system, we embed a digital signal into the average value of the four adjacent wavelet coefficients since the average value has better stability than single wavelet coefficient. this method need n ' t original image when the watermark is extracting. experiment results show the effectiveness of this method which is robust to common image process and fragile to malicious attack, i. e. this method can detect the tampered portions

    因此，本文利用小波系數均值來嵌入水印，提出了一種基於小波域的圖像完整性驗證的半脆弱水印演算法，在魯棒性和脆弱性方面達到了很好的平衡，對非惡意攻擊有很強的魯棒性，而對于惡意的篡改操作有很強的識別和定位能力。
  15. The algorithm takes advantage of the merits of the watermarks both in low frequency and high frequency and can embed more information with less distortion. experimental results show the algorithm is robust to many common image operations. as for the vector map data, an uniform model of embeding watermark for vector maps and raster maps is proposed after current trend of research and watermarking methods of 3 - d vector images are summarized, primary study results show the model is effective and promising to further research

    目前該問題在國內外都還處于探索階段，作者在分析了國內外三維矢量水印的研究狀況、研究方法后，提出了將矢量數據中的部分信息轉化為柵格形式后再嵌入水印的方法，該方法使地圖柵格數據和矢量數據在嵌入水印時能夠使用統一模型，初步的實驗結果表明該方法為二維地圖矢量數據的水印嵌入開辟了一種新途徑。
  16. We embed copyright watermark utilizing variance modulation on dc coefficients of dct transform ; and in the spatial domain, we embed authentication watermark gemerated from one - way hash function, lossless compression and least - significant - bit embedding

    在頻域中，我們採用了方差調製法，對版權水印進行嵌入;在空域中，我們採用了單向散列函數、無損壓縮和最低有效位等方法，對認證水印進行嵌入。
  17. In chapter 5, we discuss where to embed the watermark based on the mpeg ' s encoding algorithm, the differences between mpeg system and static image are considered, we also discuss how to mesure the qulity of a kind of watermarking method

    在第五章中，首先根據mpeg文件格式及其編解碼演算法的特點提出了在視頻中嵌入水印的位置，比較了它和靜態水印技術的異同點。給出了一種衡量mpeg視頻水印技術的方法。
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