The method includes steps: digital watermark technique is adopted to hide information of key data in not key data codes of compressed image; under protection of digital watermark, using protective backup for key data detects whether normal transmitted key data is correct or not so as to detect error code; carrying out cyclic mutual backup by using macro blocks in same positions in front and back macro block set; embedding coded motion vector in form of digital watermark to DCT transformation coefficient, and ensuring that video data are not influenced as best as one can; when error code occurs, if key data backup is correct, then the backup replaces former key data; otherwise, using mean value of key data in adjacent macro blocks within same frame to replace former key data approximately.

本發(fā)明中，采用數(shù)字水印技術(shù)在壓縮圖像的非關(guān)鍵數(shù)據(jù)編碼中隱藏關(guān)鍵數(shù)據(jù)信息国产麻豆区精品系列在线；通過數(shù)字水印保護下的關(guān)鍵數(shù)據(jù)保護備份來檢測正常傳輸?shù)年P(guān)鍵數(shù)據(jù)是否正確三级视频网站欧美日韩，由此來檢測傳輸誤碼国产一级A片免费观看网；用前后宏塊組中相同位置的宏塊進行循環(huán)相互備份国产a片久久精品；對運動向量進行編碼亚洲一级毛片无码电影，然后以數(shù)字水印的形式嵌入到相對不重要的DCT變換系數(shù)中，同時保證視頻數(shù)據(jù)盡量不受影響浓毛妓女中国HD；在誤碼發(fā)生時国产成人精品一区二区不卡，如果關(guān)鍵數(shù)據(jù)備份正確，則直接替代原關(guān)鍵數(shù)據(jù)欧美日韩国产黄，否則用同一幀內(nèi)相鄰宏塊的關(guān)鍵數(shù)據(jù)的平均值近似替代原關(guān)鍵數(shù)據(jù)影音先锋最新网址。

Since only a subset of counter watermark detection techniques is selected from a larger pool of techniques, a bootlegger will be unaware of the total number of transformations available to the watermark detectors and will therefore not know if the watermark has been successfully removed or corrupted.

由于僅從技術(shù)的較大集合中選擇反水印檢測技術(shù)的子集超碰操乱伦，因此非法販賣者將不知道水印檢測器可用的變換的總數(shù)亚洲乱伦视频网站，從而將不知道水印是否已被成功除去或破壞。

According to the basic principles of information theory, computer graph processing and the chromatics, this thesis mainly researches on the theory and applications of the color images watermark using the characteristics of the human visual system. And then it discusses the preprocessing method such as Image color inversing and image disordering, especially the method of watermark embedding, watermark extracting and watermark attacking etc. At last, an experimental system about watermark embedding and extracting are accomplished.

本文首先根據(jù)信息論、計算機圖形處理和色彩學(xué)中的基本原理老熟女毛多一区二区，結(jié)合人眼的視覺系統(tǒng)特性国产一级视频69欧美一级，對彩色圖像水印的理論與應(yīng)用進行了研究，然后討論了如何對水印圖像進行反色和置亂預(yù)處理国产毛多水多女人A片，尤其是對水印嵌入過程久久丝袜美腿国产精品、水印提取過程和水印攻擊方法等進行了深入探討，并最終設(shè)計實現(xiàn)了一套完整的具有水印嵌入與提取功能的實驗軟件8x8cmo永久免费视频。

Firstly, chaotic kinetic characteristic of Kent mapping is analyzed, using it to encrypt watermark image; Secondly, an algorithm of only modifying the decimal part of DC components is given, bringing the least error, effectively solving the problem which embedding watermark in DC components is easy to the image's block effect; Watermark is extracted without original image utilizing two-bits algorithm.

深入分析了帳篷映射的混沌動力學(xué)特性欧美天天摸天天添人人喊，并將其應(yīng)用于水印圖像的預(yù)處理；在分析了 DCT域嵌入對策的基礎(chǔ)上提出了一種只修改 DC 分量小數(shù)部分的嵌入算法久久久久精品无码，引入的誤差小日韩黄片毛片，有效的解決了以往人們在 DC 分量嵌入水印容易引起圖像塊效應(yīng)的問題；檢測過程中利用二值離散算法使得水印提取時無需原始圖像黄色网站.www。

Watermark Information Services provides search services to establish the state of the art, novelty and risk of infringement in relation to patent and design rights, registrability and infringement risks in relation to trade marks as well as surveillance information on competitor's IP property.

Watermark信息服務(wù)提供搜索服務(wù)來建立與專利和外觀設(shè)計相關(guān)的現(xiàn)狀亚洲三级片网址、革新以及侵權(quán)的危險、與商標相關(guān)的侵權(quán)風險以及競爭者知識產(chǎn)權(quán)的監(jiān)督信息久久精品视频色。

The main task of this paper is a digital watermark image signal, the process is the first image signal by adding a watermark information, the next to detect digital watermark information extraction, the final image of the embedded watermark different attacks, the test of robust watermark sexual.

本次論文任務(wù)主要是對圖像信號實現(xiàn)數(shù)字水印日本XXWWXXWW视频免费，過程首先是對圖像信號加入水印信息，接下來對數(shù)字水印信息進行檢測抽取欧美成A人片在线观看完整版，最后對嵌入水印的圖象進行不同的攻擊国产精品综合日本欧美，測試水印的魯棒性。

The selected image salient features are used to compute geometric transformation parameter of watermarked images. After recovering the size and aspect of watermarked images, the watermark detector is synchronized with embedded watermark. Thus the watermark detector can detect the watermark.

利用提取的圖像固有特征點估計水印化圖像幾何變換參數(shù)欧美精品亚洲精品日韩，恢復(fù)經(jīng)幾何變換的水印化圖像国内偷拍专区，同步水印檢測器與圖像中嵌入的水印信號，使水印檢測有效檢測嵌入的水印信號欧美天天堂在线a一欧。

Following is an explanation of the product groups and how WaterMark and WELS apply and interact.

下面是關(guān)于不同產(chǎn)品如何應(yīng)用Watermark和WELS在线观看国产理论播放网站免费视频，以及兩者關(guān)系的解釋

To increase the security of the watermark, a new binary image encryption algorithm based on TD-ERCS map is presented. The watermark is encrypted by a chaos sequence generated by TD-ERCS map; A novel color image watermarking algorithm is proposed based on discrete chaotic map and 2-dimensions discrete wavelet transform. The watermark is encrypted by the new binary image encryption algorithm, and the encrypted watermark is embed into four sub-bands of the most deep level of blue branch of host image by three-level wavelet transform, and the embedded positions are determined by general cat cha otic map; A novel color-image blind detection watermarking algorithm is proposed based on integer wavelet transform and subsampling. The scrambled watermark is encrypted and embed into the low sub-bands after four sub-images of the Y branch of host image is transformed by two-level wavelet transform, and the embedded positions are determined by Logistic chaotic map, this watermarking scheme can realize blind extraction.

為了提高水印圖像的安全性，提出了一種基于TD-ERCS混沌映射的二值水印圖像的加密算法aa片黄色视频，該算法利用TD-ERCS映射產(chǎn)生的混沌序列加密水印圖像亚洲特级黄a；將離散混沌映射和二維離散小波變換相結(jié)合，研究了彩色圖像水印新算法久久久久精品高级产三级，該算法先對混沌序列加密后的水印圖像進行小波變換无码精品A∨在线观看中文免费，再嵌入到宿主圖像的藍色分量的最深層的四個子帶中，嵌入位置則由廣義貓映射確定久久精品视频这里；將整數(shù)小波變換和圖像子采樣技術(shù)應(yīng)用于數(shù)字水印成年人小视频在线观看免费，提出了一種彩色圖像盲提取水印算法，水印嵌入時国产精品免费黄网，先對宿主圖像在YIQ色彩空間中的Y分量進行子采樣黄片又污又色又爽，并對得到的四個子圖像分別進行二級離散小波變換久久黄色免费网站，然后將置亂并加密后的水印圖像嵌入到小波變換后的低頻子帶中，其嵌入位置由Logistic混沌映射產(chǎn)生的混沌序列確定久久久久国内精品久久久久，實現(xiàn)了水印的盲提取看国产日比一级黄片。

The method first embeds watermark into the geometric invariant Fourier-Mellin domain of an image to weaken the geometric distortion, brought by printing process, of the watermark in presswork, and the image is then used to create presswork via a legal printing process. Secondly, the method rectifies rescanned image from the presswork by using Radon transformation and the embedded watermark in it is detected. Since there is an obvious difference between the destruction degrees of the watermark caused respectively by legal and pirated printing process, we can judge whether a copy of presswork is valid or not just by computing the ratio of the successfully derived watermark and comparing it with a predefined threshold.

該方法先將水印嵌入到具有幾何不變性的Fourier-Mellin域中，以削弱正版印刷過程中的幾何失真對水印的破壞超peng免费视频在线观看；再利用Radon變換對由掃描印刷品所獲得的圖像進行矯正一级欧美片视频免费播放，并從圖像中提取嵌入的水印信息；由于正版和盜版印刷過程對水印的破壞程度區(qū)別明顯亚洲韩国黄色网址，該方法最終通過計算水印提取的正確率來度量這種破壞人人操操人人，并將其與預(yù)先制定的閾值進行比較來判定印刷品的正偽。