Then, according to research on nonisotropic transformation in geometric attack, this *** further spreads the application field of scale-space theory in watermark design and proposes an algorithm against geometric attack grounded on affine invariant feature point.

然后欧美黄色网站网址，通過對(duì)幾何攻擊中的非同向性變換的研討免费av在线不卡澳门，入一步擴(kuò)鋪尺度空間理論在水印設(shè)計(jì)中的應(yīng)用美女的胸又www又黄的视频无卡顿，提出一種基于仿射不變特性點(diǎn)的抗幾何攻擊算法黄色长成年视频在线看。

Experimental results show that the watermark is perceptually invisible and the proposed scheme is robust to various image processing operations.

實(shí)驗(yàn)結(jié)果表明水印是不可感知的妓女视频一区二区，并且對(duì)于各種圖像處理操作是魯棒的蜜桃无码成人影片在线播放视频网站。

It attempts to identify the true owner by hiding perceptually invisible information inside the digital data. In this thesis, for the purpose of protecting the Intellectual Property Rights of digital images, a Discrete Wavelet Transform based digital watermark algorithm is described.

在這個(gè)背景下，如何防止具有版權(quán)的數(shù)字?jǐn)?shù)據(jù)在未經(jīng)允許的情況下www.av黄，被非法的使用或是傳播日韩一级a欧美水蜜桃，這就提出新的研究的課題：就是如何運(yùn)用現(xiàn)有的理論和技術(shù)，更好的解決數(shù)字產(chǎn)品所有者的合法權(quán)益的保護(hù)問題免费视频,国产精品。

For 3D model copyright protection, we propose a robust watermarking algorithm for 3D models which embeds watermark information by perturbing the distance between the vertices of the model to the centre of the model.

針對(duì)三維模型版權(quán)保護(hù)應(yīng)用国产原创精品无遮挡v视觉影院，我們提出了一種穩(wěn)健的三維模型水印算法，它通過修改從模型中心到頂點(diǎn)的向量長(zhǎng)度來嵌入水印亚洲成l人在线观看线路。

We adjust the strength of embedded watermark in according to the visual model in the ridgelet domain.

論文根據(jù)小脊變換域中的視覺模型久999，按照小脊變換域中計(jì)算出水印嵌入強(qiáng)度的權(quán)重，用擴(kuò)頻的方法來嵌入水印信息精品亚洲欧美国产日韩AV无码。

The original video is spitted into a series of frame groups,for each frame in the group,the points of contour shape are described by MPEG-7,and taking advantage of hash function to calculate the keys between those points in the 1D- DFT transform domain and the watermark signals.

在該算法中aaaa69，原始視頻數(shù)據(jù)被分割成等幀數(shù)的視頻組，利用MPEG-7的輪廓編碼計(jì)算每個(gè)視頻幀的主要物體輪廓坐標(biāo)點(diǎn)集合国产清纯；接著通過傅立葉變換得到該幀輪廓點(diǎn)形狀不變量黄色网站毛片网站，利用哈希的方法計(jì)算水印信號(hào)并將這些不變量的有效值作為密鑰之一；再對(duì)整個(gè)視頻組的輪廓點(diǎn)進(jìn)行傅立葉變換久久精品兔费99国产精品，得到其時(shí)間軸上的有效不變域久久99久久992019，將水印信號(hào)嵌入在這個(gè)不變域的中頻部分以確保了水印的魯棒性。

This method does not require any training and can be widely used on steganography and watermark of JPEG images from various sources.

該算法無需任何的訓(xùn)練過程国产特a毛片，對(duì)JPEG圖像的各種數(shù)字圖像隱藏和水印具有廣泛的效果亚洲毛片在线直播大全。

First, using chaotic sequences, an algorithm of embedding watermark in low frequency subband of wavelet transform image is designed.

第一，利用混沌序列的優(yōu)良性能，提出了一種在小波圖像低頻系數(shù)中嵌入水印及檢測(cè)的算法2021免费三级片。

Digital watermark is embedded into the middle frequency subband images of the original image in discrete wavelet transformation domain.

研究基于小波變換域的數(shù)字水印的嵌入對(duì)策和檢測(cè)方法AⅤ精品视频在线观看，實(shí)現(xiàn)了數(shù)字水印自適應(yīng)地嵌入到原始圖像離散小波變換域的中頻子帶圖像中。

He can start by selecting, for example, a paperboard which is more difficult to copy because it employs the watermark technique (see TJI 2/2002) and then add other features to the pack itself, such as for instance a micro-coding system.

他可以從精選入手日批国产，比如亚洲一区无毛片免费在线观看，紙板由于其運(yùn)用了水印技術(shù)（參看TJI 2/2002）在結(jié)合包裝盒本身的一些其他特性像微碼設(shè)計(jì)系統(tǒng)，會(huì)變得更難偽造手机日韩精品第一页在线观看免费。