載體棒 的英文怎麼說
中文拼音 [zǎitǐbàng]
載體棒
英文
support rod-
In semi - fragile image watermarking algorithm, a robust watermark and a fragile watermark are extracted from the third approximation coefficient of wavelet transform of the original image. the two watermarks are embedded into the third vertical and horizontal detail coefficients. when authenticating image, image can be authenticated correctly and attacked parts can be localized through comparing the original watermarks and extracted watermarks
其中，完全認證方法，利用qr分解的特性把圖像的邊緣信息嵌入到載體圖像中，演算法對各種攻擊都具有很好的敏感性;內容認證方法，從載體圖像中提取出一個脆弱水印和一個魯棒水印，並把它們重新嵌入到載體圖像中，認證時，通過兩個水印在圖像傳輸前後的變化情況來對圖像的保留價值進行評估，並準確定位受攻擊部位。In this paper, chroma dc coefficients are selected as the carrier data because chroma dc coefficients are robust. also, alterable steps are used to select one part of the coefficients, so the watermark is imperceptible ; before watermark embedding, the watermark is divided into many parts, every part is individually embedded into one gop of the video, even if a gop is destroyed, the watermark can be extracted correctly, this methods promotes the robustness of the watermark ; in addition, in order to promote the security of the watermark, the user ' s id and password are used to generate chaos sequence by the chaos system which is created in this paper, later, watermark is mixed by the chaos sequence. also, the embedding position of the watermark bit is modified by one chaos sequence, so, unauthorized person can not extract or remove the watermark, since the embedding position is unknown
本文認為，色度dc系數是魯棒性非常好的參數，因而選擇色度dc系數作為水印信息載體，同時，採用可變的步長選擇部分系數，保證了水印的隱形性；在嵌入水印時，本文採用水印信息「網格劃分」 、各子塊獨立嵌入視頻的方案，由於水印信息子塊是相對獨立的嵌入視頻中的每一相對獨立的圖組當中，即使某一圖組收到一定破壞，也能夠恢復水印信息，使水印的健壯性得到提高；此外，為了提高水印信息的安全性，在嵌入水印信息時，根據用戶輸入的id號和密碼，利用本文構造的混沌系統產生的混沌序列對水印信息進行變換，同時，對每一水印信息比特的嵌入位置也採用了偽隨機序列進行調整，這樣，未授權用戶不能提取水印信息，也難以擦除其中的水印信息，因為嵌入的位置是未知的。This method obtains structure types and strokes of chinese characters through chinese characters mathematic expression, and then the whole document is divided into two blocks by utilizing structure types of chinese characters. in each block, the position selected to embed is chose by chinese character ’ s strokes and the watermarking bit. watermarking bits with a robust structure is generated by chaos encrypting and hamming checkout coding ; embedding is implemented through setting underline to font
該方法通過漢字數學表達式，獲取漢字的結構類型和筆畫數，利用漢字的結構類型將整個文檔分成兩塊，在各塊中由漢字筆畫數和水印比特位共同確定水印加載的位置，通過混沌加密和海明校驗編碼將水印生成一種具有魯棒性的水印結構，然後通過設置字體下劃線將水印按對稱性的嵌入策略分別嵌入文本的兩塊中。The simulation result indicates that the improved image - stabilization platform control strategy can guarantee the system robustness, and greatly improve the platform isolation performance against vehicle disturbance
模擬結果表明，這種改進的穩像平臺滑模控制策略在保證系統魯棒性的同時，能夠大大提高平臺對載體擾動的隔離性能。Give precise criterions and descriptions of some important concepts and disposals of data - hiding technique such as cover, stego - object, hiding information, data embedding, data extraction, stego - key, stego - analysis, insensibility, covert communication, digital watermarking, robustness and etc. then propose a general mathematical model of data hiding which cover most models proposed in other papers and establish the basis for further theory analysis
本論文獨立完成的主要成果有： （ 1 ）對信息隱藏技術中的一些重要概念和處理給出了準確的規范和描述，主要有隱秘載體、隱秘對象、秘密信息、數據嵌入、數據提取、隱秘密鑰、隱秘分析、不可感知性、隱秘通信、數字水印、魯棒性等。This arithmetic can detect the digital watermark without the original carrier image and the original watermark. experimental results prove that this arithmetic can hide the meaningful watermark efficiently in the carrier image, and it is robust enough to resist some image degradation processing such as clipping, jpeg compression, adding noise, image enhancing, filtering and so on
實驗浙江工業大學碩士學位論文結果表明，該演算法可有效的將有意義的二值水印圖像嵌入到彩色載體圖像中，在抽取水印圖像時不需要原始載體圖像和原始水印圖像，並對裁剪、 jpeg壓縮、加噪、圖像增強、濾波等處理都有很好的抵抗力，具有較好的魯棒性。The amount of energy that a is capable of converting from electrical to heat energy depends on the ambient furnace temperature and atmosphere in which it is operating
熔爐內電能轉化為熱能的能量數主要依賴于硅碳棒載爐內的控制溫度和氣體環境。( 2 ) based on the concept of watermarking as communication with side information which was proposed by cox, we proposed a watermarking algorithm, by using the information extracted from cover image at the embedder, this watermarking strategy has achieved partial resistance to geometrical transformations and some common image processing operations
（ 2 ）通過參考cox的邊信息水印思想，實現了一種水印演算法，在水印嵌入器設計中充分利用載體圖像的固有信息，使水印系統對常見的圖像處理和部分幾何攻擊具有魯棒性。分享友人