用盲字印 的英文怎麼說
中文拼音 [yòngmángzìyìn]
用盲字印
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Since two patches are used, it can detect the embedded watermarks without the original host images, which makes it a blind watermarking algorithm. finally, the paper shows the further research direction in audio digital watermarking
最後，藉助圖像數字水印中的patchwork演算法思想，提出了一種用於dct變換域的音頻數字水印方案，該技術利用兩個樣值的平均值和方差實現了水印信息的盲檢測。Pdf x - 3 graphic technology - prepress digital data exchange - use of pdf - part 3 : blind exchange suitable for colour - managed workflows pdf x - 3
圖形技術.預印數字數據交換. pdf格式使用.第3部分:適用於顏色管理工作流的盲交換Comparing with the image watermarking, the audio watermarking have a few characteristics : 1. comparing with the visual media, audio frequency signal has less sampling points at every time interval. 2. owing to human audition systems, it is more sensitive than human vision systems, therefore, it is more trouble to realize the imperceptibility of audition compared to the vision systems. 3. to stick up to the cut attack, embedded watermark should keep synchronization. 4. because of the bigger memory payload of audio frequency signal, the initial audio frequency signal must be removed during the extract in order to protect the maneuverability of project
數字水印技術是近幾年來學術界興起的一個前沿研究領域，提高演算法的魯棒性、安全性、實用性是數字水印的研究方向。本文提出的基於可視密碼術的小波域下量化系數的魯棒性音頻數字水印方案，其優點在於利用小波變換的多解析度特性在保證水印魯棒性的同時使水印對原始音頻信號的影響達到最小，採用量化系數的方法嵌入水印信息實現了盲水印，提高水印的工程應用價值。A new type of blind watermarking technology, which has the advantage of adopting watermarking embedding algorithm is introduced based on wavelet transform and cosine transform, so the original image isn ' t necessary when picking up watermarking and the transparency and robustness of digital watermarking system is well fulfilled, the attack in the forms of noise, median filtering and compress can be withstood, and high pass filtering and low pass filtering can also be endured
摘要詳細介紹了基於一種新型的基於小波變換和餘弦變換的盲水印數字水印技術，這種方法的一個顯著的優點就是採用水印嵌入演算法，提取水印的時候不需要原圖象，能夠很好的滿足了數字水印系統的透明性和魯棒性，能夠經受住加入噪聲、中值濾波、壓縮等方式的攻擊，並且還能夠經受住高通濾波和低通濾波。分享友人