教師資料查詢 | 類別: 會議論文 | 教師: 顏淑惠 Yen Shwu-huey (瀏覽個人網頁)

標題:A Watermarking Scheme Based on SVM and Tolerable Position Map
學年95
學期1
發表日期2006/10/08
作品名稱A Watermarking Scheme Based on SVM and Tolerable Position Map
作品名稱(其他語言)
著者顏淑惠
作品所屬單位淡江大學資訊工程學系
出版者Institute of Electrical and Electronics Engineers (IEEE)
會議名稱Systems, Man and Cybernetics, 2006. SMC '06. IEEE International Conference on
會議地點Taipei, Taiwan
摘要This paper presents a novel digital watermarking technique based on support vector machines (SVMs) and tolerable position map (TPM). The purpose of SVMs is two folds in this study. One is using SVM to identify tolerable positions for watermark embedding on the host image, and the other is using SVM to embed and extract watermarks. By simulating common image attacks on the host image, pixels which are invincible or vulnerable are identified and used for positive or negative samples for training an SVM. Apply this SVM can create a TPM for the host image. To embed and extract watermarks, we use a known binary sequence to train an SVM such that this SVM can be applied for embedding and extracting the watermark. In the proposed scheme, to improve robustness of attacks and image imperceptibility, the watermark is embedded according to the TPM and by asymmetrically tuning blue channels of the central and neighbor pixels. To further reducing extraction errors, the embedded watermark bits are re-modified if necessary according to classifying result of the trained SVM. Our scheme uses only 128 bits in training both SVMs, thus it is time efficient. Experiments show that the proposed scheme provides high PSNR of a watermarked image, low extraction error rate, and extremely robust to common image attacks.
關鍵字
語言英文
收錄於
會議性質
校內研討會地點
研討會時間20061008~20061011
通訊作者
國別中華民國
公開徵稿
出版型式紙本;電子版
出處Systems, Man and Cybernetics, 2006. SMC '06. IEEE International Conference on (Volume:4 ), pp.3170-3175
相關連結
Google+ 推薦功能,讓全世界都能看到您的推薦!