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題名 | A Multiresolution Video Watermarking Scheme Integrated with Feature Detection |
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作者姓名(外文) | Ko, Chien-chuan; Kuo, Yung-lung; Hsu, Jeng-muh; Yang, Bo-zhi; | 書刊名 | Journal of The Chinese Institute of Engineers |
卷期 | 36:7 2013.10[民102.10] |
頁次 | 頁878-889 |
分類號 | 312.1 |
關鍵詞 | Watermarking; Feature block; Spread spectrum technique; JND; Hash image; |
語文 | 英文(English) |
英文摘要 | This study aims at protecting copyright by embedding watermarks into a video. It embeds watermarks into image block which contains features with high intensity, high texture and high motion to improve the robustness. Since human visual system (HVS) less easy to sense variations caused by high brightness, high texture, and fast moving regions within the video frames, an adaptive watermarking scheme was developed to embed watermark signals into these regions. To this end, a digital video is first divided into various frames consist several blocks which are transformed by discrete wavelet transform. Spread spectrum incorporated with just notice difference (JND) is then exploited to embed the watermark into the feature blocks. Unlike the traditional watermarking, the proposed method does not alter the quality of video while it is extremely not prone to be attacked. This allows us to provide maximum strength in video processing. Our scheme, moreover, provides very good results in terms of attacks generated by linear transformations including average, frame reduction, and frame shuttle. |
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