| Presentation | 2023-03-02 [Poster Presentation] Watermark Extraction Method Using BSS Nao Harada, Rinka Kawano, Masaki Kawamura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | To improve the quality of stego-videos, we consider embedding method of watermarks in blocks where the differences between video frames are large. Since videos and watermarks are independent signal sources, they can be separated using the blind source separation (BSS) technique. In the previous watermarking method using BSS, the frames with and without embedded watermarks were placed alternately, so the presence of the watermark was easily noticed. Therefore, we propose a method that embeds watermarks in selected blocks with large differences between frames. From the signals separated by BSS, it is necessary to identify the video signal and the watermark. The signal containing the watermark is therefore estimated using correlation. Binary logo images are used as watermarks. The bit error rate (BER) of the estimated logo image and the PSNR of the video frame were evaluated with respect to the embedding strength $alpha$. By extracting and averaging multiple watermarks embedded in a video, when the embedding strength $alpha$ was 0.03, the averaged logo image could be extracted with BER less than 0.01 and PSNR of the video was 59 dB. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | watermarking method / video / blind signal separation / independent component analysis |
| Paper # | EMM2022-80 |
| Date of Issue | 2023-02-23 (EMM) |
| Conference Information | |
| Committee | EMM |
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| Conference Date | 2023/3/2(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Fukue culture hall |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Ryoichi Nishimura(NICT) |
| Vice Chair | Kotaro Sonoda(Nagasaki Univ.) / Masatsugu Ichino(Univ. of Electro-Comm.) |
| Secretary | Kotaro Sonoda(Kaishi Professional Univ.) / Masatsugu Ichino(Chiba Univ.) |
| Assistant | Tomoko Kajiyama(Hiroshima City Univ.) / Shieyuki Sakazawa(Osaka Inst. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on Enriched MultiMedia |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Poster Presentation] Watermark Extraction Method Using BSS |
| Sub Title (in English) | Improving Image Quality Using Inter-frame Difference |
| Keyword(1) | watermarking method |
| Keyword(2) | video |
| Keyword(3) | blind signal separation |
| Keyword(4) | independent component analysis |
| 1st Author's Name | Nao Harada |
| 1st Author's Affiliation | Yamaguchi University(Yamaguchi Univ.) |
| 2nd Author's Name | Rinka Kawano |
| 2nd Author's Affiliation | Yamaguchi University(Yamaguchi Univ.) |
| 3rd Author's Name | Masaki Kawamura |
| 3rd Author's Affiliation | Yamaguchi University(Yamaguchi Univ.) |
| Date | 2023-03-02 |
| Paper # | EMM2022-80 |
| Volume (vol) | vol.122 |
| Number (no) | EMM-412 |
| Page | pp.pp.66-71(EMM), |
| #Pages | 6 |
| Date of Issue | 2023-02-23 (EMM) |