| Presentation | 2021-08-25 Extraction of watermarks from video frames by using BSS Akane Yokota, Masaki Kawamura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We propose a method for extracting watermarks additively embedded in video frames by using blind source separation (BSS). Conventional additive embedding methods require the original signal during decoding. A video consists of a sequence of multiple still images, andsimilarity between successive frames is high. By using the similarity between frames and the BSS technique, we show that the proposed method can perform blind decoding. After separating the original signal and the watermark from the stego-frames by BSS, it is necessary to identify the frame containing the watermark from the separated signals. We propose a method to identify watermarked frames based on correlation. We embedded a binary image, or logo, into frames as a watermark. Since the embedding strength $¥beta$ affects the quality of videoand the bit error rate (BER) of the estimated image, the PSNR for stego-frames and BER for the image were evaluated. In the case that the strength was weak, the PSNR was over $47~¥mathrm{dB}$, but the BER was $0.3$ at maximum. In the case of strong strength, the PSNR was $30$ to $42~¥mathrm{dB}$ and the BER was less than $0.1$. As a result, the embedding strength of $¥beta=0.02$ was recommended, which achieved $¥mathrm{PSNR}>42~¥mathrm{dB}$ and $¥mathrm{BER}<0.1$. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | digital watermarking / blind source separation / video |
| Paper # | LOIS2021-17,IE2021-12,EMM2021-47 |
| Date of Issue | 2021-08-18 (LOIS, IE, EMM) |
| Conference Information | |
| Committee | ITE-ME / EMM / IE / LOIS / IEE-CMN / IPSJ-AVM |
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| Conference Date | 2021/8/25(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hiroyuki Arai(Nippon Inst. of Tech.) / Ryoichi Nishimura(NICT) / Kazuya Kodama(NII) / Toru Kobayashi(Nagasaki Univ.) / Shun Morimura(CRIEPI) / 笠井 裕之(早大) |
| Vice Chair | Shogo Muramatsu(Niigata Univ.) / Masaaki Fujiyoshi(Tokyo Metropolitan Univ.) / Masatsugu Ichino(Univ. of Electro-Comm.) / Hiroyuki Bandoh(NTT) / Toshihiko Yamazaki(Univ. of Tokyo) / Hiroyuki Toda(NTT) / Kouji Hirata(Kansai Univ) |
| Secretary | Shogo Muramatsu(Univ. of Fukui) / Masaaki Fujiyoshi(Utsunomiya Univ.) / Masatsugu Ichino(NICT) / Hiroyuki Bandoh(KDDI Research) / Toshihiko Yamazaki(Nagoya Inst. of Tech.) / Hiroyuki Toda(Nagasaki Univ.) / Kouji Hirata(NTT) / (Tokai Univ.) |
| Assistant | / Shoko Imaizumi(Chiba Univ.) / Youichi Takashima(Kaishi Professional Univ.) / Shunsuke Iwamura(NHK) / Shinobu Kudo(NTT) / Kazuki Fukae(Nagasaki Univ.) / 伊藤 友輔(東京理科大) / 原田 登志雅(東京電力パワーグリッド) |
| Paper Information | |
| Registration To | Technical Group on Media Engineering / Technical Committee on Enriched MultiMedia / Technical Committee on Image Engineering / Technical Committee on Life Intelligence and Office Information Systems / Technical Meeting on Communications / Special Interest Group on Audio Visual and Multimedia Information Processing |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Extraction of watermarks from video frames by using BSS |
| Sub Title (in English) | |
| Keyword(1) | digital watermarking |
| Keyword(2) | blind source separation |
| Keyword(3) | video |
| 1st Author's Name | Akane Yokota |
| 1st Author's Affiliation | Yamaguchi University(Yamaguchi Univ.) |
| 2nd Author's Name | Masaki Kawamura |
| 2nd Author's Affiliation | Yamaguchi University(Yamaguchi Univ.) |
| Date | 2021-08-25 |
| Paper # | LOIS2021-17,IE2021-12,EMM2021-47 |
| Volume (vol) | vol.121 |
| Number (no) | LOIS-146,IE-147,EMM-148 |
| Page | pp.pp.7-12(LOIS), pp.7-12(IE), pp.7-12(EMM), |
| #Pages | 6 |
| Date of Issue | 2021-08-18 (LOIS, IE, EMM) |