| Paper Abstract and Keywords |
| Presentation |
2021-08-25 13:25
Extraction of watermarks from video frames by using BSS
Akane Yokota, Masaki Kawamura (Yamaguchi Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (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, and
similarity 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 video
and 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) |
| (in English) |
digital watermarking / blind source separation / video / / / / / |
| Reference Info. |
ITE Tech. Rep. |
| Paper # |
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| Date of Issue |
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| Download PDF |
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| Conference Information |
| Committee |
IEICE-LOIS IEICE-EMM IEICE-IE IEE-CMN ME IPSJ-AVM |
| Conference Date |
2021-08-25 - 2021-08-26 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Online |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
IEICE-EMM |
| Conference Code |
2021-08-ME-EMM-IE-LOIS-CMN-AVM |
| Language |
Japanese |
| 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) |
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| Keyword(1) |
digital watermarking |
| Keyword(2) |
blind source separation |
| Keyword(3) |
video |
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| 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.) |
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| Speaker |
Author-1 |
| Date Time |
2021-08-25 13:25:00 |
| Presentation Time |
25 minutes |
| Registration for |
IEICE-EMM |
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| Volume (vol) |
vol.45 |
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