Research on digital watermarking algorithm based on discrete cosine transform

Qian Deng; Zuxu Zou

doi:10.1117/12.2668152

28 March 2023 Research on digital watermarking algorithm based on discrete cosine transform

Qian Deng, Zuxu Zou

Proceedings Volume 12566, Fifth International Conference on Computer Information Science and Artificial Intelligence (CISAI 2022); 125663O (2023) https://doi.org/10.1117/12.2668152
Event: Fifth International Conference on Computer Information Science and Artificial Intelligence (CISAI 2022), 2022, Chongqing, China

Abstract

Hidden digital watermark is one of the important means of anti-counterfeiting to maintain copyright. By extracting the hidden digital watermark from images, audio and video through specific codes and algorithms, it can provide very strong and powerful evidence to prove one's copyright ownership. The idea is that the image is regarded as a two-dimensional matrix, and then according to the two-dimensional matrix to expand the corresponding operation, at the same time select the appropriate point, and according to the appropriate point in the digital watermark image, digital watermark embedded operation. In this paper, DCT is used to insert digital watermark data, and DCT reverse transformation method is used to realize the extraction function of digital watermark.

Citation Download Citation

Qian Deng and Zuxu Zou "Research on digital watermarking algorithm based on discrete cosine transform", Proc. SPIE 12566, Fifth International Conference on Computer Information Science and Artificial Intelligence (CISAI 2022), 125663O (28 March 2023); https://doi.org/10.1117/12.2668152

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KEYWORDS

Digital watermarking

Algorithm development

Image processing

Copyright

Tunable filters

Gaussian filters

Linear filtering

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