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Digital Watermarking for Vector Drawings based on Discrete Haar Wavelet Transform

International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Year of Publication: 2019
Yuichi Nakai, Kuya Kohara

Yuichi Nakai and Kuya Kohara. Digital Watermarking for Vector Drawings based on Discrete Haar Wavelet Transform. International Journal of Computer Applications 182(49):1-6, April 2019. BibTeX

	author = {Yuichi Nakai and Kuya Kohara},
	title = {Digital Watermarking for Vector Drawings based on Discrete Haar Wavelet Transform},
	journal = {International Journal of Computer Applications},
	issue_date = {April 2019},
	volume = {182},
	number = {49},
	month = {Apr},
	year = {2019},
	issn = {0975-8887},
	pages = {1-6},
	numpages = {6},
	url = {},
	doi = {10.5120/ijca2019918752},
	publisher = {Foundation of Computer Science (FCS), NY, USA},
	address = {New York, USA}


Recently, a massive amount of cartoons or “manga” comics are distributed in digital format. Although raster format is a current mainstream format, it will be likely to use vector format from the viewpoint of data capacity and image quality. In such a situation, copyright protection technology for vector format is strongly required. In this paper, we propose a novel digital watermarking scheme for vector drawings based on discrete Haar wavelet transform. By utilizing Haar wavelet transform, the proposed method has robustness against geometric transformations such as translation, rotation, and scaling. Experimental results show that the proposed method can successfully embed watermarks without causing significant degradation to the original drawings and it also has robustness against geometric transformations.


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Digital watermarking, vector drawing, discrete Haar wavelet transform