A New DCT Based Watermarking Method Using Luminance Component
| Autor: | Murat Yesilyurt, Yildiray Yalman, Ahmet Turan Özcerit |
|---|---|
| Přispěvatelé: | Sakarya Üniversitesi/Bilgisayar Ve Bilişim Bilimleri Fakültesi/Bilgisayar Mühendisliği Bölümü, Özcerit, Ahmet Turan, Yesilyurt, Murat |
| Rok vydání: | 2013 |
| Předmět: |
Color image
business.industry Data_MISCELLANEOUS Mühendislik ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION YCbCr Watermark Digital image Engineering Computer Science::Multimedia Discrete cosine transform Lapped transform Computer vision Artificial intelligence Electrical and Electronic Engineering business Digital watermarking Transform coding Computer Science::Cryptography and Security Mathematics |
| Zdroj: | Electronics and Electrical Engineering. 19 |
| ISSN: | 2029-5731 1392-1215 |
| DOI: | 10.5755/j01.eee.19.4.2015 |
| Popis: | The main purpose of the digital watermarking isto provide information security and copyright protection. Fromthis point of view, a robust blind watermarking method basedon Discrete Cosine Transform for colour images is proposed inthis paper. The proposed method provides hiding a binarywatermark in a compressed Digital Colour Image. First, theDigital Color Image is transformed into YCbCr from RGBcolor space and then the Discrete Cosine Transform middleband of the luminance (Y) component is used for watermarkingprocesses. Each bit of the binary watermark is embedded in adifferent Discrete Cosine Transform block. Thus, deteriorationon the image is minimized achieving high invisibility. Thesituation is checked whether the watermark is lost after theimage saved. If the watermark is lost in any block, the averageof some neighbouring Discrete Cosine Transform coefficients isused for embedding the watermark bit. The experimentalresults show that the proposed method can be safely used whenpoint of interest is binary watermarks. Moreover, extractionprocesses do not need the cover image and the watermark isrecovered completely. Statistical and perceptual qualityevaluations show that the proposed method is better than itscounterparts. DOI: http://dx.doi.org/10.5755/j01.eee.19.4.2015 |
| Databáze: | OpenAIRE |
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