Esquema robusto ante ataques de desincronización para marcas de agua en audio
Digital audio watermarking is a recent technique that assists with copyright protection. This technique inserts additional data of the owner or the purchaser of a work. The fundamental aim of digital watermarking is to insert additional data in an electronic _le (such as images, audio or video), in...
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| Format: | master thesis |
| Status: | Versión aceptada para publicación |
| Publication Date: | 2012 |
| Country: | México |
| Institution: | Instituto Nacional de Astrofísica, Óptica y Electrónica |
| Repository: | Repositorio Institucional del INAOE |
| Language: | Spanish |
| OAI Identifier: | oai:inaoe.repositorioinstitucional.mx:1009/759 |
| Online Access: | http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/759 |
| Access Level: | Open access |
| Keyword: | info:eu-repo/classification/Codificación de audio/Audio coding info:eu-repo/classification/Distribuciones estadísticas/Statistical distributions info:eu-repo/classification/Sincronización/Synchronisation info:eu-repo/classification/Marca de agua/Watermarking info:eu-repo/classification/Transformada de Wavelet/Wavelet transforms info:eu-repo/classification/cti/1 info:eu-repo/classification/cti/12 info:eu-repo/classification/cti/1203 |
| Summary: | Digital audio watermarking is a recent technique that assists with copyright protection. This technique inserts additional data of the owner or the purchaser of a work. The fundamental aim of digital watermarking is to insert additional data in an electronic _le (such as images, audio or video), in a way that a human observer cannot detect its presence. In this research project we develop an audio watermarking scheme that is robust against desynchronization attacks. These kinds of attacks are of great interest in the area, because they make most of the recent watermarking schemes to fail. The strategy used in the proposed scheme against these attacks is to take low frequency DWT coefficients in order to construct a histogram; adjacent groups of bins from this histogram are used to insert the watermark. The detection is performed in a similar manner, the histogram is reconstructed and the same groups of adjacent bins are interpreted as the inserted watermark. |
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