Resumen

AVILA-DOMENECH, Ernesto. DWT-DCT based watermarking for handwritten document images: optimization against JPEG compression attacks.. Rev cuba cienc informat [online]. 2018, vol.12, n.2, pp. 30-43. ISSN 2227-1899.

This paper presents an optimization using a Genetic Algorithm of a technique based on the combination of two successful transforms, the Discrete Cosine Transform (DCT) and Discrete Wavelet Transform (DWT), specifically for handwritten documents images. The technique consists in applying the Wavelet Discrete Transform, dividing one of its bands into 8x8 blocks and applying the Discrete Cosine Transform to the selected blocks to insert information corresponding to the watermark. Then some of its components are modified according to the watermark to be inserted. The watermark will consist of a QR code. In addition, the results obtained in terms of perceptual quality (PSNR) and robustness (BER) are presented.

Palabras clave : genetic algorithm; hadwritten documents; DWT-DCT; QR code; watermarking.

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