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1988
Gasull A, Marqués F, Sallent S, Torres L, Vidal J. Detección automática de contornos en imágenes ecográficas. In III Simposium Nacional de Reconocimiento de Formas y Análisis de Imágenes. 1988. pp. 1–4.
1998
Vidal J, Sayrol E, Lagunas M. Autentificacion digital de imagen, marcado y detección óptimos. In XIII Simposium Nacional de la Unión Científica Internacional de Radio. 1998. pp. 105–106.
Vidal J, Sayrol E. Optimum Watermark Detection and Embedding in Digital Images. In 1998 IEEE Second Workshop on Multimedia Signal Processing. 1998. pp. 285–290.
1999
Vidal J, Sayrol E, Cabanillas S, Santamaría S. Non-Noticeable Information Embedding in Color Images : Marking and Detection. In 33rd ANNUAL - 1999 International Carnahan Conference on Security Technology. 1999. pp. 293–297.
Sayrol E, Vidal J, Cabanillas S, Santamaría S. Optimum Watermark Detection in Color Images. In 1999 IEEE International Conference on Image Processing. 1999. pp. 1–5.
2000
Vidal J, Sayrol E, Maribel M. Data Hidding in Color Images using Perceptual Models. In COST 254 Intelligent Processing and Facilities for Communications Terminals. 2000. pp. 21–25.
2002
Vidal J, Maribel M, Sayrol E. Color Image Watermarking Using Channel-State Knowledge. In SPIE Electronic Imaging 2002. 2002. pp. 214–221.
2003
Ventosa S, Sayrol E, Vidal J. Perceptual mask estimation from watermarked images. In SPIE Electronic Imaging 2003. 2003. pp. 10–17.