On Digital Image Watermarking Robust to Geometric Transformations. - Vinicius Licks; Ramiro Jordan (ICIP, 2000)

The effect of the random jitter attack on the bit error rate performance of spatial domain image watermarking. - Vinicius Licks; Fabrício Ourique; Ramiro Jordan; Fernando Pérez-González (ICIP (2), 2003)

Performance bounds on optimal watermark synchronizers. - Vinicius Licks; Fabrício Ourique; Ramiro Jordan (Security, Steganography, and Watermarking of Multimedia Contents, 2004)

An Exact Expression for the Bit Error Probability in Angle QIM Watermarking Under Simultaneous Amplitude Scaling and AWGN Attacks. - Vinicius Licks; Fabrício Ourique; Ramiro Jordan; Fernando Pérez-González (ICASSP (2), 2005)

Angle QIM: a novel watermark embedding scheme robust against amplitude scaling distortions. - Fabrício Ourique; Vinicius Licks; Ramiro Jordan; Fernando Pérez-González (ICASSP (2), 2005)

Angle QIM: on document to watermark ratio analysis. - Fabrício Ourique; Vinicius Licks; Ramiro Jordan (ISSPA, 2005)

Geometric Attacks on Image Watermarking Systems. - Vinicius Licks; Ramiro Jordan (IEEE Multim., 2005)