Marc Bertran

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This paper proposes some modifications to reference models of the Human Visual System in the benefit of a best performing fingerprinting scheme inside wavelet decompressors. Two new algorithms have been developed, based on more accurate modeling for luminance masking and on experimental tests for texture masking. In order to manifest the improvements, the(More)
Cellulose samples from cotton and wood pulps with varying low degrees of crystallinity (mechanically decrystallized) were studied. The influence of initial cellulose crystallinity on sugar yield after enzymatic hydrolysis was determined by two different methods. As expected, samples with low crystallinity were much more accessible to enzymatic attack and(More)
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