The following paper evaluates a watermark algorithm designed for digital images by using a perceptive mask and a normalization process, thus preventing human eye detection, as well as ensuring its robustness against common processing and geometric attacks. The Hermite transform is employed because it allows a perfect reconstruction of the image, while incorporating human visual system propertie...

Psychophysical length and width spatial interactions associated with a line target were measured in normal observers dichoptically and in observers with naturally acquired amblyopia to investigate the neural locus of end-stopped perceptive fields. Results show (1) interocular transfer of psychophysical end-stopping, flank-inhibition, and length and width summation; and (2) severe, but significa...

When a vernier target is flanked by optimally positioned lines, foveal vernier discrimination is strongly degraded (Westheimer and Hauske, 1975). We confirmed this observation (Experiment I) and have mapped out a 2 dimensional "perceptive field" for crowding in the fovea using a 2 dot target (Experiment II). Crowding was also measured in peripheral vision, using either small flanking dots as ma...

This article presents thoughts on the future of speech technology research, and a vision of the near future in which computer interaction is characterized by natural face-to-face conversations with lifelike characters that speak, emote and gesture. A first generation of these perceptive animated interfaces are now under development in a project called the Colorado Literacy Tutor, which uses per...

Background: fine motor function of school-aged children with dyslexia, learning disabilities and learning difficulties. Aim: this study aimed to characterize the fine motor, sensory and perceptive function of school-aged children with dyslexia, learning disabilities and learning difficulties and to correlate these results with the analysis of the children’s handwriting. Method: participants wer...

-Business Intelligence and Data Warehouse is most important role player in the enterprises. Data warehouse (DW) is a collection of integrated databases. The DWHDB are designed to support managerial decision-making and problemsolving functions. The data’s available in the DWHDB are very perceptive. Such perceptive information needs security so as to prevent this perceptive information from the u...