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3-D Surface Characterization Using a Structured Light Technique
Jorge A. Silva; Ana C. Paiva; André Restivo; Aurélio C. Campilho; J. Laranja PontesA three-dimensional data acquisition system, using a structured-light technique, based on the fast projection of a sequence of patterns on the scene under analysis, is described. This system has multiple applications, namely, in anthropometry. Its first application will be the estimation of woman breast volume, aiming at the sizing of prosthesis and breast cancer related studies. ;...
Real-time ultrasound to predict rabbit carcass composition and volume of longis...
Jorge, A.,; Silva, S,; Mourão, Jose Luís; Guedes, C,; Pinheiro, V. M..Real-time ultrasonography (RTU) was used to measure the longissimus dorsi muscle (LM) volume in vivo and to predict the carcass composition of rabbits. For this, 63 New Zealand White × Californian rabbits with 2093±63 g live weight were used. Animals were scanned between the 6th and 7th lumbar vertebrae using an RTU equipment with a 7.5 MHz probe. Measurements of LM volume were obtianed both in vivo and on carc...
Motion in depth : audiovisual synchrony perception of walkers as a function of ...
Santos, Jorge A.; Silva, Carlos; Mendonça, CatarinaAudiovisual perception is still an intriguing phenomenon, especially when we think about the physical and neuronal differences underlying the perception of sound and light. Physically, there is a delay of ~3 ms/m between the emission of a sound and its arrival to the observer. On the other hand, we know that acoustic transduction is a fast process (~1ms) (Coney & Hudspeth, 1979), while phototransduction takes o...
The role of self-motion in acrophobia treatment
Coelho, Carlos M.; Santos, Jorge A.; Silva, Carlos; Wallis, Guy; Tichon, Jennifer; Hine, Trevor J.Acrophobia is a chronic, highly debilitating disorder preventing sufferers from engaging with high places. Its etiology is linked to the development of mobility during infancy. We evaluated the efficacy of various types of movement in the treatment of this disorder within a virtual reality (VR) environment. Four men and four women who were diagnosed with acrophobia were tested in a virtual environment reproduci...
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