Albert Parra

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In this paper, we propose an extension to our previous work on food portion size estimation using a single image and a multi-view volume estimation method. The single-view technique estimates food volume by using prior information (segmentation and food labels) generated from food identification methods we described earlier. For multi-view volume(More)
In this paper we investigate a method for selectively modifying a video stream using a color contrast sensitivity model based on the human visual system. The model identifies regions of high variance with frame to frame differences that are visually imperceptible to a human observer with normal color vision. The model is based on the CIELAB and the CIE ΔE(More)
ii ACKNOWLEDGMENTS I would like to begin by giving thanks to my major advisor, Professor Mark J.T. Smith, for his guidance and support both financially and mentally. His attitudes towards his work and good habits influenced me deeply. As the head of ECE department, he had numerous meetings to attend during the day, however, he managed to focus on his(More)
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