Yoshio Ohno

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We propose a web-based training system and courseware for advanced computer graphics for undergraduate students. By using the system, the students have no temporal and spatial limitations for learning computer graphics technologies. Once they can connect to the Internet, they can study for as much time as they wish and in any place. We have designed more(More)
SUMMARY This paper presents a method for lossy compression of digital video data by parametric line and Natural cubic spline approximation. The method estimates the variation of pixel values in the temporal dimension by taking group of pixels together as keyblocks and interpolating them in Euclidean space. Break and fit criterion is used to minimize the(More)
This paper presents a new hybrid scheme for image data compression using quadtree decomposition and para-metric line fitting. In the first phase of encoding, the input image is partitioned into quadrants using quadtree decomposition. To prevent from very small quadrants, a constraint of minimal block size is imposed during quadtree decomposition.(More)
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