2 October 2006 High-quality and small-capacity e-learning video featuring lecturer-superimposing PC screen images
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Abstract
Information processing and communication technology are progressing quickly, and are prevailing throughout various technological fields. Therefore, the development of such technology should respond to the needs for improvement of quality in the e-learning education system. The authors propose a new video-image compression processing system that ingeniously employs the features of the lecturing scene. While dynamic lecturing scene is shot by a digital video camera, screen images are electronically stored by a PC screen image capturing software in relatively long period at a practical class. Then, a lecturer and a lecture stick are extracted from the digital video images by pattern recognition techniques, and the extracted images are superimposed on the appropriate PC screen images by off-line processing. Thus, we have succeeded to create a high-quality and small-capacity (HQ/SC) video-on-demand educational content featuring the advantages: the high quality of image sharpness, the small electronic file capacity, and the realistic lecturer motion.
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Yoshihiko Nomura, Yoshihiko Nomura, Michinobu Murakami, Michinobu Murakami, Ryota Sakamoto, Ryota Sakamoto, Tokuhiro Sugiura, Tokuhiro Sugiura, Hirokazu Matsui, Hirokazu Matsui, Norihiko Kato, Norihiko Kato, "High-quality and small-capacity e-learning video featuring lecturer-superimposing PC screen images", Proc. SPIE 6384, Intelligent Robots and Computer Vision XXIV: Algorithms, Techniques, and Active Vision, 63840E (2 October 2006); doi: 10.1117/12.684672; https://doi.org/10.1117/12.684672
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