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.
High-quality and small-capacity e-learning video featuring lecturer-superimposing PC screen images
Intelligent Robots and Computer Vision XXIV: Algorithms, Techniques, and Active Vision ; 2006 ; Boston,Massachusetts,United States
Proc. SPIE ; 6384
2006-10-01
Conference paper
Electronic Resource
English
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