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High-resolution and Low-bit-rate Lecture-Video Distributing System for Chalk-and-Talk Based Lectures

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  • 高精細低容量な板書講義映像生成システム
  • コウセイサイ テイヨウリョウ ナ バンショ コウギ エイゾウ セイセイ システム

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Abstract

We proposed the high-resolution and low-bit-rate lecture-video distributing system for the chalk-and-talk based lectures. The preliminary experiment on the VoD based e-lecture showed that students are conscious of the following two issues: (1) written letters are legible and (2) the lecturer's indicating position is recognizable. In consideration of these, we proposed a high-resolution and low-bit-rate lecture-video distributing system for chalk-and-talk based lectures. The proposed system superimposes two kinds of camera images: one is low-resolution video from a digital camcorder and the other, the high-resolution image sequences from a digital still camera. The subjective assessment experiment showed the effectiveness of the proposed system.

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