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3차원 오브젝트의 隱線除去를 위한 竝列處理技法의 提案 및 口現
柳明春,徐熙敦 嶺南大學校 工業技術硏究所 1991 연구보고 Vol.19 No.1
It is difficult to remove hidden lines or hidden surfaces using conventional algorithms when the shape of the object is complex or real time processing is required. In this paper, we proposed a parallel processing method to reduce the time needed in removing hidden lines of 3-dimensional objects, and implemented it using C language. The parallel processing system to estimate the efficiency of the proposed method is composed of 4 sets of IBM PC/XT(4.77MHz) and a shared memory which is shared by 4 sets of PC. And we constructed system control function libraries using assembly language and C language. The result shows that the speed-up factor of 3.8 times for one data and 3.5 times for the other data was gained accordance with the experiments.
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우성준,김광호,유명춘,하진영 강원대학교 정보통신연구소 2008 정보통신논문지 Vol.12 No.-
Although information technology has been developed fast, large amount of machine printed document images are not properly handled due to immature document layout analysis techniques. Previous research has focused on character recognition itself to improve character recognition accuracy. Recently, however, some efforts are made to analyze complex document layout automatically. In this paper, we propose document layout analysis and understanding method for various Hangul document images. Skew detection is performed using projection profile and connected component layout information. Top-down and bottom-up methods are combined to analyze document layout. After text region and non-text region determination, table is further processed to extract row, column, and cell position. We got very high performance for skew correction, zone detection, and table processig from experiments with various Hangul document images.
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