Bibliographic Information
- Other Title
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- ミンセイヨウ ビデオカメラ ニ ヨル 3ジゲン ドウサ ブンセキヨウ ドウキ シンゴウ ハッセイ ソウチ ノ シサク
- Development of a synchronizing signal generator for 3D motion analysis with household camcorders
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Abstract
To analyze 3D motion with 2 household degital camcorders, a synchronizing signal generator constructed by 10 pairs of LEDs and the driving circuit was developed, Ten pieces of red colored 5 cm wide line tape were attached on a L-shaped 1 m long white angle bar at outside surfaces of L-shape with a distance of each 5 cm, and on each red area 2 green LEDs were mounted at both surfaces and these 2 LEDs were connected in series. At video recording, each pair of LEDs (ten pairs in total) were lighted successively for each 1/600 second (1/10 single field time) once each cycle by a singechip mycrocomputer, and this cycle was repeated at intervals of 1 second. The angle bar was set in the vicinity of right or left end of the camera angle, and both outside surfaces of L-shape were trained to 2 camcorders. When an exposure of a camcorder comes across the lighting cycle of LEDs, a certain position and number of LEDs, corresponding to the delay from the lighting of the first pair and the duration of the exposure respectively, are recorded to a camcorder. Based on these records, the time difference of each exposure of 2 camcorders could be calculated, and the coordinates of the subject in the screen image derived from one camcorder could be converted to those synchronized to another camcorder by interpolation
Article
Journal
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- The scientific reports of Kyoto Prefectural University. Human environment and agriculture
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The scientific reports of Kyoto Prefectural University. Human environment and agriculture 58 9-17, 2006-12-25
京都 : 京都府立大学学術報告委員会
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Details 詳細情報について
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- CRID
- 1050845762555844992
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- NII Article ID
- 110006390012
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- NII Book ID
- AA11189254
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- NDL BIB ID
- 8679698
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- ISSN
- 13433954
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- Text Lang
- ja
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- Article Type
- departmental bulletin paper
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- Data Source
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- IRDB
- NDL
- CiNii Articles