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This study implements mobile-phone camera text-recognition technology into a game-based assessment design. This game is created as an alternative assessment in vocabulary instruction for learning Indonesian as a Foreign Language classroom, to explore the effectiveness and the improvement of students' vocabulary, and to increase students' motivation in conducting assessment. This game is web-based...
Distortion is the main problem of CCD camera in image processing. In this paper, two self-tuning calibration methods of camera lens distortion are presented. Both the methods improve the calibration of camera when solving the problems of radial distortion, decentering distortion and prism distortion. In addition, the proposed methods do not need complex mathematical equation to calibrate the camera...
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