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domain of the analysis of sports video. Considering soccer video, in most cases, the cross-points can be used for calibration at the center of the soccer field are not sufficient, so this paper introduces a new automatic camera calibration algorithm focus on solving this problem by using the properties of images of the center circle, halfway line and a(More)
The interior airflow visualization of a U-type fin-and-tube heat exchanger was investigated numerically and experimentally. Numerical results presented detail information of whole airflow field. Smoke test using dry ice showed visualization of airflow, on the other hand, numerical method was validated by experimental results. High and low airflow velocity(More)
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