中国科学院机构知识库网格
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a practical covert channel identification approach in source code based on directed information flow graph 会议论文  OAI收割
2011 5th International Conference on Secure Software Integration and Reliability Improvement, SSIRI 2011, Jeju Island, Korea, Republic of, 27-Jun-02
Wu JingZheng; Ding Liping; Wang Yongji; Han Wei
  |  收藏  |  浏览/下载:23/0  |  提交时间:2011/10/10
Real time method for airport runway detection in aerial images (EI CONFERENCE) 会议论文  OAI收割
ICALIP 2008 - 2008 International Conference on Audio, Language and Image Processing, July 7, 2008 - July 9, 2008, Shanghai, China
作者:  
Wang Y.;  Wang Y.;  Wang Y.;  Wang Y.;  Wang Y.
收藏  |  浏览/下载:25/0  |  提交时间:2013/03/25
In this paper  we propose a novel method that combines improved chain codes based edge tracking (ICCBET) with Hough transform (HT) to successfully detect the airport runway in real time. ICCBET primarily removes the short and curving lines to reduce the pixels and confirms the approximate orientation to shorten the angle range HTprocesses in later. Furthermore  through using pyramid during HT stage  the computation cost is reduced considerably to satisfy real time performance. Finally  we fix the memory by designing a chain list array for the image to avoid overflow arise from building chain list with memory dynamic allocation. Experiments on various images show that our method satisfies the real time need with about 23.5 multiples computation reduction contrast to the original Hough transform (OHT) and overcomes the blur to localize the lines with high accuracy contrast to the original chain codes based edge tracking (OCCBET). 2008 IEEE.