教師資料查詢 | 類別: 會議論文 | 教師: 顏淑惠 Yen Shwu-huey (瀏覽個人網頁)

標題:An Anomaly Detection by Whitening HOSF
學年103
學期2
發表日期2015/03/24
作品名稱An Anomaly Detection by Whitening HOSF
作品名稱(其他語言)
著者Chun-Hui Wang; Yue Pan; 顏淑惠; Shwu-Huey Yen
作品所屬單位資訊工程學系暨研究所
出版者
會議名稱the 29th IEEE International Conference on Advanced Information Networking and Applications (AINA-2015)
會議地點Gwangju, South Korea
摘要In this paper an improvement over our previous work is proposed to handle short-medium range surveillance videos. The features of histogram of oriented social force (HOSF) are the primitive building blocks to capture the interactions among people. To reduce the correlation among data, whitening procedure is applied on features. We use Bag-of-Feature (BoF) to pool HOSF in a given frame. Since our goal is to classify whether a given frame is normal and BoF, a histogram of visual words in a frame, can better represent patterns in term of frame. In the phase of building the dictionary, training BoFs are clustered and the center means are so called code words corresponding to "normal" patterns observed during the training process. A Gaussian model is constructed for distances between data and the codeword in each cluster. To decide whether a given frame is normal, the BoF feature is evaluated and the Z-score which measuring the deviation to the closest codeword is calculated. If such BoF is an outlier (i.e. High Z-score) comparing to the closest codeword, then the frame is classified "abnormal". The method is testified by the subway dataset with promising results.
關鍵字bag-of-feature (BoF);normality;crowd;social force;histogram of oriented social force (HOSF);whitening
語言英文
收錄於
會議性質國際
校內研討會地點
研討會時間20150324~20150327
通訊作者顏淑惠; Shwu-Huey Yen
國別韓國
公開徵稿Y
出版型式電子版
出處Proceedings of the 29th IEEE International Conference on Advanced Information Networking and Applications (AINA-2015)
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