標題: | 使用保守驗證之適應性線上Boosting偵測器 Adaptive On-line Boosting Detector with Conservative Verification |
作者: | 陳宥羽 林進燈 電控工程研究所 |
關鍵字: | 車輛偵測;增益式演算法;Vehicle detection;AdaBoost;On-line boosting |
公開日期: | 2014 |
摘要: | 在基於影像的即時車輛偵測中,AdaBoost演算法已經被廣泛的使用。然而,AdaBoost演算法訓練出的偵測器,為了偵測不同環境的車輛,需要大量的影像樣本來增加車輛的偵測率及降低誤判率。同時也表示,它的適性越廣,整個偵測器規模就會越大,導致偵測速度下降。 本研究提出應用on-line boosting解決AdaBoost演算法為了適應不同環境所產生的偵測器過載現象。主要使用AdaBoost演算法維持較好的車輛偵測效果及以On-line Boosting演算法降低偵測誤判率。我們提出的方法有以下優點: (1)降低車輛偵測器中弱分類器的總數,使偵測時處理速度變快。(2)降低偵測系統收斂的時間。 Adaboost algorithm is widely used in video-based real-time vehicle detection recently. However, to deal with the detection in different scene, AdaBoost algorithm requires huge data to train a detector with high detection rate and low false alarm rate. Accounting various environments, the adaboost detector is getting complex with high computational load.. Hence, this paper applied on-line boosting to resolve the overloading of AdaBoost detector for local bias of environments. We combine AdaBoost detection model with On-line Boosting model. We use AdaBoost model to detect most vehicles in high detection rate, and on-line boosting model to deal with false alarm arising in different environments. The proposed method has the following advantages: (1) Reducing number of features in the detector to deal with different environments, the processing speed become faster. (2) The proposed system can converge in a short time. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT070160058 http://hdl.handle.net/11536/75604 |
顯示於類別: | 畢業論文 |