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基于擴展三角特征的AdaBoost快速人眼檢測算法

AdaBoost fast eye detection algorithm based on extended triangular features

  • 摘要: 首先給出了通過矩形塊與三角像素特征塊相結合所構造的八種用于眼睛檢測的擴展三角特征原型塊.考慮掃描塊在人臉背景中遍歷時眼睛樣本圖像塊數量遠少于非眼睛樣本塊數的實際,提出了一種結合Haar特征和三角特征的AdaBoost快速眼睛檢測算法.通過級聯分類器的前幾層強分類器完成排除大部分非眼睛樣本;然后,通過后續強分類器進行判斷大部分的眼睛圖像塊和少量非眼睛圖像塊.檢測時間消耗有所下降,這樣可以保證整體的檢測速度.實驗結果進一步表明該算法具有更好的檢測性能,與僅使用Haar特征相比正檢率有一定程度提高.

     

    Abstract: Eight extended feature prototypes were presented by combining rectangular feature blocks and triangular feature blocks. In consideration of the fact that the amount of eye image blocks is far less than that of non-eye image blocks during a scanning block passing through face images, a fast eye location detection scheme based on AdaBoost algorithm combining rectangular feature blocks and triangular feature blocks was proposed. After most of non-eye blocks are excluded through the foregoing strong classifiers, most eye image blocks and a few of non-eye image blocks are detected through the rear parts of the cascade classifier, which can reduce the detection time and boost the detection speed. The experiments further show that the scheme has better detection performance and positive detection rate compared to the case only employed Haar features.

     

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