Partially occluded ear recognition based on local features
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摘要: 通過對人耳受到部分遮擋時識別的研究,提出了一種基于局部特征的部分遮擋人耳識別方法,即首先利用Gabor小波對人耳圖像進行特征提取,由于該特征維數較高,再使用核Fisher判別分析(KFDA)方法進行有效降維后用于人耳識別.在逐步分析人耳各個子區域的鑒別能力的基礎上,提出了基于分塊圖像和概率模型的識別方法.在北京科技大學(USTB)人耳圖像庫上的實驗結果表明:基于Gabor濾波后圖像所提取的特征比基于原始圖像直接提取的特征具有更高的識別率,基于分塊圖像的識別率高于基于整體圖像的識別率.
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關鍵詞:
- 人耳識別 /
- 部分遮擋 /
- GABOR特征 /
- 核FISHER判別分析 /
- 局部特征
Abstract: A local feature based approach was proposed for ear recognition under partial occlusion.Firstly,the Gabor filter is applied for feature extraction.Because the Gabor feature vector is of high dimension,kernel Fisher discriminant analysis(KFDA) is used for dimension reduction as well as class separability enhancement.Based on investigations on the different discriminating ability of sub-regions in ear images,a sub-region and probability based model is proposed for recognition.Experimental results on the USTB ear image database show that ear recognition based on the features extracted from Gabor filtered images performs better than that based on the features extracted from the original images,and the local features based strategy gets a higher recognition rate than the whole image based strategy for recognition. -

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