Palmprint Recognition Systems (PRS) with multi-feature can increase the recognition performance of PRS. For such a purpose, effectively distinguished information with low dimension is important in fusion for palmprint recognition. Usually, color information is a beneficial feature in image retrieval. But it is always ignored in recognition. This paper proposes a novel palmprint recognition algorithm based on multi-color components fusion. Firstly, an improved DCT-based approach is used to extract color component features from RGB space, YIQ space and HSI space, respectively. Secondly, the extracted useful component features are fused to serial-fused feature vectors. Then, classification is performed by the nearest neighbor classifier. Experimental results show that the proposed fusion algorithm obtains higher recognition rates compared to single component feature.
Keywords-palmprint discrete cosine transform feature fusion multi-color components
І. INTRODUCTIONWith the rapid development of biometric, palmprint recognition attracts much attention due to its many advantages such as large information and high consumers' acceptability. Current recognition approaches mainly use four types of palmprint information, which are texture information, line information, appearance information and orientation information. In addition, a special kind of information is obtained by fusing two or more types of information mentioned above. From this perspective, the available methods [2][3][4][5][6][7][8][9][10][11][12][13][14][15] for palmprint recognition can be divided into five categories [1] on the basis of the extracted features: Texture-based approaches, e.g., 2D-Gabor filter [2], discrete Fourier transform [3], wavelet transform [4] and radon transform [5], etc; Line-based approaches, e.g., directional line detectors [6], sober operator [7], radon transform[8] and multi-resolution filter [9], etc; Appearance-based approaches, e.g., principle component analysis (PCA) [10], linear discriminate analysis (LDA) [11], locality preserving projection (LPP) [12] and kernel principle component analysis (KPCA) [13], etc; Orientation-based approaches, e.g., Gabor filter [14], etc; Multi-feature based approaches [15]; Different features, such as texture and line [15], can be fused into one single feature vector with feature layer fusion (FLF). FLF methods are divided into four classes: serial fusion, parallel fusion, weight fusion, and kernel based fusion. Serial fusion technique is straightforward, which contains the whole discriminatory information. A system characterized by the serial combination of multiple features can be a good trade-off between verification time, performance and acceptability. Experimental results confirm that proper fusion [15] is a promising approach that may increase the accuracy of systems.Distinguished feature extraction from original palmprint image space is inefficient because that pixel value is high auto-correlation. The principle advantage of discrete cosine transform (DCT) [16] is efficient in removal ...