Color text image binarization based on binary texture analysis

Authors:
Bin Wang;Xiang-Feng Li;Feng Liu;Fu-Qiao Hu
Affiliations:
Institute of Image Processing & Pattern Recognition, Huashan Road 1954, Shanghai Jiao Tong University, Shanghai 200030, PR China;Institute of Image Processing & Pattern Recognition, Huashan Road 1954, Shanghai Jiao Tong University, Shanghai 200030, PR China;Institute of Image Processing & Pattern Recognition, Huashan Road 1954, Shanghai Jiao Tong University, Shanghai 200030, PR China;Institute of Image Processing & Pattern Recognition, Huashan Road 1954, Shanghai Jiao Tong University, Shanghai 200030, PR China
Venue:
Pattern Recognition Letters
Year:
2005

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Abstract

In this paper, a novel binarization algorithm for color text images is presented. This algorithm effectively integrates color clustering and binary texture analysis, and is capable of handling situations with complex backgrounds. In this algorithm, dimensionality reduction and graph theoretical clustering are first employed. As the result, binary images related to clusters can be obtained. Binary texture analysis is then performed on each candidate binary image. Two kinds of effective texture features, run-length histogram and spatial-size distribution related respectively, are extracted and explored. Cooperating with an LDA classifier, the optimal candidate of the best binarization effect is obtained. Experiments with images collected from Internet has been carried out and compared with existing techniques, both show the effectiveness of the algorithm.