Fast text location based on discrete wavelet transform |
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Authors: | Xiaohua Li Lansun Shen |
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Affiliation: | Signal & Information Processing Lab., Beijing University of Technology, Beijing 100022, China |
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Abstract: | The paper describes a texture-based fast text location scheme which operates directly in the Discrete Wavelet Transform (DWT) domain. By the distinguishing texture characteristics encoded in wavelet transform domain, the text is fast detected from complex background images stored in the compressed format such as JPEG2000 without full decompress. Compared with some traditional character location methods, the proposed scheme has the advantages of low computational cost, robust to size and font of characters and high accuracy. Preliminary experimental results show that the proposed scheme is efficient and effective. |
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Keywords: | Text location Discrete Wavelet Transform (DWT) Semantic content Texture analysis Image/video indexing |
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