Hybrid approach to efficient text extraction in complex color images

  • Authors:
  • Keechul Jung;JungHyun Han

  • Affiliations:
  • College of Information Sciences, School of Media, Soongsil University, 1-1, Sangdo-Dong, Seoul 145-743, South Korea;Department of Computer Science and Engineering, Korea University, South Korea

  • Venue:
  • Pattern Recognition Letters
  • Year:
  • 2004

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Abstract

Texture-based methods and connected component (CC) methods have been widely used for text localization. However, these two primary methods have their own strength and weakness. This paper proposes a hybrid approach of the two methods for text localization in complex images. An automatically constructed MLP-based texture classifier can increase the recall rates for complex images with much less user intervention and no explicit feature extraction. The CC-based filtering based on the geometry and shape information enhances the precision rates without affecting overall performance. Then, the time-consuming texture analysis for less relevant pixels is avoided by using CAM Shift. Our experimentation shows that the proposed hybrid approach leads to not only robust but also efficient text localization.