Text Information Extraction algorithms

Author -Year -Approach -Features

• Ohya et al. -1994 -Adaptive thresholding and relaxation operations -Color, scene text (train, signboard,skew and curved), localization and recognition '
• Lee and Kankanhalli -1995 -Coarse search using edge information, followedby connected component (CC) generation -Scene text (cargo container),localization and recognition
• Smith and Kanade -1995 -3×3 filter seeking vertical edges -Caption text, localization
• Zhong et al. -1995 -CC-based method after color reduction, local spatialvariance-based method, and hybrid method -Scene text (CD covers), localization
• Yeo and Liu -1996 -Localization based on large inter-frame difference in MPEG compressed image -Caption text, localization
• Shim et al. -1998 -Gray level difference between pairs of pixels -Caption text, localization
• Jain and Yu -1998 -CC-based method after multi-valued color image decomposition -Color (book cover, Web image, video frame), localization
• Sato et al. -1998 -Smith and Kanade’s localization method and recognition-based character extraction -Recognition
• Chun et al. -1999 -Filtering using neural network after FFT -Caption text, localization
• Antani et al. -1999 -Multiple algorithms in functional parallelism -Scene text, recognition
• Messelodi and Modena -1999 -CC generation, followed by text line selection usingdivisive hierarchical clustering procedure -Scene images (book covers, slanted)localization
• Wu et al. -1999 -Localization based on multi-scale texture segmentation-Video and scene images (newspaper, advertisement) recognition
• Hasan and Karam -2000 -Morphological approach -Scene text, localization
• Li et al. -2000 -Wavelet-based feature extraction and neural networkfor texture analysis -Scene text (slanted), localization, enhancement, and tracking
• Lim et al. -2000 -Text detection and localization using DCT coefficient and macroblock type information -Caption text,MPEG compressed video, localization
• Zhong et al. -2000 -Texture analysis in DCT compressed domain -Caption text, JPEG and I-frames of MPEG, localization
• Jung -2001 -Gabor filter-like multi-layer perceptron for texture analysis -Color, caption text, localization
• Chen et al. -2001 -Text detection in edge-enhanced image -Caption text, localization and recognition
• Strouthopoulos et al. -2002 -Page layout analysis after adaptive color reduction -Color document image, localization