An Iterative Thresholding Algorithm for Image Segmentation
IEEE Transactions on Pattern Analysis and Machine Intelligence
A Spatial Thresholding Method for Image Segmentation
IEEE Transactions on Pattern Analysis and Machine Intelligence
Segmentation of Document Images
IEEE Transactions on Pattern Analysis and Machine Intelligence
Automatic text recognition for video indexing
MULTIMEDIA '96 Proceedings of the fourth ACM international conference on Multimedia
Automatic text segmentation and text recognition for video indexing
Multimedia Systems
Automatic Caption Localization in Compressed Video
IEEE Transactions on Pattern Analysis and Machine Intelligence
Texture-Based Text Location for Video Indexing
IDEAL '00 Proceedings of the Second International Conference on Intelligent Data Engineering and Automated Learning, Data Mining, Financial Engineering, and Intelligent Agents
Fast Text Caption Localization on Video Using Visual Rhythm
VISUAL '02 Proceedings of the 5th International Conference on Recent Advances in Visual Information Systems
Text Extraction, Enhancement and OCR in Digital Video
DAS '98 Selected Papers from the Third IAPR Workshop on Document Analysis Systems: Theory and Practice
Text Extraction in Digital News Video Using Morphology
DAS '02 Proceedings of the 5th International Workshop on Document Analysis Systems V
Scene Text Extraction in Complex Images
DAS '02 Proceedings of the 5th International Workshop on Document Analysis Systems V
InfoScope: Link from Real World to Digital Information Space
UbiComp '01 Proceedings of the 3rd international conference on Ubiquitous Computing
Video OCR: indexing digital new libraries by recognition of superimposed captions
Multimedia Systems - Special section on video libraries
Text Detection for Video Analysis
CBAIVL '99 Proceedings of the IEEE Workshop on Content-Based Access of Image and Video Libraries
ICMI '02 Proceedings of the 4th IEEE International Conference on Multimodal Interfaces
An automatic sign recognition and translation system
Proceedings of the 2001 workshop on Perceptive user interfaces
Robust Extraction of Characters from Color Scene Image Using Mathematical Morphology
ICPR '98 Proceedings of the 14th International Conference on Pattern Recognition-Volume 2 - Volume 2
Character Grouping Technique Using 3-D Neighborhood Graphs in Raster Map
ICPR '98 Proceedings of the 14th International Conference on Pattern Recognition-Volume 2 - Volume 2
Character Recognition in Bookshelf Images by Automatic Template Selection
ICPR '98 Proceedings of the 14th International Conference on Pattern Recognition-Volume 2 - Volume 2
Towards automatic sign translation
HLT '01 Proceedings of the first international conference on Human language technology research
Text Locating from Natural Scene Images Using Image Intensitie
ICDAR '05 Proceedings of the Eighth International Conference on Document Analysis and Recognition
ICDAR '05 Proceedings of the Eighth International Conference on Document Analysis and Recognition
An embedded application for degraded text recognition
EURASIP Journal on Applied Signal Processing
A multi-plane approach for text segmentation of complex document images
Pattern Recognition
Robust character region extraction against camera motion and illumination variation
CIMMACS'08 Proceedings of the 7th WSEAS international conference on Computational intelligence, man-machine systems and cybernetics
Automatic segmentation of natural scene images based on chromatic and achromatic components
MIRAGE'07 Proceedings of the 3rd international conference on Computer vision/computer graphics collaboration techniques
An efficient method for text detection in video based on stroke width similarity
ACCV'07 Proceedings of the 8th Asian conference on Computer vision - Volume Part I
Text region extraction from quality degraded document images
PReMI'07 Proceedings of the 2nd international conference on Pattern recognition and machine intelligence
A new pivoting and iterative text detection algorithm for biomedical images
Journal of Biomedical Informatics
Character region identification from cover images using DTT
ICADL'04 Proceedings of the 7th international Conference on Digital Libraries: international collaboration and cross-fertilization
Adaptive local binarization method for recognition of vehicle license plates
IWCIA'04 Proceedings of the 10th international conference on Combinatorial Image Analysis
Detection of text region and segmentation from natural scene images
ISVC'05 Proceedings of the First international conference on Advances in Visual Computing
Digital instrumentation calibration using computer vision
ICIAR'10 Proceedings of the 7th international conference on Image Analysis and Recognition - Volume Part II
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An effective algorithm for character recognition in scene images is studied. Scene images are segmented into regions by an image segmentation method based on adaptive thresholding. Character candidate regions are detected by observing gray-level differences between adjacent regions. To ensure extraction of multisegment characters as well as single-segment characters, character pattern candidates are obtained by associating the detected regions according to their positions and gray levels. A character recognition process selects patterns with high similarities by calculating the similarities between character pattern candidates and the standard patterns in a dictionary and then comparing the similarities to the thresholds. A relaxational approach to determine character patterns updates the similarities by evaluating the interactions between categories of patterns, and finally character patterns and their recognition results are obtained. Highly promising experimental results have been obtained using the method on 100 images involving characters of different sizes and formats under uncontrolled lighting.