Video OCR: indexing digital new libraries by recognition of superimposed captions
Multimedia Systems - Special section on video libraries
ICMI '02 Proceedings of the 4th IEEE International Conference on Multimodal Interfaces
Photo time-stamp detection and recognition
ICDAR '03 Proceedings of the Seventh International Conference on Document Analysis and Recognition - Volume 1
Caption Text Recognition in Video Frames by MAP Matching
ICDAR '03 Proceedings of the Seventh International Conference on Document Analysis and Recognition - Volume 2
An automatic sign recognition and translation system
Proceedings of the 2001 workshop on Perceptive user interfaces
Text detection, localization, and tracking in compressed video
Image Communication
DAS '10 Proceedings of the 9th IAPR International Workshop on Document Analysis Systems
A discontinuity adaptive method for super-resolution of license plates
ICVGIP'06 Proceedings of the 5th Indian conference on Computer Vision, Graphics and Image Processing
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In this paper, we present a new approach to extract characters on a license plate of a moving vehicle given a sequence of perspective distortion corrected license plate images. We model the extraction of characters as a Markov random field (MRF). With the MRF modeling, the extraction of characters is formulated as the problem of maximizing the a posteriori probability based on given prior and observations. A genetic algorithm with local greedy mutation operator is employed to optimize the objective function. Experiments and comparison study were conducted. It is shown that our approach provides better performance than other single frame methods.