@inproceedings{80fe9dc70180442491b387f4f329711b,
title = "A heuristic approach to caption enhancement for effective video OCR",
abstract = "We present a heuristic approach to enhancing speech synchronized captions for video OCR, as a pre-process for subsequent tasks of multimedia indexing, segmentation and retrieval. We use a bi-search based caption transition detection method to improve efficiency, which adopts a simple heuristics that the same caption content usually lasts for a period for stable viewing. We propose a combination of color mask, changing mask and region mask to perform caption enhancement based on the discriminative characteristics of captions and backgrounds. Elaborate enhancement on individual characters is further used to remove small background residues. OCR experiments show that our caption enhancement approach brings a high character accuracy of 89.24\%.",
keywords = "Caption enhancement, Caption transition detection, Multimedia retrieval, Video OCR, Video retrieval",
author = "Lei Xie and Xi Tan",
year = "2008",
doi = "10.1007/978-3-540-87442-3\_44",
language = "英语",
isbn = "3540874402",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
pages = "347--355",
booktitle = "Advanced Intelligent Computing Theories and Applications",
note = "4th International Conference on Intelligent Computing, ICIC 2008 ; Conference date: 15-09-2008 Through 18-09-2008",
}