Optoelectronics Letters, Volume. 13, Issue 6, 457(2017)
Text extraction method for historical Tibetan document images based on block projections
Text extraction is an important initial step in digitizing the historical documents. In this paper, we present a text extraction method for historical Tibetan document images based on block projections. The task of text extraction is considered as text area detection and location problem. The images are divided equally into blocks and the blocks are filtered by the information of the categories of connected components and corner point density. By analyzing the filtered blocks’ projections, the approximate text areas can be located, and the text regions are extracted. Experiments on the dataset of historical Tibetan documents demonstrate the effectiveness of the proposed method.
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DUAN Li-juan, ZHANG Xi-qun, MA Long-long, WU Jian. Text extraction method for historical Tibetan document images based on block projections[J]. Optoelectronics Letters, 2017, 13(6): 457
Received: Aug. 30, 2017
Accepted: Sep. 18, 2017
Published Online: Sep. 13, 2018
The Author Email: Li-juan DUAN (ljduan@bjut.edu.cn)