A Study on Segmentation Method for Gray Document Image
Yan Chen · Zhongwen xinxi xuebao · 2004
In order to overcome the weakness of conventional segmentation algorithm in OCR, this paper presents a new segmentation method for gray document image. Important features of the new method include grading of the grayscale of pixels in image and construction of a tree structures for the whole document image. By dividing this trees branches and leaves, characters, pictures and forms can be correctly segmented. The experiment results showed that this method is very effective for document with both Chinese and English characters or document with different backgrounds.