Restoring Warped Document Image Based on Text Line Correction
學年 101
學期 2
發表日期 2013-06-18
作品名稱 Restoring Warped Document Image Based on Text Line Correction
作品名稱（其他語言）
著者 Hsieh, Ching-Tang; Lee, Sheng-Chao; Yeh, Cheng-Hsiang
作品所屬單位 淡江大學電機工程學系
出版者 AICIT, Korea(Rep. of)
會議名稱 Research Notes in Information Science (RNIS)
會議地點 Jeju Island, Republic of Korea
摘要 Document images captured by camera often suffer from warping and distortions because of the bounded volumes and complex environment light source. These effects not only reduce the document readability but also the OCR recognition performance. In this paper, we propose a method to combine non-linear and linear compensation for correcting distortions of document images. First, due to the broken text result of Otsu binarization, an image preprocessing is used to remove the effect of background light. Second, the dewarping method using the cubic polynomial fitting equation is proposed to find out the optimal approximate text line for vertical direction rectification. Finally, we use linear compensation for horizontal direction rectification. Experimental results demonstrate the robustness of the proposed methodology and improve the accuracy rate of OCR recognition.
關鍵字 Document image;Warping;Morphology;Text line
語言 en
收錄於
會議性質 國際
校內研討會地點
研討會時間 20130618~20130620
通訊作者 Ching-Tang Hsieh
國別 KOR
公開徵稿 Y
出版型式 紙本
出處 Research Notes in Information Science (RNIS), pp.459-464
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