@article{ART001176297},
author={장대근 and Byung-Tae Chun},
title={A Method for Thresholding and Correction of Skew in Camera Document Images},
journal={Journal of The Korea Society of Computer and Information},
issn={1598-849X},
year={2005},
volume={10},
number={3},
pages={143-150}
TY - JOUR
AU - 장대근
AU - Byung-Tae Chun
TI - A Method for Thresholding and Correction of Skew in Camera Document Images
JO - Journal of The Korea Society of Computer and Information
PY - 2005
VL - 10
IS - 3
PB - The Korean Society Of Computer And Information
SP - 143
EP - 150
SN - 1598-849X
AB - Camera image is very sensitive to illumination that result in difficulties for recognizing character. Also Camera captured document images have not only skew but also vignetting effect and geometric distortion. Vignetting effect make it difficult to separate characters from the document images. Geometric distortion, occurred by the mismatch of angle and center position between the document image and the camera, make the shape of characters to be distorted, so that the character recognition is more difficult than the case of using scanner. In this paper, we propose a method that can increase the performance of character recognition by correcting the geometric distortion of document images using a linear approximation which changes the quadrilateral region to the rectangle one. The proposed method also determine the quadrilateral transform region automatically, using the alignment of character lines and the skewed angles of characters located in the edges of each character line. Proposed method, therefore, can correct the geometric distortion without getting positional information from camera.
KW - camera document image;correction of skew
DO -
UR -
ER -
장대근 and Byung-Tae Chun. (2005). A Method for Thresholding and Correction of Skew in Camera Document Images. Journal of The Korea Society of Computer and Information, 10(3), 143-150.
장대근 and Byung-Tae Chun. 2005, "A Method for Thresholding and Correction of Skew in Camera Document Images", Journal of The Korea Society of Computer and Information, vol.10, no.3 pp.143-150.
장대근, Byung-Tae Chun "A Method for Thresholding and Correction of Skew in Camera Document Images" Journal of The Korea Society of Computer and Information 10.3 pp.143-150 (2005) : 143.
장대근, Byung-Tae Chun. A Method for Thresholding and Correction of Skew in Camera Document Images. 2005; 10(3), 143-150.
장대근 and Byung-Tae Chun. "A Method for Thresholding and Correction of Skew in Camera Document Images" Journal of The Korea Society of Computer and Information 10, no.3 (2005) : 143-150.
장대근; Byung-Tae Chun. A Method for Thresholding and Correction of Skew in Camera Document Images. Journal of The Korea Society of Computer and Information, 10(3), 143-150.
장대근; Byung-Tae Chun. A Method for Thresholding and Correction of Skew in Camera Document Images. Journal of The Korea Society of Computer and Information. 2005; 10(3) 143-150.
장대근, Byung-Tae Chun. A Method for Thresholding and Correction of Skew in Camera Document Images. 2005; 10(3), 143-150.
장대근 and Byung-Tae Chun. "A Method for Thresholding and Correction of Skew in Camera Document Images" Journal of The Korea Society of Computer and Information 10, no.3 (2005) : 143-150.
