@article{oai:u-ryukyu.repo.nii.ac.jp:02001618,
 author = {長嶺, 銀河 and 山城, 毅 and 安冨祖, 忠信 and Nagamine, Ginga and Yamashiro, Tsuyoshi and Afuso, Chushin},
 issue = {54},
 journal = {琉球大学工学部紀要},
 month = {Sep},
 note = {There are various ways to binarize images automatically. Our study is how to binarize character images which were taken under bad lighting conditions with CCD camera. We propose a linear equation for threshold and the adaptive image segmentation. The dynamic thresholding by this method makes these shading images well binarized in quality., 紀要論文},
 pages = {67--72},
 title = {ＣＣＤカメラで取り込んだ文字画像の二値化に関する研究},
 year = {1997}
}