電気学会論文誌C(電子・情報・システム部門誌)
Online ISSN : 1348-8155
Print ISSN : 0385-4221
<音声画像処理・認識>
カメラで撮影された文字の3次元回転角度推定
蔵元 侃太大山 航若林 哲史木村 文隆
著者情報
ジャーナル 認証あり

2014 年 134 巻 12 号 p. 1817-1823

詳細
抄録

Recently, expectations for camera-based document analysis and recognition have increased by improved performance of digital camera devices. In this paper, we propose a rotation angle estimation method using Gray-Scale Gradient Feature and Modified Quadratic Discriminant Function (MQDF). This method can recognize characters and estimate the rotation angle of those characters rapidly. As the result of the evaluation experiment using printed alphanumeric character, we have confirmed that the low dimensional feature vector is sufficient to estimate the rotation angle of characters. Also, we reduced the number of used eigenvectors of the covariance matrix to calculate the MQDF while keeping estimation accuracy.

著者関連情報
© 2014 電気学会
前の記事 次の記事
feedback
Top