GPを用いた顔表情画像の特徴抽出フィルタの最適化

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2012/10/01

タイトル(英語): Optimization of Feature Extraction Filter for Facial Expression Utilizing GP

著者名: 松村　幸輝（鳥取大学大学院工学研究科），神明　慧（鳥取大学大学院工学研究科），木村　周平（鳥取大学大学院工学研究科）

著者名(英語): Koki Matsumura (Graduate school of Engineering, Tottori University), Shatoshi Shinmei (Graduate school of Engineering, Tottori University), Shuhei Kimura (Graduate school of Engineering, Tottori University)

キーワード: 顔表情認識，フィルタの最適化，遺伝的プログラミング，Haar-like 特徴，特徴抽出　　Recognition of Facial Expression，Optimization of Filter，Genetic Programming，Haar-like features，Feature Extraction

要約(英語): This paper proposes a new optimizing system for improved recognition of facial expressions based on a feature extraction filter which uses genetic programming (GP), Haar-like features and neural networks (NN). The purpose of the system is to gather data useful for the recognition of facial expressions using GP and Haar-like features and to evaluate this data's validity. The system employs a technique which converts images of facial expressions into feature images using Haar-like features, then extracts features from these converted images using GP. GP creates individuals using the feature-extracting filter and optimizes them. NN then classifies these facial expressions. The classification rate for the final generation of images was 0.88 for neutral faces, 0.6 for pleasure, 0.6 for sadness, 0.72 for surprise, 0.8 for anger, 0.6 for disgust and 0.44 for fear. The reason for the low classification rate for fear was that high fitness individuals could not be obtained. In addition, the system encountered difficulties in distinguishing images with very similar expressions, such as fear and disgust. On the other hand, compared to the previous system, the processing speed of the new system was markedly quicker. This new approach enables basic experiments to be repeated in a short-term cycle and makes it possible to search for important factors, thus realizing the full potential of the system. A number of practical applications for the system can be expected based on this new approach.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.132 No.10 （2012） 特集：医療関連電子技術のニュートピック

本誌掲載ページ: 1656-1666 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/132/10/132_1656/_article/-char/ja/