1. Emotion, motivation, and anxiety: brain mechanisms and psychophysiology;Lang;Biol. Psychiatry,1998
2. Aesthetics and emotions in images;Joshi;Signal Process. Mag. IEEE,2011
3. Classification of affective semantics in images based on discrete and dimensional models of emotions;Dellandrea,2010
4. Affective image classification using features inspired by psychology and art theory;Machajdik,2010
5. Exploring principles-of-art features for image emotion recognition;Zhao,2014