The study addressed the emotion measurement in affective computing area

and construed the significance of the discrete emotional categories approach and the dimensional approach. The traditional psychological measurement method was used to collect the rating scores of 330 pictures on 16 emotional dimensions proposed by the previous psychological research. The results showed PAD (Pleasure-Arousal-Dominance)dimensions were sufficient and essential to represent the emotional states. The study further proposed the dimensional approach is based on the quantitative analysis

and it is the main approach to solve the computability of emotions. The model of PAD dimensions is essential to promote the affective computing research.