Deep learning-based face analysis system for monitoring customer interest

In marketing research, one of the most exciting, innovative, and promising trends is quantification of customer interest. This paper presents a deep learning-based system for monitoring customer behavior specifically for detection of interest. The proposed system first measures customer attention through head pose estimation. For those customers whose heads are oriented toward the advertisement or the product of interest, the system further analyzes the facial expressions and reports customers' interest. The proposed system starts by detecting frontal face poses; facial components important for facial expression recognition are then segmented and an iconized face image is generated; finally, facial expressions are analyzed using the confidence values of obtained iconized face image combined with the raw facial images. This approach fuses local part-based features with holistic facial information for robust facial expression recognition. With the proposed processing pipeline, using a basic imaging device, such as a webcam, head pose estimation, and facial expression recognition is possible. The proposed pipeline can be used to monitor emotional response of focus groups to various ideas, pictures, sounds, words, and other stimuli.