A Novel Mobile App for Personalized Dietary Advice Leveraging Persuasive Technology, Computer Vision, and Cloud Computing: Development and Usability Study oleh Vivienne Guan, Chenghuai Zhou, Hengyi Wan, Rengui Zhou, Dongfa Zhang, Sihan Zhang, Wangli Yang, Bhanu Prakash Voutharoja, Lei Wang, Khin Than Win, Peng Wang