报告题目：The challenge of Chinese food recognition

报告人：Professor Chong-Wah Ngo（杨宗桦教授），香港城市大学

时间：2016年7月28日（周四）下午3:00-4:30

地点：北京大学计算机科学技术研究所1层106会议室

Abstract: In multimedia, food recognition is regarded as a difficult problem due to diverse appearance of food in shape and color because of different cooking and cutting methods. As a result, while there is a large number of cooking recipes posted on the Internet, finding a right recipe for a food picture remains a challenge. The problem is also shared among health-related applications. For example, food-log management, which records dairy food intake, often requires manual input of food/ingredients for nutrition estimation. This talk will share with you the challenge of recognizing ingredients, in Chinese food particularly, for recipe retrieval. Recognizing Chinese food is challenging due to non-standardized cooking methods, diverse appearances of dishes and wild composition of ingredients. I will present a multi-task deep CNN architecture that explores the mutual but fuzzy relationship between food and ingredients for simultaneous learning/recognition. The learnt deep features are used for cross-modal retrieval of food and recipes.

Biography: Chong-Wah Ngo is a professor in the Dept. of Computer Science at the City University of Hong Kong. He received his PhD in Computer Science from Hong Kong University of Science & Technology, and MSc and BSc, both in Computer Engineering, from Nanyang Technological University of Singapore. Before joining City University of Hong Kong, he was a postdoctoral scholar in Beckman Institute at the University of Illinois in Urbana‐Champaign. He was also a visiting researcher of Microsoft Research Asia in year 2002 and a student intern in media computing group in 1999.

His main research interests include large‐scale multimedia information retrieval, video computing, multimedia mining and visualization. He is the founding leader of video retrieval group (VIREO) at City University, a research team that releases open source softwares, tools and datasets widely used in the multimedia community. He was the associate editor of IEEE Trans. on Multimedia, and has served as guest editor of IEEE MultiMedia, Multimedia Systems, and Multimedia Tools and Applications. Chong-Wah has organized and served as program committee member of numerous international conferences in the area of multimedia. He is on the steering committee of TRECVid and ICMR (Int. Conf. on Multimedia Retrieval). He was conference co-chair of ICMR 2015, program co-chairs of ICMR 2012, MMM 2012 and PCM 2013. He also served as the chairman of ACM (Hong Kong Chapter) during 2008-2009.