The area of dietary assessment is becoming increasingly important as obesity rates soar, but valid measurement of the
food intake in free-living persons is extraordinarily challenging. Traditional paper-based dietary assessment methods
have limitations due to bias, user burden and cost, and therefore improved methods are needed to address important
hypotheses related to diet and health. In this paper, we will describe the progress of our mobile Diet Data Recorder
System (DDRS), where an electronic device is used for objective measurement on dietary intake in real time and at
moderate cost. The DDRS consists of (1) a mobile device that integrates a smartphone and an integrated laser package,
(2) software on the smartphone for data collection and laser control, (3) an algorithm to process acquired data for food
volume estimation, which is the largest source of error in calculating dietary intake, and (4) database and interface for
data storage and management. The estimated food volume, together with direct entries of food questionnaires and voice
recordings, could provide dietitians and nutritional epidemiologists with more complete food description and more
accurate food portion sizes. In this paper, we will describe the system design of DDRS and initial results of dietary
assessment.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Junqing Shang ; Eric Pepin ; Eric Johnson ; David Hazel ; Ankur Teredesai, et al.
"Dietary intake assessment using integrated sensors and software", Proc. SPIE 8304, Multimedia on Mobile Devices 2012; and Multimedia Content Access: Algorithms and Systems VI, 830403 (February 1, 2012); doi:10.1117/12.907769; http://dx.doi.org/10.1117/12.907769