Single-View Food Portion Estimation Based on Geometric Models.
In this paper we present a food portion estimation technique based on a single-view food image used for the estimation of the amount of energy (in kilocalories) consumed at a meal. Unlike previous methods we have developed, the new technique is capable of estimating food portion without manual tuning of parameters. Although single-view 3D scene reconstruction is in general an ill-posed problem, the use of geometric models such as the shape of a container can help to partially recover 3D parameters of food items in the scene. Based on the estimated 3D parameters of each food item and a reference object in the scene, the volume of each food item in the image can be determined. The weight of each food can then be estimated using the density of the food item. We were able to achieve an error of less than 6% for energy estimation of an image of a meal assuming accurate segmentation and food classification.
Video and Image Processing Laboratory, School of Electrical and Computer Engineering, Purdue University, West Lafayette, U.S.A.
Shaobo
S
Fang
Video and Image Processing Laboratory, School of Electrical and Computer Engineering, Purdue University, West Lafayette, U.S.A.
Chang
C
Liu
Video and Image Processing Laboratory, School of Electrical and Computer Engineering, Purdue University, West Lafayette, U.S.A.
Fengqing
F
Zhu
Video and Image Processing Laboratory, School of Electrical and Computer Engineering, Purdue University, West Lafayette, U.S.A.
Edward J
EJ
Delp
Cancer Epidemiology Program, University of Hawaii Cancer, Center Honolulu, U.S.A.
Carol J
CJ
Boushey
3D Reconstruction; Dietary Assessment; Food Portion Estimation; Geometric Model
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