Title :
A food portion size measurement system for image-based dietary assessment
Author :
Jia, Wenyan ; Zhao, Ruizhen ; Yao, Ning ; Fernstrom, John D. ; Fernstrom, Madelyn H. ; Sclabassi, Robert J. ; Sun, Mingui
Author_Institution :
Dept. of Neurosurg., Univ. of Pittsburgh, Pittsburgh, PA
Abstract :
A novel system consisting of a camera and a light emitting diode (LED) is presented for measuring food portion size. The LED is positioned at a fixed distance besides the camera with its optical axis parallel to the optical axis of the camera. The distance to and oblique angle of the object plane are calculated according to the deformation of the projected spotlight pattern. Experimental results show that satisfactory measurements of food portion size can be obtained with this simple system.
Keywords :
biomedical measurement; cameras; light emitting diodes; camera; deformation; food portion size measurement system; image-based dietary assessment; light emitting diode; optical axis parallel; projected spotlight pattern; Cameras; Cardiac disease; Diabetes; Geometrical optics; Information science; Light emitting diodes; Mathematical model; Size measurement; Solid modeling; Stimulated emission;
Conference_Titel :
Bioengineering Conference, 2009 IEEE 35th Annual Northeast
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-4362-8
Electronic_ISBN :
978-1-4244-4364-2
DOI :
10.1109/NEBC.2009.4967677
