Document Detail


3D localization of circular feature in 2D image and application to food volume estimation.
MedLine Citation:
PMID:  23366939     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A novel method to estimate the 3D location of a circular feature from a 2D image is presented and applied to the problem of objective dietary assessment from images taken by a wearable device. Instead of using a common reference (e.g., a checkerboard card), we use a food container (e.g., a circular plate) as a necessary reference before the volumetric measurement. In this paper, we establish a mathematical model formulating the system involving a camera and a circular object in a 3D space and, based on this model, the food volume is calculated. Our experiments showed that, for 240 pictures of a variety of regular objects and food replicas, the relative error of the image-based volume estimation was less than 10% in 224 pictures.
Authors:
Wenyan Jia; Yaofeng Yue; John D Fernstrom; Zhengnan Zhang; Yongquan Yang; Mingui Sun
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference     Volume:  2012     ISSN:  1557-170X     ISO Abbreviation:  Conf Proc IEEE Eng Med Biol Soc     Publication Date:  2012  
Date Detail:
Created Date:  2013-01-31     Completed Date:  2013-07-22     Revised Date:  2013-07-24    
Medline Journal Info:
Nlm Unique ID:  101243413     Medline TA:  Conf Proc IEEE Eng Med Biol Soc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  4545-8     Citation Subset:  IM    
Affiliation:
Department of Neurosurgery, University of Pittsburgh, PA 15260, USA.
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MeSH Terms
Descriptor/Qualifier:
Eating / physiology*
Food Analysis / instrumentation*
Humans
Imaging, Three-Dimensional / methods*
Monitoring, Ambulatory / methods*
Pattern Recognition, Automated / methods*
Photography / methods*
Grant Support
ID/Acronym/Agency:
U01 HL091736/HL/NHLBI NIH HHS; U01 HL91736/HL/NHLBI NIH HHS
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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