Title
Fully Automatic Segmentation Of The Proximal Femur Using Random Forest Regression Voting
Abstract
Extraction of bone contours from radiographs plays an important role in disease diagnosis, preoperative planning, and treatment analysis. We present a fully automatic method to accurately segment the proximal femur in anteroposterior pelvic radiographs. A number of candidate positions are produced by a global search with a detector. Each is then refined using a statistical shape model together with local detectors for each model point. Both global and local models use Random Forest regression to vote for the optimal positions, leading to robust and accurate results. The performance of the system is evaluated using a set of 839 images of mixed quality. We show that the local search significantly outperforms a range of alternative matching techniques, and that the fully automated system is able to achieve a mean point-to-curve error of less than 0.9 mm for 99% of all 839 images. To the best of our knowledge, this is the most accurate automatic method for segmenting the proximal femur in radiographs yet reported.
Year
DOI
Venue
2013
10.1109/TMI.2013.2258030
IEEE TRANSACTIONS ON MEDICAL IMAGING
Keywords
Field
DocType
Automatic femur segmentation, Constrained Local Models (CLMs), femur detection, Hough transform, Random Forests
Computer vision,Pattern recognition,Segmentation,Regression analysis,Hough transform,Femur,Image segmentation,Feature extraction,Artificial intelligence,Local search (optimization),Random forest,Mathematics
Journal
Volume
Issue
ISSN
32
8
0278-0062
Citations 
PageRank 
References 
12
0.65
0
Authors
6
Name
Order
Citations
PageRank
Claudia Lindner124812.67
Thiagarajah S2302.64
Wilkinson J M3313.38
null null46391656.33
Wallis G A5120.65
Cootes T F6120.65