Feature extraction in carpal-bone analysis.

Abstract:

:Hand-bone analysis with image processing techniques using a digital radiograph can be used to assess skeletal age. The analysis consists of two steps: phalangeal and carpal bone analysis. The carpal bone analysis is discussed. First, the carpal bone region of interest (CROI) is defined using a standard thresholding technique to separate the hand from the background. Then, a dynamic thresholding method with variable window sizes is used to differentiate between the bones and the soft tissue. Next, the radius, ulna, and metacarpals intersecting the borders of the CROI are removed by using mathematical morphology. Finally, all objects included in the corrected CROI are separated and described in terms of features. These features describe the size, shape, and location and include some gray-scale pixel value information. On the basis of this analysis, the separation of the noncarpal bone objects from the carpal bone is possible. The feature selection step removes features of low discriminant power and reduces the space dimension. The remaining carpal bone parameters are used for further analysis leading to skeletal age assessment.

journal_name

IEEE Trans Med Imaging

authors

Pietka E,Kaabi L,Kuo ML,Huang HK

doi

10.1109/42.222665

subject

Has Abstract

pub_date

1993-01-01 00:00:00

pages

44-9

issue

1

eissn

0278-0062

issn

1558-254X

journal_volume

12

pub_type

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