Object-oriented approach to the automatic segmentation of bones from pediatric hand radiographs

Hyeonjoon Shim; Brent J. Liu; Ricky K. Taira; Theodore R. Hall M.D.

doi:10.1117/12.274097

25 April 1997 Object-oriented approach to the automatic segmentation of bones from pediatric hand radiographs

Hyeonjoon Shim, Brent J. Liu, Ricky K. Taira, Theodore R. Hall M.D.

Proceedings Volume 3034, Medical Imaging 1997: Image Processing; (1997) https://doi.org/10.1117/12.274097
Event: Medical Imaging 1997, 1997, Newport Beach, CA, United States

Abstract

The purpose of this paper is to develop a robust and accurate method that automatically segments phalangeal and epiphyseal bones from digital pediatric hand radiographs exhibiting various stages of growth. The development of this system draws principles from object-oriented design, model- guided analysis, and feedback control. A system architecture called 'the object segmentation machine' was implemented incorporating these design philosophies. The system is aided by a knowledge base where all model contours and other information such as age, race, and sex, are stored. These models include object structure models, shape models, 1-D wrist profiles, and gray level histogram models. Shape analysis is performed first by using an arc-length orientation transform to break down a given contour into elementary segments and curves. Then an interpretation tree is used as an inference engine to map known model contour segments to data contour segments obtained from the transform. Spatial and anatomical relationships among contour segments work as constraints from shape model. These constraints aid in generating a list of candidate matches. The candidate match with the highest confidence is chosen to be the current intermediate result. Verification of intermediate results are perform by a feedback control loop.

Citation Download Citation

Hyeonjoon Shim, Brent J. Liu, Ricky K. Taira, and Theodore R. Hall M.D. "Object-oriented approach to the automatic segmentation of bones from pediatric hand radiographs", Proc. SPIE 3034, Medical Imaging 1997: Image Processing, (25 April 1997); https://doi.org/10.1117/12.274097

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KEYWORDS

Image segmentation

Data modeling

Bone

Radiography

Feedback control

Binary data

Image processing

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