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Automatic nuclear cataract grading using image gradients

Publication ,  Journal Article
Srivastava, R; Gao, X; Yin, F; Wong, DWK; Liu, J; Cheung, CY; Wong, TY
Published in: Journal of Medical Imaging
April 1, 2014

This paper deals with automatic grading of nuclear cataract (NC) from slit-lamp images in order to reduce the efforts in traditional manual grading. Existing works on this topic have mostly used brightness and color of the eye lens for the task but not the visibility of lens parts. The main contribution of this paper is in utilizing the visibility cue by proposing gray level image gradient-based features for automatic grading of NC. Gradients are important for the task because in a healthy eye, clear visibility of lens parts leads to distinct edges in the lens region, but these edges fade as severity of cataract increases. Experiments performed on a large dataset of over 5000 slit-lamp images reveal that the proposed features perform better than the state-of-the-art features in terms of both speed and accuracy. Moreover, fusion of the proposed features with the prior ones gives results better than any of the two used alone.

Duke Scholars

Published In

Journal of Medical Imaging

DOI

EISSN

2329-4310

ISSN

2329-4302

Publication Date

April 1, 2014

Volume

1

Issue

1

Related Subject Headings

  • 4003 Biomedical engineering
  • 3202 Clinical sciences
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Srivastava, R., Gao, X., Yin, F., Wong, D. W. K., Liu, J., Cheung, C. Y., & Wong, T. Y. (2014). Automatic nuclear cataract grading using image gradients. Journal of Medical Imaging, 1(1). https://doi.org/10.1117/1.JMI.1.1.014502
Srivastava, R., X. Gao, F. Yin, D. W. K. Wong, J. Liu, C. Y. Cheung, and T. Y. Wong. “Automatic nuclear cataract grading using image gradients.” Journal of Medical Imaging 1, no. 1 (April 1, 2014). https://doi.org/10.1117/1.JMI.1.1.014502.
Srivastava R, Gao X, Yin F, Wong DWK, Liu J, Cheung CY, et al. Automatic nuclear cataract grading using image gradients. Journal of Medical Imaging. 2014 Apr 1;1(1).
Srivastava, R., et al. “Automatic nuclear cataract grading using image gradients.” Journal of Medical Imaging, vol. 1, no. 1, Apr. 2014. Scopus, doi:10.1117/1.JMI.1.1.014502.
Srivastava R, Gao X, Yin F, Wong DWK, Liu J, Cheung CY, Wong TY. Automatic nuclear cataract grading using image gradients. Journal of Medical Imaging. 2014 Apr 1;1(1).

Published In

Journal of Medical Imaging

DOI

EISSN

2329-4310

ISSN

2329-4302

Publication Date

April 1, 2014

Volume

1

Issue

1

Related Subject Headings

  • 4003 Biomedical engineering
  • 3202 Clinical sciences