Toward precise pulmonary nodule descriptors for nodule type classification

Authors:
Amal Farag;Shireen Elhabian;James Graham;Aly Farag;Robert Falk
Affiliations:
Department of Electrical and Computer Engineering, University of Louisville;Department of Electrical and Computer Engineering, University of Louisville;Department of Electrical and Computer Engineering, University of Louisville;Department of Electrical and Computer Engineering, University of Louisville;Medical Imaging Division, Jewish Hospital, Louisville, KY
Venue:
MICCAI'10 Proceedings of the 13th international conference on Medical image computing and computer-assisted intervention: Part III
Year:
2010

Citing 1
Cited 1

Distinctive Image Features from Scale-Invariant Keypoints

International Journal of Computer Vision

Feature-based lung nodule classification

ISVC'10 Proceedings of the 6th international conference on Advances in visual computing - Volume Part III

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Abstract

A framework for nodule feature-based extraction is presented to classify lung nodules in low-dose CT slices (LDCT) into four categories: juxta, well-circumscribed, vascularized and pleural-tail, based on the extracted information. The Scale Invariant Feature Transform (SIFT) and an adaptation to Daugman's Iris Recognition algorithm are used for analysis. The SIFT descriptor results are projected to lower-dimensional subspaces using PCA and LDA. Complex Gabor wavelet nodule response obtained from an adopted Daugman Iris Recognition algorithm revealed improvements from the original Daugman binary iris code. This showed that binarized nodule responses (codes) are inadequate for classification since nodules lack texture concentration as seen in the iris, while the SIFT algorithm projected using PCA showed robustness and precision in classification.