Statistical Edge Detection in CT Image by Kernel Density Estimation and Mean Square Error Distance

Xu XU
Yi CUI
Shuxu GUO

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E96-D    No.5    pp.1162-1170
Publication Date: 2013/05/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E96.D.1162
Print ISSN: 0916-8532
Type of Manuscript: PAPER
Category: Image Processing and Video Processing
Keyword: 
edge detection,  CT image,  two-sample test statistic,  kernel estimation,  mean square error distance,  

Full Text: PDF(1.6MB)>>
Buy this Article


Summary: 
In this paper, we develop a novel two-sample test statistic for edge detection in CT image. This test statistic involves the non-parametric estimate of the samples' probability density functions (PDF's) based on the kernel density estimator and the calculation of the mean square error (MSE) distance of the estimated PDF's. In order to extract single-pixel-wide edges, a generic detection scheme cooperated with the non-maximum suppression is also proposed. This new method is applied to a variety of noisy images, and the performance is quantitatively evaluated with edge strength images. The experiments show that the proposed method provides a more effective and robust way of detecting edges in CT image compared with other existing methods.

open access publishing via