Correction for the dislocation of curved surfaces caused by the PSF in 2D and 3D CT images

Author

Bouma, Henri ; Vilanova, Anna ; Van Vliet, Lucas J. ; Gerritsen, Frans A.

Author_Institution

Dept. of Biomed. Eng., Eindhoven Univ. of Technol., Netherlands

Volume

27

Issue

9

fYear

2005

Firstpage

1501

Lastpage

1507

Abstract

Conventional edge-detection methods suffer from the dislocation of curved surfaces due to the PSF. We propose a new method that uses the isophote curvature to circumvent this. It is accurate for objects with locally constant curvature, even for small objects (like blood vessels) and in the presence of noise.

Keywords

computerised tomography; deconvolution; edge detection; feature extraction; medical image processing; optical transfer function; computerized tomography image; curved surfaces dislocation; deconvolution; edge-detection method; feature detection; isophote curvature; point spread function; Biomedical imaging; Blood vessels; Computed tomography; Computer vision; Deconvolution; Diseases; Image edge detection; Iterative methods; Laplace equations; Object detection; Index Terms- Edge and feature detection.; Algorithms; Artifacts; Artificial Intelligence; Imaging, Three-Dimensional; Information Storage and Retrieval; Pattern Recognition, Automated; Radiographic Image Enhancement; Radiographic Image Interpretation, Computer-Assisted; Subtraction Technique; Tomography, X-Ray Computed;

fLanguage

English

Journal_Title

Pattern Analysis and Machine Intelligence, IEEE Transactions on

Publisher

ieee

ISSN

0162-8828

Type

jour

DOI

10.1109/TPAMI.2005.174

Filename

1471715