Title :
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
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;
Journal_Title :
Pattern Analysis and Machine Intelligence, IEEE Transactions on
DOI :
10.1109/TPAMI.2005.174
