Automated detection of BB pixel clusters in digital fluoroscopic images.

Phys Med Biol

Department of Radiation Oncology, University of Washington, Seattle 98195-6043, USA.

Published: September 1998

Small ball bearings (BBs) are often used to characterize and correct for geometric distortion of x-ray image intensifiers. For quantitative applications the number of BBs required for accurate distortion correction is prohibitively large for manual detection. A method to automatically determine the BB coordinates is described. The technique consists of image segmentation, pixel coalescing and centroid calculation. The dependence of calculated BB coordinates on segmentation threshold was also evaluated and found to be within the uncertainty of measurement.

Download full-text PDF

Source
http://dx.doi.org/10.1088/0031-9155/43/9/018DOI Listing

Publication Analysis

Top Keywords

automated detection
4
detection pixel
4
pixel clusters
4
clusters digital
4
digital fluoroscopic
4
fluoroscopic images
4
images small
4
small ball
4
ball bearings
4
bearings bbs
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!