The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title:	Blur identification and restoration of images of coronary microvessel
Author:	Wong, Kuen Tak
View Online:	njit-etd1993-161 (viii, 63 pages ~ 2.8 MB pdf)
Department:	Biomedical Engineering Committee
Degree:	Master of Science
Program:	Biomedical Engineering
Document Type:	Thesis
Advisory Committee:	Ritter, Arthur B. (Committee co-chair) Shi, Yun Q. (Committee co-chair) Kristol, David S. (Committee member)
Date:	1993-05
Keywords:	Imaging systems in medicine Coronary circulation Image processing -- Digital techniques Microcirculation
Availability:	Unrestricted
Abstract:	The objective of this research was to identify the blur characteristics of the blurred images of the rat coronary microvessel, and the information of the blur characteristics was used to restore the blurred images. The blur characteristics were analyzed by using the image power cepstrum. The Wiener filter was implemented to restore the images. There were two types of point spread functions proposed and studied for the restoration. They were: defocus blur PSF and motion blur PSF. The images were transferred from HP A900 system to an AVS workstation. The images were processed and manipulated by the AVS, and showed significant improvement in quality. Blur characteristics which were similar to the motion blur were found in all the images. The motion blur PSF did not show much effectiveness in the restoration process. No defocus blur or motion blur characteristics appeared on the cepstrum of the microvessel images, suggesting that the strobe technique was capable of acquiring stationary coronary microvessel images.