Title :
Evaluation method for modulation transfer function determination of digital image detector
Author :
Chien-Hau Chu;Yen-Chun Chen
Author_Institution :
Health Physics Division, Institute of Nuclear Energy Research, P.O. Box 3-10, Longtan 325, Taiwan (R.O.C.)
Abstract :
This study aimed to establish technology methods to evaluate MTF (modulation transfer function) for digital image system recommended by IEC 62220-1 and the use of a slit. The results showed that the difference was small between the knife edge and slit methods in the image analysis. However, the knife-edge method based on the slit technology is simple, easy to operate, and widely used. This method is used as a fundamental of the next research which calculates noise power spectrum (noise power spectra, NPS), and quantum efficiency (detective quantum efficiency, DQE).
Keywords :
"Modulation","Transfer functions","Image edge detection","Digital images","Radiography","Image quality","Measurement uncertainty"
Conference_Titel :
RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO), 2015 IEEE MTT-S 2015 International Microwave Workshop Series on
DOI :
10.1109/IMWS-BIO.2015.7303862
