Abstract
Unsharp masking is an image enhancement technique used to obtain a Modulation Transfer Function (MTF) greater than unity within a given spatial frequency band. In unsharp masking, the mask forms a slightly blurred version of the original image. The result is more severe in the high frequency region than at low frequencies. The final image is made by combining the original positive and the blurred negative images. The subjective quality of images resulting from unsharp masking is a function of the frequency response of the human eye. This study evaluates the unsharp masking technique by implementing the Subjective Quality Factor (SQF) criterion.
Library of Congress Subject Headings
Images, Photographic; Photography--Masking
Publication Date
1982
Document Type
Thesis
Department, Program, or Center
School of Photographic Arts and Sciences (CIAS)
Advisor
Granger, E.
Advisor/Committee Member
Easton, Roger
Advisor/Committee Member
Pelz, Jeff
Recommended Citation
Liu, Chia-Chin, "Image quality as a function of unsharp masking band center" (1982). Thesis. Rochester Institute of Technology. Accessed from
https://repository.rit.edu/theses/304
Campus
RIT – Main Campus
Comments
Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works. Physical copy available through RIT's The Wallace Library at: TR222 .L583 1988