Evaluation of contrast sensitivity functions for the formulation of quality measures incorporated in halftoning algorithms

Author

Mitsa, Theophano ; Varkur, Krishna Lata

Author_Institution

Dept. of Electr. & Comput. Eng., Iowa Univ., Iowa City, IA, USA

Volume

5

fYear

1993

fDate

27-30 April 1993

Firstpage

301

Abstract

A comparative study of different CSFs (contrast sensitivity functions) as to their suitability for the formulation of quality measures in halftoning is presented. The evaluation of the different CSFs is implemented by weighting with each CSF the frequency-domain halftoning error of 44 halftone images, and then comparing the resulting weighted errors with the results of a psychovisual test. Comparison with psychovisual results indicates that the following factors significantly improve the performance of the CSF: incorporation of information about the printing device and the viewing conditions in the quantitative metric; incorporation of information about the angular sensitivity of the visual system: and utilization of a lowpass CSF instead of a bandpass one.<>

Keywords

frequency-domain analysis; function evaluation; image processing; sensitivity analysis; contrast sensitivity functions; formulation of quality measures; halftoning algorithms; performance; psychovisual test; weighted errors;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1993. ICASSP-93., 1993 IEEE International Conference on

Conference_Location

Minneapolis, MN, USA

ISSN

1520-6149

Print_ISBN

0-7803-7402-9

Type

conf

DOI

10.1109/ICASSP.1993.319807

Filename

319807