DocumentCode
284891
Title
Improved definition image expansion
Author
Schultz, Richard R. ; Stevenson, Robert L.
Author_Institution
Dept. of Electr. Eng., Notre Dame Univ., IN, USA
Volume
3
fYear
1992
fDate
23-26 Mar 1992
Firstpage
173
Abstract
A method for nonlinear image expansion is introduced. The method preserves the discontinuities of the original image, therefore producing an expanded image with improved definition. The maximum a posteriori (MAP) estimation technique that is proposed results in the constrained optimization of a convex functional. The expanded image produced from this method will be shown to be aesthetically and quantitatively superior to images expanded by the standard methods of replication, linear interpolation, and cubic B-spline expansion
Keywords
image processing; MAP estimation; constrained optimization; convex functional; improved definition image expansion; maximum a posteriori estimation; nonlinear image expansion; Additive noise; Constraint optimization; Equations; Face; Gaussian noise; Image edge detection; Laboratories; Pixel; Signal analysis; Spline;
fLanguage
English
Publisher
ieee
Conference_Titel
Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on
Conference_Location
San Francisco, CA
ISSN
1520-6149
Print_ISBN
0-7803-0532-9
Type
conf
DOI
10.1109/ICASSP.1992.226248
Filename
226248
Link To Document