DocumentCode
701236
Title
Nonlinear Unsharp Masking for the enhancement of document images
Author
Chiandussi, Stefano ; Ramponi, Giovanni
Author_Institution
D.E.E.I, University of Trieste via A. Valerio, 10, 34127 Trieste, Italy
fYear
1996
fDate
10-13 Sept. 1996
Firstpage
1
Lastpage
4
Abstract
A novel operator for the enhancement of the quality of document images is presented in this paper. This operator, which is a quadratic one, is based on the Unsharp Masking (UM) technique, but it is able to limit noise amplification because every pixel of the processed image depends upon a large portion of the input image; in the same time a good response on details is obtained. A formal description of the operator´s response to noise is also presented.
Keywords
Filtering theory; Image edge detection; Laplace equations; Noise; Polynomials; Reactive power;
fLanguage
English
Publisher
ieee
Conference_Titel
European Signal Processing Conference, 1996. EUSIPCO 1996. 8th
Conference_Location
Trieste, Italy
Print_ISBN
978-888-6179-83-6
Type
conf
Filename
7082961
Link To Document