COMPARATIVE ANALYSIS STUDY OF BINARY IMAGE SMOOTHING TECHNIQUES | ||
| International Conference on Aerospace Sciences and Aviation Technology | ||
| Article 111, Volume 1, A.S.A.T. CONFERENCE 14-16 May 1985 r CAIRO, May 1985, Pages 1365-1374 PDF (2.17 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/asat.1985.26632 | ||
| Author | ||
| AHMED M. EL-SHERBINI | ||
| Assistant Professor, Electronics and Communications Dept., Faculty of Engineering, Cairo University, Giza, EGYPT. | ||
| Abstract | ||
| Image smoothing, or denoising, is a very important pre-processing operation in almost all applications of digital Image processing ranging from enhancement of space-probe pictures to automatic finger print identification. In this paper we present the results of a comparative analysis study of four different smoothing techniques for digitized binary images. The techniques considered are: Majority smoothing, Directional logic smoothing, Majority smoothing with contour checking, and a simple l-D median filter-type smoothing. The first three are two dimensional. Three criteria for judging the performance of the examined techniques are selected, which are: The qualitative effect on the image quality, the processing time, and the effect on the image compression efficiency. The four techniques are implemented and tested on a wide range of test images. A sample of the test images, original and smooth ed, will be presented to illustrate quantitatively the effect of the different methods. The l-D smoothing was found to require the least processing time , while the majority smoothing method was found to have the best effect on the compression efficiency (average increase of 20% ). The study was done using the Wang Professional Image Computer (PIC), which is a microcomputer-based imaging system. | ||
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