DocumentCode :
329497
Title :
Fractal enhancement of decompressed images
Author :
Wakefield, P.D. ; Monro, D.M.
Author_Institution :
Sch. of Electron. & Electr. Eng., Bath Univ., UK
Volume :
1
fYear :
1998
fDate :
4-7 Oct 1998
Firstpage :
406
Abstract :
Fractal image compression successfully uses self-similarity within an image to achieve compression. By adapting fractal image compression techniques to image enhancement, an innovative new fractal technique for visual enhancement of JPEG compressed images is created. After detecting the self-similarity characteristics of a degraded JPEG image, details spoiled by quantization are enhanced using an iterative scheme and the fractal nature of the method allows resolution enhancement and fractal zooming. The effect of the scheme is an increase in the visual quality of edges in the image for almost all areas and sharper edges when the image resolution is increased. This application of fractal theory to the problem of image enhancement reveals a number of interesting avenues of investigation and promises techniques which can be used in combination with conventional methods, exploiting both self-similarity and statistical properties to achieve enhancement
Keywords :
data compression; decoding; fractals; image coding; image enhancement; image resolution; iterative methods; quantisation (signal); statistical analysis; JPEG compressed images; decompressed images; fractal enhancement; fractal image compression; fractal theory; fractal zooming; image edges; image enhancement; image resolution; iterative scheme; quantization; resolution enhancement; self-similarity; self-similarity characteristics; statistical properties; visual quality; Degradation; Fractals; Frequency; Image coding; Image enhancement; Image resolution; Internet; Quantization; Switches; Transform coding;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Image Processing, 1998. ICIP 98. Proceedings. 1998 International Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
0-8186-8821-1
Type :
conf
DOI :
10.1109/ICIP.1998.723512
Filename :
723512
Link To Document :
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