منابع مشابه
Fractal image compression
The top-selling multimedia encyclopedia Encarta, published by Microsoft Corporation, includes on one CD-ROM seven thousand color photographs which may be viewed interactively on a computer screen. The images are diverse; they are of buildings, musical instruments, people’s faces, baseball bats, ferns, etc. What most users do not know is that all of these photographs are based on fractals and th...
متن کاملFractal Image Compression
Standard graphics systems encode pictures by assigning an address and colour attribute for each point of the object resulting in a long list of addresses and attributes. Fractal geometry enables a newer class of geometrical shapes to be used to encode whole objects, thus image compression is achieved. Compression ratios of 10,000:1 have been claimed by researchers in this field. The fractal equ...
متن کاملFractal Image Coding
This paper investigates the use of fractal coding for image compression and reconstruction. The encoder exploits self-similarity of the image at different resolutions, mapping larger blocks of the image to similar smaller blocks through a series of contractive transformations. The decoder can apply these transformations iteratively to any image, and recover the original. We show that varying th...
متن کاملVq - Enhanced Fractal Image
A novel hybrid scheme combining fractal image compression with mean-removed shape-gain vector quantization is presented. The scheme uses a small set of VQ codebook blocks as a block classiier for the domain blocks and as an alternative means of coding when able to provide a satisfying distortion. Our scheme is shown to improve the performance of conventional fractal coding in all its aspects. T...
متن کاملFractal Image Compression
The first fully automated fractal image compression algorithm was published by Arnaud Jacquin in 1989. Given an image f , the encoder finds a contractive affine image transformation (fractal transform) T such that the fixed point of T is close to f . The decoding is by iteration of the fractal transform starting from an arbitrary image. Due to the contraction mapping principle, the sequence of ...
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ژورنال
عنوان ژورنال: The Journal of the Institute of Television Engineers of Japan
سال: 1991
ISSN: 0386-6831,1884-9652
DOI: 10.3169/itej1978.45.698