Fractal compression of satellite images |
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| Authors: | Jayanta Kumar Ghosh Ankur Singh |
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| Institution: | 1. Geomatics Engineering Group, Civil Engineering Department, Indian Institute of Technology Roorkee, Uttarakhand, 247667, India
2. SAP Labs India Ltd., RMZ NXT, 2B/2C, Sonnenahalli Village, Mahadevapura, East Taluk, Bangalore, 560066, India
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| Abstract: | Fractal geometry provides a means for describing and analysing the complexity of various features present in digital images. In this paper, characteristics of Fractal based compression of satellite data have been tested for Indian Remote Sensing (IRS) images (of different bands and resolution). The fidelity and efficiency of the algorithm and its relationship with spatial complexity of images is also evaluated. Results obtained from fractal compression have been compared with popularly used compression methods such as JPEG 2000, WinRar. The effect of bands and pixel resolution on the compression rate has also been examined. The results from this study show that the fractal based compression method provides higher compression rate while maintaining the information content of RS images to a great extent than that of JPEG. This paper also asserts that information loss due to fractal compression is minimal. It may be concluded that fractal technique has many potential advantages for compression of satellite images. |
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