| 000 | 03585ntm a2200277 a 4500 | ||
|---|---|---|---|
| 001 | vtls000101365 | ||
| 003 | KUKTEM | ||
| 005 | 20251117113341.0 | ||
| 008 | 170928t2017 my a f am 000 0 eng d | ||
| 020 | _aTHE0001253(Local) | ||
| 039 | 9 |
_a201905271348 _batie _c201710030929 _dfateeha _y201709281139 _zfateeha |
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| 040 | _aUMP | ||
| 090 | _aFSKKP .S26 2017 r Thesis | ||
| 100 | 1 | _aSantoso, Ardhi Wicaksono | |
| 245 | 1 | 0 |
_aFuzzy-based frost filter for speckle noise reduction of Synthetic Aperture Radar (SAR) image / _cArdhi Wicaksono Santoso |
| 260 |
_aKuantan, Pahang : _bUMP, _c2017 |
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| 300 |
_axiv, 117 p. : _bill. (some col.) ; _c30 cm. + _e1 CD-ROM |
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| 500 | _aFaculty of Computer Systems & Software Engineering | ||
| 502 | _aThesis (Master of Science) -- Universiti Malaysia Pahang – 2017 | ||
| 504 | _aBibliography : p. 100-104 | ||
| 520 | 3 | _aThe Synthetic Aperture Radar (SAR) image is a high-resolution image and is less influenced by weather conditions either day or night compared to the optical image. SAR image, because of its advantages, is becoming more popular than the optical image in the remote sensing area for earth observation study. However, the speckle noise that occurs in the SAR image causes difficulties in image interpretation, and speckle noise reduction process has become necessary before of the usage of SAR image. The ideal speckle filter has the capability of reducing speckle noise without losing the information and preserving its texture. This study proposes the use of speckle noise filter that as nearly possible to meet those criteria. This research has investigated the performance of existing filter, which was Frost, Lee, Kuan, and Median, and had applied it to ALOS-PALSAR images with homogeneous and heterogeneous earth area surfaces in Kuantan, Pahang, Malaysia. Filtered image is measured and evaluated using image quality parameters to show the performance of the filters in reducing speckle noise and preserving the texture. The parameter used for filters evaluation performances are Equivalent Number of Looks (ENL), Speckle Index (SI), Mean, Standard Deviation and Variance. The experiment results showed that Frost filter has better results compared to others and has been selected as the qualified existing filter. The Frost filter was modified by applying the fuzzy approach which was aimed at eliminating speckle noise while maintaining texture. There are four combinations of proposed filter, which are Frost-ATMAV, Frost-ATMED, Frost-TMAV, and Frost-TMED combination. Based on the results of comparison and evaluation of the filters, Frost-TMAV combination has been selected as the best-proposed filter. It had improved the performance of Frost filters for each parameter's measurement; it showed the improvement value of 19.47% for ENL, 8.48% for SI, 2.56% for mean, 6.15% for standard deviation and 2.00% for a variance, applied into homogeneous areas of ALOS-PALSAR images. While when used with heterogeneous areas, it improved 9.54% for ENL, 4.41% for SI, 3.03% for mean, 1.51% for standard deviation and 2.96% for the variance. It has been verified that the Frost-TMAV could be used for ALOS-PALSAR data pre-processing, which means that this filter can produce good-quality images based on parameters used when compared with other filters. | |
| 610 | 2 | 0 |
_aFaculty of Computer Systems & Software Engineering _xDissertations |
| 650 | 0 |
_aUniversities and Colleges _xDissertations |
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| 650 | 0 | _aTheses | |
| 999 |
_aVIRTUA40 _c7202 _d7208 |
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| 999 | _aVTLSSORT0080*0200*0400*0900*1000*2450*2600*3000*5000*5020*5040*5200*6100*6500*6501*9992 | ||