000			03009nam a2200397 a 4500
005			20260818090456.0
008
035			_a.b11503397
099		9	_aAIT Thesis no. CS-91-30
100	1		_aPallewatta, P. K. M. M.
245	1	0	_aDeveloping a neural network based contextual classifier for cloud detection and making cloud free mosaic images
260			_aBangkok : _bAsian Institute of Technology, _c1991
300			_a56 leaves
490	1		_aThesis ; _vno. CS-91-30
500			_aA thesis submitted in partial fulfillment of the requirement for the degree of master of engineering, School of Engineering and Technology
502			_aThesis (M.Eng.) - Asian Institute of Technology, 1991
520			_aCertain areas of the earth's surface are constantly covered by clouds during most of the time of the year. Obtaining cloud free images of such areas is an extremely difficult task. Neural networks can be meaningfully used as classifiers in situations where the data to be classified is of non parametric nature. This will be the situation encountered when we consider all the clouds as one class and all. the clear sky areas as another class. The classification accuracy can be increased if we take in to account the contextual dependencies between objects present in the image. The theory of statistical contextual classification is well developed and has been already successfully applied to cloud detection and classification. In this study we extend the contextual classification algorithms to neural networks. This method relives us from calculating complex class conditional distributions, and does not rely on the parametric nature of the distributions. The contextual features have been used to reduce the instances of misclassification produced by a pixel by pixel neural network cloud detector. This experimental part of this study has been carried out with 50m resolution MOS-1 (Marine Observation Satellite) data. A relatively cloud free mosaic image has also been made.
650	1	0	_aNeural circuitry
650	1	0	_aPattern perception
700	1		_aHosomura T., _eChairperson
700	0		_aHosomura T, _eExamination committee
700	1		_aZhao, Ming, _eExamination committee
710	2		_aGovernment of Japan, _eScholarship donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. CS-91-30
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B17352
907			_a.b11503397 _bmnait _cr
902			_a240404
998			_b0 _c960603 _dm _ea _fr _g0
945			_lmnait
945			_lmnarc
942			_c22
942			_c40
909			_aBarcode : 30050120676894 _bCREATED : 2013-11-22 _cRECORD # : i12749047 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
909			_aBarcode : 30050120353320 _bCREATED : 2016-09-06 _cRECORD # : i13026975 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
999			_c28203 _d28203