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랜세트 - 5호 TM 데이타를 이용한 구분후 (區分后) 비교 및 영상대차의 (映像對差) 습지대 변화 탐지 (探知) 기법에 관한 비교연구
A Comparative Study of Wetland Change Detection Techniques Using Post - Classification Comparison and Image Differencing on Landsat - 5 TM Data
정성학(Song Hak Choung), Joseph J . Ulliman(Joseph J . Ulliman)
UCI I410-ECN-0102-2008-520-002101627

The extensive Snake River floodplain in Northwest United States has experienced major changes in water channels and vegetation types due to floodings. To detect the change of wetland cover-types for the period of 1985 and 1988, post-classification comparison and image differencing change detection techniques were evaluated using Landsat-5 TM digital data. Differenced infrared-band images indicated better accuracy indices than any visible-band images. A thresholding technique was applied to identify the change ;ind no change categories from the transformed images produced by image differencing, The problems in using different accuracy indices, including the Kappa coefficient of agreement, overall accuracy, producer`s accuracy, user`s accuracy, and average accuracy(based on both the producer`s and user`s accuracy approaches) in determining an optimal threshold level, were examined.

[자료제공 : 네이버학술정보]
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