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Adaptive Contrast Stretching for Land Observation in Cloudy Low Resolution Satellite Imagery
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  • Adaptive Contrast Stretching for Land Observation in Cloudy Low Resolution Satellite Imagery
  • Adaptive Contrast Stretching for Land Observation in Cloudy Low Resolution Satellite Imagery
저자명
Lee. Hwa-Seon,Lee. Kyu-Sung
간행물명
大韓遠隔探査學會誌
권/호정보
2012년|28권 3호|pp.287-296 (10 pages)
발행정보
대한원격탐사학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Although low spatial resolution satellite images like MODIS and GOCI can be important to observe land surface, it is often difficult to visually interpret the imagery because of the low contrast by prevailing cloud covers. We proposed a simple and adaptive stretching algorithm to enhance image contrast over land areas in cloudy images. The proposed method is basically a linear algorithm that stretches only non-cloud pixels. The adaptive linear stretch method uses two values: the low limit (L) from image statistics and upper limit (U) from low boundary value of cloud pixels. The cloud pixel value was automatically determined by pre-developed empirical function for each spectral band. We used MODIS and GOCI images having various types of cloud distributions and coverage. The adaptive contrast stretching method was evaluated by both visual interpretation and statistical distribution of displayed brightness values.