This paper introduces an operational and extensible system for sensor modeling, triangulation, DEM extraction and stereo mapping of space borne pushbroom sensor images. The methods for sensor modeling and triangulation are introduced with the consideration of the newer sensors such as EROS A1, ALOS PRISM, FORMOSAT2 and THEOS satellite systems. They are based on the collinearity equation and bun...

abstract identification & supervision of fluctuations in physical ecosystems have a special place in optimum using of natural resources. urmia lake is the largest interior natural lake of iran which its potentials and ecosystem & environmental characteristics attracted researchers and environmental planners attention. fluctuations in area and perimeter of the lake attracted many attentions in r...

Spatially registered Landsat Thematic Mapper (TM) and SPOT (Systeme Pour I'Observation de la Terre) panchromatic images were merged by combining multiresolution wavelet decomposition components from each, and then reconstructing a merged image using the inverse wavelet transform. Three wavelet merging techniques were compared to the intensityhue-saturation merging technique. The comparison resu...

Monitoring o f coral reef bleaching has hitherto been based on regional-scale, in situ data. Larger-scale trends, however, must be determined using satellite-based observations. Using both a radiative transfer simulation and an analysis o f multitemporal Landsat TM images, the ability o f satellite remote sensing to detect and monitor coral reef bleaching is examined. The radiative transfer sim...

Completely cloud-free remotely sensed images are preferred, but they are not always available. Although the average cloud coverage for the entire planet is about 40 percent, the removal of clouds and cloud shadows is rarely studied. To address this problem, a closest spectral fit method is developed to replace cloud and cloud-shadow pixels with their most similar nonclouded pixel values. The ob...

Eastern hemlock is in decline in many parts of its range in the eastern United States due primarily to infestation by the hemlock woolly adelgid (HWA). In Shenandoah National Park, HWA rapidly killed many hemlock stands after first appearing in 1989. While the severity of hemlock decline in Shenandoah National Park may preclude saving the hemlock forest component, an examination of the progress...

RAMSEY, E. III; WERLE, D.; SUZUOKI, Y.; RANGOONWALA, A., and LU, Z., 2012. Limitations and potential of satellite imagery to monitor environmental response to coastal flooding. Journal of Coastal Research, 28(2), 457–476. West Palm Beach (Florida), ISSN 0749-0208. Storm-surge flooding and marsh response throughout the coastal wetlands of Louisiana were mapped using several types of remote sensi...

The most widely known remote-sensing data are satellite images (typically LANDSAT or other visible imagery), which are used in the geosciences for a multitude of applications, including landuse, urbanization, sea-ice expansion, to name only a few. Commonly, these remote-sensing data are analyzed with the help of commercial software systems (eg. ENVI, ERDAS-IMAGINE). Analysis methods employ the ...