Cloud screening is the process of classifying pixels in satellite images which contain clouds and is an important step in processing remotely-sensed images. This paper applies inhomogeneous statistical spatial models in the form of Markov random eld models (MRF) to this problem and develops an e cient algorithm for the estimation of model parameters. The algorithm has a natural parallel decompo...

Use of satellite images is known as a new technique to study changes in vegetation cover. On the other hand, rainfall plays a key role on the condition of vegetation cover. This article investigates the changes in vegetation and its relation to rainfall days and monthly time intervals over the (2000-2003) period. The region of study is part of Azerbaijan province located in an area surrounded. ...

Flood hazard maps were developed using remote sensing (RS) data for the historical event of the 1988 flood with data of elevation height, and geological and physiographic divisions. Flood damage depends on the hydraulic factors which include characteristics of the flood such as the depth of flooding, rate of the rise in water level, propagation of a flood wave, duration and frequency of floodin...

Front Cover: The figure illustrates the geographic distribution of the USGS land-cover categories based on the AVHRR satellite 1-km resolution data.

Algorithms for retrieval of the temperatures of snow surfaces have been examined for melting snow in mountainous areas in southern Norway. The tested algorithms include dualband techniques as well as dual-view techniques. The study also included existing calibration data for the algorithms. The study has showed satisfactory results for two dual-band techniques, the Key and Coll algorithms. They...

Large scale and operational applications based on contiguous coverage with SAR data require a set of dedicated techniques in terms of signal handling and product interpretation. The GRFM SAR map of the West African rainforest domain is derived from some 340 JERS-1 SAR images acquired in a time span of 45 days. The original data with a pixel spacing of 12.5 m are spatially compressed by wavelet ...

The most apparent effect of a tropical cyclone on the upper ocean is the marked cooling of sea surface temperature (SST) that is clearly seen in Advanced Very High Resolution Radiometer (AVHRR) images of SST. As a storm intensifies, the increasing wind speed may increase evaporation and supply the storm with the necessary source of heat for further intensification. However, the significant SST ...

Measuring sea surface currents is a technological challenge in oceanography. Feature tracking in time series of remote sensing imagery has been proposed as a way to address this problem. The most commonly used approach is the maximum cross-correlation (MCC) method, originally developed to track cloud motion. We propose a new technique that makes use of Daubechies wavelet analysis combined with ...