We introduce subband correlation filters (SCFs) as a solution to the problem of object recognition at multiple resolution levels in quantized transformed imagery. The approach synthesizes correlation filters that operate directly on subband coefficients rather than on image data. We explore two techniques to accomplish the reduced-resolution recognition: (1) training the correlation filters to ...

Recent developments in interferometric radar technique largely highlighted potentialities of radar interferometry for the generation of high resolution DEM (Digital Elevation Models). Nevertheless, the performances of this almost automatic process are strongly degraded for tortured reliefs and for vegetation areas. A research in progress with the CNES (Centre National d'Etudes Spatiales), CSSI ...

The vulnerability of alpine environments to climate change presses an urgent need accurately model and understand these ecosystems. Popularity in the use digital elevation models (DEMs) derive proxy environmental variables has increased over past decade, particularly as DEMs are relatively cheaply acquired at very high resolutions (VHR; <1 m spatial resolution). Here, we implement a multisca...

Valley networks have been observed on Mars since the Viking orbiter took photos in 19761980. They are interpreted as an erosional record of a warmer, wetter Mars then what currently exists. Scaling relationships have been used to evaluate terrestrial streams and can be used on Mars. Results from these relationships can provide insight into the mechanisms that formed the valley networks. These r...

The ortho-rectification of satellite images is normally a timeconsuming and expensive task. It can strongly benefit from automatic or semiautomatic procedures in order to avoid field work for ground control survey. This article presents an automated method to automatically georeference satellite images acquired by the ASTER sensor. The method is based on automatic matching of images and Digital...

In recent years a new generation of high-resolution SAR satellites became operational like the Canadian Radarsat-2, the Italian Cosmo/Skymed, and the German TerraSAR-X systems. The spatial resolution of such devices achieves the meter domain or even below. Key products derived from remote sensing imagery are Digital Elevation Models (DEM). Based on SAR data various techniques can be applied for...

Introduction Modern urban areas are places of continuous change. Over periods of time of months, buildings may be torn down and new ones started; streets can be altered and new ones constructed; railways or other means of urban transport may change. The models of urban areas must be able to accommodate this change. This is especially so since models are significantly higher resolution than prev...

The Topographic Wetness Index (TWI) is a commonly used proxy for soil moisture. predictive capability of TWI influenced by the flow-routing algorithm and resolution Digital Elevation Model (DEM) that derived from. Here, we examine using 11 algorithms at DEM resolutions 1–30 m. We analyze relationship between field-quantified moisture statistical modeling methods 5,200 study plots with over 46 0...