In the paper, a procedure for detecting and tracking vehicles in a roundabout is presented. The image subtraction technique is used, along with geometric and radiometric filters. The problems due to the camera motion and the vehicle images overlapping are discussed. The results of a test regarding a roundabout are presented, in a case with a negligible variation of the background radiometric ch...

Forty-year calibrated record of earth-reflected radiance from Landsat: A review" (2012). a b s t r a c t a r t i c l e i n f o Sensors on Landsat satellites have been collecting images of the Earth's surface for nearly 40 years. These images have been invaluable for characterizing and detecting changes in the land cover and land use of the world. Although initially conceived as primarily pictur...

SAR data acquired over hilly terrain show geometric and radiometric distortions due to the sidelooking configuration of the radar sensors. These effects usually lead to a distortion of the useful backscatter information related to land cover or bio-geophysical parameters. Post-processing approaches to remove such distortions are very important to broaden the application possibilities of radar r...

The Visible Infrared Imaging Radiometer Suite (VIIRS) on-board the first Joint Polar Satellite System (JPSS) completed its sensor level testing on December 2014. The JPSS-1 (J1) mission is scheduled to launch in December 2016, and will be very similar to the Suomi-National Polar-orbiting Partnership (SNPP) mission. VIIRS instrument has 22 spectral bands covering the spectrum between 0.4 and 12....

Simulated data were used to investigate the relationships between image properties and change detection accuracy in a systematic manner. The image properties examined were class separability, radiometric normalization and image spectral band-to-band correlation. The change detection methods evaluated were post-classification comparison, direct classification of multidate imagery, image differen...

The Joint Polar Satellite System (JPSS) launched the Suomi National Polar-Orbiting Partnership (NPP) satellite including the Visible Infrared Imager Radiometer Suite (VIIRS) on October 28, 2011which has the capability to monitor ocean color properties. Four months after launch, we present an initial assessment of the VIIRS ocean color products including inter-comparisons with satellite and in s...

The first METEOSAT Second Generation satellite will come into service in 2001. It will acquire image data in 12 spectral channels with a total data volume of 265 Mbytes every 15 minutes. These data are received, processed, and distributed by the EUMETSAT Ground Segment in real-time. The Ground Segment architecture is composed of blocks of grouped functionality called facilities. The Image Proce...

Previously established radiometric techniques were used to assess the effectiveness of combined antimicrobial drug-inhibitory drug (drug-inhibitor) treatment on two clinical isolates of the Mycobacterium avium complex representing three colony variants: smooth opaque (dome) (SmO), smooth transparent (SmT), and rough (Rg). All variants were identified as members of the M. avium complex; however,...

The radiometric method has been used to detect the presence of bacteria in serial dilutions of nine bacterial species with and without agitation. It was also found that the detection time is proportional to the dilution showing high sensitivity down to one colony forming unit and the agitation resulted in different manners depending upon bacterial species (JPMA 37 : 34 , 1987).

A simple algorithm is described that computes the radiometric response function of an imaging system, from images of an arbitrar), scene taken using different exposures. The exposure is varied by changing either the aperture setting or the shutter speed. The algorithm does not require precise estimates of the exposures used. Rough estimates of the ratios of the exposures (e.g. Fnumber settings ...