Head blight on wheat, caused by Fusarium spp., is a serious problem for both farmers and food production due to the concomitant production of highly toxic mycotoxins in infected cereals. For selective mycotoxin analyses, information about the on-field status of infestation would be helpful. Early symptom detection directly on ears, together with the corresponding geographic position, would be i...

Hyperspectral imaging data within the wavelength range of 400–1000 nm were used to classify common skin conditions (i.e., normal, scar, decay, and insect bite) achacha fruits. The band ratio (BR) spectral angle mapper (SAM) algorithms in a binary classification. Furthermore, SAM, support vector machine (SVM), artificial neural network (ANN) models multiclass performances classification assessed...

The recent development and miniaturization of hyperspectral sensors embedded in drones has allowed the acquisition images with high spectral spatial resolution. characteristics both (viewing angle, flying altitude, resolution) create opportunities to consider use imagery map monitor macroalgae communities. In general, overflight areas be mapped is conconmittently associated accompanied measurem...

M a p p i n g of snow and estimation of snow characteristics from satellite remote sensing data require that we distinguish snow from other surface cover and from clouds and compensate for the effects of the atmosphere and rugged terrain. The spectral signature of the snowpack is calculated from a radiative transfer model accounting for scattering and absorption by the ice grains, water inclusi...

We describe the implementation and performance of a parallel, hybrid evolutionary-algorithm-based system, which optimizes image processing tools for feature-finding tasks in multi-spectral imagery (MSI) data sets. Our system uses an integrated spatio-spectral approach and is capable of combining suitably-registered data from different sensors. We investigate the speed-up obtained by paralleliza...

In this paper we propose a novel one-layer coding/shaping transmission system for the bandwidth-limited regime based on singlelevel codes and sigma-mapping [1]. Specifically, we focus on cyclestationary information sources with independent symbols. High spectral efficiencies can be achieved by combine at the transmitter a Turbo code with a sigma-mapper. Furthermore, the encoded symbols are modu...

In this work, we investigate whether the performance of pansharpening methods depends on their input data format; in case spectral radiance, either its original floating-point format or an integer-packed fixed-point format. It is theoretically proven and experimentally demonstrated that based multiresolution analysis are unaffected by Conversely, crucial for component substitution, unless inten...

Department of Geography, Miami University, Oxford, OH 45056 ([email protected]). Abstract Remote sensing techniques have been widely used to map fire scars in the western United States, but have not been thoroughly tested in the eastern portion of the country. In this study, a 1998 Landsat Thematic Mapper (TM) image and a 1999 Enhanced Thematic Mapper (ETM1) image were used to test different i...

We test the use of hyperspectral sensors for the early detection of the invasive denseflowered cordgrass (Spartina densiflora Brongn.) in the Guadalquivir River marshes, Southwestern Spain. We flew in tandem a CASI-1500 (368–1052 nm) and an AHS (430–13,000 nm) airborne sensors in an area with presence of S. densiflora. We simplified the processing of hyperspectral data (no atmospheric correctio...

Lunar impact melt deposits have unusual surface properties, unlike any measured terrestrial lava flow. Radar observations suggest that they are incredibly rough at decimeter scales, but appear smooth in high-resolution, meter-scale optical images. The cause of their roughness is unknown. In this work, we investigate the properties from seven lunar craters, ranging size 7.5 to 96 km diameter, an...