A parametric SAR image formation scheme is proposed in this paper. Based on a model describing the received signal, the parameters of the model can be used to characterize the illuminated scene. A realization of parameter estimation via atomic decomposition is presented. The estimated parameters are then mapped onto the iso-range-Doppler grid to form a SAR image. Simulation results demonstrate ...

background and aim: adolescence is an important stage of life accompanied by deep physical and psychological changes frequently leading to body image dissatisfaction. body image dissatisfaction, found to predict the formation of eating disturbaces, psychiatric disturbances and low self- esteem. the present study examined the body image dissatisfaction and body mass index in adolescent girls. me...

Digital Image Analysis (DIA) has been employed to characterize the time evolution of a bubble injected from a single orifice into a pseudo 2-dimansional gas-solid fluidized bed. The injected bubble diameter increased with the square root of time before detachment. During bubble free flight in the bed, its diameter remains approximately constant. The center of mass of the bubble increases with t...

Detection and localization of underwater mines remains a challenging and important problem for safe operation of naval platforms. A number of new technologies exploit airbome LIDARS, which can penetrate the air-water interface and optically detect and localize underwater mines. Such systems process the received optical field generated by scattering within the water column, and have proven to be...

A new algorithm for 3D reconstruction of twodimensional crystals from projections is presented, and applied to biological macromolecules imaged using electron microscopy. Its main departure from the traditional approach is that it works in real space, rather than in Fourier space, and is iterative. This approach has the advantage of making it convenient to introduce additional constraints (such...

The multilook technique used in synthetic aperture radar image formation consists in adding incoherently M looks. As these looks can be obtained in their complex form and are correlated, the phase and correlation informations should be taken into account in the speckle reduction process. In this paper, we propose an improved multilook technique based on the use of these two informations. We app...