design, simulation and optimal selection of cosine-linear frequency modulation waveform (cnlfm) based on correlated ambiguity function (af) method for the purpose of synthetic aperture radar (sar) is done in this article. the selected optimum cnlfm waveform in contribution with other waveforms are applied directly into a sar image formation algorithm (ifa) and their quality effects performance ...

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the range imaging based on conventional pulse compression technique requires lfm signal that sampled by nyquist rate. in order to high resolution increased in range in pulse compression, so the lfm bandwidth has to increase. consequently this procedure dictated limitations on adc sampling. the stretch processing is one of techniques decreasing nyquist rate in radars. in this method the nature o...

speckle is a granular disturbance in coherent images such as synthetic aperture radar (sar) images, modeled as a multiplicative noise. this noise degrades the sar image and complicates the image exploitation using automated image analysis techniques. several approaches have been developed to reduce the effect of speckle noise. recently, the application of compressed sensing (cs) is explored in ...

The images we process in computer vision are formed by light bouncing off surfaces in the world and into the lens of the system. The light then hits a sensor inside the camera and produces electric charges that are read by an electronic circuit and converted to voltages. These are in turn sampled by a device called a digitizer (or frame grabber) to produce the numbers that computers eventually ...

The Internet can be a powerful cross-cultural incoming tourism communication tool if used in a proper way. Visitor images of destinations are important drivers of consumer choice and therefore, how destinations provide information to visitors is critically important to image formation. This text first looks at the general features of Internet as a cross-culture communication tool in tourism, ba...