With progress in radar systems, a number of methods have been developed for signal processing and detection in radars. A number of modern radar signal processing methods use time-frequency transforms, especially the wavelet transform (WT) which is a well-known linear transform. The interference canceling is one of the most important applications of the wavelet transform. In Ad-hoc detection met...

a research plan was developed to evaluate the occurrence of enteroviruses, giardia cysts and cryptosporidium oocysts in thirty-five different sites in the city of mashhad, iran. the occurrence of these pathogenic microorganisms was evaluated to investigate a possible health risk in the communities. for the detection of enteroviruses in water samples, the conventional method of cell culture, usi...

skin cancer has been the most usual and illustrates 50% of all new cancers detected each year. if they detected at an early stage, treatment can become simple and economically. accurate skin lesion segmentation is important in automated early skin cancer detection and diagnosis systems. the aim of this study is to provide an effective approach to detect the skin lesion border on a purposed imag...

background common carotid artery (cca) ultrasound with measurement of intima-media thickness (imt) is a safe and noninvasive technique for assessing subclinical atherosclerosis and determining cardiovascular risks. moreover, the pattern of wall thickening in the brachial artery (ba) is rather diffuse compared to the carotid artery and may be a more sensitive indicator of long-term systemic expo...

A research plan was developed to evaluate the occurrence of enteroviruses, giardia cysts and cryptosporidium oocysts in thirty-five different sites in the city of Mashhad, Iran. The occurrence of these pathogenic microorganisms was evaluated to investigate a possible health risk in the communities. For the detection of enteroviruses in water samples, the conventional method of cell culture...

Digital image is often degraded by many kinds of noise during the process of acquisition and transmission. To make subsequent processing more convenient, it is necessary to decrease the effect of noise. There are many kinds of noises in image, which mainly include salt and pepper noise and Gaussian noise. This paper focuses on median filters to remove the salt and pepper noise. After summarizin...

in this paper, we deal with the problem of adaptive coherent signal detection in gaussian interference (clutter plus noise) for surveillance pulse radars. some of the adaptive radar detectors exploit the ar model for clutter. most of these detectors have been obtained using the glr test. this test relies on the maximum likelihood estimation whose accuracy depends on the number of data. whereas,...

Hand gesture recognition is very important to communicate in sign language. In this paper, an effective object tracking and hand gesture recognition method is proposed. This method is combination of two well-known approaches, the mean shift and the motion detection algorithm. The mean shift algorithm can track objects based on the color, then when hand passes the face occlusion happens. Several...

 A step-by-step algorithm for enhancement of periodic signals that are highly corrupted by additive uncorrelated white gausian noise is proposed. In each adaptation step a new parallel second-order section is added to the previous filters. Every section has only one adjustable parameter, i.e., the center frequency of the self-tuning filter. The bandwidth and the convergence factor of each secti...