Introduction: In this study the effect of psychodrama on body image of female students at secondary school has been examined. Method: In this quasi experimental study, all the female students at secondary school who were studying at high school in academic year 2016-2017 in Tehran were selected as a statistical society. Among the high schools in Tehran's 15th district, one school was selected ...

The electromagnetically induced transparency (EIT) effect is a quantum coherence between different atomic transition channels. absorption of the ensemble significantly reduced or even close to zero, and at same time, this accompanied by strong spectral dispersion near resonant frequency atoms, which widely used in group velocity control, light pulse storage, coherent manipulation on field. In s...

To reproduce an image, it is necessary to map out of gamut colors of the image to destination gamut. It is clear that the best color gamut mapping introduces the perceptually closest image to the original one. In this study, a new color gamut mapping is purposed by the aid of Genetic Algorithm (GA). The color difference between the original and mapped images based on S-LAB formula was chosen as...

The image encryption is widely used to secure transmission of data in an open internet and internet works. For image based cryptosystems chaotic maps can be used as a key because of its nonlinear component. Due to sensitivity to initial conditions, chaotic maps have best alternative for designing dynamic permutation of the image based cryptosystem. A chaotic map is used to generate permutation ...

in many computer vision applications, segmenting and extraction of moving objects in video sequences is an essential task. background subtraction, by which each input image is subtracted from the reference image, has often been used for this purpose. in this paper, we offer a novel background-subtraction technique for real-time dynamic background generation using color images that are taken fro...

Introduction:In this study, ECG signals have been embedded into medical images to create a novel blind watermarking method. The embedding is done when the original image is compressed using the EZW algorithm. The extraction process is performed at the decompression time of the watermarked image. Materials and Methods: The multi-resolution watermarking with a secret key algorithm developed in th...

introduction: the effect of education on esthetic perception is still unclear. this study aims to compare the perception of smile esthetics, under various conditions, among general and specialist dentists. materials and methods: a photograph of a woman’s smile was digitally altered using a software image editing program. alterations were made tothe dental midline, anterior gingival display, buc...