Objectives: The present research has been carried out to investigate the effectiveness of group mindfulness-based cognitive therapy on modification of body image and quality of life in women with breast cancer undergoing mastectomy.  Materials: This research is a quasi-experimental study (pretest-posttest with control). In this clinical trial, 50 voluntary patients who had undergone maste...

Abstract. The term ‘image quality’ is a subject notion so it is difficult to quantify. However, it can be reasonably quantified by using statistical and psychophysical approaches. Furthermore, it is also possible to model the human perception of image quality. In this paper, large scale psychophysical experiments including pair comparison and categorical judgment were carried out to judge the p...

Many image quality and image difference metrics have been proposed over the last decades. An important factor when evaluating the image quality or image difference is the viewing distance. In this paper we propose a new image difference metric based on the simulation of detail visibility and total variation. The simulation of detail visibility by using shearlets takes into account the viewing c...

Introduction: This study, evaluate pediatric digital radiography. Due to the high rates of this test and the high sensitivity of children to ionizing radiation in comparison with adults, it is attempted to achieve near optimal conditions by reducing the dose and maintaining the image quality. The object of the study is to change the irradiation parameters such as kV and mA and ...

Introduction In CT imaging, metallic implants inside the tissues cause metal artifact that reduce the quality of image for diagnosis. In order to reduce the effect of this artifact, a new method with more appropriate results has been presented in this research work. Materials and Methods The presented method comprised of following steps: a) image enhancement and metal areas extraction, b) sinog...

We present a review of perceptual image quality metrics and their application to still image compression. The review describes how image quality metrics can be used to guide an image compression scheme and outlines the advantages, disadvantages and limitations of a number of quality metrics. We examine a broad range of metrics ranging from simple mathematical measures to those which incorporate...

In meaningful secret image sharing (MSIS), a is divided into n shadows. Each shadow and similar to the corresponding cover image. Meaningful shadows can reduce suspicion of attackers in transmission facilitate management. Previous MSIS schemes always include pixel expansion, cross-interference from different may exist when images are extremely unnatural with large black white blocks. this artic...