The description of vowel variation in the Pittsburgh area was advanced considerably by the description of 13 residents of the city and the surrounding region in Labov et al. 2006, which describes a rotation of vowels in the lower central and back regions identified as the Pittsburgh Chain Shift (PCS). This shift is characterized by a merger of (o) and (oh), as in many dialect regions of the US ...

Technical limitations in image capturing usually impose defective, such as contrast degradation. There are different approaches to improve the contrast of an image. Among the exiting approaches, un-sharp masking is a popular method due to its simplicity in implementation and computation. There is an important parameter in un-sharp masking, named gain factor, which affects the quality of the enh...

this article tends to analyze “the death of zahhak”; one of the paintings of the great shahnama “shahnama of shah tahmasb” which is done by soltan mohammad; based on semiotic and structural methods. by using library resources and content analyzing with the help of “actantial model” as a tool, coincidence of the narrative structure is studied in this persian painting. first of all, based on one ...

Image quality models usually include a mechanism whereby artifacts are masked by the image acting as a background. Scientific study of visual masking has followed two traditions: contrast masking and noise masking, depending primarily on whether the mask is deterministic or random. In the former tradition, masking is explained by a decrease in the effective gain of the early visual system. In t...

Image fusion is a method for obtaining a highly informative image by merging the relative information of an object obtained from two or more image sources of the same scene. The satellite cameras give a single band panchromatic (PAN) image with high spatial information and multispectral (MS) image with more spectral information. The problem exists today is either PAN or MS image is available fr...

background: spinal dural avf is the most common type of spinal vascular malformation. however, presenting symptoms differ according to site of spinal involvement. this study described a case of arteriovenous malformation with paraparesis and incontinence. case presentation: diagnosis of patient was confirmed by clinical and imaging examination using magnetic resonance image and ruling out other...

background: medical image interpolation is recently introduced as a helpful tool to obtain further information via initial available images taken by tomography systems. this information may be useful for better diagnosis of possible lesions or better tumor delineation at radiation treatment. to do this, deformable image registration algorithms are mainly utilized to perform image interpolation ...

Image zooming is one of the current issues of image processing where maintaining the quality and structure of the zoomed image is important. To zoom an image, it is necessary that the extra pixels be placed in the data of the image. Adding the data to the image must be consistent with the texture in the image and not to create artificial blocks. In this study, the required pixels are estimated ...