The prospects for gray-scale (or multilevel) digital holographic data storage are theoretically and experimentally investigated. A simple signal-to-noise ratio (SNR) partitioning argument shows that when SNR scales as 1 over the number of holograms squared, five gray levels (log(2) 5 bits/pixel) would be expected to result in a 15% capacity increase over binary data pages. However, the addition...

K e y w o r d s W a v e l e t transforms, Image analysis, Edge detectors. 1. I N T R O D U C T I O N To help motivate this paper, we provide an introduction to some interesting problems in image processing. The second section introduces partial derivatives and how they are applied to the gray level values at the pixel locations. The third section introduces a few specific examples such as the v...

Error diffusion is one of the most widely used algorithms for halftoning gray scale and color images. It works by distributing the thresholding error of each pixel to unprocessed neighboring pixels, while maintaining the average value of the image. Error diffusion results in inter-pixel data dependencies that prohibit a straightforward data pipelining processing approach and increase the memory...

We have developed a visual system which adapts for varying illumination. The system has three features. First, the intenaity of the image is kept constant by automatically adjusting the iris value which i s a camera parameter. Semnd, t.lw gray levels of itn image portion or the user's interest are averaged on the assumptiorl illat localized illumination changes uniformly, and the difference bet...

While geodesic active contours (GAC) have become very popular tools for image segmentation, they are sensitive to model initialization. In order to get an accurate segmentation, the model typically needs to be initialized very close to the true object boundary. Apart from accuracy, automated initialization of the objects of interest is an important pre-requisite to being able to run the active ...

value creation as an essential concept of value-based marketing has not been studied in iran commercial banks with no native measuring scale. this study aimed at develops a native scale for measuring value creation and the measures index’s amount in iran commercial banks. accordingly as a result of theoretical and exploratory studies a comprehensive scale was developed which shows dimensions of...

It present the comparison of the performance of two different compression wavelet schemes namely Spatial-orientation Trees Wavelet (STW) and Adaptively Scanned Wavelet Difference Reduction (ASWDR). The paper analyses the compression schemes using gray scale image and color scale Image such that the quality of the reconstructed image. The characteristics of quality performance is calculate STW a...

conclusions: in this study, kidney transplant recipients with a lower ri and pi and a higher edv at 1week showed better graft function at 6 months after transplantation. results: fourteen patients (15.4%) had impaired graft function after 6 months (gfr less than 60 ml/min/1.73m2). multivariate linear regression analysis showed significant correlation between gfr at 6 months and ri, pi and edv w...