We present an edge preserving and denoising filter for enhancing the features in images, which contain an ROI having a narrow spatial extent. Typical examples include angiograms, or ROI’s spatially distributed in multiple locations and contained within an outlying region, such as in multiple-sclerosis. The filtering involves determination of multiplicative weights in the spatial domain using an...

The halftone quality of an error diffusion halftone depends on the error filter response. Apart f o rm the magnitude response being a low pass, it is desirable to have a zero phase response. In this paper we propose the iterative error diffusion halftoning algorithm that allows use of non-causal error filter (such as zero phase error filter). W e present simulation results showing that the prop...

PURPOSE We propose a novel method of administration of antiangiogenic and antioxidant drugs, with potential clinical application in the treatment of proliferative diabetic retinopathy (PDR) and age-related macular degeneration (AMD). We suggest the encapsulation of drugs in implantable sustained release devices, limited by membranes with pores in the tens of nanometers diameter range, which dis...

The Distributed Diffusion Kalman Filter (DDKF) algorithm has earned great attention lately and shows an elaborate way to address the issue of distributed optimization over networks. Estimation tracking a single state vector collectively by nodes have been point focus. However, there are several multi-task-oriented issues where optimal for each node may not be same. This work considers sensor ne...

Edge detection algorithms have traditionally utilized the Gaussian Linear Filter (GLF) for image smoothing. Although GLF has very good properties in removing noise and unwanted artifacts from an image, it is also known to remove many valid edges. To cope with this problem, edge preserving smoothing filters have been proposed and they have recently attracted increased attention. In this paper, w...

The security of data exchange is considered a significant problem. It requires the use of various cryptographic algorithms, such as stream cipher and block cipher. The implementation of a secure cryptographic block cipher algorithm requires the generation of strong substitution and permutation layers. These layers should satisfy the principles of security (diffusion and confusion). The proposed...

An accurate method for T2-weighted MRI segmentation according to tissue transversal magnetization decay rates is presented. By means of a sequence of geometric image filters a classification of the pixels’ intensity decay curves is provided. This can be done through a double strategy: First a log-convexity filter is applied in order to regularize image intensity decay by adjusting its geometric...