Background Postpartum bleeding is a component of the normal physiologic process that occurs after delivery or miscarriage. Normally, bleeding decreases over the first postpartum week. When bleeding is excessive and uterine atony has been excluded as a cause, the next most common cause of postpartum bleeding is retained products of conception (RPOC). The placenta usually constitutes the majority...

simple and fast reflectional symmetry detection algorithm has been developed in this Apaper. The algorithm employs only the original gray scale image and the gradient information of the image, and it is able to detect multiple reflectional symmetry axes of an object in the image. The directions of the symmetry axes are obtained from the gradient orientation histogram of the input gray scale ima...

This thesis describes the study of Artificial Neural Network (ANN) based techniques for the classification of aerial images for various types of land-use. In this study both gray-scale and multispectral aerial images were used in land-use classification. Three approaches were used for the preparation of the data as inputs to the ANN, including histograms of the pixel intensities, textural param...

A double Pulsed Gradient Spin Echo (d-PGSE) MR experiment was used to measure and assess the degree of local diffusion anisotropy in brain gray matter, and in a novel "gray matter" phantom that consists of randomly oriented tubes filled with water. In both samples, isotropic diffusion was observed at a macroscopic scale while anisotropic diffusion was observed at a microscopic scale, however, t...

In earlier work, a fast stochastic method for reconstructing a certain class of twodimensional binary images from projections using Gibbs priors was presented. In the present study, we introduce a stochastic segmentation of magnetic resonance gray-scale images of trabecular bone using Gibbs priors. We show some results as well as some post-processing that can be used to clean up segmentations o...

I. Indirect Methods A. Tiling Methods B. Variations on Tiling Methods C. Indirect, Voxel-Based Methods D. Indirect, Sub voxel-Based Methods II. Direct Methods for Display of Surfaces in Binary Data A. Octree Methods B. Object-Space Methods C. Image-Space Methods III. Direct Binary Methods for Display of Surfaces in Gray-Scale Data IV. Direct Binary Methods for Display of Intensity Distributions...

--Traffic sign recognition usually consists of two parts : detection and classification. In this paper we describe the classification stage using ring partitioned method. In this method, first the RGB image is converted into gray scale image using color thresholding and histogram specification technique. This gray scale image, called as specified gray scale image is invariant to the illuminatio...

We consider the problem of labeling connected components in a gray-scale image so that every component is connected, the maximum difference in the gray-scale values of the pixels within any component does not exceed a given value, and no component can be merged with a neighboring component. We develop two asymptotically optimal 0(n) time algorithms for generating such labelings on a mesh-connec...

In a gray scale image the pixel value ranges from 0 to 255. But when we use pixel-value differencing (pvd) method as image steganographic scheme, the pixel values in the stego-image may exceed gray scale range. An adaptive steganography based on modified pixel-value differencing through management of pixel values within the range of gray scale has been proposed in this paper. PVD method is used...

In this paper, we present a novel method for the voxel-wise extraction of rotation and gray-scale invariant features. These features are used for simultaneous segmentation and classification of anisotropic textured objects in 3D volume data. The proposed new class of phase based voxel-wise features achieves two major properties which can not be achieved by the previously known Haar-Integral bas...