Digital Earth is a visionary concept and outlines a charming prospect for the public. This paper starts from the concept and technologies of digital Earth and analyzes the architecture of geo-spatial information services of Digital Earth according to the developing trend of requirement for geo-spatial information services. As a promising prospect for Digital Earth, the digital measurable images...

Segmentation of images is a major task of image processing. There is no general segmentation procedure that can deal with all sorts of images, and the correct solution will always to a certain degree depend on subjectivity. This thesis focuses on segmentation of images using level set functions, and specifically explores the work of Tony Chan and Luminita Vese [CV01+]. A new model, the Chan-Tai...

Computer interpretation of images requires a decision on what to look for and a strategy exploiting this knowledge. A generic model for which objects make up the image is designed, assum ing low altitude aerial images. The generic model is exploited first to choose a representation of the image suitable for parsing, secondly for defining a parsing procedure. As representation, a segmentation is...

By far, many stereo-matching techniques have been successfully proposed and applied in digital aerial photogrammetry. However, due to some problems such as large parallaxes, occlusions, geometric deformations, and repetitive patterns in convergent close range images, these methods may not be applicable to the same level of success as that of aerial imagery. In order to overcome these shortcomin...

Background: Analog radiography has been replaced with digital radiography for canine diagnostic imaging in many veterinary clinics. There is no data comparing these modalities in a veterinary clinical setting to detect bronchial pattern signs in dogs. Objectives: In this study, computerized digital radiography (CR) and analog radiography were compared for diagnosis of bronchial pattern in dogs....

A Note to All Readers This is not an original electronic copy of the master's thesis, but a reproduced version of the authentic hardcopy of the thesis. I lost the original electronic copy during transit from India to USA in December 1999. I could get hold of some of the older version of the files and figures. Some of the missing figures have been scanned from the photocopy version of the hardco...

nowadays, quality control of bread, especially in large scale production, requires application of novel methods. in this research, image analysis of digital images of barbary bread enriched with soy flour was carried out at two storage intervals. using imagej software, crumb features (mean cell area and void fraction) were computed for each image. fractal dimensions of bread crumb images were m...

introduction: vertical root fracture (vrf) is a complication which is chiefly diagnosed radiographically. recently, film-based radiography has been substituted with digital radiography. at the moment, there is a wide range of monitors available in the market for viewing digital images. the present study aims to compare the diagnostic accuracy, sensitivity and specificity of medical and conventi...