BACKGROUND In recent years, an increased interest has been seen in the area of medical image processing and, as a consequence, Computer Aided Diagnostic (CAD) systems. The basic purpose of CAD systems is to assist doctors in the process of diagnosis. CAD systems, however, are quite expensive, especially, in most of the developing countries. Our focus is on developing a low-cost CAD system. Toda...

The misperceived direction of type-II plaids has posed a problem for the intersection of constraints (IOC) model of two-dimensional motion perception. Alais et al. (1994, Vision Research, 34, 1823-1834) examined the perceived direction of type-II plaids and concluded that in addition to the direction signalled by the IOC process, a monocular mechanism signalling the motion of plaid features (bl...

Iris image quality assessment is an important part of iris recognition system because the qualities of iris images would largely influence the recognition results. In this paper, we analyze and compare several representative quality assessment methods, and then propose an effective method based on Laplacian of Gaussian operator for iris image assessment. Through computer simulations of several ...

Tracking a moving person is challenging because a person’s appearance in images changes significantly due to articulation, viewpoint changes, and lighting variation across a scene. And different people appear differently due to numerous factors such as body shape, clothing, skin color, and hair. In this thesis, a multi-cue tracking technique is introduced that uses prior information about the 2...

This paper discusses the implementation of several edge recognition systems: Sobel; Laplacian of Gaussian; and Canny, on commerically available Datacube MaxVideo image-processing hardware at or near frame rate. Any approximations necessary to operate at these throughput rates are described and a comparison made between the output of these systems and slower implementations on general-purpose ma...

With the increasing availability of low-cost – yet precise – depth cameras, “texture+depth” content has become more and more popular in several computer vision and 3D rendering tasks. Indeed, depth images bring enriched geometrical information about the scene which would be hard and often impossible to estimate from conventional texture pictures. In this paper, we investigate how the geometric ...

Measurement of blob-like structure in the boundary region of ECRH plasmas in a simple magnetic configuration in QUEST (major radius, R = 0.68 m, minor radius, a = 0.40 m and toridal magnetic field, Bt = 0.25 T at R = 0.64 m) using combination of a fast imaging camera with a movable and rotatable Langmuir probe system was presented. The blob-like structures, which had an elongated structure alon...

Hybrid PET/CT imaging with the use of 18F FDG is a widely used technique major indications in oncology for staging, re-staging and monitoring response to therapy. There issue partial volume effect PET images which affects image quality as well quantitative accuracy small lesions. Multiple attempts have been made resolve these issues. The aim our study was look into impact Point‐spread-function ...

A common approach to the image matching problem is representing images as sets of features in some feature space followed by establishing correspondences among the features. Previous work by Huttenlocher and Ullman [1] shows how a similarity transformation rotation, translation, and scaling between two images may be determined assuming that three corresponding image points are known. While robu...

Context. User Interfaces (UIs) intensively rely on event-driven programming: widgets send UI events, which capture users’ interactions, to dedicated objects called controllers. Controllers use several UI listeners that handle these events to produce UI commands. Objective. The first objective of this work is to show empirical evidences that the code that describes and controls UIs can be affect...