Glaucoma is a leading cause of permanent blindness. Retinal fundus image examination is useful for early detection of glaucoma. In order to evaluate the presence of glaucoma, the ophthalmologists determine the cup and disc areas and they diagnose glaucoma using a vertical cup-to-disc ratio. However, determination of the cup area is very difficult, thus we propose a method to measure the cup-to-...

Aims. We determine the central mass distribution of galaxy cluster RX J1347−1145 using strong gravitational lensing. Methods. High resolution HST/ACS images of the galaxy cluster RX J1347−1145 have enabled us to identify several new multiple image candidates in the cluster, including a 5 image system with a central image. The multiple images allow us to construct an accurate 2-dimensional mass ...

Human lower limb images were successfully acquired with an acceleration rate of up to 8x by using wideband parallel imaging. The non-uniform multislice profile problem of this technique was successfully compensated to enhance the image quality of the outer slices. Also the signal-to-noise ratio (SNR) of this ultra fast imaging technique, wideband parallel imaging, was verified to be similar wit...

We evaluate a wavelet-based algorithm to estimate the coil sensitivity modulation from surface coils. This information is used to improve the image homogeneity of magnetic resonance imaging when a surface coil is used for reception, and to increase image encoding speed by reconstructing images from under-sampled (aliased) acquisitions using parallel magnetic resonance imaging (MRI) methods for ...

In this paper, we develop a vision based obstacle detection system by utilizing our proposed fisheye lens inverse perspective mapping (FLIPM) method. The new mapping equations are derived to transform the images captured by the fisheye lens camera into the undistorted remapped ones under practical circumstances. In the obstacle detection, we make use of the features of vertical edges on objects...

This study investigated the influence of changing lower face vertical proportion on the attractiveness ratings scored by lay people.Ninety-two social science students rated the attractiveness of a series of silhouettes with normal, reduced or increased lower face proportions. The random sequences of 10 images included an image with the Eastman normal lower face height relative to total face hei...

Our contribution in this work is a new measure of similarity between surface points based on a spin-image surface representation that allows efficient identification of corresponding points between two surfaces. We represent a molecular surface as a collection of two-dimensional (2D) spin images associated to Connolly's points [1]. Given a surface point P with normal n, its associated spin imag...

Various aspects of digital fine art reproduction imaging were examined to determine possible sources for image color errors. Differences between two color charts used for making profiles were examined and tested with a special test chart. Possible color errors due to the camera’s spectral response were investigated. The use of tone curve adjusted chart images for profiling were compared against...

AbstractObjective: To investigate the impact of respiratory motion on localization, and quantification lung lesions for the Gross Tumour Volume utilizing an in-house developed Auto3Dreg programme and dynamic NURBS-based cardiac-torso digitised phantom (NCAT). Methods: Respiratory motion may result in more than 30% underestimation of the SUV values of lung, liver and kidney tumour lesions. The m...