Browsing Optometry and Vision Science by Supervisor "Lakshminarayanan, Vasudevan"
Now showing items 1-12 of 12
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Advancing Hyperacuity for Vision Screening
(University of Waterloo, 2023-09-22)Introduction: The human visual system is extremely sensitive to certain spatial visual tasks. It can detect the subtle misalignment of closer objects to a degree of 2-5 arcseconds, which is smaller than the foveal cone ... -
Assessment of ocular aberrations at scaled pupil size and reduced Shack-Hartmann spot number
(University of Waterloo, 2019-05-07)Wavefront aberrations describe the optical imperfections of the eye by measuring the complete refractive elements of the eye. However, the reliability of ocular aberration is uncertain under some challenges and issues. ... -
Automated Cataract Grading using Smartphone Images
(University of Waterloo, 2021-02-02)A cataract is an age-related eye disease and is one of the leading ophthalmological public health problems in developed and developing countries. Early detection of cataracts is necessary to preserve sight and prevent the ... -
Automated Segmentation of Retinal Optical Coherence Tomography Images
(University of Waterloo, 2018-08-21)Aim. Optical Coherence Tomography (OCT) is a fast and non-invasive medical imaging technique which helps in the investigation of each individual retinal layer structure. For early detection of retinal diseases and the study ... -
Deep Generative Modeling Based Retinal Image Analysis
(University of Waterloo, 2020-06-16)In the recent past, deep learning algorithms have been widely used in retinal image analysis (fundus and OCT) to perform tasks like segmentation and classification. But to build robust and highly efficient deep learning ... -
Developing algorithms for the analysis of retinal Optical Coherence Tomography images
(University of Waterloo, 2018-09-04)Vision loss, with a prevalence loss greater than 42 million in the United States is one of the major challenges of today's health-care industry and medical science. Early detection of different retinal-related diseases ... -
Diabetic retinopathy grading with respect to the segmented lesions
(University of Waterloo, 2022-05-19)One of the leading causes of irreversible vision loss is Diabetic Retinopathy (DR). The International Clinical Diabetic Retinopathy scale (ICDRS) provides grading criteria for DR. Deep Convolutional Neural Networks (DCNNs) ... -
Estimation of Heading direction Using Optic Flow
(University of Waterloo, 2019-08-26)Background The purpose of this study was to investigate the effect of the reduction of the uniocular light luminance as well as the effect of unequal retinal image sizes by using uniocular size lenses, on the heading ... -
Explainable AI for retinal OCT diagnosis
(University of Waterloo, 2021-01-20)Artificial intelligence methods such as deep learning are leading to great progress in complex tasks that are usually associated with human intelligence and experience. Deep learning models have matched if not bettered ... -
Motion Processing of Reverse Phi
(University of Waterloo, 2019-11-18)Introduction: When the contrast of the successive images is reversed for a target in an apparent motion stimulus, the perceived direction is reversed, i.e., opposite of phi motion, which is an integration of the sequential ... -
A novel Automatic Optic Disc and Cup Image Segmentation System for Diagnosing Glaucoma using RIGA dataset
(University of Waterloo, 2016-04-07)The optic nerve head (ONH) of the retina is a very important landmark of the fundus and is altered in optic nerve pathology especially glaucoma. Numerous imaging systems are available to capture the retinal fundus and from ... -
Psychophysical Studies Of Motion Perception In Autism Spectrum Disorders
(University of Waterloo, 2019-05-23)Introduction Studies have shown considerable evidence of visual dysfunction in Autism Spectrum Disorders (ASD). Motion perception research in ASD reports a superior performance in processing motion information of fine ...