Vision Correcting Displays Based on Inverse Blurring and Aberration Compensation
نویسندگان
چکیده
The concept of a vision correcting display involves digitally modifying the content of a display using measurements of the optical aberrations of the viewer’s eye so that the display can be seen in sharp focus by the user without requiring the use of eyeglasses or contact lenses. Our first approach inversely blurs the image content on a single layer. After identifying fundamental limitations of this approach, we propose the multilayer concept. We then develop a fractional frequency separation method to enhance the image contrast and build a multilayer prototype comprising transparent LCDs. Finally, we combine our viewer-adaptive inverse blurring with o↵-the-shelf lenslets or parallax barriers and demonstrate that the resulting vision-correcting computational display system facilitates significantly higher contrast and resolution as compared to previous solutions. We also demonstrate the capability to correct higher order aberrations.
منابع مشابه
Wide-field compensation of monochromatic eye aberrations: expected performance and design trade-offs.
The optical quality of the human eye varies across the visual field. Hence an exact compensation of the eye aberration for a given field point can give rise to a less-than-optimum compensation in neighboring field regions. We have studied some aspects of this problem and present here an approach to design wide-field (< 10 degrees) optically thin correcting elements, e.g., phase plates, deformab...
متن کاملA Framework for Aberration Compensated Displays
We are building upon our earlier work in Vision-Realistic Rendering, which is the computation of a displayed image that incorporates the characteristics of a particular individual’s entire optical system. The key concept is, given the optical measurements of an individual’s optical system, perform an “inverse blurring” computation on what would normally be displayed such that when this blurred ...
متن کاملPersonalised and dynamic image precompensation for computer users with ocular aberrations
Most of the computer users with ocular aberrations such as myopia, hyperopia and other high order aberrations are subject to the problems of visual blurring. Conventional methods used to counter visual blurring include spectacles and contact lenses. In this paper, we introduce an image preprocessing method that is designed to counteract the visual blurring caused by the aberration of the eye. T...
متن کاملCompensation of distant phase-distorting layers. I. Narrow-field-of-view adaptive receiver system.
We analyze various scenarios of adaptive wave-front phase-aberration correction in optical-receiver-type systems when inhomogeneties of the wave propagation medium are either distributed along the propagation path or localized in a few thin layers remotely located from the receiver telescope pupil. Phase-aberration compensation is performed with closed-loop control architectures based on decoup...
متن کاملHOWARD: High-Order Wavefront Aberration Regularized Deconvolution for Enhancing Graphic Displays for Visually Impaired Computer Users
High-Order Wavefront Aberration Regularized Deconvolution (HOWARD) is a complete closed loop system developed for simulating human visual function with the primary goal of enhancing graphic computer displays for users that have refractive errors (resulting in difficulty interacting with visual displays). Visual function is a primary requirement for a human being to engage in computer usage effi...
متن کامل