HOWARD: High-Order Wavefront Aberration Regularized Deconvolution for Enhancing Graphic Displays for Visually Impaired Computer Users

نویسندگان

  • Miguel Alonso
  • Armando Barreto
  • Malek Adjouadi
  • Julie A. Jacko
چکیده

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 efficiently. There are situations in which common forms of vision correction, such as contact lenses or glasses are not sufficient to provide the necessary compensation for some users to interact with graphic displays. This paper presents a model for the visual function of an imaging system, the implementation of an artificial eye with high-order wavefront aberrations, as well as a method for providing compensation of the artificial eye through a graphic display.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Graphical User Interfaces for Blind Users: An Overview of Haptic Devices

Graphical user interfaces greatly enhanced usability of computer systems over older text-based systems. Unfortunately, blind users gain very little from the benefits of these graphical user interfaces (GUIs). Past research has looked at communicating graphical information to blind computer users through other channels such as haptic or auditory senses. In this report, I provide an overview of r...

متن کامل

Regularized Blind Deconvolution

Image restoration involves the removal or minimization of degradation (blur, clutter, noise, etc.) in an image using a priori knowledge about the degradation phenomena. Blind restoration is the process of estimating both the true image and the blur from the degraded image characteristics, using only partial information about degradation sources and the imaging system. Our main interest concerns...

متن کامل

Third-order aberration analysis of tilted-pupil optical systems∗

The aberration field of an optical system with a tilted pupil is explored through expanding the vector expressions of the third-order wavefront aberrations. First, the vector forms of the wavefront aberrations are modified to obtain the aberration expressions with the pupil tilted; full field displays of coma and astigmatism in this situation are given. Then, the third-order aberration formulas...

متن کامل

Adjustable typography: an approach to enhancing low vision text accessibility.

Millions of people have low vision, a disability condition caused by uncorrectable or partially correctable disorders of the eye. The primary goal of low vision rehabilitation is increasing access to printed material. This paper describes how adjustable typography, a computer graphic approach to enhancing text accessibility, can play a role in this process, by allowing visually-impaired users t...

متن کامل

A Tactile Palette to Translate Graphics for the Visually Impaired

Spatial haptic displays, such as electrostatic vibration (electrovibration) based friction displays, augment flat panels and surfaces with spatially arranged tactile content. Such devices can be useful for the visually impaired to translate visual images to tactile ones on demand. In this paper, we explore a tactile palette that consisted of a set of six perceptually distinct tactile stimuli co...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006