A reconfigurable real-time morphological system for augmented vision

There is a significant number of visually impaired individuals who suffer sensitivity loss to high spatial frequencies, for whom current optical devices are limited in degree of visual aid and practical application. Digital image and video processing offers a variety of effective visual enhancement...

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Bibliographic Details
Published in:EURASIP journal on advances in signal processing 2013-08, Vol.2013 (1), p.1-13, Article 134
Main Authors: Gibson, Ryan M, Ahmadinia, Ali, McMeekin, Scott G, Strang, Niall C, Morison, Gordon
Format: Article
Language:English
Subjects:
Architecture
Devices
Digital imaging
Engineering
Hardware implementation of machine vision systems
Image detection
Image processing
Quantum Information Technology
Real time
Signal,Image and Speech Processing
Spintronics
Video
Vision
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Summary:There is a significant number of visually impaired individuals who suffer sensitivity loss to high spatial frequencies, for whom current optical devices are limited in degree of visual aid and practical application. Digital image and video processing offers a variety of effective visual enhancement methods that can be utilised to obtain a practical augmented vision head-mounted display device. The high spatial frequencies of an image can be extracted by edge detection techniques and overlaid on top of the original image to improve visual perception among the visually impaired. Augmented visual aid devices require highly user-customisable algorithm designs for subjective configuration per task, where current digital image processing visual aids offer very little user-configurable options. This paper presents a highly user-reconfigurable morphological edge enhancement system on field-programmable gate array, where the morphological, internal and external edge gradients can be selected from the presented architecture with specified edge thickness and magnitude. In addition, the morphology architecture supports reconfigurable shape structuring elements and configurable morphological operations. The proposed morphology-based visual enhancement system introduces a high degree of user flexibility in addition to meeting real-time constraints capable of obtaining 93 fps for high-definition image resolution.
ISSN:1687-6180
1687-6180
DOI:10.1186/1687-6180-2013-134