There is a significant number of visually impaired individuals who suffer sensitivity loss to high spatial\r\nfrequencies, for whom current optical devices are limited in degree of visual aid and practical application.\r\nDigital image and video processing offers a variety of effective visual enhancement methods that can be\r\nutilised to obtain a practical augmented vision head-mounted display device. The high spatial frequencies of\r\nan image can be extracted by edge detection techniques and overlaid on top of the original image to improve\r\nvisual perception among the visually impaired. Augmented visual aid devices require highly user-customisable\r\nalgorithm designs for subjective configuration per task, where current digital image processing visual aids\r\noffer very little user-configurable options. This paper presents a highly user-reconfigurable morphological\r\nedge enhancement system on field-programmable gate array, where the morphological, internal and external\r\nedge gradients can be selected from the presented architecture with specified edge thickness and magnitude. In\r\naddition, the morphology architecture supports reconfigurable shape structuring elements and configurable\r\nmorphological operations. The proposed morphology-based visual enhancement system introduces a high\r\ndegree of user flexibility in addition to meeting real-time constraints capable of obtaining 93 fps for high-definition\r\nimage resolution.
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