A Fast and Flexible Computer Vision System for Implanted Visual Prostheses

Autor:	Wai Ho Li
Rok vydání:	2015
Předmět:	Phosphene Cortical implants Visual prosthesis business.industry Dynamic range Computer science Wearable computer Image processing Computer vision Artificial intelligence business
Zdroj:	Computer Vision-ECCV 2014 Workshops ISBN: 9783319161983 ECCV Workshops (3)
DOI:	10.1007/978-3-319-16199-0_48
Popis:	Implanted visual prostheses generate visual percepts by electrically stimulating the human visual pathway using an array of electrodes. The resulting bionic vision consists of a spatial-temporal pattern of bright dots called phosphenes. This patient-specific phosphene pattern has low resolution, limited dynamic range and is spatially irregular. This paper presents a computer vision system designed to deal with these limitations, especially spatial irregularity. The system uses a new mapping called the Camera Map to decouple the flexible spatial layout of image processing from the inflexible layout of phosphenes experienced by a patient. Detailed simulations of a cortical prosthesis currently in preclinical testing were performed to create phosphene patterns for testing. The system was tested on a wearable prototype of the cortical prosthesis. Despite having limited computational resources, the system operated in real time, taking only a few milliseconds to perform image processing and visualisations of simulated prosthetic vision.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5f1e8d5fa88805b5c4c0e5e040ec54cf https://doi.org/10.1007/978-3-319-16199-0_48 Zobrazit plný text záznamu