Simulation and assessment of bioinspired visual processing system for epi-retinal prostheses.
Retinal prosthesis represents the best near-term hope for individuals with chronic blinding disease of the outer retina. However the small number of stimulating electrodes produces a poor, low resolution image. We propose a new preprocessing method for epi-retinal implants and validate it through a novel simulation of the implanted blind perception. Twenty-one normally sighted, untrained subjects performed a face recognition test. Three different electrodes grids were simulated: rectangular, hexagonal and log-polar. The results show that the proposed pre-processing method has a good and statistically significant performance improvement.
Vurro
Milena
M
Dept. of Biomed. Eng., Polytech. of Milan, Italy. mv650280@lau.polimi.it
Baselli
Giuseppe
G
Orabona
Francesco
F
Sandini
Giulio
G
D000328:Adult; D001698:Biomedical Engineering; D001766:Blindness / Q000628:therapy; D003198:Computer Simulation; D006801:Humans; D008875:Middle Aged; D008954:Models, Biological; D017711:Nonlinear Dynamics; D011474:Prosthesis Design; D012160:Retina; D012984:Software; D014796:Visual Perception