A Computational Light Field Display for Correcting Visual Aberrations
General Material Designation
[Thesis]
First Statement of Responsibility
Huang, Fu-Chung
Subsequent Statement of Responsibility
Barsky, Brian A
.PUBLICATION, DISTRIBUTION, ETC
Name of Publisher, Distributor, etc.
UC Berkeley
Date of Publication, Distribution, etc.
2013
DISSERTATION (THESIS) NOTE
Body granting the degree
UC Berkeley
Text preceding or following the note
2013
SUMMARY OR ABSTRACT
Text of Note
Vision problems such as near-sightedness, far-sightedness, as well as others, are due to optical aberrations in the human eye. These conditions are prevalent, and the population is growing rapidly. Correcting optical aberrations is traditionally done optically using eyeglasses, contact lenses, or refractive surgeries; these are sometime not convenient or not always available to everyone. Furthermore, higher order aberrations are not correctable with eyeglasses. In this work, we introduce a new computation based aberration-correcting light field display: by incorporating the persons own optical aberration into the computation, we alter the content shown on the display, such that he or she will be able to see it in sharp focus without wearing eyewear. We analyze the image formation models; through the retinal light field projection, we find it is possible to compensate for the optical blurring on the target image by prefiltering with the inverse blur. Using off-the-shelf components, we built a light field display prototype that supports our desired inverse light field prefiltering. The results show a significant contrast improvement and resolutionenhancement over prior approaches. Finally, we also demonstrate the capability to correct for higher order aberrations.