Tailored displays to compensate for visual aberrations

Pamplona, Vitor F.; Oliveira, Manuel M.; Aliaga, Daniel G.; Raskar, Ramesh

doi:10.1145/2185520.2185577

Cited by 52 publications

(48 citation statements)

References 40 publications

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“…As observed by Pamplona et al [2012], light field pre-distortion is feasible only once resolutions significantly exceed current commercial panels (approaching 1,000 ppcm). While reducing contrast, multilayer pre-filtering can be implemented using current-generation displays with 100 ppcm.…”

Section: Correcting Defocus With Light Field Displaysmentioning

confidence: 95%

“…We compare two operation modes: light field pre-distortion and synthetic multilayer pre-filtering. As recently introduced by Pamplona et al [2012], given a light field display of sufficient resolution, the former operation mode involves emitting a pre-distorted light field such that, viewed by the optics of the eye, an undistorted image is formed on the retina. This mode of operation is similar to existing wavefront correction methods [Kaufman and Alm 2002].…”

Section: Correcting Defocus With Light Field Displaysmentioning

confidence: 99%

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Correcting for optical aberrations using multilayer displays

et al. 2012

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f r o n t l a y e r r e a r l a y e r wa t c h f a c e c o r r e c t e d f o r p r e s b y o p i a c o n v e n t i o n a l d i s p l a y s i n g l e -l a y e r p r e -f i l t e r i n g t wo -l a y e r p r e -f i l t e r i n g p e r c e i v e d i ma g e s d i s p l a y e d i ma g e sFigure 1: Correcting presbyopia using multilayer displays. A presbyopic individual observes a watch at a distance of 45 cm. The watch appears out of focus due to the limited range of accommodation. To read the watch, corrective eyewear (e.g., bifocals) must be worn with a +2.50 diopter spherical lens. (Left) As a substitute for eyewear, the watch can be modified to use a multilayer display containing two semi-transparent, light-emitting panels. The images displayed on these layers are pre-filtered such that the watch face appears in focus when viewed by the defocused eye. (Right) From left to right along the bottom row: the perceived image using a conventional display (e.g., an unmodified LCD), using prior single-layer pre-filtering methods, and using the proposed multilayer pre-filtering method. Corresponding images of the watch face are shown along the top row. Two-layer pre-filtering, while increasing the watch thickness by 6 mm, enhances contrast and eliminates ringing artifacts, as compared to prior single-layer pre-filtering methods. (Watch image c Timex Group USA, Inc.) AbstractOptical aberrations of the human eye are currently corrected using eyeglasses, contact lenses, or surgery. We describe a fourth option: modifying the composition of displayed content such that the perceived image appears in focus, after passing through an eye with known optical defects. Prior approaches synthesize pre-filtered images by deconvolving the content by the point spread function of the aberrated eye. Such methods have not led to practical applications, due to severely reduced contrast and ringing artifacts. We address these limitations by introducing multilayer pre-filtering, implemented using stacks of semi-transparent, light-emitting layers. By optimizing the layer positions and the partition of spatial frequencies between layers, contrast is improved and ringing artifacts are eliminated. We assess design constraints for multilayer displays; autostereoscopic light field displays are identified as a preferred, thin form factor architecture, allowing synthetic layers to be displaced in response to viewer movement and refractive errors. We assess the benefits of multilayer pre-filtering versus prior light field pre-distortion methods, showing pre-filtering works within the constraints of current display resolutions. We conclude by analyzing benefits and limitations using a prototype multilayer LCD.

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Section: Correcting Defocus With Light Field Displaysmentioning

confidence: 95%

Section: Correcting Defocus With Light Field Displaysmentioning

confidence: 99%

Correcting for optical aberrations using multilayer displays

et al. 2012

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“…Our immediate future step hence is to first measure the actual myopia/hyperopia PSFs of each individual user, e.g., by using the tailored display [20], and use the ground truth PSFs to estimate the tone mapping function. In addition, our Bézier curve model aims to replicate the contrast at the most frequent intensity.…”

Section: Discussionmentioning

confidence: 99%

“…Alonso et al [1] used simple Wiener deconvolution to compute the pre-compensated image and discussed how contrast loss affects the user experience. To enhance contrast, Pamplona et al [20] designed a special computational display using multiple layers of LCDs. Huang et al [9] later developed a multi-layer pre-filtering on an ultra-high dynamic range light field display.…”

Section: Improving Visual Acuitymentioning

confidence: 99%

Image Pre-compensation: Balancing Contrast and Ringing

Kang

et al. 2014

2014 IEEE Conference on Computer Vision and Pattern Recognition

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“…Ray based, pupil integrating displays have been used to examine how rays are refracted as they move through the eye's optical system [Pamplona et al 2011] and for correction of a viewer's refractive error [Huang et al 2014;Pamplona et al 2012].…”

Section: Fixation Cues In Eye Imagingmentioning

confidence: 99%

eyeSelfie

et al. 2015

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Eye alignment to the optical system is very critical in many modern devices, such as for biometrics, gaze tracking, head mounted displays, and health. We show alignment in the context of the most difficult challenge: retinal imaging. Alignment in retinal imaging, even conducted by a physician, is very challenging due to precise alignment requirements and lack of direct user eye gaze control. Self-imaging of the retina is nearly impossible.We frame this problem as a user-interface (UI) challenge. We can create a better UI by controlling the eye box of a projected cue. Our key concept is to exploit the reciprocity, "If you see me, I see you", to develop near eye alignment displays. Two technical aspects are critical: a) tightness of the eye box and (b) the eye box discovery comfort. We demonstrate that previous pupil forming display architectures are not adequate to address alignment in depth. We then analyze two ray-based designs to determine efficacious fixation patterns. These ray based displays and a sequence of user steps allow lateral (x, y) and depth (z) wise alignment to deal with image centering and focus. We show a highly portable prototype and demonstrate the effectiveness through a user study.

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Tailored displays to compensate for visual aberrations

Cited by 52 publications

References 40 publications

Correcting for optical aberrations using multilayer displays

Correcting for optical aberrations using multilayer displays

Image Pre-compensation: Balancing Contrast and Ringing

eyeSelfie

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