Metameric Varifocal Holograms

Walton, David R.; Kavaklı, Koray; Anjos, Rafael Kuffner dos; Swapp, David; Weyrich, Tim; Ürey, Hakan; Steed, Anthony; Ritschel, Tobias; Akşit, Kaan

doi:10.1109/vr51125.2022.00096

Cited by 11 publications

(5 citation statements)

References 52 publications

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“…This limit stems from the fact that PSF, the non-negative transfer function of an additive display, could support a limited range of frequencies and cause contrast loss. Our work could be made to be complementary to holographic displays [ 27 , 28 , 46 ], which promise a unique solution for this issue originating from non-negativity in additive displays.…”

Section: Discussionmentioning

confidence: 99%

ChromaCorrect: prescription correction in virtual reality headsets through perceptual guidance

Güzel¹,

Beyazian²,

Chakravarthula³

et al. 2023

Biomed. Opt. Express

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A large portion of today’s world population suffers from vision impairments and wears prescription eyeglasses. However, prescription glasses cause additional bulk and discomfort when used with virtual reality (VR) headsets, negatively impacting the viewer’s visual experience. In this work, we remedy the usage of prescription eyeglasses with screens by shifting the optical complexity into the software. Our proposal is a prescription-aware rendering approach for providing sharper and more immersive imagery for screens, including VR headsets. To this end, we develop a differentiable display and visual perception model encapsulating the human visual system’s display-specific parameters, color, visual acuity, and user-specific refractive errors. Using this differentiable visual perception model, we optimize the rendered imagery in the display using gradient-descent solvers. This way, we provide prescription glasses-free sharper images for a person with vision impairments. We evaluate our approach and show significant quality and contrast improvements for users with vision impairments.

show abstract

Section: Discussionmentioning

confidence: 99%

ChromaCorrect: prescription correction in virtual reality headsets through perceptual guidance

Güzel¹,

Beyazian²,

Chakravarthula³

et al. 2023

Biomed. Opt. Express

View full text Add to dashboard Cite

show abstract

“…This limit stems from the fact that PSF, the non-negative transfer function of an additive display, could support a limited range of frequencies and cause contrast loss. Our work could be made to be complementary to holographic displays [28,29,47], which promise a unique solution for this issue originating from non-negativity in additive displays.…”

Section: Chromatic Aberrationsmentioning

confidence: 99%

ChromaCorrect: Prescription Correction in Virtual Reality Headsets through Perceptual Guidance

Akşit¹,

Güzel²,

Beyazian³

et al. 2023

Preprint

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A large portion of today\'s world population suffers from vision impairments and wears prescription eyeglasses. However, prescription glasses causes additional bulk and discomfort when used with Virtual Reality (VR) headsets, negatively impacting the viewer\'s visual experience. In this work, we remedy the usage of prescription eyeglasses with screens by shifting the optical complexity into the software. Our proposal is a prescription-aware rendering approach for providing sharper and more immersive imagery for screens, including VR headsets. To this end, we develop a differentiable display and visual perception model encapsulating the human visual system\'s display-specific parameters, color, visual acuity, and user-specific refractive errors. Using this differentiable visual perception model, we optimize the rendered imagery in the display using gradient-descent solvers. This way, we provide prescription glasses-free sharper images for a person with vision impairments. We evaluate our approach and show significant quality and contrast improvements for users with vision impairments.

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“…The perception module of Odak is specifically focused on the field of visual perception, and in particular on the application of gaze-contingent perceptual loss functions. It includes an implementation of a metameric loss function, 12,13 which when utilized in optimization tasks, enforces a close visual similarity between the optimized image and the ground truth image. The loss function is derived from prior research on fast metamer generation, utilizing statistical models and computational acceleration techniques.…”

Section: Visual Perceptionmentioning

confidence: 99%

Flexible modeling of next-generation displays using a differentiable toolkit

Akşit¹,

Kavaklı²

2023

Practical Holography XXXVII: Displays, Materials, and Applications

Self Cite

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We introduce an open-source toolkit for simulating optics and visual perception. The toolkit offers differentiable functions that ease the optimization process in design. In addition, this toolkit supports applications spanning from calculating holograms for holographic displays to foveation in computer graphics. We believe this toolkit offers a gateway to remove overheads in scientific research related to next-generation displays.

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Metameric Varifocal Holograms

Cited by 11 publications

References 52 publications

ChromaCorrect: prescription correction in virtual reality headsets through perceptual guidance

ChromaCorrect: prescription correction in virtual reality headsets through perceptual guidance

ChromaCorrect: Prescription Correction in Virtual Reality Headsets through Perceptual Guidance

Flexible modeling of next-generation displays using a differentiable toolkit

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