Perceptually-based compensation of light pollution in display systems

Baar, Jeroen van; Poulakos, Steven; Jarosz, Wojciech; Nowrouzezahrai, Derek; Tamstorf, Rasmus; Groß, Markus

doi:10.1145/2077451.2077460

Cited by 5 publications

(3 citation statements)

References 30 publications

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“…Other relevant works include pre-correction for light pollution (cross-talk) in display [Konrad et al 2000] and projection systems [van Baar et al 2011], and improving visual acuity for observers with degraded vision [Montalto et al 2015]. These problems conceptually compare to ours, but di er in aspects which make our problem more di cult to solve.…”

Section: Pre-correctionmentioning

confidence: 82%

“…These problems conceptually compare to ours, but di er in aspects which make our problem more di cult to solve. Namely, the degradation due to light pollution [van Baar et al 2011] has a comparatively simple additive character, while blurring due to subsurface scattering in heterogeneous materials has a complex, nonlinear behavior. Also, pre-correcting for vision degradation [Montalto et al 2015] can reasonably assume a constant point spread function (PSF), while in our case, the subsurface scattering kernel has a high, material-dependent spatial variance.…”

Section: Pre-correctionmentioning

confidence: 99%

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Scattering-aware texture reproduction for 3D printing

Elek

Sumin

Zhang³

et al. 2017

ACM Trans. Graph.

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Fig. 1. A still life photograph of our optimized printouts. The thickness of all the pictured samples is 1 cm.Color texture reproduction in 3D printing commonly ignores volumetric light transport (cross-talk) between surface points on a 3D print. Such light di usion leads to signi cant blur of details and color bleeding, and is particularly severe for highly translucent resin-based print materials. Given their widely varying scattering properties, this cross-talk between surface points strongly depends on the internal structure of the volume surrounding each surface point. Existing scattering-aware methods use simpli ed models for light di usion, and often accept the visual blur as an immutable property of the print medium. In contrast, our work counteracts heterogeneous scattering to obtain the impression of a crisp albedo texture on top of the 3D print, by optimizing for a fully volumetric material distribution that preserves the target appearance. Our method employs an e cient numerical optimizer on top of a general Monte-Carlo simulation of heterogeneous scattering, supported by a practical calibration procedure to obtain scattering parameters from a given set of printer materials. Despite the inherent translucency of the medium, we reproduce detailed surface textures on 3D prints. We evaluate our system using a commercial, ve-tone 3D print process and compare against the printer's native color texturing mode, demonstrating *Oskar Elek and Denis Sumin share the rst authorship of this work. Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for pro t or commercial advantage and that copies bear this notice and the full citation on the rst page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior speci c permission and/or a fee. Request permissions from permissions@acm.org. © 2017 ACM. 0730-0301/2017/11-ART241 $15.00 DOI: 10.1145/3130800.3130890 that our method preserves high-frequency features well without having to compromise on color gamut.

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Section: Pre-correctionmentioning

confidence: 82%

Section: Pre-correctionmentioning

confidence: 99%

Scattering-aware texture reproduction for 3D printing

Elek

Sumin

Zhang³

et al. 2017

ACM Trans. Graph.

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“…Concurrent Multiple Image Display: In stereo 3D systems, specialized hardware (anaglyph or polarization glasses, time multiplexing) enables separation between the left and right eye views which ideally do not suffer from any crosstalk [vBPJ*11]. Techniques of crosstalk reduction used in such systems, have similar goals to ours, but they affect only local image regions and typically favour one image content over another [vBPJ*11].…”

Section: Related Workmentioning

confidence: 99%

Purkinje Images: Conveying Different Content for Different Luminance Adaptations in a Single Image

Arpa

Ritschel

Çapın

et al. 2014

Computer Graphics Forum

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Providing multiple meanings in a single piece of art has always been intriguing to both artists and observers. We present Purkinje images, which have different interpretations depending on the luminance adaptation of the observer. Finding such images is an optimization that minimizes the sum of the distance to one reference image in photopic conditions and the distance to another reference image in scotopic conditions. To model the shift of image perception between day and night vision, we decompose the input images into a Laplacian pyramid. Distances under different observation conditions in this representation

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