3.2: High Dynamic Range Projection Systems

Damberg, Gerwin; Seetzen, Helge; Ward, Greg; Heidrich, Wolfgang; Whitehead, Lorne

doi:10.1889/1.2785211

Cited by 15 publications

(10 citation statements)

References 6 publications

(1 reference statement)

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“…Similar approaches are explained by Damberg et al [Damberg et al 2007] who achieve a simultaneous contrast of 2,695:1. A variety of inverse tone-mapping techniques are now being developed, such as Banterle et al [Banterle et al 2006] and others, to convert existing LDR content into an HDR format to be viewed on such devices.…”

Section: Introduction and Related Workmentioning

confidence: 54%

Superimposing dynamic range

Bimber

Iwai

2008

ACM SIGGRAPH 2008 New Tech Demos

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Figure 1: Registering a projector precisely to a hardcopy allows extending contrast, perceivable tonal resolution and color space beyond the capabilities of either hardcopy or projector. From left to right: experimental setup and example for achieved registration precision (projected checker on printed checker with a field size of 0.62 mm -or 7 cycles per degree (cpd) at 50 cm viewing distance), low and high exposure photographs of different hardcopies (ePaper display, photographic print, laser print and X-ray print) amplified with LED and DLP projectors. AbstractWe present a simple and cost-efficient way of extending contrast, perceived tonal resolution, and the color space of static hardcopy images, beyond the capabilities of hardcopy devices or low-dynamic range displays alone. A calibrated projector-camera system is applied for automatic registration, scanning and superimposition of hardcopies. We explain how high-dynamic range content can be split for linear devices with different capabilities, how luminance quantization can be optimized with respect to the non-linear response of the human visual system as well as for the discrete nature of the applied modulation devices; and how inverse tone-mapping can be adapted in case only untreated hardcopies and softcopies (such as regular photographs) are available. We believe that our approach has the potential to complement hardcopy-based technologies, such as X-ray prints for filmless imaging, in domains that operate with high quality static image content, like radiology and other medical fields, or astronomy.

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Section: Introduction and Related Workmentioning

confidence: 54%

Superimposing dynamic range

Bimber

Iwai

2008

ACM SIGGRAPH 2008 New Tech Demos

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“…Some examples include dimmable light sources (lamps, LED, lasers), global dynamic irises, better contrast spatial light modulators (SLM) or cascaded stages of light blocking SLMs [Damberg et al 2007]. Light re-allocation and recycling methods have also been proposed, but given their prototype stage results, are somewhat impractical for high quality image projection [Hoskinson et al 2010].…”

Section: Technical Approach and Resultsmentioning

confidence: 99%

Efficient, high brightness, high dynamic range projection

Damberg¹,

Ballestad²,

Kozak³

et al. 2014

ACM SIGGRAPH 2014 Emerging Technologies

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Figure 1: Effect of light re-direction principle: steering instead of blocking of light within a projection system. Left: Prototype of the monochromatic 532nm, high peak luminance, HDR projector (foreground) and HDR image on screen (background). Center: Our results: luminance measurement of the projected HDR image. Right: Traditional (light attenuating) projector for comparison using the same laser light source. For useful visual comparison the image has been tone mapped (brightened) to account for the peak luminance and contrast capabilities of the traditional projector.

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“…An HDR projector has also been demonstrated, by Damber et al [57], which utilizes dual modulation within the projector in order to lower the black level substantially as compared to a conventional projector. However, the peak brightness is still limited.…”

Section: Professional Hdr Display Devicesmentioning

confidence: 99%

The high dynamic range imaging pipeline : Tone-mapping, distribution, and single-exposure reconstruction

Eilertsen¹

2018

Linköping Studies in Science and Technology. Dissertations

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3.2: High Dynamic Range Projection Systems

Cited by 15 publications

References 6 publications

Superimposing dynamic range

Superimposing dynamic range

Efficient, high brightness, high dynamic range projection

The high dynamic range imaging pipeline : Tone-mapping, distribution, and single-exposure reconstruction

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