Color consistency for digital multi-projector stereo display systems

Kresse, Wolfram; Reiners, Dirk; Knöpfle, Christian

doi:10.1145/769953.769985

Cited by 19 publications

(14 citation statements)

References 8 publications

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“…5,6 The research group at Fraunhofer-IGD developed the HEyeWall, a stereo tiled display, based on Infitec stereo separation. 7 From their work it becomes clear that maintaining a large stereo tiled displays with manually aligned projectors is very time consuming. We present a working stereo tiled display based on back-projection and linear polarization using automatic calibration in the rendering software that minimally impacts the display performance.…”

Section: Related Work Stereo Displaysmentioning

confidence: 99%

Lessons learned from building and calibrating the ICWall, a stereo tiled display

Schaaf¹,

Germans²,

Bal³

et al. 2007

Computer Animation & Virtual

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Implementation of stereo tiled displays is a rather demanding task. In this article we want to share the lessons we have learned during the design and construction of the ICWall tiled display. This large display, used in a classroom setting, is a high-resolution stereo tiled display (2 × 8 tiles), built from low-cost commodity components. The overall image is produced by an array of projectors. When building such a system, a key challenge is to align the projector images. We describe our automated approach for alignment/calibration of the left-and right-eye stereo images. We provide measurements that show accuracy of this procedure. We explain and compare two calibration approaches: a single-pass and a two-pass rendering method to align the tiled images. We explain how to provide seamless image on the tiled display and which issues have to be solved. We also discuss the depth perception issues on the ICWall for the large audiences. Another important aspect, is the architecture of the software used for PC-cluster-based rendering. We describe Aura, the parallel scene graph API that is used for rendering on our tiled display.

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Section: Related Work Stereo Displaysmentioning

confidence: 99%

Lessons learned from building and calibrating the ICWall, a stereo tiled display

Schaaf¹,

Germans²,

Bal³

et al. 2007

Computer Animation & Virtual

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“…To transform these triangles onto a common triangle, image data need to be processed before they enter the imager (LCD, LCoS or DMD chip) of the digital projector. The algorithm for this color conversion is a customary algorithm for calibrating colors in electronic imaging systems [2].…”

Section: Fidelity In Color Reproductionmentioning

confidence: 99%

Stereo projection using interference filters

Jorke

Fritz

2006

Stereoscopic Displays and Virtual Reality Systems XIII

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Stereo projection using interference filters is an advanced wavelength multiplexing approach, that specifically takes into account the nature of the human eye, which is characterized by three types of color receptors. Accordingly, the filters used to code image information for the left and for the right eye image have three narrow bands each. In the present paper the current status of the interference filter technique for stereo imaging is outlined.

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“…In addition to evaluating the loss of quality due to realtime restrictions and the influences of animated scenes instead of static images, such experiments need to determine the influence of restricted resolutions of the display devices. The obvious advantage of BTFs compared to BRDF material representations (i.e., accurate reproduction of small-scale surface structure) will only be visible in applications if high-resolution displays like the HEyeWall [Kresse et al 2003] are employed or if users zoom onto specific regions.…”

Section: Small Scale Materials Structuresmentioning

confidence: 99%

Verification of rendering quality from measured BTFs

Meseth

Müller

Klein

et al. 2006

Proceedings of the 3rd Symposium on Applied Perception in Graphics and Visualization

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One of the most important, still unsolved problems in computer graphics is the generation of predictive imagery, i.e., images that represent perfect renditions of reality. Such perfect images are required in application areas like Virtual Prototyping for making reliable decisions in the costly design development of novel products like cars and airplanes. Recently, measured material properties received significant attention since they enable generation of highly accurate images that appear to be predictive at a first glance.In this work we investigate the degree of realism that can be achieved using measured bidirectional texture functions (BTFs) by comparing photographs and rendered images at two scales. To analyze the realism of rendered images at a coarse scale, we compare the light distribution resulting from standard materials to the one from measured BTFs by automatic procedures. At a fine scale, accurate reproduction of material structures is checked by a psychophysical study. Our results show that measured BTFs lead to much more accurate results than standard materials at both scales.

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Color consistency for digital multi-projector stereo display systems

Cited by 19 publications

References 8 publications

Lessons learned from building and calibrating the ICWall, a stereo tiled display

Lessons learned from building and calibrating the ICWall, a stereo tiled display

Stereo projection using interference filters

Verification of rendering quality from measured BTFs

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