Recovering high dynamic range radiance maps from photographs
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
Multi-projector displays using camera-based registration
VIS '99 Proceedings of the conference on Visualization '99: celebrating ten years
A distributed graphics system for large tiled displays
VIS '99 Proceedings of the conference on Visualization '99: celebrating ten years
Tracking graphics state for networked rendering
HWWS '00 Proceedings of the ACM SIGGRAPH/EUROGRAPHICS workshop on Graphics hardware
Distributed rendering for scalable displays
Proceedings of the 2000 ACM/IEEE conference on Supercomputing
Achieving color uniformity across multi-projector displays
Proceedings of the conference on Visualization '00
WireGL: a scalable graphics system for clusters
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
PixelFlex: a reconfigurable multi-projector display system
Proceedings of the conference on Visualization '01
Color and Brightness Appearance Issues in Tiled Displays
IEEE Computer Graphics and Applications
Immersive Planar Display Using Roughly Aligned Projectors
VR '00 Proceedings of the IEEE Virtual Reality 2000 Conference
EGVE '03 Proceedings of the workshop on Virtual environments 2003
Color gamut matching for tiled display walls
EGVE '03 Proceedings of the workshop on Virtual environments 2003
Perceptual photometric seamlessness in projection-based tiled displays
ACM Transactions on Graphics (TOG)
Camera-Based Calibration Techniques for Seamless Multiprojector Displays
IEEE Transactions on Visualization and Computer Graphics
Tools and Applications for Large-Scale Display Walls
IEEE Computer Graphics and Applications
ICWall: a calibrated stereo tiled display from commodity components
Proceedings of the 2006 ACM international conference on Virtual reality continuum and its applications
Transforming your shadow into colorful visual media: multiprojection of complementary colors
Computers in Entertainment (CIE) - Theoretical and Practical Computer Applications in Entertainment
Transforming your shadow into colorful visual media: multi-projection of complementary colors
Proceedings of the 2005 ACM SIGCHI International Conference on Advances in computer entertainment technology
Shadow Elimination and Blinding Light Suppression for Interactive Projected Displays
IEEE Transactions on Visualization and Computer Graphics
Color mixing property of a projector-camera system
PROCAMS '08 Proceedings of the 5th ACM/IEEE International Workshop on Projector camera systems
Improving brightness for a multi-projector display considering image content
ISVC'06 Proceedings of the Second international conference on Advances in Visual Computing - Volume Part II
A GPU-based framework of photometric uniformity for multi-projector tiled display
EGVE'07 Proceedings of the 13th Eurographics conference on Virtual Environments
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Large-area multi-projector displays show significant spatial variation in color, both within a single projector's field of view and across different projectors. Recent research in this area has shown that the color variation is primarily due to luminance variation. Luminance varies within a single projector's field of view, across different brands of projectors and with the variation in projector parameters. Luminance variation is also introduced by overlap between adjacent projectors. On the other hand, chrominance remains constant throughout a projector's field of view and varies little with the change in projector parameters, especially for projectors of the same brand. Hence, matching luminance response of all the pixels of a multi-projector display should help us to achieve photometric uniformity.In this paper, we present a method to do a per channel per pixel luminance matching. Our method consists of a one-time calibration procedure when a luminance attenuation map (LAM) is generated. This LAM is then used to correct any image to achieve photometric uniformity. In the one-time calibration step, we first use a camera to measure the per channel luminance response of a multi-projector display and find the pixel with the most "limited" luminance response. Then, for each projector, we generate a per channel LAM that assigns a weight to every pixel of the projector to scale the luminance response of that pixel to match with the most limited response. This LAM is then used to attenuate any image projected by the projector.This method can be extended to do the image correction in real time on traditional graphics pipeline by using alpha blending and color look-up-tables. To the best of our knowledge, this is the first effort to match luminance across all the pixels of a multi-projector display. Our results show that luminance matching can indeed achieve photometric uniformity.