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Pluribus: Scalable Multi-Projector Displays

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Podcast Description

Pluribus, latin for many. It is a HP system, designed to take many projector displays, and combine them into one image, with overlapping projectors displaying different parts of a single image. It means that a selection of very cheap, small projectors can at lower cost, and lower power consumption, produce a display equivalent to the largest, most expensive projectors on the planet. It allows things like CAVE displays, economically.

This brief, half-hour talk, presents HP's general framework for the modeling and optimization of scalable multi-projector displays. Based on this framework, they derive algorithms that can optimize the visual quality of any arbitrary combination of projectors, of different types and manufacturers, without manual assistance.

When the projectors are tiled, the demonstration shows that the framework automatically produces blending maps that outperform previous state-of-the-art projector blending methods. When all the projectors are superimposed, the framework can produce high-resolution images beyond the Nyquist resolution limits of component projectors.

When a combination of tiled and superimposed projectors are deployed, the same framework harnesses the best features of both tiled and superimposed multi-projector projection paradigms. The framework creates for the first time a new unified paradigm that is agnostic to a particular configuration of projectors yet robustly optimizes for the brightness, contrast, and resolution of that configuration.

Finally, the talkdemonstrates high resolution video at real-time interactive frame rates, even with many projector systems working together.


"It takes an experienced technician about six hours to perfectly line up just two projectors"

"You don't want a human in the loop"

"Typically, we can drive twelve projectors out of a single PC"

"Wouldn't it be great if you could watch a DVD and play a game at the same time?"


Presenter Biographies

During his seven year tenure at HP Labs, Niranjan Damera-Venkata made key technology contributions to HP's foray into commercial photofinishing with the Indigo press, was a principal inventor of HPs Wobulation technology that is widely used for resolution enhancement in DLP RPTVs, and is a co-inventor (with Nelson Chang) of HP's Pluribus multi-projector display technology.

Niranjan's academic background includes a BS degree in Electronics and Communications Engineering from the University of Madras (INDIA), MS and PhD degrees in Electrical and Computer Engineering from the University of Texas at Austin, and an MS in Management Science and Engineering from Stanford University.

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Audio file available? Yes

Size: 13.9mb

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Size: 59.2 mb

Duration: 24 minutes

Podcast viewing notes

Additional Research Links

Pluribus at HP

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