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Seamless Scalable Displays - Using NVIDIA Warp + Intensity API Rajeev Surati Ph.D.
President Scalable Display Technologies raj@scalabledisplay.com
Agenda
What Scalable Display Technologies Does
Building Blocks of a Blended Scalable Display
Why the Warp and Blend API is GREAT!
Basic Architectures of Systems
Case Studies
Other Applications
Questions
What Scalable Display Technologies Does
Worlds Largest and Best Provider of Autocalibration
Software for Easy Setup and Automatic Recalibration of
Multi-Projector Displays
Over 80,000 licenses of our software sold
— Several Companies OEM our software
Have been encouraging and working hand in hand with
NVIDIA to add the Warp and Blend API and are shipping
products with it.
Company was founded In 2004 based on work done at MIT
based on my PhD thesis work from the Mid 1990s which
created the Projector Camera Field.
The Building Blocks of a “Blended” Scalable Display
Scalable’s three step process
• Automated software process to re-calibrate multi-projector displays
• “Camera based” technique
Warp + Intensity + Color = blend
jashd
Implementation: “Scalable Mesh File”
Scalable produces “instruction set” for warp, blend & color match
In case of Quadro we use Warp and Blend API in GPU
Step 1: “Warp” data
Step 2: Intensity Correct Pixels
Step 3: Match White Point of Pixels
• Two techniques: - Pixel shader
• On GPU or ASIC – Per pixel
- Adjust projector values • “Flat field”
Two Basic Architectures
There are two Architectures
— Image Generator (Distributed) using Perspective Rendering
Normally a warping box or Application dependent SDK implementation is used
here
— Large Desktops from a single Machine being warped, wall papering
a surface.
Products
Scalable Display Manager
— Delivers the “SMF” to dedicated Warp/Blend Hardware, Projectors,
Image Generator (IG) software, and now Quadro
ScalableDesktop
— Delivers “SMF” for warp & blend of a Windows® desktop
Why Warp and Blend API is GREAT Replaces ($10,000 warping Box per projector + GPU) with just the
GPU!
Massive Simplification of Visualization Systems
— Elimination of Many Points of Failures
Cables
Warping Boxes
Provides Access to WHOLE Frame Buffer for Warping
Makes Achieving Square Pixels Easy and Arbitrary Sized Desktops
Easy
Provides “Zero” Latency Application Independence
Enables a Pricepoint for Ultra High Resolution Displays that
enables a whole new Mid-End Visualization Market
Case Study:MIT Lincoln Labs Decision Room
Case Study:MIT Lincoln Labs Decision Room
Case Study: MIT Lincoln Lab Decision Room
• Borderless Display
• Touch Enabled
• Immersive
• Collaborative Space
1st NVIDIA Warp and Blend
Deployment
2 Quadroplex 7000s
1 Tesla Card for Image
Processing
NASA/AFRL Operational Based Visual Assessment Dome:
At least 6 4k projectors
Each 4k driven by a Quadroplex onto a Dome Section
— Each Quadroplex is Genlocked to the others
— Since each card (there are 2 in each quadroplex) generates the
same output, the culling problem with special NVIDIA enabled
feature to specifying the culling frustum for each card.
Scalable Picked for Ability to Provide Most accurate and
uniform Calibration in Industry.
Digital Signage
(7) projectors,
(3) PCs,
(6) 500 Lumen
“Picos”, 1 PC,
Stacked &
Tiled
Interactive Conference Rooms and Classrooms
(3) projectors
(1) PC
(3) Cameras
(2) projectors
(1) PC
(1) Camera
3.5 Megapixels
Single Quadro
Card and 2
projectors
Museums and Exhibits
(6) projectors,
(1) Media Server
(7) projectors,
(2) PCs,
Military Simulation
(3) 4K projectors,
(6) Image Generator PCs
(6) projectors,
(6) Image Generator PCs
Commercial Simulation
(2) projectors,
(1) PC
(5) projectors,
(5) PC
Scientific Visualization
(50) projectors
(25) Quadros
(3) Cameras
Working on 140 Megapixel
Next Generation Curved
Stereoscopic 3D Cave
Utilizing Quadro Cards
Commercial Visualization
(16) projectors
(1) PC
(2) QuadroPlex
(1) Cameras
Immersive Conference Rooms
(2) projectors
(1) Quadro 5000
(1) Camera
(6) Projectors 2 QuadroPlex
(4) Cameras
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