Microsoft Kinect Performance
Metrics
CSE 60641 – Graduate Operating
Systems Final Presentation
12/13/2011
CSE 60641 – Microsoft Kinect Performance
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Aaron Huus
Ben Bockstege
Project Overview
• Problem
o
Viability for WiiHabilitaiton
 Hardware Requirements
 FPS fast enough not to lose
data
 Write to disk speed based
on OS
 If there is a bottleneck,
where does it exist?
• Libraries and drivers
from PrimeSense
o
o
o
OpenNI
NITE
PrimeSensor
• Operating Systems
o
o
o
Windows 7
Ubuntu 11.10
Mac OS X 10.6
CSE 60641 – Microsoft Kinect Performance
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Aaron Huus
Ben Bockstege
Demo
CSE 60641 – Microsoft Kinect Performance
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Ben Bockstege
Experimental Methodology
• One User Testing:
o
o
o
o
o
o
User enters at 5
User assumes pose at 15
User begins movement at 25
User returns to pose at 35
User leaves at 45
Stop at 50
• Movement Phase
o
o
o
o
• Two User Testing:
o
o
o
o
o
o
o
o
User A enters at 5
User B enters at 10
User A assumes pose at 20
User A begins movement at 30
User A returns to pose at 40
User B leaves at 45
User A leaves at 50
Stop at 55
Turn full circle
Drop arms to side, then back to pose
Push out with right hand, return
Push out with left hand, return
CSE 60641 – Microsoft Kinect Performance
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Aaron Huus
Ben Bockstege
Predicted Results
User
Enters
Skeleton
Found
Movement
User
Leaves
CSE 60641 – Microsoft Kinect Performance
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Aaron Huus
Ben Bockstege
Workstations
• Windows 7 Professional SP 1 x64
o CPU: Intel Core 2 Duo P8400 2.26 GHz
o RAM: 4 GB
o Graphics Card: Mobile Intel GMA 4500MHD
 32 MB
• Ubuntu 11.10 x86
o CPU: AMD Athlon 5200 Dual Core 2.70 GHz
o RAM: 2GB
o Graphics Card: NVidia GeForce 8400gs
 512 MB
• Mac OS X 10.6 x64
o CPU: Intel Core 2 Duo 2.4 GHz
o RAM: 4 GB
o Graphics Card: ATI Radeon HD 2400
 128 MB
CSE 60641 – Microsoft Kinect Performance
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Aaron Huus
Ben Bockstege
Write to Disk Speed
CSE 60641 – Microsoft Kinect Performance
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Ben Bockstege
Windows 7 One User
• Reason for Trial 1 reduced performance possibly result of other
processes running at same time.
• Dip at 53000 likely due to system looking for user and realizing the
user has left
• Initial dip at 1000 to 3000 present across all trials. Likely a result of
opening excel file and writing data.
CSE 60641 – Microsoft Kinect Performance
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Aaron Huus
Ben Bockstege
Windows 7 One User
CSE 60641 – Microsoft Kinect Performance
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Ben Bockstege
Windows 7 Two User
• Initial dip at 1000 to 3000 present across all trials. Likely a
result of opening excel file and writing data.
• Dips starting at 52500 across all trials likely a result of the
system losing track of User B then User A and removing them
from list of users.
CSE 60641 – Microsoft Kinect Performance
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Aaron Huus
Ben Bockstege
Windows 7 Two User
CSE 60641 – Microsoft Kinect Performance
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Ben Bockstege
Windows 7 Users Comparisons
CSE 60641 – Microsoft Kinect Performance
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Ben Bockstege
Ubuntu 11.10 One User
• Spontaneous decreases in FPS
• Decreases at 45000 may be due to system
searching for user
CSE 60641 – Microsoft Kinect Performance
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Ben Bockstege
Ubuntu 11.10 One User
CSE 60641 – Microsoft Kinect Performance
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Ben Bockstege
Ubuntu 11.10 Two User
• Spontaneous decreases in FPS
• Decreases at 45000 may be due to system
searching for user
CSE 60641 – Microsoft Kinect Performance
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Aaron Huus
Ben Bockstege
Ubuntu 11.10 Two User
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Ben Bockstege
Ubuntu Users Comparisons
CSE 60641 – Microsoft Kinect Performance
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Ben Bockstege
Mac OS X One User
• Noisy
• Spontaneous increases in FPS
• Possibly unstable SDK or general issues with mac
CSE 60641 – Microsoft Kinect Performance
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Ben Bockstege
Mac OS X One User
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Ben Bockstege
Mac OS X Two User
• Noisy
• Spontaneous increases in FPS
• Possibly unstable SDK or general issues with mac
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Ben Bockstege
Mac OS X Two User
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Ben Bockstege
Mac OS X Users Comparisons
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Ben Bockstege
Operating Systems Comparison
CSE 60641 – Microsoft Kinect Performance
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Aaron Huus
Ben Bockstege
Conclusions
• Windows lower FPS
o Poor graphics memory
o Write to disk speed
o OpenNI vs Microsoft SDK
• Ubuntu had the best overall results
o Easiest to implement
o Comparable write to disk speed
o Good recovery to original steady state
• Mac OS X and OpenNI are not fully compatible yet
o Only unstable release
o Has a lot of dependent components
o Previous Kinect development makes it difficult
CSE 60641 – Microsoft Kinect Performance
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Aaron Huus
Ben Bockstege
Conclusions
• Need a decent video card (~128 MB)
• FPS performance equal if no display
• Lower FPS may result due to slow write to disk speed
• 30 FPS bottleneck at Kinect
CSE 60641 – Microsoft Kinect Performance
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Aaron Huus
Ben Bockstege
Questions?
CSE 60641 – Microsoft Kinect Performance
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Aaron Huus
Ben Bockstege