Featured Research

from universities, journals, and other organizations

Video game technology: Motion tracking technology is extremely precise, inexpensive with minimal lag

Date:
October 7, 2013
Source:
Carnegie Mellon University
Summary:
Researchers have devised a motion tracking technology that could eliminate much of the annoying lag that occurs in existing video game systems that use motion tracking, while also being extremely precise and highly affordable.

The top image of a flight simulation video game reflects one application for Lumitrack, which enables high-speed, high-precision tracking by projecting a barcode-like pattern, or m-sequence, over an area (pictured above). A sensor can determine its position based on the unique portion of the m-sequence pattern it can detect.
Credit: Image courtesy of Carnegie Mellon University

Researchers at Carnegie Mellon University and Disney Research Pittsburgh have devised a motion tracking technology that could eliminate much of the annoying lag that occurs in existing video game systems that use motion tracking, while also being extremely precise and highly affordable.

Called Lumitrack, the technology has two components -- projectors and sensors. A structured pattern, which looks something like a very large barcode, is projected over the area to be tracked. Sensor units, either near the projector or on the person or object being tracked, can then quickly and precisely locate movements anywhere in that area.

"What Lumitrack brings to the table is, first, low latency," said Robert Xiao, a Ph.D. student in Carnegie Mellon's Human-Computer Interaction Institute (HCII). "Motion tracking has added a compelling dimension to popular game systems, but there's always a lag between the player's movements and the movements of the avatar in the game. Lumitrack is substantially faster than these consumer systems, with near real-time response."

Xiao said Lumitrack also is extremely precise, with sub-millimeter accuracy. Moreover, this performance is achieved at low cost. The sensors require little power and would be inexpensive to assemble in volume. The components could even be integrated into mobile devices, such as smartphones.

Xiao and his collaborators will present their findings at UIST 2013, the Association for Computing Machinery's Symposium on User Interface Software and Technology, Oct. 8-11 in St. Andrews, Scotland. Scott Hudson, professor of HCII, and Chris Harrison, a recent Ph.D. graduate of the HCII who will be joining the faculty next year, are co-authors, as are Disney Research Pittsburgh's Ivan Poupyrev, director of the Interactions Group, and Karl Willis.

Many approaches exist for tracking human motion, including expensive, highly precise systems used to create computer-generated imagery (CGI) for films. Though Lumitrack's developers have targeted games as an initial application, the technology's combination of low latency, high precision and low cost make it suitable for many applications, including CGI and human-robot interaction.

"We think the core technology is potentially transformative and that you could think of many more things to do with it besides games," Poupyrev said.

A key to Lumitrack is the structured pattern that is projected over the tracking area. Called a binary m-sequence, the series of bars encodes a series of bits in which every sequence of seven bits appears only once. A simple optical sensor can thus quickly determine where it is based on which part of the sequence it sees. When two m-sequences are projected at right angles to each other, the sensor can determine its position in two dimensions; when multiple sensors are used, 3D motion tracking is possible.


Story Source:

The above story is based on materials provided by Carnegie Mellon University. Note: Materials may be edited for content and length.


Cite This Page:

Carnegie Mellon University. "Video game technology: Motion tracking technology is extremely precise, inexpensive with minimal lag." ScienceDaily. ScienceDaily, 7 October 2013. <www.sciencedaily.com/releases/2013/10/131007112111.htm>.
Carnegie Mellon University. (2013, October 7). Video game technology: Motion tracking technology is extremely precise, inexpensive with minimal lag. ScienceDaily. Retrieved July 28, 2014 from www.sciencedaily.com/releases/2013/10/131007112111.htm
Carnegie Mellon University. "Video game technology: Motion tracking technology is extremely precise, inexpensive with minimal lag." ScienceDaily. www.sciencedaily.com/releases/2013/10/131007112111.htm (accessed July 28, 2014).

Share This




More Computers & Math News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Teen's Phone Ignites Under Her Pillow; How Real Is The Risk?

Teen's Phone Ignites Under Her Pillow; How Real Is The Risk?

Newsy (July 28, 2014) A Texas teen's Samsung phone apparently ignited while she slept, but what was the real problem here? Video provided by Newsy
Powered by NewsLook.com
Google's Next Frontier: The Human Body

Google's Next Frontier: The Human Body

Newsy (July 27, 2014) Google is collecting genetic and molecular information to paint a picture of the perfectly healthy human. Video provided by Newsy
Powered by NewsLook.com
Cellphone Unlocking Bill Clears U.S. House, Heads to Obama

Cellphone Unlocking Bill Clears U.S. House, Heads to Obama

Reuters - US Online Video (July 27, 2014) Congress gets rid of pesky law that made it illegal to "unlock" mobile phones without permission, giving consumers the option to use the same phone on a competitor's wireless network. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com
Congress OKs Unlocking Phones From Carriers

Congress OKs Unlocking Phones From Carriers

Newsy (July 26, 2014) A bill legalizing "unlocking," or untethering a phone from its default wireless carrier, has passed Congress and is expected to be signed into law. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins