Featured Research

from universities, journals, and other organizations

Technique Developed To Capture Human Movement In 3D

Date:
August 13, 2008
Source:
Plataforma SINC
Summary:
Using two video cameras to capture human movement makes it possible to recognize body movements and display them in three dimension on a computer, according to the journal Multimedia Tools & Applications. The method can be applied to the development of interactive video games in which gestures are made with the hands and feet.

Researchers from the Polytechnic University of Catalonia (UPC) and the University of Lovaina (UCL), in Belgium, have presented a technique that, using two video cameras to capture human movement, makes it possible to recognize body movements and display them in three dimension on a computer, according to the journal Multimedia Tools & Applications.

Related Articles


The method can be applied to the development of interactive video games in which gestures are made with the hands and feet.

Engineer Pedro Correa, from the UCL Telecommunications and Teledetection Laboratory, told SINC that, together with professor Ferran Marquιs's unit at the UPC, they have developed algorithms that tackle the problem of gesture recognition “in the least invasive way possible, since it does not require wearing any special suit or receivers, using a simple video camera to film the body's movement”.

The images filmed identify the person's outline several dozens of times a second, and the data obtained are analyzed by the algorithm invented by the researchers to identify the “crucial points”: head, hands and feet. The “crucial points extraction algorithm” uses the mathematical concept of geodesic distance to calculate the person's extremities, “in other words”, clarifies Correa, “which points are furthest away from the center of gravity, following a path entirely within the outline”.

Once the extremities have been obtained, the outline is analyzed once again to create "morphological skeletons" that help assign a label to each extremity. The five possible labels are head, left hand, right hand, left foot and right foot. Once identified, they are represented with colored dots for tracking in 2 dimensions. This enables the user to analyze the results visually.

To obtain the same information in 3 dimensions, the same steps are taken with an additional camera. This way, the triangulation of the labels extracted in each of the two views makes it possible to obtain the points in a three dimensional space. The front view provides information on the vertical and horizontal positions of the extremities, and the side view provides information on their depth.

The low level of complexity in this system allows it to be applied in real time on any personal computer, with a margin of error of between 4% and 9% in real situations, depending on the context and the quality of the segmentation carried out.

Correa explained that the applications of this technique are “all those that require motion interaction with the computer; that is, from browsing through applications in an operating system (like moving windows and text with hand movements) to interactive aerobic video games, and much more”. The study was also participated in by a Belgian company specializing in real-size video games, which are used, for example, in amusement parks and museums.


Story Source:

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


Cite This Page:

Plataforma SINC. "Technique Developed To Capture Human Movement In 3D." ScienceDaily. ScienceDaily, 13 August 2008. <www.sciencedaily.com/releases/2008/08/080812100331.htm>.
Plataforma SINC. (2008, August 13). Technique Developed To Capture Human Movement In 3D. ScienceDaily. Retrieved January 27, 2015 from www.sciencedaily.com/releases/2008/08/080812100331.htm
Plataforma SINC. "Technique Developed To Capture Human Movement In 3D." ScienceDaily. www.sciencedaily.com/releases/2008/08/080812100331.htm (accessed January 27, 2015).

Share This


More From ScienceDaily



More Computers & Math News

Tuesday, January 27, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

PlayStation Now Smart TV App

PlayStation Now Smart TV App

Rumble (Jan. 27, 2015) — PlayStation Now Smart TV app is coming soon and will be available on both Sony and Samsung HDTV, allowing you to play games without even a counsel! Check out the video for more info. Credit to &apos;booredatwork&apos;. Video provided by Rumble
Powered by NewsLook.com
Cablevision Enters Wi-Fi Phone Fray

Cablevision Enters Wi-Fi Phone Fray

Reuters - Business Video Online (Jan. 26, 2015) — The entry by Cablevision and Google could intensify the already heated price wars for mobile phone service. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
Hector the Robot Mimics a Giant Stick Insect

Hector the Robot Mimics a Giant Stick Insect

Reuters - Innovations Video Online (Jan. 26, 2015) — A robot based on a stick insect can navigate difficult terrain autonomously and adapt to its surroundings. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Scientists Model Flying, Walking Drone After Vampire Bats

Scientists Model Flying, Walking Drone After Vampire Bats

Buzz60 (Jan. 26, 2015) — Swiss scientists build a new drone that can both fly and walk, modeling it after the movements of common vampire bats. Jen Markham (@jenmarkham) has the story. Video provided by Buzz60
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:

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

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