Featured Research

from universities, journals, and other organizations

Smart search engines for news videos

Date:
January 7, 2013
Source:
Fraunhofer-Gesellschaft
Summary:
Searching for video recordings regularly pushes search engines to their limit. The truth of the matter is that purely automatic algorithms are not enough; user knowledge has to be harnessed, too. Now, researchers are making automated engines smarter.

NewsHistory makes the most of user knowledge, searching through video databases to find video sequences with identical content.
Credit: Fraunhofer IDMT

Searching for video recordings regularly pushes search engines to their limit. The truth of the matter is that purely automatic algorithms are not enough; user knowledge has to be harnessed, too. Now, researchers are making automated engines smarter.

Anyone who has visited one of the big online video portals or TV broadcasters’ media libraries to search for a video clip is already familiar with the search engines tasked with seeking out and flagging video footage. However, these engines have their weaknesses. Their results are based on automatic search algorithms that often go by text-based information alone. Although they can be used to locate and identify videos, a comparison of individual sequences is still very difficult. To make search engines even smarter, the Fraunhofer Institute for Digital Media Technology IDMT in Ilmenau has developed a piece of software called “NewsHistory” that will now make full use of user knowledge as well. Researchers will be presenting an initial demonstration version of the smart video search engine at the CeBIT trade fair in Hannover.

Technology learns from users

“NewsHistory provides users with search algorithms, a data model and a web-based user interface so that they can locate identical sequences within various news videos,” explains Patrick Aichroth from Fraunhofer IDMT. He is responsible for coordinating the institute’s R&D work within the EU’s CUbRIK project. Here, researchers are harnessing user knowledge to optimize and extend the capabilities of automated analysis techniques. “The search engine learns from each individual user, allowing it to keep improving search results. Not only does this improve the quality of results, but the resources needed to undertake the analysis are also cut down,” Aichroth continues.

NewsHistory allows each user to add additional information to the results generated by the search engine, including production and broadcast date, sources and keywords for videos. It is also possible to rate the results. Finally, the user’s search itself is a source of information, providing data that is incorporated into the search engine; the metadata of a newly uploaded video, for instance, passes into the database.

“Comparing digital video data online or within video databases is very complex,” explains Christian Weigel from the Audio-Visual Systems research group at the IDMT. “Videos that share the same content have for the most part been edited, meaning that they are scaled and encoded in a variety of formats. Also, search engines are often unable to distinguish images cropped from a larger picture, lower thirds or the zoom shots so popular with US news channels.”

The demonstration version being presented at CeBIT will investigate how a selection of TV channels have made use of film footage, changed its form and broadcast it. The user interface displays commonalities and appraises them in graphic form. The search itself is conducted either by inputting text or by directly uploading individual video sequences. The researchers’ aim is to make the software sufficiently robust that it could also be used in the future to compare the multimedia content found on big online media portals. The scientists do not imagine archivists or journalists will be the only users. “NewsHistory is of particular interest to media and market researchers, say if they want to assess the televised political duels coming up this year,” concludes Weigel.


Story Source:

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


Cite This Page:

Fraunhofer-Gesellschaft. "Smart search engines for news videos." ScienceDaily. ScienceDaily, 7 January 2013. <www.sciencedaily.com/releases/2013/01/130107095738.htm>.
Fraunhofer-Gesellschaft. (2013, January 7). Smart search engines for news videos. ScienceDaily. Retrieved April 16, 2014 from www.sciencedaily.com/releases/2013/01/130107095738.htm
Fraunhofer-Gesellschaft. "Smart search engines for news videos." ScienceDaily. www.sciencedaily.com/releases/2013/01/130107095738.htm (accessed April 16, 2014).

Share This



More Computers & Math News

Wednesday, April 16, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Google Patents Contact Lens Cameras; Internet Is Wary

Google Patents Contact Lens Cameras; Internet Is Wary

Newsy (Apr. 15, 2014) Google has filed for a patent to develop contact lenses capable of taking photos. The company describes possible benefits to blind people. Video provided by Newsy
Powered by NewsLook.com
NYPD Ends Muslim Surveillance Program

NYPD Ends Muslim Surveillance Program

AP (Apr. 15, 2014) The New York City Police Department has ended a program that once kept tabs on the city's muslim population. (April 15) Video provided by AP
Powered by NewsLook.com
Images Of Rumored Amazon Smartphone Leaked

Images Of Rumored Amazon Smartphone Leaked

Newsy (Apr. 15, 2014) BGR has leaked images of what could be Amazon's smartphone. The outlet's been right about Amazon leaks before. Sources expect an announcement in June. Video provided by Newsy
Powered by NewsLook.com
The Walking, Talking Oil-Drigging Rig

The Walking, Talking Oil-Drigging Rig

Reuters - Business Video Online (Apr. 15, 2014) Pennsylvania-based Schramm is incorporating modern technology in its next generation oil-drigging rigs, making them smaller, safer and smarter. Ernest Scheyder reports. Video provided by Reuters
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