Featured Research

from universities, journals, and other organizations

Novel Watermarking Process Protects Video Producers And Purchasers

Date:
July 10, 1998
Source:
University Of Illinois At Urbana-Champaign
Summary:
With the rapid growth of multimedia systems, problems associated with multimedia security and copyright protection have become major issues. Researchers at the University of Illinois have developed a watermarking process that protects both the original owner and legitimate customers of copyright multimedia data.

CHAMPAIGN, Ill. -- With the rapid growth of multimedia systems, problems associated with multimedia security and copyright protection have become major issues. Researchers at the University of Illinois have developed a watermarking process that protects both the original owner and legitimate customers of copyright multimedia data.

"A number of digital watermarking techniques have been proposed in recent years, but none has fully addressed the problems of proving rightful ownership or protecting a customer's right to use the material," said Klara Nahrstedt, a U. of I. professor of computer science.

"The purpose of a watermark is to protect the owner's copyright," Nahrstedt said. "Without a careful design and proper requirements on the watermark, however, an attacker can easily manipulate the watermarked material and confuse rightful ownership."

To create a tamper-proof watermark, Nahrstedt and graduate student Lintian Qiao developed a watermark construction algorithm that combines a standard encryption function with part of the original video image. Because the resulting watermark is dependent upon both the original material and the encryption function, rightful ownership is easily determined.

"To prove ownership, both the original material and the watermark construction algorithm are required for the verification process," Nahrstedt said. "Therefore, manipulated watermarks are easy to identify and discredit."

The researchers' watermarking process also can be used to protect the rights of legitimate customers, an important feature not found in other watermarking techniques.

"Currently, sellers of video information have complete control over the watermarking procedure, and customers have no way to prove their rights to use the watermarked data," Nahrstedt said. "To provide proper protection to customers, the watermarking framework needs protocols that involve both owners and customers."

One such protocol, designed by Nahrstedt and Qiao, encodes a customer's unique identification into the owner's watermark at the point of purchase. This creates a unique watermark for each purchase, and ensures that only legal customers can prove their rights to use the material.

"The ideal watermark should be invisible, create minimal distortion and be extremely difficult to remove," Nahrstedt said. "The integration of our watermarking scheme with the customer's right protocols creates a robust framework that resolves rightful ownership and protects customer's rights."

Nahrstedt and Qiao described their watermarking process at the IEEE International Conference on Multimedia Computing and Systems, held June 28 through July 1, in Austin, Texas.


Story Source:

The above story is based on materials provided by University Of Illinois At Urbana-Champaign. Note: Materials may be edited for content and length.


Cite This Page:

University Of Illinois At Urbana-Champaign. "Novel Watermarking Process Protects Video Producers And Purchasers." ScienceDaily. ScienceDaily, 10 July 1998. <www.sciencedaily.com/releases/1998/07/980710080935.htm>.
University Of Illinois At Urbana-Champaign. (1998, July 10). Novel Watermarking Process Protects Video Producers And Purchasers. ScienceDaily. Retrieved October 22, 2014 from www.sciencedaily.com/releases/1998/07/980710080935.htm
University Of Illinois At Urbana-Champaign. "Novel Watermarking Process Protects Video Producers And Purchasers." ScienceDaily. www.sciencedaily.com/releases/1998/07/980710080935.htm (accessed October 22, 2014).

Share This



More Computers & Math News

Wednesday, October 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Thanks, Marty McFly! Hoverboards Could Be Coming In 2015

Thanks, Marty McFly! Hoverboards Could Be Coming In 2015

Newsy (Oct. 21, 2014) If you've ever watched "Back to the Future Part II" and wanted to get your hands on a hoverboard, well, you might soon be in luck. Video provided by Newsy
Powered by NewsLook.com
Robots to Fly Planes Where Humans Can't

Robots to Fly Planes Where Humans Can't

Reuters - Innovations Video Online (Oct. 21, 2014) Researchers in South Korea are developing a robotic pilot that could potentially replace humans in the cockpit. Unlike drones and autopilot programs which are configured for specific aircraft, the robots' humanoid design will allow it to fly any type of plane with no additional sensors. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com
Japanese Scientists Unveil Floating 3D Projection

Japanese Scientists Unveil Floating 3D Projection

Reuters - Innovations Video Online (Oct. 20, 2014) Scientists in Tokyo have demonstrated what they say is the world's first 3D projection that floats in mid air. A laser that fires a pulse up to a thousand times a second superheats molecules in the air, creating a spark which can be guided to certain points in the air to shape what the human eye perceives as an image. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Apple Enters Mobile Payment Business

Apple Enters Mobile Payment Business

AP (Oct. 20, 2014) Apple is making a strategic bet with the launch of Apple Pay, the mobile pay service aimed at turning your iPhone into your wallet. (Oct. 20) Video provided by AP
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