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Title: Software to detect fake photos
Source:
Boing Boing
URL Source: http://boingboing.net/
Published: Apr 6, 2007
Author: Boing Boing
Post Date: 2007-04-06 19:46:52 by Zipporah
Keywords: None
Views: 171
Comments: 4
When the Associated Press thinks that a photo may have been manipulated, they sometimes call Hany Farid, a Dartmouth College computer scientist. As previously reported on BB, Farid has spent several years developing a suite of software that helps automate the detection of manipulation in digital photos. For example, it looks for pixel repetitions, analyzes shadows, and examines the pupils of people in photos to determine if they were composited into the image. From Science News: Software to detect fake photos
Link
"The eyes are a partial mirror into the world in which you're photographed," Farid says. If there are two white dots in each eye, there had to have been two separate light sources. So, if a photo shows two dots in one person's eyes and only one dot in another person's eyes, it must have been spliced together from two different originals.
Also, the color of the light determines the dots' precise shade of white. A composite image from different photographs may have shades that vary from person to person...
"This is an arms race," Farid says. "I can already tell you how it's going to end: We're going to lose..."
Previously on BB: • F is for Photoshopped Link • Time makes Reagan cry with Photoshop Link
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#1. To: Zipporah (#0)
nice
WASHINGTON, April 6 /PRNewswire-USNewswire/ -- With only a few days before Easter Sunday, Joan Claybrook, president of Public Citizen, urges family cooks to assess their freestanding stoves for a potential holiday hazard and report any injuries or deaths caused by ranges tipping over to a toll-free number. "For over two decades, we have not stopped the preventable death and injury due to killer stoves," says Joan Claybrook. "There have been over 100 reported cases of death and injury from scalding and burns from hot foods and liquids spilling from stove top, and from the weight crushing anyone in the path of the tipping ranges. Given the fact that 15 to 20 million of these incorrectly installed appliances are currently in U.S. homes, we believe the number of people maimed or killed by ranges tipping over is much greater."
#3. To: Dakmar (#2)
I've never heard of such stories.
Top • Page Up • Full Thread • Page Down • Bottom/Latest"The eyes are a partial mirror into the world in which you're photographed," Farid says. If there are two white dots in each eye, there had to have been two separate light sources. So, if a photo shows two dots in one person's eyes and only one dot in another person's eyes, it must have been spliced together from two different originals.
#2. To: robin, Zipporah (#1)
Replies to Comment # 2. Retailers Not Installing Simple Safety Devices to Prevent Ranges From Tipping Over and Causing Severe Injuries and Deaths
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