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news, links // 2011.12.02 08:02:57 [hh]

"Photoshopped" or not? Bild-Manipulationen aufdecken

Die US-Wissenschaftler Hany Farid und Eric Kee (Dartmouth College, New Hampshire) haben in ihrem Artikel "A perceptual metric for photo retouching" ein Verfahren vorgestellt, mit dessen Hilfe eine Software die Retusche von Bildern durch Vergleich von Original und Endresultat auf einer Skala zwischen 1 und 5 bewerten kann. Jetzt könnte endlich der Grad der Manipulation von Bildern bemessen werden. Einige Länder (darunter Großbritannien) erwägen bereits eine Kennzeichnungspflicht.

Aus dem Abstract: "In recent years, advertisers and magazine editors have been widely criticized for taking digital photo retouching to an extreme. Impossibly thin, tall, and wrinkle- and blemish-free models are routinely splashed onto billboards, advertisements, and magazine covers. The ubiquity of these unrealistic and highly idealized images has been linked to eating disorders and body image dissatisfaction in men, women, and children. In response, several countries have considered legislating the labeling of retouched photos. We describe a quantitative and perceptually meaningful metric of photo retouching. Photographs are rated on the degree to which they have been digitally altered by explicitly modeling and estimating geometric and photometric changes. This metric correlates well with perceptual judgments of photo retouching and can be used to objectively judge by how much a retouched photo has strayed from reality."

Ein Artikel der "New York Times" stellt die Arbeit der beiden Forscher vor.

Beispiele: www.cs.dartmouth.edu/ farid/ downloads/ publications/ pnas11

 

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