Iowa Photographs

Photographs

Negative emotional photographs are identified more slowly than positive photographs.

In three experiments, we investigated whether the emotional valence of a photograph influenced the amount of time required to initially identify the contents of the image. In Experiment 1, participants saw a slideshow consisting of positive, neutral, and negative photographs that were balanced for arousal. During the slideshow, presentation time was substantially limited (60 ms), and the images...

Daily Iowan (Iowa City, Iowa), 1970-03-27

Senators·at·larll' and their totll. Ir.l' Doug Caste.l, AI, Wltlrl", 1414; Llrry Hilt, A2, Sioux City, 1,693; P.tl Arln, AI. , Pocohontll, I,S92; Blrblra Wi ... , AI, La~al\., til., 1,508; T • d Polhla, A2, , AmlS, 1,948; and Randlll StophtnHn, A3, Oes MaiMs, 1,446. . Liberal Arts Senators: BU! Bloomquist, A'J" Des Moines, 1,~13; Dean OlsoD, A2, , WebsLer City, 1,347; Dan 8atoriU$, AI, Normal, ...

Daily Iowan (Iowa City, Iowa), 1949-02-11

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Distinguishing paintings from photographs

We addressed the problem of automatically differentiating photographs of real scenes from photographs of paintings. We found that photographs differ from paintings in their color, edge, and texture properties. Based on these features, we trained and tested a classifier on a database of 6000 paintings and 6000 photographs. Using single features results in 70–80% correct discrimination performanc...