Researchers Teach Computers To Search For Photos Based On Their Contents

A pair of Penn State researchers has developed a statistical approach, called Automatic Linguistic Indexing of Pictures in Real-Time (ALIPR), that one day could make it easier to search the Internet for photographs. The public can participate in improving ALIPR’s accuracy by visiting a designated Web site, uploading photographs, and evaluating whether the keywords that ALIPR uses to describe the photographs are appropriate. ALIPR works by teaching computers to recognize the contents of photographs, such as buildings, people, or landscapes, rather than by searching for keywords in the surrounding text, as is done with most current image-retrieval systems.