A fast clip

日期:2017-08-20 03:39:09 作者:邰勾 阅读:

By Barry Fox in Amsterdam BROADCASTERS should soon be able to spend less time searching for the footage they need. A system developed for image recognition by the Israeli military is being adapted to let film and TV editors search through thousands of hours of TV or video. Called Visionary, the system allows searches on the basis of a whole range of criteria, such as picture content, face recognition or the words that appear in a TV caption or on a shirt worn by, say, a sports star. Its developer, Media Access Technologies of Savion, Israel, says Visionary will soon be able to search for spoken words in soundtracks. “We are not using any defence secrets,” say Itzhak Wilf, the company’s president. “It’s our know-how.” Visionary runs on Windows NT or Silicon Graphics computers. Video footage or even live broadcasts can be fed into the system, which extracts key characteristics and builds up an index that only takes up 2 per cent of the space needed for the original footage. The index can then be searched using logical Boolean requests. For example, keying in “explosion AND White House” might be used to look for the sequence in Independence Day when the White House is blown to pieces by aliens. Visionary can even be used to search for graphical cues such as the background. If you want to find an image that includes a blue sky, for example,