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August 8, 2007
Find similar images
Find similar images: BBC describes a project to make image-editing even more high-level and abstracted -- feed it a photo and the service examines current public image databases to find matches, which can then be used to enhance the original photo. In the example given, a photo of a seaside town was partially blocked by buildings -- similar images were found in the database -- the original photo could then have its buildings disappear. "The algorithm developed by Mr Lalonde and his colleagues at Carnegie Mellon and Microsoft Research analyses scenes to find out the orientation of objects and the sources of light in a scene. 'We use the height of the people in the image to estimate the height of the camera used to take the picture,' he said. The light sources in a scene are worked out by looking at the distribution of colour shades within three broad regions, ground, vertical planes and sky, in the image. With knowledge about the position, pitch and height of the camera and light sources the algorithm then looks for images in the clip art database that were taken from similar positions and with similar pixel heights...."
Posted by JohnDowdell at August 8, 2007 11:21 AM
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