Process of identifying the sky in an image and an image obtained using this process

摘要

The invention relates to a process of identification of sky in a digital image made up of a set of points that can be located in the plane of the image. Each point of an image being associated with a color and a brightness. According to the invention process the image is filtered and the filtered image is then segmented into several portions. A mosaic image is then produced for which a color is associated with each portion. Portions having at least one point on the image edges are then selected and identified as sky. The portions have colors varying within a color range containing at least blue colors.