Patent ID: 6947591
Filing Date: 2005-09-20
Classification: G06K,G06T

Abstract:
1. A process of identifying a sky in a digital image, the digital image being bounded by edges and comprising a set of image points that are locatable in a plane of said image, each image point being associated with a color and brightness, the color being defined by chromatic components that are locatable in a color space, the brightness being determinable from said chromatic components, wherein the process comprises the steps of: filtering the image; segmenting the filtered image into several portions, so that each portion corresponds to a set of connected image points having a substantially uniform color; producing a mosaic image from the segmented image for which a color is associated with each portion, said color being representative of said portion; selecting portions having at least one point on the image edges; and identifying portions having colors varying within a color range containing blue colors as sky.