Patent ID: 6373590
Filing Date: 2002-04-16
Classification: H04N

Abstract:
For generating a composite output image by separately de-skewing constituent skew regions of a composite input image, a method comprising the steps of:A) receiving electrical input signals representing the composite input image; B) providing a preview version of the composite input image, which preview version consists of a plurality of preview pixels; C) identifying as qualifying pixels the preview pixels that meet a set of at least one predetermined pixel-qualification criterion; D) identifying as components connected groups of the qualifying pixels; E) identifying as qualifying components the components that meet a set of at least one predetermined component-qualification criterion; F) determining a skew region of the composite input image from each qualifying component in accordance with a skew-region procedure; G) associating a respective de-skew angle with each skew region, the de-skew angle associated with at least one skew region differing from the se-skew angle associated with at least one other skew region; H) producing as the composite output image an image that includes a respective constituent output sub-image generated from each skew region of the composite input image by rotating that skew region by its de-skew angle; and I) generating electrical signals that represent the composite output image.