Patent ID: 6195474
Filing Date: 2001-02-27
Classification: G06T

Abstract:
A method of image dependent digitizing of small format films, processing the resultant digital images, and rendering said digital images for output presentation, comprising the steps of:in a pre-scan of a flat bed digitizing scanner having a platen, digitizing small format films placed on said platen, using an opaque exposure template having apertures in which the films are placed, or other means to surround the films with appropriate material to reduce flare;displaying the pre-scanned images on a display and using an image selection system to generate a bounding rectangle on the display to select pre-scanned images to be further processed and digitized;automatically determining exposure adjustments by histogram analysis of a smoothed histogram of each said selected pre-scanned images for digitizing said selected pre-scanned images in another scan;processing each of said selected digitized images to generate an enhanced image for presentation by an output device;calculating original digital authentication data from said digital images that is unique to the original small format films and associating such data with the digital images;at the time of displaying an original small format digitized film, determining digital authentication data for said film; andcomparing the digital authentication data of a film to be displayed with the original digital authentication data associated with the digital image to authenticate the original image.