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Forming, with the aid of an overview image, a composite image from a mosaic of images

  • US 5,187,754 A
  • Filed: 04/30/1991
  • Issued: 02/16/1993
  • Est. Priority Date: 04/30/1991
  • Status: Expired due to Term
First Claim
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1. A method for generating a composite image, proceeding from a less-detailed overview image of a relatively large field of view and from more detailed images of relatively small fields of view, said method comprising the steps of:

  • combining the more detailed images to form a mosaiced detailed image in a common spatial reference frame with the overview image;

    generating digitized representations of the less detailed image and the mosaiced image in electrical signal form of each of said images, each as regularly sampled in two orthogonal dimensions and referred to a common spatial frame reference;

    low-pass spatially filtering the digitized representations of said overview image to generate in electrical signal form a digitized low-spatial-frequency response for said composite image;

    high-pass spatially filtering the digitized representations of the regular sampling of said mosaiced image, to generate in electrical signal form digitized high-spatial-frequency response for said composite image; and

    combining said high-spatial-frequency and low-spatial-frequency responses for said composite image.

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