Patent Document ID: 5446800
Application ID: 08259198
Patent Status: 1

Claim One:
1. An apparatus for generating an image representing a flow of a substance in a scanned area, the image having a plurality of image subregions, the scanned area having a plurality of scanned sections, the apparatus comprising: a scanner for scanning said scanned area to produce a plurality of scanned values, said plurality of scanned values including a scanned value for each scanned section of said plurality of scanned sections, said scanned value for each scanned section having an amplitude representing said flow of said substance in said scanned section; a processing circuit operatively coupled to said scanner, said processing circuit receiving said plurality of scanned values from said scanner, said processing circuit generating a plurality of spatial derivative values based on said plurality of scanned values, said processing circuit determining a color value for each image subregion of said plurality of image subregions, said color value varying in proportion to a corresponding composite value, wherein one component of said corresponding composite value is a spatial derivative value of said plurality of spatial derivative values; and a display unit operatively coupled to said processing circuit, said display unit receiving said color value for each image subregion from said processing circuit, said display unit displaying each image subregion responsive to said color value.