×

Detection of highlighted regions

  • US 5,048,109 A
  • Filed: 12/08/1989
  • Issued: 09/10/1991
  • Est. Priority Date: 12/08/1989
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for processing a first image in a digital computer to identify a location of highlight regions in said first image, said first image comprising mark regions having a first grayscale, a highlighted portion of said marks at least partially surrounded by said highlight regions, said highlight regions having a second grayscale, comprising the steps of:

  • a) inputting a grayscale image of said first image;

    b) identifying a location of said portion of said marks in said first image using said grayscale image, said step of identifying a location further comprising the step of converting said highlight regions to substantially solid regions, said substantially solid regions corresponding to said highlight regions; and

    c) using said substantially solid regions in combination with an image comprising at least marks of said first image to extract a second image, said second image comprising said highlighted portion of said marks.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×