×

Method and apparatus for real time identification and correction of pixel defects for image sensor arrays

  • US 20030222995A1
  • Filed: 06/04/2002
  • Published: 12/04/2003
  • Est. Priority Date: 06/04/2002
  • Status: Active Grant
First Claim
Patent Images

1. An apparatus for correcting pixel image data comprising:

  • a memory structure for receiving a plurality of lines of image data from an image obtained from an image sensor array, each line containing signal value data corresponding to a line of pixels in the array; and

    a correction section which receives the image data from the memory structure and in which the signal value of a tested pixel in the array is compared with the signal values of at least eight surrounding pixels, and which, if the signal value of the tested pixel is larger than all of the signal values of the eight surrounding pixels, the signal value of the tested pixel is replaced with the largest signal value from among the eight surrounding pixels, and which, if the signal value of the pixel being tested is smaller than all of the signal values of the eight surrounding pixels, the signal value of the tested pixel is replaced with the smallest signal value from among the eight surrounding pixels.

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