Group average filter algorithm for digital image processing

• US 20050035206A1
• Filed: 04/27/2004
• Published: 02/17/2005
• Est. Priority Date: 08/11/2003
• Status: Active Grant

• Current Assignee: Scanbuy Incorporated
• Original Assignee: Scanbuy Incorporated
• Inventors: Zastepine, Roman, Shrivastava, Prateek, Attia, Olivier, Outmezguine, Avi
• Granted Patent: US 7,242,816 B2
• Time in Patent Office: Days
• US Class Current: 235/462.250
• CPC Class Codes: G06K 7/10851 Circuits for pulse shaping, amplifying, eliminating noise signals, checking the function of the sensing device basic electronic circuitry H03
• CPC Class Codes: G06K 7/14 using light without selection of wavelength, e.g. sensing reflected white light G06K7/10831 - G06K7/1097 take precedence
• CPC Class Codes: G06T 2207/20192 Edge enhancement; Edge preservation
• CPC Class Codes: G06T 5/20 using local operators
• CPC Class Codes: G06T 5/73 Deblurring; Sharpening

Abstract

This present invention discloses a system and method for enhancing images of barcodes and other similar objects taken by the digital camera connected to or embedded in a mobile device. This filter works by converting the image into its equivalent gray scale. The algorithm then computes the mean pixel intensity value of a row of pixels in the image. The row is divided into sections and the mean pixel intensity of each section is also calculated. The pixels in each section are processed according to the relation of the relative mean intensities of the row and the section. Once each pixel has been processed, the image is reassembled from its divided sections.

Claims

3-1. A method for enhancing an image according to claim 1, further comprising the step of:

reassembling said image after said sections have been processed.