WO2005020140A3 - Group average filter algorithm for digital image processing - Google Patents

Group average filter algorithm for digital image processing Download PDF

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Publication number
WO2005020140A3
WO2005020140A3 PCT/US2004/013100 US2004013100W WO2005020140A3 WO 2005020140 A3 WO2005020140 A3 WO 2005020140A3 US 2004013100 W US2004013100 W US 2004013100W WO 2005020140 A3 WO2005020140 A3 WO 2005020140A3
Authority
WO
WIPO (PCT)
Prior art keywords
row
image
image processing
section
digital image
Prior art date
Application number
PCT/US2004/013100
Other languages
French (fr)
Other versions
WO2005020140A2 (en
Inventor
Olivier Attia
Prateek Shrivastava
Roman Zastepine
Avi Outmezguine
Original Assignee
Olivier Attia
Prateek Shrivastava
Roman Zastepine
Avi Outmezguine
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olivier Attia, Prateek Shrivastava, Roman Zastepine, Avi Outmezguine filed Critical Olivier Attia
Publication of WO2005020140A2 publication Critical patent/WO2005020140A2/en
Publication of WO2005020140A3 publication Critical patent/WO2005020140A3/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/10851—Circuits for pulse shaping, amplifying, eliminating noise signals, checking the function of the sensing device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration by the use of local operators
    • G06T5/73—
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20172—Image enhancement details
    • G06T2207/20192—Edge enhancement; Edge preservation

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 (103). The algorithm then computes the mean pixel intensity (107) value of a row of pixels in the image. The row is divided into sections (109) and the mean pixel intensity of each section (111) is also calculated. The pixels in each section are processed according to the relation of the relative mean intensities (113, 117) of the row and the section. Once each pixel has been processed, the image is reassembled from its divided sections (121).
PCT/US2004/013100 2003-08-11 2004-04-28 Group average filter algorithm for digital image processing WO2005020140A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US49379203P 2003-08-11 2003-08-11
US60/493,792 2003-08-11

Publications (2)

Publication Number Publication Date
WO2005020140A2 WO2005020140A2 (en) 2005-03-03
WO2005020140A3 true WO2005020140A3 (en) 2006-05-11

Family

ID=34215848

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/013100 WO2005020140A2 (en) 2003-08-11 2004-04-28 Group average filter algorithm for digital image processing

Country Status (2)

Country Link
US (2) US7242816B2 (en)
WO (1) WO2005020140A2 (en)

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Publication number Publication date
US20050035206A1 (en) 2005-02-17
US20060193530A1 (en) 2006-08-31
WO2005020140A2 (en) 2005-03-03
US7245780B2 (en) 2007-07-17
US7242816B2 (en) 2007-07-10

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