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1. (WO2010114449) BARCODE PROCESSING

Pub. No.:    WO/2010/114449    International Application No.:    PCT/SE2009/050820
Publication Date: Fri Oct 08 01:59:59 CEST 2010 International Filing Date: Sat Jun 27 01:59:59 CEST 2009
IPC: G06T 5/00
G06K 9/46
G06K 9/64
G06T 5/40
Applicants: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
STRÖM, Jacob
YAHYANEJAD, Saeed
Inventors: STRÖM, Jacob
YAHYANEJAD, Saeed
Title: BARCODE PROCESSING
Abstract:
A blurred barcode image is processed by providing an image representation thereof comprising grayscale values. The image representation is deconvoluted using a candidate motion kernel to get a deconvoluted representation. A barcode similarity measure is calculated for the deconvoluted representation to indicate how close the distribution of the grayscale values of the deconvoluted representation is to an optimal distribution for a barcode image. The kernel provision, deconvolution and measure calculation are repeated for different candidate kernels and the candidate kernel resulting in a deconvoluted representation that is closest to a barcode image as determined based on the barcode similarity measures is selected. The selected kernel is used for deconvoluting the blurred barcode image to get a deblurred barcode image that can be read and decoded.