05073954 is referenced by 94 patents and cites 4 patents.

The present invention provides for a bar code location and recognition processing system. The surface on which the bar code appears is optically scanned and converted to binary digital signals by a digital video processor. The output of the digital video processor is provided to a bar code image processor for location and reading of the bar code. The bar code is located by summing the "black" pixels in segments of predetermined width for each horizontal scan line, and determining the location of the "L" pattern characteristic of a digitized image of a bar code summed in this manner. Reading of the binary data corresponding to the bar code is carried out by summing the "black" pixels in each vertical scan line in a rectangular region generally corresponding to the location of the bar code within the digitized image, selecting a threshold value proportional to the average maxima of these sums, and, by determining which sums substantially exceed and which substantially fall below the threshold values, decode a binary code pattern corresponding to the bar code.

Title
Bar code location and recognition processing system
Application Number
7/317293
Publication Number
5073954
Application Date
February 28, 1989
Publication Date
December 17, 1991
Inventor
George R Mondie
Bedford
TX, US
Marion W Neff
Euless
TX, US
Richard G Van Tyne
Richardson
TX, US
Agent
Harold E Meier
Assignee
ElectroCom Automation
TX, US
IPC
G06K 7/10
G06K 9/00
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