Patent ID: 7487916
Filing Date: 2009-02-10
Classification: G06K

Abstract:
1. An imaging based bar code reader including an imaging and decoding system for imaging and decoding a target bar code comprising: an imaging system including an imaging pixel array and a memory for: imaging the target bar code by scanning the target bar code to generate a tilted imaged bar code stored in memory, the tilted imaged bar code comprising an array of gray scale values stored in the memory; generating a virtual scan line traversing a horizontal width of the tilted imaged bar code; establishing a zone about the virtual scan line, the zone defined by an upper bound on one side of the virtual scan line and a lower bound on opposite side of the virtual scan line; projecting gray scale values within the zone onto the virtual scan line thereby generating a sequence of gray scale values associated with the virtual scan line, the sequence of gray scale values representative of a pattern of elements of the target bar code; and decoding the target bar code utilizing the sequence of values associated with the virtual scan line.