Bar-code field detecting apparatus performing differential proce

Details Bar-code field detecting apparatus performing differential proce Bar-code field detecting apparatus performing differential proce

1997-11-10

1998-09-08

Shalwala, Bipin

Image analysis

Image enhancement or restoration

Object boundary expansion or contraction

235462, 382174, 382199, 382258, 382291, G06K 942, G06K 944, G06K 936, G06K 934

Patent

active

058057404

ABSTRACT:
A bar-code field detecting apparatus first differentiates, in X and Y directions, image data of a document including a bar code, the position of which is not determined. It then expands each of the differential images in the direction opposite to the direction in which the image data is differentiated. Expanded images are subjected to bar-code field detection.

REFERENCES:
Tsuchiya, et al: "A Method for Bar Code Recognition in Raster-Scanned Images", PROCEEDINGS OF THE 1989 IEICE SPRING CONFERENCE, D-527 Partial.

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