Image analysis – Image transformation or preprocessing – Changing the image coordinates
Patent
1993-08-17
1996-01-23
Mancuso, Joseph
Image analysis
Image transformation or preprocessing
Changing the image coordinates
235462, 382199, G06K 932
Patent
active
054871158
ABSTRACT:
A system for determining the fine angular orientation of a bar code symbol in a two-dimensional pixel image. A window is selected from the two-dimensional image for processing. Edge magnitude information and edge direction information are determined for a plurality of pixels in the selected window. For each pixel in the plurality of pixels, the edge magnitude and the edge direction of each pixel is associated with at least one of a plurality of directional ranges if the edge magnitude associated with the pixel exceeds a threshold. For each directional range in the plurality of directional ranges, a density value associated with each directional range is determined in accordance with the number of pixels associated with the directional range, an angular mean value is determined in accordance with the edge directions associated with the directional range, and a noise value is determined in accordance with the edge directions associated with the directional range. At least one candidate directional range is selected in accordance with the associated density values. The fine angular orientation of a bar code symbol is determined in accordance with the edge directions associated with the candidate directional range.
REFERENCES:
patent: 3410991 (1968-11-01), van Berkel
patent: 3833882 (1974-09-01), Busby
patent: 4473746 (1984-09-01), Edmonds
patent: 4648120 (1987-03-01), Chittineni
patent: 4749879 (1988-06-01), Peterson et al.
patent: 4797943 (1989-01-01), Murayama et al.
patent: 4873426 (1989-10-01), Sarna et al.
patent: 4910787 (1990-03-01), Umeda et al.
patent: 4958064 (1990-09-01), Kirkpatrick
patent: 4973829 (1990-11-01), Ishida et al.
patent: 4975977 (1990-12-01), Kurosu et al.
patent: 4982342 (1991-01-01), Moribe et al.
patent: 4988852 (1991-01-01), Krishnan
patent: 4992650 (1991-02-01), Somerville
patent: 5001766 (1991-03-01), Baird
patent: 5036182 (1991-07-01), Ouchi et al.
patent: 5045677 (1991-09-01), Okamura
patent: 5063604 (1991-11-01), Weiman
patent: 5073954 (1991-12-01), Van Tyne et al.
patent: 5073958 (1991-12-01), Imme
patent: 5081689 (1992-01-01), Meyer et al.
patent: 5120940 (1992-06-01), Willsie
patent: 5142592 (1992-08-01), Moler
patent: 5155343 (1992-10-01), Chandler et al.
patent: 5155344 (1992-10-01), Fardeau et al.
"Image Enhancement Processing", E. M. Winter, IBM Technical Disclosure Bulletin, vol. 19, No. 5, Oct. 1986.
"Two Sensor Bar Code Scanner Using Sensor Spacer As A Reference" R. J. Kulikowski and R. G. Pierlott, III, IBM Technical Bulletin, vol. 17, Dec. 1974.
Golub Daniel H.
Mancuso Joseph
United Parcel Service
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