초록 ▼

A technique for decoding a barcode from an image of the barcode in the form of an array of pixels stored in digital form by determining a series of bar start and bar end locations from the image. An optimization technique is used to select the bar start and bar end locations for the series by findin

A technique for decoding a barcode from an image of the barcode in the form of an array of pixels stored in digital form by determining a series of bar start and bar end locations from the image. An optimization technique is used to select the bar start and bar end locations for the series by finding an extremum in a predefined target function. The target function is a function of the number of rows of pixels in the image in which runs of black or white pixels start or end at particular locations in the rows.

대표청구항 ▼

[ I claim:] [1.] Apparatus for producing a coded representation of a barcode, for use in barcode recognition, from an image of the barcode in form of an array comprising rows and columns of pixels stored in digital form by determining a series of bar start and bar end locations from the image, compr

[ I claim:] [1.] Apparatus for producing a coded representation of a barcode, for use in barcode recognition, from an image of the barcode in form of an array comprising rows and columns of pixels stored in digital form by determining a series of bar start and bar end locations from the image, comprising:means for determining for each column of pixels in said image number (NS, NE) of rows of pixels in the image in which runs of black or white pixels start or end at said column; andoptimization logic for selecting the bar start and bar end locations for series by finding an extremum in a predefined target function, the target function being a function of said number (NS, NE) of rows of pixels in the image in which runs of black or white pixels start or end at each column, thereby optimizing agreement on the location of the bar starts and ends between all of the rows in the image.