Barcode processing apparatus and barcode processing method

A barcode processing apparatus comprising:

• a reading unit configured to read an image of a barcode configured by a plurality of bars laid out at a predetermined interval;
• and
• a barcode recognition unit configured to extract a plurality of bar candidates from the read image, to estimate a slant angle of a predetermined bar candidate of the plurality of extracted bar candidates, to correct the read image based on the estimated slant angle, and to recognize a barcode configured by a plurality of bars from the corrected image.

A barcode processing apparatus comprising:

• a reading unit configured to read an image of a barcode configured by a plurality of bars laid out at a predetermined interval;
• and
• a barcode recognition unit configured to assume a plurality of different slant angles, to correct a plurality of bar candidates included in the read image based on the respective slant angles, to decode barcode candidates each configured by the plurality of corrected bar candidates, and to select a best decode result of decode results of the barcode candidates obtained in correspondence with the respective slant angles.

A barcode processing method comprising:

• reading an image of a barcode configured by a plurality of bars laid out at a predetermined interval, each bar being formed by a plurality of ink dots;
• and
• filtering the read image using a mask which has a width smaller than the predetermined interval and larger than a width of one bar, and corresponds to a length of one bar so as to extract a group of a plurality of ink dots, coupling the plurality of ink dots in the extracted group, detecting one bar based on the coupling result, and recognizing a barcode configured by a plurality of detected bars.

A barcode processing method comprising:

• reading an image of a barcode configured by a plurality of bars laid out at a predetermined interval;
• and
• extracting a plurality of bar candidates from the read image, estimating a slant angle of a predetermined bar candidate of the plurality of extracted bar candidates, correcting the read image based on the estimated slant angle, and recognizing a barcode configured by a plurality of bars from the corrected image.

A barcode processing method comprising:

• reading an image of a barcode configured by a plurality of bars laid out at a predetermined interval;
• and
• assuming a plurality of different slant angles, correcting a plurality of bar candidates included in the read image based on the respective slant angles, decoding barcode candidates each configured by the plurality of corrected bar candidates, and selecting a best decode result of decode results of the barcode candidates obtained in correspondence with the respective slant angles.