IMAGING TERMINAL OPERATIVE FOR DECODING

• US 20140166757A1
• Filed: 08/30/2013
• Published: 06/19/2014
• Est. Priority Date: 11/17/2011
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Smith, Taylor
• Granted Patent: US 8,903,172 B2
• Time in Patent Office: Days
• US Class Current: 235/462.04
• CPC Class Codes: G06K 7/10722 Photodetector array or CCD scanning
• CPC Class Codes: G06K 7/10821 further details of bar or optical code scanning devices
• CPC Class Codes: G06K 7/12 using a selected wavelength, e.g. to sense red marks and ignore blue marks

Abstract

There is set forth herein an imaging terminal operative for decoding of bar codes. In one embodiment the terminal can include a color imaging assembly having a color image sensor array. The terminal can be operative for capture of a color frame of image data. Responsively to the capture of the color frame of image data the terminal can convert the color image data to monochrome image data while maintaining the color image data. The terminal can utilize the monochrome image data to search for a color bar code finder pattern. The terminal can be operative so that if the color bar code pattern is found utilizing the monochrome image data the terminal can utilize the color image data for attempting to decode a color bar code.

Claims

1. A computer readable medium comprising instructions for processor execution, the instructions for performance of the method comprising capturing a color frame of image data having red pixel values, green pixel values and blue pixel values, converting image data of the color frame of image data into monochrome image data while maintaining color image data in a memory store, searching for a bar code symbol finder pattern utilizing the monochrome image data, responsively to a finding of the color bar code symbol finder pattern utilizing the color image data for attempting to decode, and, responsively to a finding of a monochrome bar code symbol finder pattern utilizing the monochrome image data for attempting to decode.

2. The computer readable medium of claim 1, wherein the converting includes interpolating missing green pixel values.

3. The computer readable medium of claim 1, wherein the converting includes interpolating missing red pixel values.

4. The computer readable medium of claim 1, wherein the converting includes interpolating missing blue pixel values.

5. The computer readable medium of claim 1, wherein the converting includes using pixel values of the red pixel values, pixel values of the green pixel values, and pixel values of the blue pixel values.

6. The computer readable medium of claim 5, wherein the converting includes subjecting the color frame of image data to 4×

4 binning