Imaging device having indicia-controlled image parsing mode

• US 6,561,428 B2
• Filed: 09/17/2001
• Issued: 05/13/2003
• Est. Priority Date: 10/17/1997
• Status: Expired due to Fees

• Current Assignee: Hand Held Products Incorporated (Honeywell International Inc.)
• Original Assignee: Hand Held Products Incorporated (Honeywell International Inc.)
• Inventors: Gerst, Carl W. III, Meier, Timothy P., Rosetti, James, Longacre, Andrew Jr., Barber, Charles P., Hussey, Robert M.
• Primary Examiner(s): Lee, Michael G.
• Assistant Examiner(s): Kim, Ahshik
• Application Number:
  US09/954,081
• Publication Number:
  US 20020104884A1
• Time in Patent Office: 603 Days
• Field of Search: 235/462.01, 235/472.01, 235/375, 235/454, 235/462.25
• US Class Current: 235/462.25
• CPC Class Codes: G06K 2207/1017 Programmable
• CPC Class Codes: G06K 7/10712 Fixed beam scanning
• CPC Class Codes: G06K 7/10792 Special measures in relation to the object to be scanned
• CPC Class Codes: G06K 7/10851 Circuits for pulse shaping, amplifying, eliminating noise signals, checking the function of the sensing device basic electronic circuitry H03
• CPC Class Codes: G06K 7/10881 constructional details of hand-held scanners
• CPC Class Codes: G06K 7/14 using light without selection of wavelength, e.g. sensing reflected white light G06K7/10831 - G06K7/1097 take precedence
• CPC Class Codes: G06K 7/1417 2D bar codes
• CPC Class Codes: G06K 7/1443 locating of the code in an image
• CPC Class Codes: G06K 7/1456 determining the orientation of the optical code with respect to the reader and correcting therefore

Abstract

The invention relates to a system for processing image data corresponding a scene comprising an imaging device and an image reading instruction indicia. In accordance with the invention, image data corresponding to a scene comprising an image reading instruction indicia is processed in a manner that depends on features of the image reading instruction indicia. If the image reading instruction indicia is of a type whose size, scaling, orientation, and distortion can be determined, scaling, orientation, and distortion characteristics determined from the image reading instruction indicia can be used to improve the image reading process.

Claims

1. A system for processing an image representation of a scene, said system comprising:

an image reading instruction indicia disposed in said scene; and

an imaging device for capturing said image representation, said imaging device having a control circuit configured to;

capture an image representation of said scene including said image reading instruction indicia;

determine at least one of a scaling characteristic, orientation characteristic or distortion characteristic of a region of said image representation representing said image reading instruction indicia; and

parse image data from said image representation using at least one of said determined scaling, orientation, or distortion characteristics.

2. The system of claim 1, wherein said image reading instruction indicia comprises a signature box.

3. The system of claim 1, wherein said image reading instruction indicia comprises a signature box coupled with a logo.

4. The system of claim 1, wherein said image reading instruction indicia comprises a signature box coupled with a string of text characters.

5. The system of claim 1, wherein said image reading instruction indicia comprises a string of text characters.

6. The system the claim 1, wherein said image reading instruction indicia comprising an image parsing mode commencement indicator, which when read by said control circuit causes said device to operate in an image parsing mode.

7. The system of claim 1, wherein said control circuit determines a distortion characteristic for said image representation region corresponding to said image reading instruction indicia by a process including the step of establishing grid lines based on graphical features of said image reading instruction indicia.

8. The system of claim 1, wherein said control circuit determines a distortion characteristic for said image representation region corresponding to said image reading instruction indicia by a process including the step of establishing grid lines based on graphical features of said image reading instruction indicia, and wherein said image reading instruction indicia includes graphical features sufficient to enable said control circuit to establish a pair of grid lines that are essentially parallel to one another or essentially perpendicular to one another when said image representation is essentially distortion free.

9. The system of claim 8, wherein said image reading instruction indicia includes a signature box, and wherein said control circuit establishes distortion correction grid line based on said image representation region corresponding to corners of said signature box.

10. The system of claim 8, wherein said image reading instruction indicia includes a string of text characters, and wherein said control circuit establishes distortion correction grid lines based on graphical features of said image representation region corresponding to at least one specific character within said string of text characters.

11. A method for processing image data using an imaging device having bar code decoding capability, said method comprising the steps of:

capturing an image representation of a scene that includes a bar code;

determining at least one imaging characteristic for said bar code;

storing said image representation and data corresponding to said at least one imaging characteristic in respective buffer memory locations;

receiving a command from a user to initiate an image parsing mode, and while in said image parsing mode, and while in said image parsing mode, retrieving from said buffer memory locations said image representation and said data corresponding to at least one imaging characteristic; and

using said data corresponding to said at least one imaging characteristic in parsing image data from said image representation.

12. The method of claim 11, wherein said at least one imaging characteristic is a scaling characteristic.

13. The method of claim 11, wherein said at least one imaging characteristic is an orientation characteristic.

14. The method of claim 11, wherein said at least one imaging characteristic is a distortion characteristic.

15. The method of claim 11, wherein said image parsing mode is executed using nonintegrated processor assembly in communication with said device.

16. The method of claim 11, wherein said image parsing mode is initiated via a keyboard of said imaging device.

17. The method of claim 11, wherein said image parsing mode is initiated via a keyboard or mouse of a nonintegrated processor assembly in communication with said device.

18. The method of claim 11, wherein said bar code is of a type that does not comprise an image parsing mode commencement indicator.

19. The method of claim 11, wherein in said image parsing mode, image data is developed corresponding to more than one interest region of said image representation.

20. The method of claim 11, wherein said storing step includes the step of storing distortion correction grid line data based on said bar code representation, and wherein said retrieving step includes the step of retrieving said distortion correction grid line data.