System and method of improving the legibility and applicability of document pictures using form based image enhancement

• US 20060164682A1
• Filed: 01/24/2006
• Published: 07/27/2006
• Est. Priority Date: 01/25/2005
• Status: Abandoned Application

• Current Assignee: DSPV Ltd.
• Original Assignee: DSPV Ltd.
• Inventors: Lev, Zvi Haim
• Application Number:
  US11/337,492
• Publication Number:
  US 20060164682A1
• Time in Patent Office: Days
• US Class Current: 358/1.150
• CPC Class Codes: G06T 7/001 using an image reference approach
• CPC Class Codes: G06V 30/40 Document-oriented image-based pattern recognition
• CPC Class Codes: H04N 1/387 Composing, repositioning or otherwise geometrically modifying originals

Abstract

A system and method for imaging a document, and using a reference document to place pieces of the document in their correct relative position and resize such pieces in order to generate a single unified image, including the electronic capturing a document with one or multiple images using an imaging device, the performing of pre-processing of said images to optimize the results of subsequent image recognition, enhancement, and decoding, the comparing of said images against a database of reference documents to determine the most closely fitting reference document, and the applying of knowledge from said closely fitting reference document to adjust geometrically the orientation, shape, and size of said electronically captured images so that said images correspond as closely as possibly to said reference document.

Claims

1. A method for imaging a document, and using a reference document to place pieces of the document in their correct relative position and resize such pieces in order to generate a single unified image, the method comprising:

electronically capturing a document with one or multiple images using an imaging device;

performing pre-processing of said images to optimize the results of subsequent image recognition, enhancement, and decoding;

comparing said images against a database of reference documents to determine the most closely fitting reference document; and

applying knowledge from said closely fitting reference document to adjust geometrically orientation, shape, and size of said electronically captured images so that said images correspond as closely as possibly to said reference document.

2. The method of claim 1, wherein the method further comprises:

after completion of processing, routing the document to one or a multiplicity of electronic or physical locations.

3. The method of claim 1, wherein the method further comprises:

applying metadata from said database of reference documents to selectively and optimally process the data from each area of said document as such area has been identified by said geometric adjustment of said captured electronic images.

4. The method of claim 3, wherein the method further comprises:

after completion of processing, routing the document to at least one of electronic and physical locations.

5. The method of claim 3, wherein the method further comprises:

applying an optical recognition technique decoding information on said imaged document by comparison to known optical symbols.

6. The method of claim 5, wherein:

said optical recognition technique is Optical Character Recognition.

7. The method of claim 5, wherein:

said optical recognition technique is Optical Mark Recognition.

8. The method of claim 6, wherein the method further comprises:

after completion of processing, routing the document to at least one of electronic and physical locations.

9. The method of claim 7, where in the method further comprises:

after completion of processing, routing the document to at least one of electronic and physical locations.

10. The method of claim 1, wherein the method further comprises:

identification of symbols within said document by said comparison of said images and said geometric adjustment of said images; and

decoding of said symbols.

11. The method of claim 8, wherein the imaging device captures photographic images of the document.

12. The method of claim 8, wherein the imaging device captures video images of the document.

13. The method of claim 9, wherein the imaging device captures video photographic images of the document.

14. The method of claim 10, wherein the imaging device captures video images of the document.

15. The method of claim 1, wherein:

said imaging device captures at least two images of said document;

said at least two images are of at least two different parts of the document;

said at least two images are recognized as processed so that they are recognized as said at least two different parts of a reference document; and

based on said recognition, forming a unified image of a higher photographic quality than at least one of said at least two images.

16. A system for imaging a document, and using a reference document to place pieces of the document in their correct relative position and resize such pieces in order to generate a single unified image, the system comprising:

at least one document to be electronically captured;

a portable imaging device for electronically capturing said document with at least one image;

a network for pre-processing said at least one image to optimize the results of subsequent image recognition, enhancement, and decoding;

a database comprising reference documents for comparing against said at least one pre-processed image; and

at least one server for receiving said at least one pre-processed image from the network, storing said at least one image, performing final processing, comparing said at least one image against at least one reference document, and routing the processed images to one or more recipients.

17. The system of claim 16, wherein:

said imaging device captures at least two images of said document;

said at least two images are of at least two different parts of the document;

said at least two images are recognized as processed so that they are recognized as two different parts of a reference document; and

based on a result of said recognition, forming a unified image of a higher photographic quality than at least one of said at least two images.

18. The system of claim 16, wherein:

said portable imaging device is configured to electronically capture at least one of photographic images and video clips of said document.

19. The system of claim 16, wherein:

said portable imaging device is configured to electronically capture photographic images of said document, and cannot electronically capture video clips of said document.

20. A computer program product stored on a computer readable medium for causing a computer medium to perform a method comprising:

electronically capturing a document with at least one image using an imaging device;

performing pre-processing of said at least one image to optimize results of subsequent image recognition, enhancement, and decoding;

comparing said at least one image against reference documents stored in a database, to determine most closely fitting reference document;

applying knowledge from said closely fitting reference document to adjust geometrically orientation, shape, and size of said electronically captured images so that said at least one image corresponds as closely as possibly to said reference document.