Stroke localization and binding to electronic document

• US 20060274948A1
• Filed: 06/02/2005
• Published: 12/07/2006
• Est. Priority Date: 06/02/2005
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Wamg, Jian, Wang, Qiang, Dang, Yingnong, Wu, Jiang, Chen, Liyong, Liu, Youjun
• Granted Patent: US 7,580,576 B2
• Time in Patent Office: Days
• US Class Current: 382/202
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/038 Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry

Abstract

A method and apparatus for capturing information and associating the information with a document is described. The captured information may be obtained by a camera associated with a pointing or writing device having a camera.

Claims

1. A process for associating pen movement with an ink stroke comprising the steps of:

receiving at least one captured image from a camera associated with a pen;

obtaining encoded information from said at least one image;

decoding said information; and

forming an ink stroke based on decoded information from said decoding step.

2. The process according to claim 1, further comprising the step of:

pre-processing said at least one captured image.

3. The process according to claim 1, further comprising the step of:

performing pattern analysis on said at least one captured image.

4. The process according to claim 1, further comprising the step of:

recognizing one or more symbols from said obtaining encoded information step.

5. The process according to claim 1, wherein said decoding step produces location information.

6. The process according to claim 1, wherein said forming step includes mapping said ink stroke to a document.

7. A system for associating pen movement with a document comprising:

an input that receives at least one image from a camera associated with a pen;

at least one processor that receives said at least one image, said processor obtaining encoded information from said at least one image, decoding said information, forming an ink stroke, and associating the ink stroke with said document.

9. The system according to claim 7, said at least one processor including a decoder that decodes said information.

10. The system according to claim 7, said at least one processor including an image preprocessor that adjusts lighting of said at least one captured image.

11. The system according to claim 7, said at least one processor including a pattern analyzer that analyzes a pattern found in said at least one image.

12. The system according to claim 7, said at least one processor including a symbol recognizer that recognizes a pattern in said at least one image as a symbol that may be decoded.

13. The system according to claim 7, said at least one processor including a decoder that decodes a symbol found in said at least one image.

14. The system according to claim 7, said at least one processor including a document mapper that maps a location determined from information in said at least one image into a stroke that may be associated with said document.

15. A pen that captures images, said images being processed to generate EIC symbols.