MARKER PROCESSING METHOD, MARKER PROCESSING DEVICE, MARKER, OBJECT HAVING A MARKER, AND MARKER PROCESSING PROGRAM

• US 20130313330A1
• Filed: 08/06/2013
• Published: 11/28/2013
• Est. Priority Date: 07/31/2009
• Status: Abandoned Application

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: INAZUMI, Mitsuhiro
• Application Number:
  US13/960,164
• Publication Number:
  US 20130313330A1
• Time in Patent Office: Days
• US Class Current: 235/494
• CPC Class Codes: G06K 19/06037 multi-dimensional coding
• CPC Class Codes: G06K 7/1443 locating of the code in an image
• CPC Class Codes: G06V 10/44 Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components

Abstract

A marker processing method includes: (a) binarizing a shot image; (b) labeling one or more constituents of the image detected based on the image binarized in step (a); (c) obtaining a region centroid of each of the constituents corresponding to the respective labels processed in step (b); (d) obtaining a degree of overlap of the region centroids of the constituents corresponding respectively to the labels, obtained in step (c); and (e) detecting a marker based on the degree of overlap of the region centroids obtained in step (d).

Claims

1. A marker comprising:

at least three figures having a common centroid.

2. The marker according to claim 1, further comprising:

additional information.

3. The marker according to claim 2, wherein

the additional information is digital data.

4. An article of manufacture comprising:

the marker according to claim 1.