Pattern recognizing apparatus

• US 6,850,645 B2
• Filed: 12/04/2001
• Issued: 02/01/2005
• Est. Priority Date: 01/09/1996
• Status: Expired due to Fees

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Suwa, Misako, Naoi, Satoshi, Hotta, Yoshinobu
• Primary Examiner(s): COUSO, YON JUNG
• Application Number:
  US10/000,525
• Publication Number:
  US 20030113016A1
• Time in Patent Office: 1,155 Days
• Field of Search: 382/190, 382/173, 382/176, 382/180, 382/310, 382/311, 382/309, 358/464, 358/462
• US Class Current: 382/190
• CPC Class Codes: G06V 30/242 Division of the character sequences into groups prior to recognition; Selection of dictionaries
• CPC Class Codes: G06V 30/414 Extracting the geometrical structure, e.g. layout tree; Block segmentation, e.g. bounding boxes for graphics or text

Abstract

A pattern recognizing apparatus having a character extractor that extracts a character from an input image, a non-character extractor that extracts a non-character from an input image, a character recognizer that recognizes a character, a non-character recognizer that recognizes a non-character and an environment recognizer that instructs the character recognizer to perform a recognition process when the character extractor extracts a character, and that instructs the non-character recognizer to perform a recognition process when the non-character recognizer extracts a non-character.

Claims

1. A pattern recognizing apparatus, comprising:

a character extractor that extracts a character from an input image;

a non-character extractor that extracts a non-character from an input image;

a character recognizer that recognizes a character;

a non-character recognizer that recognizes a non-character; and

an environment recognizer that instructs the character recognizer to perform a recognition process when the character extractor extracts a character, and that instructs the non-character recognizer to perform a recognition process when the non-character recognizer extracts a non-character;

wherein

the environment recognizer computes a reliability indicating certainty about a recognition result obtained from the character recognizer when the character extractor extracts a character, and instructs the non-character recognizer to perform a recognition process with a character extracted by the character extractor regarded as a non-character when the reliability about the recognition result obtained from the character recognizer is smaller than a predetermined value.

2. A pattern recognizing apparatus, comprising:

a character extractor that extracts a character from an input image;

a non-character extractor that extracts a non-character from an input image;

a character recognizer that recognizes a character;

a non-character recognizer that recognizes a non-character; and

an environment recognizer that instructs the character recognizer to perform a recognition process when the character extractor extracts a character, and that instructs the non-character recognizer to perform a recognition process when the non-character recognizer extracts a non-character;

wherein

the environment recognizer computes a reliability indicating certainty about a recognition result obtained from the non-character recognizer when the non-character extractor extracts a non-character, and instructs the character recognizer to perform a recognizing process with a non-character extracted by the non-character extractor regarded as a character when the reliability about the recognition result obtained from the non-character recognizer is smaller than a predetermined value.