Title:
CHARACTER RECOGNIZING DEVICE, CHARACTER LEARNING DEVICE AND COMPUTER READABLE RECORDING MEDIUM
Document Type and Number:
Japanese Patent JP3180792
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To realize the reading of a strong character string due to characters contact and continuous writing or the like.
SOLUTION: A character segmenting and characteristic extracting means 12 detects segmentation position candidates from a character string image. A character string reading means 13 extracts a character pattern candidate from the character string image based on the segmentation position candidates and verifies the validity of all kinds of thinkable read results by using a character appearance probability calculating means 14. The means 14 receives the character pattern candidate, a character code, a character state and the character code and character state of a character pattern candidate located just before the character pattern candidate from the means 13, evaluates the validity of shape connection with the preceding character pattern candidate by using a character state transition probability, also evaluates the validity that the character pattern candidate belongs to a certain category by using a character template and calculates maximum likelihood (point) that the character pattern candidate belongs to a certain state and a certain character category. The means 13 searches for and outputs segmentation recognized results of the character string in which the recognition points of the entire character string become maximum.
Inventors:
Takafumi Koshinaka
Application Number:
JP762199A
Publication Date:
June 25, 2001
Filing Date:
January 14, 1999
Export Citation:
Assignee:
NEC
International Classes:
G06K9/68; G06K9/62; G06K9/72; (IPC1-7): G06K9/62
Domestic Patent References:
| JP896085A | ||||
| JP56464A |
Other References:
「情報処理学会研究報告」Ｖｏｌ．９３ Ｎｏ．７９ ｐ．３７−４４（１９９３）”Ｂｉｇｒａｍによるオンライン漢字認識の文脈後処理手法”
「情報処理学会論文誌」Ｖｏｌ．３９ Ｎｏ．３ ｐ．６２５−６３５（１９９８）”認識誤りを含む和文テキストにおける全文検索手法”
「電子情報通信学会技術研究報告 ＰＲＭＵ９８−１３８」Ｖｏｌ．９８ Ｎｏ．４８９ ｐ．１７−２４（１９９８）”切り出し・認識・言語の確信度を統合した枠なしオンライン文字列認識手法”
「電子情報通信学会技術研究報告 ＰＲＭＵ９８−１３９」Ｖｏｌ．９８ Ｎｏ．４８９ ｐ．２５−３０（１９９８）”確率モデルの基づくオンライン枠なし手書き文字列認識”
「情報処理学会論文誌」Ｖｏｌ．３９ Ｎｏ．３ ｐ．６２５−６３５（１９９８）”認識誤りを含む和文テキストにおける全文検索手法”
「電子情報通信学会技術研究報告 ＰＲＭＵ９８−１３８」Ｖｏｌ．９８ Ｎｏ．４８９ ｐ．１７−２４（１９９８）”切り出し・認識・言語の確信度を統合した枠なしオンライン文字列認識手法”
「電子情報通信学会技術研究報告 ＰＲＭＵ９８−１３９」Ｖｏｌ．９８ Ｎｏ．４８９ ｐ．２５−３０（１９９８）”確率モデルの基づくオンライン枠なし手書き文字列認識”
Attorney, Agent or Firm:
Hiromi Sakai