JP2011034437A5

JP2011034437A5 -

Info

Publication number: JP2011034437A5
Application number: JP2009181632A
Authority: JP
Filing date: 2009-08-04
Publication date: 2012-09-06
Anticipated expiration: 2029-08-04

Description

本発明の文字認識装置は、使用者の手指を撮像する撮像手段と、使用者の所定動作に応じ、文字を筆記する入力期間と次文字に移る移行期間とを検出する入力期間検出手段と、手指の移動を移動ベクトルとして検出する移動検出手段と、入力期間中、移動検出手段で検出した移動ベクトルを次画への移行部分を含めてコード化し、時系列にしたがって圧縮した筆記コードデータを取得する筆記コードデータ取得手段と、各文字を正しい書き順および筆運びで筆記した場合に発生する移動ベクトルを次画への移行部分を含めてコード化し、時系列にしたがって圧縮した辞書コードデータを記憶する辞書コードデータ記憶手段と、筆記コードデータと辞書コードデータとを比較して使用者が筆記した文字を特定する特定手段と、を備える。 The character recognition apparatus according to the present invention comprises: an imaging means for imaging a user's finger; an input period detection means for detecting an input period for writing a character and a transition period for shifting to the next character according to a predetermined operation of the user; Movement detection means for detecting movement of fingers as movement vectors, and during the input period, the movement vectors detected by the movement detection means are encoded including the transition part to the next image, and acquisition is made of writing code data compressed according to time series Writing code data acquisition means, moving vectors generated when writing each character in correct writing order and stroke are encoded including the transition part to the next image, and dictionary code data compressed according to time series is stored Dictionary code data storage means, and specifying means for comparing the writing code data and the dictionary code data to specify the character written by the user.

又、本発明の文字認識プログラムは、コンピュータを、使用者の所定動作に応じ、文字を筆記する入力期間と次文字に移る移行期間とを検出する入力期間検出手段、撮像した手指の形状を検出する形状検出手段、手指の移動を移動ベクトルとして検出する移動検出手段、入力期間中、移動検出手段で検出した移動ベクトルを次画への移行部分を含めてコード化し、時系列にしたがって圧縮した筆記コードデータを取得する筆記コードデータ取得手段、筆記コードデータと予め準備された辞書コードデータとを比較して使用者が筆記した文字を特定する特定手段、として機能させる。 In the character recognition program according to the present invention, an input period detection means for detecting an input period for writing a character and a transition period for moving to the next character in accordance with a predetermined operation of a computer is detected, and a shape of a captured finger is detected. Shape detection means, movement detection means for detecting movement of a finger as a movement vector, and a movement vector detected by the movement detection means during the input period, including the transition portion to the next image, coded and compressed according to time series It functions as a writing code data obtaining means for obtaining code data, and a specifying means for comparing the writing code data with the previously prepared dictionary code data to specify a character written by the user.

本発明の文字認識装置は、使用者の手指を撮像する撮像手段と、使用者の所定動作に応じ、文字を筆記する入力期間と次文字に移る移行期間とを検出する入力期間検出手段と、手指の移動を移動ベクトルとして検出する移動検出手段と、入力期間中、移動検出手段で検出した移動ベクトルを次画への移行部分を含めてコード化し、時系列にしたがって圧縮した筆記コードデータを取得する筆記コードデータ取得手段と、各文字を正しい書き順および筆運びで筆記した場合に発生する移動ベクトルを次画への移行部分を含めてコード化し、時系列にしたがって圧縮した辞書コードデータを記憶する辞書コードデータ記憶手段と、筆記コードデータと辞書コードデータとを比較して使用者が筆記した文字を特定する特定手段と、を備える。これにより、使用者は連続的に複数の画数からなる文字を筆記することが可能であり、演算量と処理時間が低減され、筆記する場所や大きさや速度に拘らず文字を認識することが出来る。 The character recognition apparatus according to the present invention comprises: an imaging means for imaging a user's finger; an input period detection means for detecting an input period for writing a character and a transition period for shifting to the next character according to a predetermined operation of the user; Movement detection means for detecting movement of fingers as movement vectors, and during the input period, the movement vectors detected by the movement detection means are encoded including the transition part to the next image, and acquisition is made of writing code data compressed according to time series Writing code data acquisition means, moving vectors generated when writing each character in correct writing order and stroke are encoded including the transition part to the next image, and dictionary code data compressed according to time series is stored Dictionary code data storage means, and specifying means for comparing the writing code data and the dictionary code data to specify the character written by the user. Thus, the user can continuously write characters consisting of a plurality of stroke numbers, the amount of computation and processing time can be reduced, and characters can be recognized regardless of the writing location, size and speed. .

又、本発明の文字認識プログラムは、コンピュータを、使用者の所定動作に応じ、文字を筆記する入力期間と次文字に移る移行期間とを検出する入力期間検出手段、撮像した手指の形状を検出する形状検出手段、手指の移動を移動ベクトルとして検出する移動検出手段、入力期間中、移動検出手段で検出した移動ベクトルを次画への移行部分を含めてコード化し、時系列にしたがって圧縮した筆記コードデータを取得する筆記コードデータ取得手段、筆記コードデータと予め準備された辞書コードデータとを比較して使用者が筆記した文字を特定する特定手段、として機能させる。これにより、使用者は連続的に複数の画数からなる文字を筆記することが可能であり、演算量と処理時間が低減され、筆記する場所や大きさや速度に拘らず文字を認識することが出来る。 In the character recognition program according to the present invention, an input period detection means for detecting an input period for writing a character and a transition period for moving to the next character in accordance with a predetermined operation of a computer is detected, and a shape of a captured finger is detected. Shape detection means, movement detection means for detecting movement of a finger as a movement vector, and a movement vector detected by the movement detection means during the input period, including the transition portion to the next image, coded and compressed according to time series It functions as a writing code data obtaining means for obtaining code data, and a specifying means for comparing the writing code data with the previously prepared dictionary code data to specify a character written by the user. Thus, the user can continuously write characters consisting of a plurality of stroke numbers, the amount of computation and processing time can be reduced, and characters can be recognized regardless of the writing location, size and speed .

Claims

Imaging means for imaging the user's fingers;
Input period detection means for detecting an input period for writing a character and a transition period for moving to the next character according to a predetermined operation of the user;
Movement detection means for detecting movement of a finger as a movement vector;
Writing code data acquisition means for encoding the movement vector detected by the movement detection means during the input period, including the transition part to the next image, and acquiring writing code data compressed according to time series;
A dictionary code data storing means for the motion vector that occurs when noted brush each character encoding including transition portion to Tsugiga stores when dictionary code data compressed according to sequence,
And a specifying means for comparing the writing code data with the dictionary code data to specify a character written by the user.
The input period detection means includes a shape detection means for detecting the shape of the finger imaged by the imaging means.
Character recognition device.

The entering force period detecting means detects said transition period and the input periods on the basis of the detection result of the previous SL shape detection means,
The movement detection means includes position detection means for detecting the position of the finger captured by the imaging means, and detects the movement vector from a change in position of the finger detected by the position detection means. The character recognition device according to 1.

The writing code data acquisition means determines that the stationary state is present when the movement amount of the movement vector is less than a predetermined threshold, and encodes the movement vector according to the movement direction when it is larger than the predetermined threshold.
The character recognition device according to claim 1, wherein the predetermined threshold is changed based on a history of movement amount.

The dictionary code data storage means includes a plurality of the dictionary code data corresponding to each character, and in addition to the case of writing in the correct writing order and writing, a dictionary corresponding to the writing in the incorrect writing order and writing Characterized by comprising at least one code data,
The character recognition device according to any one of claims 1 to 3.

The character recognition device according to any one of claims 1 to 4 , wherein said writing code data acquisition means deletes and encodes repeated portions when said movement vector repeats two directions.

Computer,
Input period detection means for detecting an input period for writing a character and a transition period for moving to the next character according to a predetermined operation of the user;
Shape detection means for detecting the shape of the imaged finger;
Movement detection means for detecting movement of a finger as a movement vector;
Writing code data acquisition means for encoding the movement vector detected by the movement detection means during the input period, including a transition part to the next image, and acquiring writing code data compressed according to time series;
Specifying means for specifying characters written by the user by comparing the writing code data with dictionary code data prepared in advance;
Character recognition program to function as.