JP2006277224A - Handwritten character layout shaping method and electronic board system - Google Patents

Handwritten character layout shaping method and electronic board system Download PDF

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JP2006277224A
JP2006277224A JP2005094291A JP2005094291A JP2006277224A JP 2006277224 A JP2006277224 A JP 2006277224A JP 2005094291 A JP2005094291 A JP 2005094291A JP 2005094291 A JP2005094291 A JP 2005094291A JP 2006277224 A JP2006277224 A JP 2006277224A
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character
arrangement
input
size
information
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JP4678671B2 (en
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Takeshi Mino
剛 三野
Takanobu Hosoe
高信 細江
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Hitachi Software Engineering Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To perform layout shaping of characters after handwriting input without character recognition in an electronic board system. <P>SOLUTION: Whether an input character is a first character or not (step 501) and whether it is a symbol or not (step 502) are determined, and when the input character is the first character but not a symbol, reference rectangular information, classification information of the previous character, height information of the previous character, trisected center height information of the previous character, and circumscribed rectangular information of the previous character are stored (steps 503-507). When the input character is a second or more character, whether it is a new character string or not is determined (step 508), and when it is determined not to be a new character string, a classification is determined from the height information of the previous character, the center height information of the previous character, and height circumscribed rectangular information of an input character C, and the height information of the previous character, the center height information of the previous character and the circumscribed rectangular information of the previous character are updated to the information for the input character C (step 509). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、電子ボードシステムにおける手書き文字入力時の文字配置整形方法に関する。   The present invention relates to a character arrangement shaping method when inputting handwritten characters in an electronic board system.

近年、授業や会議などの分野において、コピーボードや黒板の発展した装置として、電子ボードシステムが利用されている。この電子ボードシステムでは、キーボードを使用せず、電子ペンのみで操作を行なうのが主流となっている。そのため文字を入力するために手書きで入力することになり、手書きで入力された文字の配置等を読み易く整形して表示することが要求される。
このような要求を解決するための方法として、従来、手書き入力された文字に基づき、次の文字の入力位置に案内マークを表示する方法や（例えば、特許文献１参照。）、文字認識を前提とした方法（例えば、特許文献２参照。）が公知となっている。
特開平０５−０６７２３６号公報 特開平０７−１８２０９９号公報 In recent years, electronic board systems have been used as advanced devices for copy boards and blackboards in fields such as classes and conferences. In this electronic board system, it is mainstream to operate only with an electronic pen without using a keyboard. Therefore, in order to input a character, it is input by handwriting, and it is required to display the shape and the like of the character input by handwriting so that it can be easily read.
As a method for solving such a request, conventionally, a method of displaying a guidance mark at an input position of the next character based on a handwritten character (for example, see Patent Document 1), or character recognition is assumed. (For example, refer to Patent Document 2).
Japanese Patent Laid-Open No. 05-067236 Japanese Patent Application Laid-Open No. 07-182099

しかし、前記特許文献１に記載の方法では、入力位置の案内マークを表示するのみであり、手書き入力がされた後に文字の配置整形を行うものではなかった。従って、案内マークからずれた手書き入力がされた場合に、それを修正することはできなかった。特に、入力対象がタブレットなどＡ４サイズ程度の場合は、文字のサイズや配置をユーザ自身に調整させることが比較的可能であるが、黒板サイズになると、大きな画面に対して手書き入力を行うため、徐々に文字の整列が乱れ、横書きの場合では右に行けば行くほど、縦書きの場合には下に行けば行くほど、文字の整列が乱れてしまうという問題があった。
また、前記特許文献２に記載の方法では、文字認識を前提とする方法であるため、文字の誤認識の可能性があり、その修正が必要になる等、手書き入力をスムーズに行うことができないという問題があった。特に、授業や会議等においては、手書き入力を行いながら説明をすることが多いため、スムーズな入力操作が阻害されると、説明等に支障を来たす恐れがあった。 However, in the method described in Patent Document 1, only the guidance mark of the input position is displayed, and the character layout is not performed after handwritten input. Therefore, when handwritten input deviating from the guidance mark is made, it cannot be corrected. In particular, when the input target is about A4 size such as a tablet, it is relatively possible to let the user adjust the size and arrangement of the characters themselves. However, when the blackboard size is used, handwriting input is performed on a large screen. There is a problem that the character alignment gradually becomes disordered, and the character alignment becomes disordered as it goes to the right in horizontal writing and as it goes down in vertical writing.
Further, since the method described in Patent Document 2 is based on character recognition, there is a possibility of erroneous recognition of characters, and it is necessary to correct the characters. Thus, handwriting input cannot be performed smoothly. There was a problem. In particular, in classes, meetings, etc., explanations are often made while handwritten input is performed. Therefore, if smooth input operations are hindered, there is a risk of hindering explanations.

本発明は前記課題を解決するためのものであり、電子ボードシステムにおいて、文字認識を行うことなく、手書き入力後の文字の配置整形を行うことを可能とする手書き文字配置整形方法を提供することを目的とする。   The present invention is for solving the above-described problems, and provides a handwritten character arrangement shaping method that enables character arrangement after handwriting input without performing character recognition in an electronic board system. With the goal.

前記課題を解決するため本発明の手書き文字配置整形方法は、電子ボードシステムにおける電子ペンによる電子ボード上の手書き文字列の配置整形方法であって、前記手書き文字列の一文字目の文字の大きさ及び配置を基準情報として記憶する第１ステップと、前記手書き文字列の二文字目以降の各入力文字について、各入力文字の大きさ及び配置に応じて、前記一文字目の文字の配置に対する配置関係を示す文字分類を決定する第２ステップと、前記基準情報に基づき、前記各入力文字の大きさ及び配置に応じて、各入力文字の大きさ及び配置を調整する第３ステップとを備える。
また、前記第２ステップは、直前の文字の大きさ及び文字分類に基づき三等分した文字配置領域を設定し、前記入力文字の大きさ及び配置に基づき前記文字配置領域内における配置関係を判定して、当該判定結果に応じて前記文字分類を決定することを特徴とする。
また、本発明の電子ボードシステムは、電子ボード上に入力された手書き文字列の配置整形を行う文字整形手段を備える電子ボードシステムであって、前記文字整形手段は、電子ペンによる電子ボード上の手書き文字列の一文字目の文字の大きさ及び配置を基準情報として記憶する記憶手段と、前記手書き文字列の二文字目以降の各文字について、各入力文字の大きさ及び配置に応じて、前記一文字目の文字の配置に対する配置関係を示す文字分類を決定する分類決定手段と、前記各入力文字の大きさ及び配置に応じて、前記基準情報に基づき各入力文字の大きさ及び配置を調整する入力文字調整手段とを備えることを特徴とする。
また、前記分類決定手段は、直前の文字の大きさ及び文字分類に基づき三等分した文字配置領域を設定し、前記入力文字の大きさ及び配置に基づき前記文字配置領域内における配置関係を判定して、当該判定結果に応じて前記文字分類を決定することを特徴とする。 In order to solve the above-mentioned problem, a handwritten character arrangement shaping method of the present invention is an arrangement shaping method of a handwritten character string on an electronic board by an electronic pen in an electronic board system, and the size of the first character of the handwritten character string And the first step of storing the arrangement as reference information, and for each input character after the second character of the handwritten character string, the arrangement relationship to the arrangement of the first character according to the size and arrangement of each input character And a third step of adjusting the size and arrangement of each input character according to the size and arrangement of each input character based on the reference information.
In the second step, a character arrangement area divided into three equal parts is set based on the size and character classification of the immediately preceding character, and an arrangement relation in the character arrangement area is determined based on the size and arrangement of the input character. Then, the character classification is determined according to the determination result.
Further, the electronic board system of the present invention is an electronic board system comprising character shaping means for arranging and shaping a handwritten character string inputted on the electronic board, wherein the character shaping means is on the electronic board using an electronic pen. Storage means for storing the size and arrangement of the first character of the handwritten character string as reference information, and for each character after the second character of the handwritten character string, according to the size and arrangement of each input character, Classification determining means for determining a character classification indicating an arrangement relationship with respect to the arrangement of the first character, and adjusting the size and arrangement of each input character based on the reference information according to the size and arrangement of each input character Input character adjusting means.
Further, the classification determining unit sets a character arrangement area divided into three equal parts based on the size and character classification of the immediately preceding character, and determines an arrangement relation in the character arrangement area based on the size and arrangement of the input character. Then, the character classification is determined according to the determination result.

以上の構成により本発明では、手書き入力された文字について、文字認識をすることなく、一文字目の配置と大きさとを基準に、二文字目以降の文字について、配置及び大きさの適切な整形が可能となる。   With the above configuration, in the present invention, with respect to a character input by handwriting, the arrangement and size of the second and subsequent characters can be appropriately shaped based on the arrangement and size of the first character without performing character recognition. It becomes possible.

以下、本発明の一実施の形態に係る手書き文字配置整形方法を行う電子ボードシステムについて、図面に基づき説明する。
図１は、電子ボードシステムの概略構成を示すブロック図である。
電子ボードシステムは、投影画像を表示する電子ボード１と、電子ボード１における電子ペン２の入力操作に対応する処理を行い、投影画像データを生成する制御用コンピュータ３と、制御用コンピュータ３により生成された投影画像を電子ボード１に投影するプロジェクター等の表示装置４とを備える。
制御用コンピュータ３は、ペンセンサの取得した電子ペン２のペン先の位置座標に基づく入力データ処理と、当該処理結果に基づき投影画像データを生成する表示データ生成処理とを行う。
本実施の形態では、電子ボード１上において、電子ペン２により入力された手書き文字について、制御用コンピュータ３が配置整形処理を行う。制御用コンピュータ３は、入力された位置座標に基づき、文字列を構成する各入力文字毎に、大きさ及び配置を示す外接矩形情報を生成して記憶する手段と、当該外接矩形情報に基づき各入力文字毎に後述する文字分類を決定する手段と、当該文字分類及び大きさに応じて各入力文字の配置及び大きさを整形する手段とを備える。 Hereinafter, an electronic board system that performs a handwritten character arrangement shaping method according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a schematic configuration of an electronic board system.
The electronic board system is generated by an electronic board 1 that displays a projection image, a control computer 3 that performs processing corresponding to an input operation of the electronic pen 2 on the electronic board 1, and generates projection image data. And a display device 4 such as a projector that projects the projected image on the electronic board 1.
The control computer 3 performs input data processing based on the position coordinates of the pen tip of the electronic pen 2 acquired by the pen sensor, and display data generation processing for generating projection image data based on the processing result.
In the present embodiment, on the electronic board 1, the control computer 3 performs an arrangement shaping process for handwritten characters input by the electronic pen 2. The control computer 3 generates and stores circumscribed rectangle information indicating the size and arrangement for each input character constituting the character string based on the input position coordinates, and each of the control computer 3 based on the circumscribed rectangle information. Means for determining a character classification to be described later for each input character, and means for shaping the arrangement and size of each input character according to the character classification and size.

図２は、本実施の形態に係る配置整形方法により整形された文字列の例を示す図である。
本実施の形態では、一連の文字列の一文字目の大きさ及び配置に合わせて、二文字目以降の各文字の分類に応じた文字配置整形を行う。各入力文字についての分類の決定では、三等分した文字配置領域を設定する。ここで、文字配置領域とは、一連の文字列を構成する各入力文字の配置関係を区別するために設定した仮想的な領域を示す。
図２（ａ）に示すように、横書きの場合には、上下方向に三等分した文字配置領域２１０を設定し、各文字の分類に応じた配置を行う。具体的には、アルファベット大文字と小文字の一部（ｂ、ｄなど）と日本語文の促音（っ）・拗音（ゃ、ゅ、ょ）以外の文字のように上側三分の二に配置されるもの、和文アルファベット小文字の一部（ｅ、ｎなど）と日本語文の促音・拗音のように中央三分の一に配置されるもの、アルファベット小文字のｊのように全体に配置されるもの、アルファベット小文字ｇ、ｙのように下側三分の二に配置されるもの、および大きさが他に比べて十分小さい記号（・、。など）に分類して各文字の配置整形を行う。
一方、図２（ｂ）に示すように、縦書きの場合には、左右方向に三等分した文字配置領域２２０を設定し、アルファベット大文字と幅の広いアルファベット小文字（ｍ、ｗなど）と日本語文の促音・拗音以外の文字のように全体に配置されるもの、日本語文の促音・拗音のように右側三分の二に配置されるもの、幅の広くないアルファベット小文字のように中央三分の一に配置されるもの、および大きさが他に比べて十分小さい記号（・、。など）に分類して各文字の配置整形を行う。
横書きの場合と縦書きの場合とでは、文字配置領域を三等分する方向と分類の数と位置関係が変わるのみなので、以下、横書きの場合についてのみ説明を行なう。なお、各文字の入力の区切りは一定時間経過などの既存技術で行うものとする。 FIG. 2 is a diagram illustrating an example of a character string shaped by the layout shaping method according to the present embodiment.
In the present embodiment, in accordance with the size and arrangement of the first character of a series of character strings, character arrangement shaping is performed according to the classification of each character after the second character. In determining the classification for each input character, a character arrangement area divided in three is set. Here, the character arrangement area indicates a virtual area set in order to distinguish the arrangement relation of each input character constituting a series of character strings.
As shown in FIG. 2A, in the case of horizontal writing, a character arrangement area 210 that is divided into three equal parts in the vertical direction is set, and an arrangement according to the classification of each character is performed. Specifically, they are placed in the upper two-thirds, such as letters other than uppercase and lowercase letters (b, d, etc.) and Japanese sound prompts (っ) and 拗 音 (nya, yu, yo). Japanese alphabet, part of the lowercase Japanese alphabet (e, n, etc.) and Japanese text prompting / stuttering, placed in the center third, alphabetic lowercase j, the whole alphabet, Each character is arranged and classified by classifying it into symbols arranged in the lower two-thirds, such as lowercase letters g and y, and symbols (.,...) That are sufficiently smaller than others.
On the other hand, as shown in FIG. 2B, in the case of vertical writing, a character arrangement area 220 divided into three equal parts in the left-right direction is set, and uppercase alphabetic characters and wide alphabetic lowercase characters (m, w, etc.) One that is placed as a whole other than words / non-speech sounds, one that is placed in the right third like Japanese sound / stuttering, and the middle thirds that are not wide alphabetic lowercase letters Each character is arranged and shaped by classifying it into symbols that are arranged in one and symbols (.,...) That are sufficiently smaller than others.
In the case of horizontal writing and the case of vertical writing, only the direction in which the character arrangement area is divided into three, the number of classifications, and the positional relationship are changed, so only the case of horizontal writing will be described below. It should be noted that the input of each character is separated by an existing technique such as the passage of a fixed time.

図３は、配置整形の対象となる文字列の一例として、入力された文字が段々と小さくなっていく場合を示す図である。
この場合には、各入力文字の分類の適切な判定には、基準となる文字配置領域の大きさを変えていく必要があるため、直前の文字のサイズを基準として文字配置領域を決定する。なお、文字列の一文字目はアルファベット大文字または日本語の促音・拗音以外の文字であると仮定して、文字配置領域の上側三分の二に配置されるものとする。 FIG. 3 is a diagram illustrating a case where input characters are gradually reduced as an example of a character string to be arranged and shaped.
In this case, since it is necessary to change the size of the reference character arrangement area for appropriate determination of the classification of each input character, the character arrangement area is determined based on the size of the immediately preceding character. Note that the first character of the character string is assumed to be a character other than capital letters of the alphabet or Japanese prompting / stuttering and is arranged in the upper two-thirds of the character arrangement area.

図４は、文字配置領域における入力文字の配置位置と、カテゴリー種別との関係を示す図である。
図４に示すように、文字配置領域４００の上側三分の二に配置されるものをCategoryU、中央三分の一に配置されるものをCategoryC、下側三分の二に配置されるものをCategoryD、全体に配置されるものをCategoryA、記号をとする。 FIG. 4 is a diagram showing the relationship between the input character placement position in the character placement region and the category type.
As shown in FIG. 4, those arranged in the upper two-thirds of the character arrangement area 400 are Category U, those arranged in the central third are Category C, and those arranged in the lower two-thirds. CategoryD is defined as CategoryA and the symbol placed throughout.

以上の基準に基づき、本実施の形態に係る文字配置整形方法を説明する。
図５は、本実施の形態に係る文字配置整形処理手順を示すフローチャートである。
まず、文字入力の検出を受付け、入力された文字が一文字目か否かを判定する（ステップ５０１）。この判定処理では、基準情報が記憶されているか否かを判定し、基準情報が記憶されていない場合には、一文字目とする。
一文字目である場合には、記号（CategoryS）か否かを判定する（ステップ５０２）。記号（CategoryS）か否かの判定処理では、入力文字Ｃの外接矩形の高さ及び幅が、予め定義された高さ及び幅よりも小さいか否かを判定し、小さければ記号（CategoryS）として処理を終了する。なお、高さ及び幅の定義は、システム上予め定義されたものでもよく、また、入力操作を行うユーザにより定義されたものとしてもよい。
一方、予め定義された高さ及び幅よりも大きい場合には、記号（CategoryS）以外のものと判定し、入力文字Ｃを文字列の一文字目として、以下の基準情報の記憶処理を行う（ステップ５０３〜５０７）。
ステップ５０３では、基準矩形情報BaseRectに、入力文字Ｃの外接矩形を記憶する。
ステップ５０４では、入力文字Ｃが一文字目と判定されたことからアルファベット大文字もしくは促音・拗音以外の日本語文字であるとして、前の文字の分類情報PreCtgにCategoryUを記憶する。
ステップ５０５では、前の文字の高さ情報PreHに、文字配置領域を三等分した値として、入力文字Ｃの高さの二分の一を記憶する。
ステップ５０６では、前の文字の大きさ及び配置に対応した文字配置領域全体の中心の高さ情報PreCenterに、入力文字Ｃの外接矩形の上から四分の三の位置を記憶する。
ステップ５０７では、前の文字の外接矩形情報PreRectに、入力文字Ｃの外接矩形を記憶する。
一方、ステップ５０１において、一文字目でないと判定された場合には、新しい文字列か否かを判定する（ステップ５０８）。この判定処理では、前の文字の外接矩形情報PreRectの中心点と、入力文字Ｃの外接矩形の中心点の距離を計算し、予め決められた距離以上離れていれば新しい文字列の一文字目として、ステップ５０３に進む。
ステップ５０８において、新しい文字列でないと判定された場合には、前の文字の高さ情報PreHと、前の文字の中心の高さ情報PreCenterと、入力文字Ｃの外接矩形の高さ情報とから分類を決定し、前の文字の高さ情報PreH，前の文字の中心の高さ情報PreCenter，前の文字の外接矩形情報PreRectを、入力文字Ｃの情報に更新する（ステップ５０９）。 Based on the above criteria, the character arrangement shaping method according to the present embodiment will be described.
FIG. 5 is a flowchart showing a character arrangement shaping process procedure according to the present embodiment.
First, detection of character input is accepted, and it is determined whether or not the input character is the first character (step 501). In this determination process, it is determined whether or not the reference information is stored. If the reference information is not stored, the first character is set.
If it is the first character, it is determined whether or not it is a symbol (CategoryS) (step 502). In the process of determining whether or not it is a symbol (CategoryS), it is determined whether or not the height and width of the circumscribed rectangle of the input character C are smaller than a predefined height and width. End the process. Note that the definitions of height and width may be predefined in the system or may be defined by a user who performs an input operation.
On the other hand, if it is larger than the predefined height and width, it is determined that it is something other than the symbol (CategoryS), and the following reference information is stored using the input character C as the first character of the character string (step 503-507).
In step 503, the circumscribed rectangle of the input character C is stored in the reference rectangle information BaseRect.
In step 504, since the input character C is determined to be the first character, Category U is stored in the classification information PreCtg of the previous character, assuming that the input character C is a Japanese character other than capital letters of the alphabet or prompting / stuttering.
In step 505, half the height of the input character C is stored in the height information PreH of the previous character as a value obtained by dividing the character arrangement area into three equal parts.
In step 506, the position of the third quarter from the top of the circumscribed rectangle of the input character C is stored in the center height information PreCenter of the entire character arrangement area corresponding to the size and arrangement of the previous character.
In step 507, the circumscribed rectangle of the input character C is stored in the circumscribed rectangle information PreRect of the previous character.
On the other hand, if it is determined in step 501 that the character is not the first character, it is determined whether or not it is a new character string (step 508). In this determination process, the distance between the center point of the circumscribed rectangle information PreRect of the previous character and the center point of the circumscribed rectangle of the input character C is calculated, and if it is more than a predetermined distance, it is determined as the first character of the new character string. The process proceeds to step 503.
If it is determined in step 508 that the character string is not a new character string, from the height information PreH of the previous character, the height information PreCenter of the center of the previous character, and the height information of the circumscribed rectangle of the input character C The classification is determined, and the previous character height information PreH, the previous character center height information PreCenter, and the previous character circumscribed rectangle information PreRect are updated to the information of the input character C (step 509).

図６は、図５に示すステップ５０９の処理の詳細を示すフローチャートである。
本処理では、直前の文字の大きさ及び文字分類に基づき三等分した文字配置領域を設定し、前記入力文字の大きさ及び配置に基づき前記文字配置領域内における配置関係を判定して、当該判定結果に応じて前記文字分類を決定する。
まず、入力文字Ｃの外接矩形の高さ情報を、前の文字の高さ情報PreHで割った値を算出する（ステップ６０１）。この場合、前の文字の高さ情報PreHが、文字配置領域を三等分した値となる。
算出した値が０．５以上１．５未満に該当するか否かを判定し（ステップ６０２）、該当する場合には、入力文字Ｃの分類を文字配置領域の中央三分の一に配置されるCategoryCと判断して、入力文字Ｃの分類情報CCtgにCategoryCを記憶し（ステップ６０３）、入力文字Ｃの外接矩形の上から二分の一の位置を前の文字の中心の高さ情報PreCenterとして記憶し（ステップ６０４）、入力文字Ｃの外接矩形の高さを前の文字の高さ情報PreHとして記憶する（ステップ６０５）。
ステップ６０２において、０．５以上１．５未満でない場合には、さらに、算出した値が１．５以上２．５未満か否かを判定する（ステップ６０６）。判定の結果、該当する場合には、さらに、入力文字Ｃの外接矩形の中心と、前の文字の中心の高さPreCenterとを比較する（ステップ６０７）。比較の結果、入力文字Ｃの外接矩形の中心の方が上にある場合は、文字配置領域の上側三分の二に配置されるCategoryUと判断し、入力文字Ｃの分類情報CCtgにCategoryUを記憶し（ステップ６０８）、入力文字Ｃの外接矩形の上から四分の三の位置を、前の文字の中心の高さ情報PreCenterとして記憶する（ステップ６０９）。一方、ステップ６０７の比較の結果、入力文字Ｃの外接矩形の中心の方が下にある場合は、文字配置領域の下側三分の二に配置されるCategoryDと判断し、入力文字Ｃの分類情報CCtgにCategoryDを記憶し（ステップ６１０）、入力文字Ｃの外接矩形の上から四分の一の位置を、前の文字の中心の高さ情報PreCenterとして記憶する（ステップ６１１）。さらに、入力文字Ｃの外接矩形の高さの二分の一を前の文字の高さ情報PreHとして記憶する（ステップ６１２）。
ステップ６０６において、１．５以上２．５未満でない場合には、さらに、算出した値が２．５以上３．５未満か否かを判定する（ステップ６１３）。判定の結果該当する場合には、文字配置領域全体に配置されるCategoryAと判断し、入力文字Ｃの分類情報CCtgにCategoryAを記憶し(ステップ６１４)、入力文字Ｃの外接矩形の上から二分の一の位置を前の文字の中心の高さ情報PreCenterとして記憶し（ステップ６１５）、入力文字Ｃの外接矩形の高さの三分の一を前の文字の高さ情報PreHとして記憶する（ステップ６１６）。
ステップ６１３において、算出した値が２．５以上３．５未満に該当しない場合には、入力文字Ｃの分類情報CCtgにCategorySを記憶する（ステップ６１７）。
以上の処理により入力文字Ｃの分類情報CCtg等を記憶した後、入力文字Ｃの分類情報CCtgと、基準矩形情報BaseRectに基づき文字配置整形を行う（ステップ６１８）。具体的には、入力文字Ｃの分類情報CCtgがCategoryUの場合、入力文字Ｃを基準矩形情報BaseRectと同じ高さで上辺が基準矩形情報BaseRectの上辺と合うように配置する。入力文字Ｃの分類情報CCtgがCategoryDの場合、入力文字Ｃを基準矩形情報BaseRectと同じ高さで上辺が基準矩形情報BaseRectの中央に合うように配置する。入力文字Ｃの分類情報CCtgがCategoryCの場合、入力文字Ｃを基準矩形情報BaseRectの半分の高さで上辺が基準矩形情報BaseRectの中央に合うように配置する。入力文字Ｃの分類CCtgがCategoryAの場合、入力文字Ｃを基準矩形情報BaseRectの１．５倍の高さで上辺が基準矩形情報BaseRectの上辺に合うように配置する。入力文字Ｃの分類CCtgがCategorySの場合、入力文字Ｃの高さや位置の調整を行なわずそのままの位置に配置する。
以上のように、文字配置領域を三等分した大きさと入力文字Ｃの大きさとの比較結果とともに、前記文字配置領域の中心位置と入力文字Ｃの中心位置との比較による文字配置領域内における配置関係の判定結果を考慮して、入力文字の文字分類を判定する。 FIG. 6 is a flowchart showing details of the processing in step 509 shown in FIG.
In this process, the character arrangement area divided into three equal parts based on the size and character classification of the immediately preceding character is set, the arrangement relation in the character arrangement area is determined based on the size and arrangement of the input character, and The character classification is determined according to the determination result.
First, a value obtained by dividing the height information of the circumscribed rectangle of the input character C by the height information PreH of the previous character is calculated (step 601). In this case, the height information PreH of the previous character is a value obtained by dividing the character arrangement area into three equal parts.
It is determined whether or not the calculated value falls between 0.5 and 1.5 (step 602). If so, the classification of the input character C is placed in the center third of the character placement area. CategoryC is stored in the classification information CCtg of the input character C (step 603), and the position half the top of the circumscribed rectangle of the input character C is used as the height information PreCenter of the previous character. Store (step 604), and store the height of the circumscribed rectangle of the input character C as the height information PreH of the previous character (step 605).
In step 602, if it is not 0.5 or more and less than 1.5, it is further determined whether or not the calculated value is 1.5 or more and less than 2.5 (step 606). As a result of the determination, if applicable, the center of the circumscribed rectangle of the input character C is further compared with the height PreCenter of the center of the previous character (step 607). As a result of comparison, if the center of the circumscribed rectangle of the input character C is on the upper side, it is determined that it is placed in the upper two thirds of the character placement area, and Category U is stored in the classification information CCtg of the input character C Then, the position of the third quarter from the top of the circumscribed rectangle of the input character C is stored as the height information PreCenter of the center of the previous character (step 609). On the other hand, if the result of the comparison in step 607 is that the center of the circumscribed rectangle of the input character C is lower, it is determined that CategoryD is placed in the lower third of the character placement area, and the classification of the input character C is made. Category D is stored in the information CCtg (step 610), and the position of the quarter of the circumscribed rectangle of the input character C is stored as the height information PreCenter of the center of the previous character (step 611). Further, one half of the height of the circumscribed rectangle of the input character C is stored as the height information PreH of the previous character (step 612).
In step 606, if it is not 1.5 or more and less than 2.5, it is further determined whether or not the calculated value is 2.5 or more and less than 3.5 (step 613). If the result of the determination is applicable, it is determined that CategoryA is arranged in the entire character arrangement area, and CategoryA is stored in the classification information CCtg of the input character C (step 614), and halved from the top of the circumscribed rectangle of the input character C One position is stored as the height information PreCenter of the center of the previous character (step 615), and one third of the height of the circumscribed rectangle of the input character C is stored as the height information PreH of the previous character (step 615). 616).
In step 613, if the calculated value does not correspond to 2.5 or more and less than 3.5, CategoryS is stored in the classification information CCtg of the input character C (step 617).
After storing the classification information CCtg and the like of the input character C by the above processing, the character arrangement shaping is performed based on the classification information CCtg of the input character C and the reference rectangle information BaseRect (step 618). Specifically, when the classification information CCtg of the input character C is CategoryU, the input character C is arranged at the same height as the reference rectangle information BaseRect so that the upper side matches the upper side of the reference rectangle information BaseRect. When the classification information CCtg of the input character C is CategoryD, the input character C is arranged at the same height as the reference rectangle information BaseRect so that the upper side matches the center of the reference rectangle information BaseRect. When the classification information CCtg of the input character C is CategoryC, the input character C is arranged so that it is half the height of the reference rectangle information BaseRect and the upper side is aligned with the center of the reference rectangle information BaseRect. When the classification CCtg of the input character C is CategoryA, the input character C is arranged at a height 1.5 times the reference rectangle information BaseRect so that the upper side matches the upper side of the reference rectangle information BaseRect. When the classification CCtg of the input character C is CategoryS, the input character C is placed at the same position without adjusting the height and position of the input character C.
As described above, the result of comparison between the size of the character placement region divided into three and the size of the input character C, as well as the placement in the character placement region by comparing the center position of the character placement region with the center position of the input character C The character classification of the input character is determined in consideration of the relationship determination result.

以上の文字配置整形処理の具体例について、図７〜９に基づき説明する。
図７は文字配置整形処理の対象となる文字列の一例を示す図であり、図８は文字列の各文字についての文字配置領域を三等分した状態を示す図である。
本実施の形態に係る文字配置整形処理では、図７に示す文字列を構成する各文字について、図８に示すように、文字配置領域を三等分するとともに、前の文字の文字配置領域の中心高さを設定する。
図９は文字Ｓ（一文字目）及び文字ａについての矩形情報等の一例を示す図であり、図１０は文字ａ（二文字目）の入力時における記憶情報を示す図である。
図９に示すように、文字Ｓの外接矩形情報が「（３０，２７）−（１３０，１４１）」，高さ情報が「１１４」とする。また、文字ａの外接矩形情報が「（１３３，８９）−（２１４，１４２）」，高さ情報が「５３」とする。ここで、外接矩形情報は、各文字を構成する描画データの上下左右端の位置座標に基づき生成し、高さ情報は、上下端の位置座標の差に基づき生成する。
本例では、文字Ｓは一文字目であるため、アルファベット大文字もしくは促音・拗音以外の日本語文字であるとして、分類情報はCategoryUとする。
図１０（ａ）に示すように、記憶情報１０００は、基準矩形情報BaseRect１００１と、前の文字の分類情報CCtg１００２，高さ情報PreH１００３，中心高さ情報PreCenter１００４とを有する。
図１０（ｂ）に示すように、文字ａが入力された場合、前の文字の高さ情報PreHが「５７」で文字ａの高さ情報が「５３」であることから、二文字目の“ａ”は“S”の半分の大きさ、すなわち三等分全体の三分の一の大きさであるとしてCategoryCと判断する。なお、図６に示すフローチャートでは、５７÷５３≒０．９３となるため、図６に示すステップ６０２より、CategoryCと判断することとなる。この結果、分類情報CCtgにCategoryCを記憶するとともに、前の文字の高さ情報PreH及び中心高さ情報PreCenterを文字ａについての情報に更新する。
同様に、三文字目“ｍ”は二文字目“ａ”と同じ大きさ、すなわち三等分全体の三分の一の大きさであるとしてCategoryCと判断する。四文字目“ｐ”は三文字目“ｍ”の倍の大きさ、すなわち三等分全体の三分の二の大きさであり、中心が三文字目“ｍ”の三等分全体の中央より下方向に寄っている（図８参照）としてCategoryDと判断する。五文字目“ｌ”は四文字目“ｐ”と同じ大きさ、すなわち三等分全体の三分の二の大きさであり、中心が三等分全体の中央である“ｐ”の上から四分の一の位置より上方向に寄っている（図８参照）としてCategoryUと判断する。六文字目の“ｅ”は五文字目“ｌ”の半分の大きさ、すなわち三等分全体の三分の一の大きさであるとしてCategoryCと判断する。最後の“．”は六文字目の“ｅ”に対して十分に小さいのでCategorySと判断する。
図１１は、以上の判定結果に応じて、図７に示す文字列７００を構成する各文字を配置整形した例を示す図である。
図１１（ａ）に示すように、手書き入力された文字列７００を構成する各文字について分類を判定した後、図１１（ｂ）に示すように、一文字目の“S”の高さ及び位置を基準にして、各文字の分類に応じた配置整形を行う。この場合、CategoryUと判断されたもの（例えば、図１１の「ｌ」）は“S”と同じ高さで上辺が“S”の上辺に合うように配置し、CategoryCと判断されたもの（例えば、図１１の「a」「m」「e」）は“S”の半分の高さで下辺が“S”の下辺に合うように配置し、CategoryDと判断されたもの（例えば、図１１の「p」）は“S”と同じ高さで上辺が“S”の半分の高さに合うように配置し、CategoryAと判断されたものは“S”の一．五倍の高さで上辺が“S”の上辺に合うように配置し、CategorySと判断されたもの（例えば、図１１の「．」）は大きさと位置の調整は行なわない。 A specific example of the above character arrangement shaping process will be described with reference to FIGS.
FIG. 7 is a diagram showing an example of a character string to be subjected to character arrangement shaping processing, and FIG. 8 is a diagram showing a state where the character arrangement area for each character of the character string is divided into three equal parts.
In the character arrangement shaping process according to the present embodiment, for each character constituting the character string shown in FIG. 7, the character arrangement area is divided into three equal parts as shown in FIG. Set the center height.
FIG. 9 is a diagram illustrating an example of rectangular information about the character S (first character) and the character a, and FIG. 10 is a diagram illustrating stored information when the character a (second character) is input.
As shown in FIG. 9, the circumscribed rectangle information of the character S is “(30, 27)-(130, 141)” and the height information is “114”. The circumscribed rectangle information of the character a is “(133, 89)-(214, 142)”, and the height information is “53”. Here, the circumscribed rectangle information is generated based on the position coordinates of the upper, lower, left and right ends of the drawing data constituting each character, and the height information is generated based on the difference between the position coordinates of the upper and lower ends.
In this example, since the character S is the first character, the classification information is CategoryU, assuming that it is a capital letter of the alphabet or Japanese characters other than the prompt sound / stuttering.
As shown in FIG. 10A, the storage information 1000 includes reference rectangle information BaseRect 1001, classification information CCtg 1002, previous height information PreH 1003, and center height information PreCenter 1004.
As shown in FIG. 10B, when the character a is input, the height information PreH of the previous character is “57” and the height information of the character a is “53”. “A” is determined to be Category C, assuming that it is half the size of “S”, that is, one third of the total of three equal parts. In the flowchart shown in FIG. 6, since 57 ÷ 53≈0.93, it is determined as CategoryC from step 602 shown in FIG. As a result, CategoryC is stored in the classification information CCtg, and the height information PreH and the center height information PreCenter of the previous character are updated to information about the character a.
Similarly, it is determined that the third character “m” is the same size as the second character “a”, that is, the size of one third of the entire three-division, and is CategoryC. The fourth letter “p” is twice the size of the third letter “m”, that is, two-thirds of the whole bisector, and the middle of the whole bisector with the third letter “m” in the center. It is determined that it is CategoryD as approaching downward (see FIG. 8). The fifth letter “l” is the same size as the fourth letter “p”, that is, two-thirds of the whole trisection, and the center is “p”, which is the center of the whole trisection. It is determined that CategoryU is approaching upward from the quarter position (see FIG. 8). The sixth character “e” is determined to be Category C, assuming that it is half the size of the fifth character “l”, that is, one third of the total of the three equal parts. Since the last “.” Is sufficiently smaller than the sixth character “e”, it is determined as CategoryS.
FIG. 11 is a diagram showing an example in which the characters constituting the character string 700 shown in FIG. 7 are arranged and shaped according to the above determination results.
As shown in FIG. 11A, after determining the classification of each character constituting the character string 700 handwritten, as shown in FIG. 11B, the height and position of the first character “S” Based on the above, the layout is shaped according to the classification of each character. In this case, what is determined as CategoryU (for example, “l” in FIG. 11) is arranged so that the upper side matches the upper side of “S” at the same height as “S”, and is determined as CategoryC (for example, , “A”, “m”, and “e” in FIG. 11 are arranged so as to be half the height of “S” and the lower side is aligned with the lower side of “S”, and are determined as CategoryD (for example, FIG. 11). “P”) is placed so that it is the same height as “S” and the upper side is half the height of “S”, and Category A is one of “S”. A five-fold height with the upper side aligned with the upper side of “S” and determined as CategoryS (for example, “.” In FIG. 11) is not adjusted in size and position.

以上のように、本実施の形態に係る文字配置整形方法では、手書き入力された文字について、文字認識をすることなく、一文字目の位置と大きさを基準に、二文字目以降の文字について、配置及びサイズの適切な整形が可能となる。   As described above, in the character arrangement shaping method according to the present embodiment, for the characters after the second character on the basis of the position and size of the first character without performing character recognition, Appropriate shaping of placement and size is possible.

なお、前記実施の形態では、各入力文字毎に配置整形処理を行うこととしているが、これに限らず、一連の文字列の入力が終了したとき（新たな文字列の入力が開始されたと判定したとき等）に、前記一連の文字列を構成する全ての入力文字をまとめて配置整形することとしてもよい。また、ユーザによる所定操作が行われたとき等、任意のタイミングで配置整形処理を行うこととしてもよく、この場合には、配置整形処理を行う文字列の範囲を指定可能としてもよい。
また、前記実施の形態では、文字配置領域を設定する基準として、直前の文字の大きさ及び配置を用いることとしているが、これに限らず、例えば、一連の文字列の一文字目等、他の文字の大きさ及び配置に基づき文字配置領域を設定することとしてもよい。 In the above-described embodiment, the arrangement shaping process is performed for each input character. However, the present invention is not limited to this. When the input of a series of character strings is completed (determination that input of a new character string is started). Etc.), all the input characters constituting the series of character strings may be collectively arranged and shaped. Further, the arrangement shaping process may be performed at an arbitrary timing such as when a predetermined operation is performed by the user. In this case, the range of the character string to be subjected to the arrangement shaping process may be designated.
In the above embodiment, the size and arrangement of the immediately preceding character is used as a reference for setting the character arrangement area. However, the present invention is not limited to this. For example, other characters such as the first character of a series of character strings may be used. The character arrangement area may be set based on the character size and arrangement.

本発明の一実施の形態に係る手書き文字配置整形処理を行う電子ボードシステムの概略構成を示すブロック図である。It is a block diagram which shows schematic structure of the electronic board system which performs the handwritten character arrangement | positioning shaping process which concerns on one embodiment of this invention. 配置整形した手書き文字列の一例を示す図である。It is a figure which shows an example of the handwritten character string which carried out arrangement | positioning shaping. 手書き文字列のHandwritten string 文字の位置関係と大きさと、文字分類との関係を示す図である。It is a figure which shows the relationship between the positional relationship and size of a character, and character classification. 本発明の一実施の形態に係る手書き文字配置整形処理手順を示すフローチャートである。It is a flowchart which shows the handwritten character arrangement | positioning shaping process procedure which concerns on one embodiment of this invention. 二文字目以降の各文字についての手書き文字配置整形処理の詳細を示すフローチャートである。It is a flowchart which shows the detail of the handwritten character arrangement shaping process about each character after the 2nd character. 手書き入力された文字列の一例を示す図である。It is a figure which shows an example of the character string input by handwriting. 図７に示す文字列を構成する各文字の配置と分類判定との関係を説明するための図である。It is a figure for demonstrating the relationship between arrangement | positioning of each character which comprises the character string shown in FIG. 7, and classification | category determination. 図７に示す文字列を構成する一文字目及び二文字目の配置及び高さ情報の一例を示す図である。It is a figure which shows an example of arrangement | positioning and height information of the 1st character and 2nd character which comprise the character string shown in FIG. 図７に示す文字列を構成する二文字目の入力時における記憶情報のデータ構造の一例を示す図である。It is a figure which shows an example of the data structure of the memory | storage information at the time of the input of the 2nd character which comprises the character string shown in FIG. 図７に示す文字列を配置整形した状態を示す図である。It is a figure which shows the state which arranged and shaped the character string shown in FIG.

符号の説明Explanation of symbols

１ 電子ボード、２ 電子ペン、３ 中央処理装置、４ 表示装置、２１０，２２０，３００，４００ 文字配置領域、１０００ 記憶情報、１００１ 基準矩形情報，１００２ 分類情報、１００３ 高さ情報、１００４ 中心高さ情報。
1 electronic board, 2 electronic pen, 3 central processing unit, 4 display device, 210, 220, 300, 400 character arrangement area, 1000 storage information, 1001 reference rectangle information, 1002 classification information, 1003 height information, 1004 center height information.

Claims (4)

電子ボードシステムにおける電子ペンによる電子ボード上の手書き文字列の配置整形方法であって、
前記手書き文字列の一文字目の文字の大きさ及び配置を基準情報として記憶する第１ステップと、
前記手書き文字列の二文字目以降の各入力文字について、各入力文字の大きさ及び配置に応じて、前記各入力文字の配置関係を示す文字分類を決定する第２ステップと、
前記基準情報に基づき、前記各入力文字の大きさ及び文字分類に応じて、各入力文字の大きさ及び配置を調整する第３ステップと
を備える手書き文字配置整形方法。 An arrangement shaping method for handwritten character strings on an electronic board by an electronic pen in an electronic board system,
A first step of storing the size and arrangement of the first character of the handwritten character string as reference information;
A second step of determining, for each input character after the second character of the handwritten character string, a character classification indicating an arrangement relationship of the input characters according to the size and arrangement of the input characters;
A handwritten character arrangement shaping method comprising: a third step of adjusting the size and arrangement of each input character according to the size and character classification of each input character based on the reference information. 前記第２ステップは、基準となる文字の大きさ及び配置に基づき三等分した文字配置領域を設定し、前記入力文字の大きさ及び配置に基づき前記文字配置領域内における配置関係を判定して、当該判定結果に応じて前記文字分類を決定することを特徴とする請求項１に記載の手書き文字配置整形方法。   The second step sets a character arrangement area divided into three equal parts based on a reference character size and arrangement, and determines an arrangement relation in the character arrangement area based on the input character size and arrangement. The handwritten character layout shaping method according to claim 1, wherein the character classification is determined according to the determination result. 電子ボード上に入力された手書き文字列の配置整形を行う文字整形手段を備える電子ボードシステムであって、
前記文字整形手段は、
電子ペンによる電子ボード上の手書き文字列の一文字目の文字の大きさ及び配置を基準情報として記憶する記憶手段と、
前記手書き文字列の二文字目以降の各文字について、各入力文字の大きさ及び配置に応じて、前記一文字目の文字の配置に対する配置関係を示す文字分類を決定する分類決定手段と、
前記各入力文字の大きさ及び文字分類に応じて、前記基準情報に基づき各入力文字の大きさ及び配置を調整する入力文字調整手段と
を備えることを特徴とする電子ボードシステム。 An electronic board system comprising character shaping means for shaping and arranging the handwritten character string input on the electronic board,
The character shaping means is
Storage means for storing the size and arrangement of the first character of the handwritten character string on the electronic board by the electronic pen as reference information;
For each character after the second character of the handwritten character string, according to the size and arrangement of each input character, classification determining means for determining a character classification indicating an arrangement relationship with respect to the arrangement of the first character,
An electronic board system comprising: input character adjusting means for adjusting the size and arrangement of each input character based on the reference information in accordance with the size and character classification of each input character. 前記分類決定手段は、基準となる文字の大きさ及び配置に基づき三等分した文字配置領域を設定し、前記入力文字の大きさ及び配置に基づき前記文字配置領域内における配置関係を判定して、当該判定結果に応じて前記文字分類を決定することを特徴とする請求項３に記載の電子ボードシステム。



The classification determining unit sets a character arrangement area divided into three equal parts based on a reference character size and arrangement, and determines an arrangement relationship in the character arrangement area based on the input character size and arrangement. The electronic board system according to claim 3, wherein the character classification is determined according to the determination result.



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JP2013182512A (en) * 2012-03-02 2013-09-12 Casio Comput Co Ltd Handwritten character processing device and program
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CN109657203A (en) * 2017-10-12 2019-04-19 北大方正集团有限公司 Method, the system of the literal size adjustment of character library
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