JP2016076093A5

JP2016076093A5 -

Info

Publication number: JP2016076093A5
Application number: JP2014206201A
Authority: JP
Filing date: 2014-10-07
Publication date: 2017-09-14
Anticipated expiration: 2034-10-07

Description

ここで、文字認識支援装置２０で実行されるＳ９１−Ｓ９Ｂの処理は、３隅以上の所定領域内の部分画像から文字認識された第１文字列と第２文字列との間の第１文字列間距離と、前記第１文字列と第２文字列とに対応する第１評価文字列と第２評価文字列との間の第１評価文字列間距離との第１距離比、及び、前記部分画像から文字認識された第１文字列と第３文字列との間の第２文字列間距離と、前記第１文字列と第３文字列とに対応する第１評価文字列と第３評価文字列との間の第２評価文字列間距離との第２距離比に基づい
て、前記認識対象体の撮像画像の上下左右の何れか一の方向についての歪みを補正する移動の要否を判定するステップの一例である。また、文字認識支援装置２０のＣＰＵ１１等は、３隅以上の所定領域内の部分画像から文字認識された第１文字列と第２文字列との間の第１文字列間距離と、前記第１文字列と第２文字列とに対応する第１評価文字列と第２評価文字列との間の第１評価文字列間距離との第１距離比、及び、前記部分画像から文字認識された第１文字列と第３文字列との間の第２文字列間距離と、前記第１文字列と第３文字列とに対応する第１評価文字列と第３評価文字列との間の第２評価文字列間距離との第２距離比に基づいて、前記認識対象体の撮像画像の上下左右の何れか一の方向についての歪みを補正する移動の要否を判定する手段の一例としてＳ９１−Ｓ９Ｂの処理を実行する。 Here, the processing of S91-S9B executed by the character recognition support device 20 is the first character between the first character string and the second character string recognized from the partial images in the predetermined area at three or more corners. and inter-row distance, the first distance ratio of the first evaluation string distance between the first character string and the first evaluation string and the second evaluation character string corresponding to the second character string, and, A distance between the second character strings between the first character string and the third character string recognized from the partial image, a first evaluation character string corresponding to the first character string, and the third character string; Based on the second distance ratio between the second evaluation character string and the third evaluation character string
Te is an example of determining the necessity of moving for correcting the distortion of any one of the vertical and horizontal directions of the captured image before Symbol recognition subject. Further, the CPU 11 or the like of the character recognition support device 20 has a first inter-character string distance between a first character string and a second character string recognized from a partial image in a predetermined area of three or more corners, and the first character string . 1 string and first distance ratio of the first evaluation string distance between the first evaluation string and the second evaluation character string corresponding to the second character string, and is the character recognized from the partial image A distance between the second character strings between the first character string and the third character string, and between the first evaluation character string and the third evaluation character string corresponding to the first character string and the third character string. based on the second distance ratio between the second evaluation string distance between, the means for determining the necessity of moving for correcting the distortion of any one of the vertical and horizontal directions of the captured image before Symbol recognition object As an example, the processing of S91-S9B is executed.

Claims

Means for accepting a captured image including a rectangular recognition target object to be character recognition;
Means for specifying predetermined areas at three or more corners in a captured image including the recognition target object based on coordinate information of a plurality of evaluation character strings in the recognition target object registered in a storage unit;
Means for performing character recognition on a partial image in the predetermined region, and determining a relationship between a character string recognized in the predetermined region and the evaluation character string in the recognition object;
Display control means for displaying whether or not characters can be recognized on at least one of the plurality of axes indicating the orientation of the rectangular recognition target body from the relationship;
A character recognition support device.

Based on the positional relationship between the coordinate information of the evaluation character string and the character string that has been character-recognized in the predetermined area corresponding to the evaluation character string, Correction movement determining means for determining whether or not axial correction movement is necessary,
The display control unit corrects a shooting posture with respect to the recognition target object by superimposing the captured image on the recognition target object based on whether or not a plurality of correction movements in the axial direction determined by the correction movement determination unit are necessary. The character recognition support device according to claim 1, wherein the direction is displayed.

The correction movement determination means includes a center of gravity of a combination area including two or more character strings recognized from a partial image in a predetermined area at two or more corners, and a combination including two or more evaluation character strings corresponding to the predetermined area The character recognition support device according to claim 2, wherein the necessity of translational movement in any one of up, down, left, and right directions with respect to the captured image of the recognition object is determined based on a positional relationship with the center of gravity of the region.

The correction movement determination means includes an angle from the centroid of a combination area including two or more character strings recognized from a partial image in a predetermined area at two or more corners to the centroid direction of each character string recognized. Based on the relative relationship between the centroid of the combination area including two or more evaluation character strings corresponding to the predetermined area and the angle from the centroid direction of each evaluation character string to the captured image of the recognition target object, The character recognition support apparatus according to claim 2, wherein the necessity of counterclockwise rotational movement is determined.

The correction movement determination means includes a distance between a center of gravity of a combination area including two or more character strings recognized from a partial image in a predetermined area at two or more corners, and a center of gravity for each character string recognized. Based on the relative relationship between the centroid of the combination area including two or more evaluation character strings corresponding to the predetermined area and the centroid of each evaluation character string, the enlargement direction of the image size of the captured image of the recognition object or The character recognition support device according to any one of claims 2 to 4, wherein it is determined whether or not movement in the reduction direction is necessary.

The correction movement determining means includes a distance between first character strings between a first character string and a second character string recognized from a partial image in a predetermined area of three or more corners, the first character string, and a first character string. A first distance ratio between a first evaluation character string corresponding to two character strings and a distance between first evaluation character strings between the second evaluation character string and the first character string recognized from the partial image A distance between the second character strings between the first character string and the third character string, and a second evaluation character between the first evaluation character string and the third evaluation character string corresponding to the first character string and the third character string based on the second distance ratio between inter-column distance, before Symbol determines the necessity of the mobile correcting distortion of any one of the vertical and horizontal directions of the captured image of the recognition target object, the second aspect of 5 The character recognition support device according to any one of the above.

On the computer,
Receiving a captured image including a rectangular recognition target object for character recognition;
Identifying predetermined areas at three or more corners in a captured image including the recognition target object based on coordinate information of a plurality of evaluation character strings in the recognition target object registered in a storage unit;
Performing character recognition on the partial image in the predetermined area, and determining a relationship between the character string recognized in the predetermined area and the evaluation character string in the recognition object;
A display control step for displaying whether or not characters can be recognized for at least one of the plurality of axes indicating the posture of the rectangular recognition target body from the relationship;
Character recognition support program for running.

Computer
Receiving a captured image including a rectangular recognition target object for character recognition;
Identifying predetermined areas at three or more corners in a captured image of the recognition target object based on coordinate information of a plurality of evaluation character strings in the recognition target object registered in a storage unit;
Performing character recognition on the partial image in the predetermined area, and determining a relationship between the character string recognized in the predetermined area and the evaluation character string in the recognition object;
A display control step for displaying whether or not characters can be recognized for at least one of the plurality of axes indicating the posture of the rectangular recognition target body from the relationship;
Character recognition support method to execute.