JPH0766441B2 - Line drawing input device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] In a line drawing input device for inputting a line drawing from an input device such as a digitizer, when a newly input line drawing overlaps with a line drawing already stored, the line drawing is stored instead of two overlapping line drawings. The line drawing to be determined is determined, which allows the line drawing to be easily corrected by writing in a line.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for inputting a line drawing from an input device such as a digitizer, and more particularly to a line drawing correction method.

In a device for inputting a line drawing from a digitizer or the like, the amount of line drawing to be corrected is large because it can be freely drawn by handwriting.

Therefore, a means for easily correcting the line drawing is required.
In particular, for a character that is a special example of a line drawing, if the recognition device fails in correct reading, a means for easily correcting the original line drawing character is required.

[Prior Art] FIG. 5 is a diagram showing an example of a correction procedure by a conventional line drawing input device.

Enter the line drawing.

Specify the image to be deleted.

Erase the image (by the system).

Enter a new picture.

In the above description, the term “image” refers to a single element from pen touch to pen off when writing a line drawing with a digitizer or the like.

As described above, conventionally, the operator had to perform the following procedure in order to correct the input image.

(1) Designate the image to be modified.

(2) Input the image to be stored instead of the image to be corrected.

FIG. 6 is a block diagram showing a configuration of a conventional line drawing input device.

The image coordinate data input from the input unit 11 including a digitizer is sent to the input control unit 12. Normally, it is stored in the line drawing storage unit 13 as it is and displayed on the display unit 14.

When erasing is designated by the erasing designation unit 15, the coordinate data is sent to the erasing unit 16 to identify the designated image, and the line drawing storage unit
The data of the image is deleted from 13, and the display of the image is also deleted on the display unit 15.

When inputting an image in place of the erased image, it is input from the input unit 11 and is passed through the input control unit 12 without change to the line drawing storage unit 13
Stored in.

[Problems to be Solved by the Invention] As described above, the conventional line drawing correction method has the following problems.

It is necessary to specify the image to be corrected.

Even if you modify only a part of the image, you need to rewrite the entire image.

The present invention is intended to provide a novel line drawing input device that solves the above conventional problems.

[Means for Solving Problems] FIG. 1 shows a principle block diagram of a line drawing input device of the present invention.

In the figure, reference numeral 1 is an input unit including a digitizer and the like.

A temporary image storage unit 2 stores the input coordinate data of one image.

A line drawing storage unit 3 stores line drawing data.

Reference numeral 4 is a display unit for displaying the coordinate data of the line drawing stored in the line drawing storage unit 3.

Reference numeral 5 denotes a line drawing processing unit that performs image correction processing. The line drawing processing unit 5 collates the image coordinate data stored in the temporary image storage unit 2 with the image coordinate data stored in the line image storage unit 3 so that some of the images overlap. It is determined whether or not the line drawing storage unit 3 is removed from the line drawing storage unit 3 according to a predetermined rule based on the determination result.
To store or merged images.

[Operation] The coordinate data of the image input from the input unit 1 is stored in the temporary storage unit 2
Stored in.

Next, the coordinate data in the temporary image storage unit 2 and the line image storage unit 3
The line drawing processing unit 5 collates the coordinate data of the inside image to determine whether there is an overlap. The following processing is performed according to the determination result.

(1) When there is no overlap: The coordinate data of the image stored in the temporary image storage unit 2 is stored in the line image storage unit 3 and displayed on the display unit 4.

(2) When there is an overlap: The image stored in the temporary image storage unit 2 is A, and the overlapping surface in the line image storage unit 3 is B.

(2.1) When A is included in B or B is included in A: B is deleted from the line drawing storage unit 3 and A is stored. Display unit 4
Also in B, B is erased and A is displayed.

(2.2) Others: B is deleted from the line drawing storage unit 3, and the image obtained by merging B and A is stored in the line drawing storage unit 3. The display unit 4 also erases B and displays an image in which B and A are merged.

FIG. 2 is a diagram showing an example of a correction procedure according to the present invention.

In the figure, [Example 1] is a case where A is included in B
Is deleted and A is stored and displayed.

[Example 2] is a case where B is included in A, B is deleted,
In this example, A is stored and displayed.

[Example 3] is an example in which B is deleted and an image obtained by merging B and A is stored and displayed.

As described above, according to the present invention, the part to be deleted and the part to be stored and displayed are determined according to the result of the collation between the newly input image and the image already stored, and the correction work is facilitated.

[Embodiment] FIG. 3 is a conceptual diagram showing a configuration of a line drawing processing unit in an embodiment of the present invention.

The temporary image storage unit 51 stores the coordinate data of one image in the line image storage unit 3.

The distance calculation unit 52 obtains the minimum value of the distance between one coordinate stored in the temporary image storage unit 2 and the coordinate stored in the temporary image storage unit 51.

The threshold determination unit 53 determines that the minimum value of the distance calculated by the distance calculation unit 52 is less than or equal to a predetermined threshold.

The proximity point storage unit 54 stores a pair of coordinates determined by the threshold value determination unit 53 to be equal to or less than the threshold value.

The above processing is performed for all the coordinates stored in the temporary image storage unit 2.

After the above process is completed, the overlap relation determining unit 55 determines the overlap relation between the two images from the coordinate data in the close point storage unit 54.

Specifically, when the proximity points stored in the proximity point storage unit 54 are continuous for a certain length L (> 0) or more, it is determined that they overlap.

FIG. 4 is a conceptual diagram showing an example of proximity point detection and overlap determination in one embodiment of the present invention.

The line drawing changing unit 56 changes the deletion, merge or the like according to each case described in the section [Operation] based on the judgment result of the overlapping relation judging unit 55, and stores the change result in the line drawing storing unit 3. .

[Effects of the Invention] As described above, according to the present invention, an image to be corrected in a line drawing can be corrected by simply "writing" on a digitizer or the like. Has a great effect.

[Brief description of drawings]

FIG. 1 is a block diagram of the principle of the present invention, FIG. 2 is a diagram showing an example of a correction procedure according to the present invention, FIG. 3 is a diagram showing a configuration of a line drawing processing unit in an embodiment of the present invention, and FIG. FIG. 5 is a conceptual diagram showing an example of proximity point detection and duplication determination in one embodiment of the invention, FIG. 5 is a diagram showing an example of a conventional correction procedure, and FIG. 6 is a block diagram showing a configuration of a conventional line drawing input device. In the drawing, 1,11 is an input unit, 2 is a temporary image storage unit, 3,13 is a line image storage unit, 4,14 is a display unit, 5 is a line image processing unit, 12 is an input control unit, 15 is an erase designation unit, Reference numeral 16 is an erasing unit, 51 is a temporary image storage unit, 52 is a distance calculating unit, 53 is a threshold value determining unit, 54 is a proximity point storing unit, 55 is an overlapping relation determining unit, and 56 is a line drawing changing unit.

Claims (1)

[Claims] 1. An input unit (1) for inputting a line drawing, a temporary image storage unit (2) for temporarily storing coordinate data for one image input from the input unit (1), and the temporary image storage unit (2). ), A line drawing storage unit (3) for storing coordinate data of all the images of the line drawing and a display unit (4) for displaying the coordinate data of all the images stored in the line drawing storage unit (3). In a line drawing input device provided, in the temporary image storage unit (2) for correcting the coordinate data of the image stored in the line drawing storage unit (3) and the line image correction stored in the line image storage unit (3). When it is determined that there is an overlap, it is checked whether or not a part of the image overlaps with the stored coordinate data of the image, and (a) the image stored in the temporary image storage unit (2). Is included in the overlapping images in the line drawing storage unit (3), (b) the line drawing storage unit ( In the case where the overlapping image in () is included in the image stored in the temporary image storage section (2), and (c) when the two images have no inclusive relation, the line drawing according to each case of Deletion from storage (3),
A line drawing input device characterized by comprising a line drawing processing unit (5) for storing in the line drawing storing unit (3) or storing a merged image.