JPH0952476A - Paper for making drawing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain paper for making a drawing which is formed so as to prevent a reference line at making the drawing from becoming an obstacle at reading. SOLUTION: Determining marks B and C for detecting a position or an inclination of a paper printed with a color which is not to be dropped out, a drawing fill-in lattice A printed with a color which is to be dropped out, and a fill-in box D for giving drawing additional information printed with a color to be dropped out are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawing sheet for inputting an image through an image scanner.

In particular, for an image input through an image scanner, automatic detection of the position, direction, inclination, and scale of a drawing sheet (hereinafter simply referred to as sheet) and automatic addition of additional information to individual drawings. The present invention relates to a drawing creation sheet that enables

[0003]

2. Description of the Related Art When recognizing an image input from an image scanner, it is necessary to detect the inclination of a sheet, align the sheet, and the like. In many cases, a grid-like reference line is printed on the paper for the purpose of writing, and in the past, this reference line was directly used for detecting the inclination of the paper.

[0004]

However, since the reference line and the written drawing are observed in an overlapping manner, it is necessary to separate them. This processing not only causes processing complexity, but also causes a significant reduction in recognition accuracy. In order to avoid this, there is also a method of separating the two by making the colors of the reference line and the input drawing different from each other, but there is a problem that the processing amount becomes large. Also, some additional information is always required in the drawing. This additional information includes, for example, a number for identifying a drawing in the case of a building drawing, and information such as the identification and orientation of the first floor and the second floor in a floor plan.
While performing automatic recognition of drawings, conventionally, such information has been input by complicated manual operation.

It is an object of the present invention to solve the above-mentioned problems caused by a reference line which is a standard for writing and to provide a drawing preparation sheet to which drawing additional information can be automatically given.

[0006]

A drawing sheet according to the present invention is printed in a color that is not dropped out and is printed in a color that is dropped out and at least two determination marks for detecting the position and inclination of the sheet. And a drawing frame for drawing additional information printed in a color to be dropped out.

[0007]

In the present invention, the finished drawing sheet is
Although read by the image scanner, none of the grid lines in the grid part where the drawing is drawn are detected by the image scanner. On the other hand, the judgment mark is read by an image scanner to detect the paper position and the inclination.

Further, although the entry frame itself is dropped out, the drawing additional information entered in the entry frame is read by the image scanner and used for necessary processing.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawing sheet according to the present invention can be used to create various drawings such as equipment drawings showing connection relations such as wiring and floor plans showing space arrangement of floor plans. In the following description, an embodiment of the present invention designed for inputting a floor plan will be described with reference to FIGS. 1 and 2 first.

In FIG. 1, A is a dropout color, for example, a grid printed in blue, B and C are non-dropout colors, for example, two determination marks printed in black, and D is dropout. It is an entry frame printed in color.

The grid A is for giving the writer a guide of the writing position, and the color to be dropped out,
That is, the image is printed in a color that cannot be detected by the image scanner. In this embodiment, as shown in a partially enlarged view of FIG. 2, the lattice A is a thick main lattice line (for example, 0.91c).
1) and the sub-lattice lines 3 between the main lattice lines 1.

Further, main grid auxiliary lines 2 are provided on both sides so as to sandwich the main grid line 1. The main grid auxiliary line 2 indicates the limit of protrusion in the case of handwriting.
This is convenient when handwriting a figure based on. Therefore, the main lattice line 1 and the main lattice auxiliary line 2 are integrated to form the lattice A.

FIGS. 3A to 3D show another embodiment of the present invention, which is a partially enlarged view of the lattice A. As shown in FIG.

FIG. 3A shows an embodiment in which the main lattice auxiliary line 2 shown in FIG. 2 is omitted and the main lattice lines 1 are divided into two by the sub lattice lines 3, and FIG. 3B is the same. It is an example divided into four. FIG. 3 (c) is an embodiment in which the aspect ratio of the lattice A is 1: 2, and FIG. 3 (d) is an embodiment in which only the main lattice lines 1 are used.

As described above, the arrangement of each grid line is arbitrary as long as it can be determined from the grid marks, and FIG.
Not only those shown in (a) to (d), but the main lattice may be divided into three. It is also possible to use different grids in the vertical and horizontal directions.

The judgment marks B and C are for detecting the position, scale, inclination, and direction of the grid A, and are printed in a color that does not drop out. In the example of FIG.
Three determination marks B and one determination mark C are provided. Of these four, using any two pieces of position information, the inclination, scale, and grid position of the drawing sheet, and the position of the judgment mark C (mark having a different shape from the other three points) are erected, Detects the orientation of the paper, including the upside-down judgment that is possible for inverted and semi-transparent paper. In this embodiment, three judgment marks B and judgment marks C are used.
However, the present invention can be carried out if there are two marks, and the number is arbitrary as long as there are more than two marks. However, when performing the front / back determination of the paper, two types of determination marks having different shapes are required as shown in the embodiment. The shape of the determination mark itself is not particularly limited, and various shapes such as circle, triangle, and cross can be used. The entry frame D is for automatically recognizing the drawing additional information, and is printed in a color to be dropped out. In the embodiment, it is provided as a frame for giving the floor number information of the floor plan, and it is possible to realize from the 99th floor to the 99th floor above the ground by combining each row. + Is above ground, -is below ground, and the two-column frame that follows it represents a two-digit number. These drawing additional information is arbitrary as long as it automatically recognizes information in drawing units.For example, by printing a circular entry frame and checking the north direction of the drawing on the circumference, the orientation on the drawing can be determined. Can be given. Further, by printing the options in dropout color and checking the corresponding position, an additional information frame such as scale and drawing classification can be provided. Furthermore, the character recognition process can be used to obtain the character information of the person in charge of the drawing.

Next, an example of the usage of the drawing sheet of the present invention will be described.

The drawing is filled in by utilizing the portion of the grid A using FIG. Then, the necessary items are entered in the entry frame D. Figure 4 shows an example in which the floor plan for the second floor is entered. When this is read by an image scanner (not shown), the grid A and the entry frame D printed in the color to be dropped out disappear, and therefore the entered drawing, the judgment marks B and C, and the drawing additional information remain. , As shown in FIG.

In the above reading process, the judgment marks B,
The inclination, scale, position and direction of the paper are detected from the reading position of C, and if there is any inconvenience, it is automatically corrected or an alarm is issued.

For example, in FIG. 1, the position of the judgment mark C at the upper left of the paper is the origin (0, 0), and the judgment mark B at the lower left is shown.
Is right below the origin (X coordinate is 0), and the upper right judgment mark B
Is the position (Y coordinate is 0) which goes straight from the origin to the right. When the coordinate system is reconstructed with the upper left judgment mark C input from the image scanner as the origin, the lower left judgment mark B
The inclination of the paper can be detected and corrected depending on how many X-coordinates of 0 deviate from 0. For the scale, the difference between the scale of the actual data and the scale of the data obtained through the image scanner can be found by finding the distance between the determination marks in the vertical and horizontal directions, and the correction can be made. After correcting the tilt and scale, the grid position can be determined. The direction can be detected, for example, by setting the lower right judgment mark B to have a different shape. However, for the position of the direction detection mark from the origin, one of the distances in the X direction and the Y direction is increased. The position of the direction detection mark is detected, and the position is at the lower right, and if the position is correct, it is the correct position. Other cases such as 180-degree inversion, 90-degree inversion on both sides, and inside-out can be detected.

In the above embodiment, the same three judgment marks B are used, but it goes without saying that they may have different shapes. Further, the structure of the lattice A can be modified in various ways such as the line interval and the number of lines. Furthermore, the reason why the interval of the main lattice lines 1 is 0.91 cm is that the interval, which is the basic unit of the floor plan, is 0.91 cm. Therefore, an appropriate interval is set according to the purpose. can do. Also, the wire diameter can be arbitrarily selected.

[0022]

As described above, according to the present invention, at least two judgment marks for detecting the position and inclination of a sheet printed in a color not dropped out, and drawing drawings printed in a color dropped out. Since it is equipped with a grid for drawing and an entry frame which gives additional information of the drawing printed in the color to be dropped out, the inclination, scale, position, and direction of the drawing paper can be detected, and at the same time, when the image is scanned by the image scanner Since the grid is dropped out, the above-mentioned problems in the recognition processing are solved. In addition, by providing additional information for each drawing in the entry frame, there is an advantage that the manual operation which is performed after automatic recognition is not necessary.

[Brief description of drawings]

FIG. 1 is an overall view showing an embodiment of a drawing sheet of the present invention.

2 is an enlarged view of a portion of the grating of the embodiment of FIG.

FIG. 3 is an enlarged view of a part of a lattice according to another embodiment.

FIG. 4 is an overall view showing a state in which a floor plan and additional drawing information are entered on the drawing creation sheet of FIG.

FIG. 5 is a diagram for explaining a state in which FIG. 2 is read by an image scanner.

[Explanation of symbols]

 A grid B Judgment mark for grid position C Judgment mark for paper direction D Entry frame for additional drawing information 1 Main grid line 2 Main grid auxiliary line 3 Sub grid line

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[Procedure amendment]

[Submission date] October 8, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

FIG. 5 is a diagram for explaining a state in which FIG. 4 is read by an image scanner.

Claims (1)

[Claims] 1. At least two judgment marks printed in a color that is not dropped out to detect the position and inclination of a sheet, a grid for drawing drawings printed in a color that is dropped out, and a color that is dropped out. And a drawing frame for giving the additional information of the drawing printed in 1.