JPS58155483A - Pattern recognizing device - Google Patents

Abstract

PURPOSE:To obtain high-precision pattern data, by recognizing additional information added to a pattern on a drawing to correct the shape, the size, etc. of the pattern. CONSTITUTION:Lines written with a thickness of additional information are detected from a linear pattern on the drawing by a thickness calculating circuit 7 and are taken out. Arrows on the drawing are obtained by an arrow detecting circuit 8. Character information is read by a character recognizing processor 9. Characters are taken out in a character cutting circuit 10 one by one and are recognized in a character recognizing circuit 11. When characters are cut, a character is detected as an isolated region, which is separated from patterns and has a certain size, and is taken out. In respect to an ordinary pattern, coordinates of points of four corners are obtained, and the pattern is encoded as segments between these points. A position of the ordinary pattern to which additional information written with a thickness different from that of the ordinary pattern should be added is obtained on a basis of obtained coordinate information.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a type 1 recognition iron device for inputting the shape and size of type 1 with high accuracy.

Although there are few practical examples of conventional figure recognition devices for recognizing figures, it is generally considered to be II& shown in FIG.

In Fig. 1, the drawing is continued from (1) to obtain a binary image data. (2+ is a figure recognition processor that processes the binary image data and recognizes the figures in the drawing, and the image memory ( 3) and thinning circuit (drawing and point sequence data memory C
5), encoding circuit (111a from 61) 7.

Below is this figure lla! The operation of the textile device will be explained using the processing data shown in FIG. FIG. 2 (←) is a diagram showing an original image, (b) is a diagram showing binary image data, and (C) is a diagram showing processing result data. The original image of 112 Cup (a) is the image input device shown in Figure 1 @
111, the 2mth ('') binary image data is obtained, and this is input into the image memory 01. A thinning circuit (41ij) processes this 2fL image data to obtain a sequence of points at the center of the line. The result of this processing is shown in FIG. 2(C), where the point marked with an x is the center point of the line.

This data is stored in a point sequence data memory (5)K.

This point sequence data is processed by the encoding circuit (6).

As a result, pl and p2 in FIG. 2(e). Each point of p3 is found, and the line segment between PI and P2 is P2. A code indicating that the space between P3 is a circular arc is obtained. As mentioned above, the figure-original 7 "rosetsusa recognizes the line segment and 2 arcs in the binary drawing data input by itself and obtains data representing the shape and size of 1 figure. Errors when writing with etc.,
The shape of the figure due to errors when finding the center of #.

In many cases, dimensions etc. cannot be determined due to accuracy. This invention was developed to eliminate this drawback, and it is possible to
The purpose is to input figures with high accuracy by writing additional information on dimensions using lines with a different thickness from those of normal figures, lines with arrows, and characters, and by recognizing this and correcting the figure data. It is.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 3 shows a configuration 1 of an embodiment of a figure recognition device according to the present invention. In the figure (11 to (6)) are the same as in FIG.

+71 ij thickness calculation circuit, (8) is arrow detection circuit, C
9) is a character recognition processor consisting of a two-character extraction circuit and a character recognition circuit aυ. This is an aSU data correction circuit. FIG. 4 is one of the input drawings of the figure g recognition device of this invention.
This is an example. In FIG. 4, αsFi is the target figure drawn in normal thickness.

aa hAdditional information written in a thickness different from that of the target figure, asFi arrow, (2) is character information.

First, in a line diagram in the drawing, a circle thickness calculation circuit (71) detects and extracts a circle drawn with the thickness of additional information. An example of a thickness calculation method is shown in FIG.

In the figure ff'1liji! For iI, find one line in three directions: vertical, horizontal, and fJ+, and use the minimum value as the thickness here. Next, the arrow in the drawing is the arrow detection circuit (8
). The method for this is shown in section ＠-.

The uh arrow in the figure indicates a circular sensor with a radius shorter than the length of the blade of the asFi arrow. When the data on the circle of the sensor circle detects the three lines of the arrow (C) line and the two blades, and the angle θ between each two lines is the angle defined by the arrow. Detected as an arrow. Next, the character information @Qs is read by a character recognition processor (9). This is a character cutting circuit that first extracts the characters one by one, then a character recognition circuit (II) that cuts out the characters and detects the characters as isolated areas of a certain size that are separated from the shapes. This is done by issuing the following.

Character recognition is performed by using a dictionary containing all character patterns and comparing all of them with the inputted text, thereby recognizing the characters as if they were similar to a dictionary.

Also, the normal figure U is coded in the same way as in the conventional method. Here, since there is a 1j rectangle 1゛, the string marks of the square points are found and can be coded as one minute between these points.

These pieces of information are sent to the data modification circuit (2) to modify the data. Determine to which part of the regular figure the additional information written in a thickness different from that of the connected figure is to be added based on the obtained coordinate information, and add the additional information with an arrow (C) based on nearby text information. υ Correct the coordinate information of a normal figure. Here, the rectangle tm is a four-point horizontal seat W
Correct I. For example, if the distance between 4 points is 105 and the 1-character information is 110, then 2.
Correct the horizontal position of the point @'i+5.

In the above, an example was given in which information about eight strings with arrows having a different thickness from the target figure was used as the additional information, but any other symbols, dotted lines, etc. may be used.

As described above, in the figure recognition device according to the present invention, additional information added to figures in a drawing is aI! Since the shape, size, etc. of the figure are corrected by this process, it is possible to obtain figure data with a good degree of variety.

[Brief explanation of the drawing]

Fig. 1 #-j A cross-sectional diagram of a conventional figure recognition device, Fig. 2 6 Example of processing data 11 Fig.
**a of an embodiment of 1M, Fig. 4 1 Goko V] A diagram of an example of an input drawing of the figure recognition device according to the invention, Fig. 5 is an explanation of the method for determining the thickness - 2 Fig. 6 is an arrow structure This is an explanation of how to get out. In the figure, (1) is an image input device, and (2) is a shape recognition fiber 10.
Nanatsusa, (31 is image memory, (41 is thinning circuit, (
5) is a point sequence data memory, (61 lamp coding circuit, 17
1t! Thickness calculation circuit, 181ii arrow detection circuit, (Shunha character g fiber processor, Q! is character cutting circuit, α11 is character recognition circuit am and data correction circuit, u/a target euhedral,
04 is additional information, - is arrow, Qll is character information, a?
l is a line or a circle. In the figures, the same or corresponding parts are given the same symbols. Agent Makoto Kuzuno

Claims (1)

[Claims] In a figure ga' device that recognizes one form f in a drawing, additional information written as a special note that is different from the target figure, additional information with an arrow, and character information are provided on the target figure, and these are &l#1 and means for correcting the transliteration position data indicated by the additional information drawn with lines of different thickness and the additional information having an arrow, using numerical values indicated by the character information. The figure recognition device according to No. 1 JJ.