JPH011062A - Input data editing method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] This invention provides a method for editing drawings using a design support system (hereinafter referred to as CAD) and computer mapping.
Image data needs to be modified.

In order to do this efficiently, a storage unit is provided that stores a plurality of eraser boards for drawing corrections, and the drawings are corrected using the corresponding eraser boards.

[Industrial application field]

The present invention relates to an input data editing method in a graphic input device used for CAD and the like.

To automatically input a drawing, first read the drawing using a scanner, then the read image information is binarized and converted into scanning line data (
(hereinafter referred to as raster data). Next, convert the raster data to vector data. This is CA
This is because the D system and computer mapping system handle figures as vector data.

Finally, the vectorized data is converted into a format suitable for the user's CAD system and computer mapping system, and the data is passed to the CAD system and computer mapping system. The target drawing is a map.

Wiring diagrams 1 Circuit diagrams, architectural/mechanical blueprints, clothing patterns, etc.

This automatic input of drawings does not digitize the drawings in the form requested by humans, and stains, dust, etc. occur in the image data. Therefore, it is necessary to interactively make corrections by removing stains and dirt and erasing extra lines. Therefore, there is a need for an input data editing method that requires a short correction processing time.

[Conventional technology]

FIG. 4 is a process diagram for explaining a conventional input data editing method. Drawing 1 is read by scanner 3 and the digitized raster data is stored in image buffer 4. This raster data is transferred to display memory 7. Based on this raster data, image data is displayed on a display section (hereinafter referred to as CRT) 11.

Assuming that this image data includes a G section consisting of unnecessary line segments 9 as described in the display memory 7, it is necessary to erase the G section. The operator corrects the image buffer 4 by scanning an erasing means, such as an erasing key on a keyboard, on the CRT 11 surface.

This corrected raster data is vectorized by a vectorizer 5 and stored in a graphic buffer 6 as vector data. This vector data is displayed on the CRT 11 via the display memory 7-1 to confirm the modification. If it is OK, it is stored in the disk file 10. If it is found to be defective, repeat the above correction.

The control unit 12 is in charge of controlling the drawing input device 20 described above.

[Problem that the invention seeks to solve]

As mentioned above, in conventional image data correction, an operator erases unnecessary parts by running a cursor, for example. Therefore, there is a problem in that correction requires time and effort.

In view of the above-mentioned conventional situation, it is an object of the present invention to provide an input data editing method that can efficiently modify drawings.

Means for Solving Problem C] As shown in the principle diagram of FIG. The drawing input device 2 is composed of the display memory 7, the CRT 11, and a memory section, ie, an eraser library 8, which stores a plurality of eraser board data for modifying drawings.

[Effect]

Display the drawing on the CRT 11, and when there is an unnecessary line segment 9, call up multiple erasers from the eraser library 8, select the eraser that is suitable for erasing, move this eraser, and erase the unnecessary part. Overlay on. Convert the area of this eraser board to the background color and erase unnecessary parts. Therefore, efficient erasing becomes possible.

〔Example〕

FIG. 2 is a block diagram showing an embodiment of the present invention, and the same parts as in FIG. 4 are denoted by the same reference numerals, and the explanation thereof will be omitted.

A feature of the present invention is that an eraser library 8 is provided which stores a plurality of erasers for modifying drawings.

This invention will be explained with reference to the flowchart shown in FIG. The drawing 1 is read by a scanner 3, and the raster data digitized by the scanner 3 is stored in an image buffer 4. This last data is displayed on the CRTll via the display memory 7. That is, this is the process (a) shown in FIG. Subsequent processing is indicated by alphabetic characters in parentheses.

The operator inspects the displayed image data for the presence or absence of unnecessary line segments 9 (bl. If there is an unnecessary line segment, for example, part G, the eraser library 8 is called up and displayed on the screen of the CRT 11. Of course, , which is displayed at the bottom of the CRT display screen and is a separate area from the display of image data of drawings.

A character eraser board g that matches the unnecessary line segment 9 is selected, and this character eraser board g is moved to overlap the unnecessary line segment G (d).

Erase unnecessary line segments using this eraser board g as the background color (e
). The image buffer 4 becomes the corrected raster data (fl. Of course, the image buffer 4 will not be corrected unless unnecessary portions are removed in the process (b).

This raster data is vectorized by the vectorization unit 5 (g). The vectorized vector data is stored in the graphic buffer 6 (h). Based on this vector data, image data is displayed on the CRT 11 via the display memory 7-1. When it comes to the required image data (i),
The vector data is stored on the disk 10 (f). If the required image data is not obtained, the processing is repeated again starting from step (C).

〔Effect of the invention〕

As is clear from the above description, according to the present invention, when editing input data using a drawing input device, correction work can be easily performed and the processing time can be shortened, which is extremely effective.

Note that the operations (d) and (ill) are performed as follows.

In order to select the eraser board g that matches the unnecessary line segment 9 from the eraser board library 8 displayed on the screen of the CRT 11, the operator operates the cursor keys on the keyboard 30 and moves onto the eraser board g. let At this time, the keyboard 30
Upon receiving the signal sent from the eraser board library 8,
The eraser board library 8 sends the data of the eraser library 8 to the display memory so that the pattern of the eraser board g is superimposed on the unnecessary line segment 9 of the display memory 7. Such a data transfer operation is performed in the data operation section of the eraser board library 8.

In such a state, the eraser board g is displayed on the screen of the CRT 11, superimposed on the unnecessary line segment 9. Next, the operator moves the cursor onto the superimposed eraser board g, and then presses a function key on the keyboard 30 provided for erasing unnecessary line segments. In response to signals sent from the keyboard 30 in response to these key operations, the data operation unit in the erasure temporary library 8 erases unnecessary line segments in the display memory 7.

The data operation unit in the erasing board library 8 contains a group of commands for performing the aforementioned data transfer and erasing unnecessary line segments.
This command is activated in response to a stored signal sent from the keyboard 30 when a key is pressed, and data transfer and erasure of unnecessary line segments are performed.

[Brief explanation of the drawing]

Fig. 1 is a principle diagram of the present invention, Fig. 2 is a block diagram showing an embodiment of the present invention, Fig. 3 is a flowchart for explaining the present invention in detail, and Fig. 4 is a conventional input data editing method. FIG. 2 is a block diagram for explaining. In the figure, 1 is the drawing, 2 is the drawing input device, 3 is the scanner, 5 is the vectorization unit, 8 is the eraser board, 4 thick sheets, 44 color mouth ears ^ - Soon example 1 7 allo 7 Figure 2 O A May I heavy work f = Inkstone [L Dameno flowchart knowledge 6 human power 'tanri 4 畢 resident ° S theory dust jH = drunkenness 7 r Jw 7 Q
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Claims (1)

[Claims] A drawing input device comprising a scanner (3) for reading a drawing (1), a vectorization unit (5) for vectorizing the read drawing data, and a display unit (11) for displaying image data. In the device (2), the drawing input device (2) is provided with a storage section (8) storing eraser board data for a plurality of drawing corrections, and the display section (
11) An input data editing method characterized in that the eraser board data is selected when displaying and correcting image data, and erasing is performed using the selected eraser board.