JPH0740292B2 - Image data filing method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an image data filing method for reading an original drawing such as a map with an image scanner and managing it as image data.

[Prior Art] FIG. 3 is an explanatory view showing a conventional image data filing method. In the figure, 1 is a map as an input original drawing, and 2 is a map 1 which is read and converted into image data by digital data. Image scanner, 3
Is image data output from the image scanner 2, 4 is a recording file such as an optical disk storing the image data 3, 5 is display image data read from the recording file and displayed, 6 is this display image data It is a display device such as a CRT display for displaying 5.

Next, the operation will be described. For example, in the case of filing and managing a map as image data, first, a map 1 as an original drawing is read by an image scanner 2 and converted into image data 3 by digital data. The image data 3 thus converted by the image scanner 2 is sent to the recording file 4, and is written and stored in a predetermined recording area. When it becomes necessary to display the image data 3 stored in this way on the display device 6, it is sent to the display device 6 as the display image data 5 read from the corresponding storage area of the recording file 4 and displayed there.

[Problems to be solved by the invention]

Since the conventional image data filing method is configured as described above, the writing / reading processing of the image data 3 is performed in the input original drawing unit, and the continuous display with the adjacent drawing, which is particularly problematic in a map etc. However, there was a problem that it was difficult to continuously display the original maps of different scales on the same scale with neighboring countries.

The present invention has been made in order to solve the above problems, and image data filing capable of easily performing continuous display with an adjacent country and continuous display with an adjacent figure at the same scale of original drawings of different scales. Aim to get a way.

[Means for solving problems]

The image data filing method according to the present invention enlarges / reduces the image data read from the original drawing to a scale for unified management, and then divides the divided image data into a certain size and stores it in a recording file. It is a unit.

[Action]

The image data filing method in this invention is
The original image is read and converted to image data by digital data, and the image data is enlarged or reduced to a scale that can be managed in a unified manner.Further, it is divided into fixed sizes to make divided image data. By storing as a unit in a recording file, continuous display of adjacent drawings regardless of the scale of the original drawing or continuous display of adjacent drawings of the same scale of original drawings of different scales is facilitated.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. First
In the figure, 1 is a map as an original drawing, 2 is an image scanner, 3 is image data, 4 is a recording file, 6 is a display device, and FIG. Therefore, detailed description will be omitted. In addition, 7 is a constant scale regardless of the size of each map 1 after the image data 3 read from the map 1 is scaled up by enlarging or reducing the scales of the maps 1 with different scales and managing them in a unified manner. The divided image data divided into the size of, and 8 is a map book composed of a plurality of maps, and each of the divided image data 7 is put in the squares with the map book 8 as one reference axis.

Next, the operation will be described. Here, FIG. 2 is a flow chart showing the procedure of the operation. When filing and managing the map 1 of different scales such as 1/1500 and 1/3000 as image data, first, the map 1 of 1/1500 is read by the image scanner 2 and converted into image data 3 by digital data (step ST1). . At this time, the resolution of the image scanner 2 is, for example, 16 dots / mm. Next, the image data 3 is enlarged or reduced (the drawing shows the case where the number of divided image data 7 is doubled or quadrupled) 16 dots / mm, 8 dots / mm, and 4 dots / mm Create image data with resolution (step ST2), divide 16 dots / mm image data into 16 parts, 8 dots / mm image data into 4 parts, 4 dots / mm image data into 1 part (without division) Then, the divided image data 7 having the same size are generated (step ST3).
The divided image data 7 is put in a square with the map book 8 as one reference axis, and is stored in the recording file 4 with this divided image data as a unit (step ST
Four). At this time, since the resolution of the 16-dot / mm image data is 4 dots / mm on the display, the 16-dot / mm divided image data 7 is in the reference axis of the 1/357 atlas. 8 dots / mm divided image data 7 is 1/750
The divided image data 7 of 4 dots / mm is put in the reference axis of the map book 8 of No. 1 and the reference axis of the map book 8 of 1/1500, respectively. Only 1/750 and 1/1500 atlas 8 are shown in FIG.

Next, the same applies to the case of 1/3000 map 1, step ST
At 1, the map 1 is read by the image scanner 2 and converted into image data 3. The resolution of the image scanner 2 at this time is also 16 dots / mm. Next, in step ST2, this image data 3 is reduced to 16 dots / mm,
After creating image data with a resolution of 8 dots / mm and 4 dots / mm, divide each into 16 in step ST3,
The divided image data 7 having the same size is generated by dividing the image data into four or one, and the divided image data 7 are stored in the recording file 4 in step ST4. Here, since the map 1 is 1/3000 and the scale is twice as large as 1/1500, the divided image data 7 is stored in the map book 8 as 1
6 dots / m when it is put in the square with one reference axis
The divided image data 7 of m is within the reference axis of the map book 8 of 1/750, and the divided image data 7 of 8 dots / mm is within the reference axis of the map book 8 of 1/1500. The divided image data 7 are put into the reference axes of the 1/3000 atlas 8 respectively.

When it is necessary to display the divided image data 7 stored in the recording file 4 on the display device 6 in this way,
It is read from the corresponding storage area of the recording file 4, sent to the display device 6 (step ST5), and displayed on the display device 6 (step ST6). In this case, the adjacent divided image data 7 are read out from the recording file 4 and displayed on the display device 6 as shown in the figure, so that the continuous display with the adjacent map and the continuous display with the adjacent map on the same scale of different scales are displayed. Can be easily performed.

In the above embodiment, the case of applying to the filing of map image data has been described, but it is applied to other original drawings such as a large mechanical drawing that cannot be displayed on the display device 6 at one time or a divided drawing. However, the same effect as that of the above-described embodiment may be obtained.

〔The invention's effect〕

As described above, according to the present invention, the image data read from the original image is scaled up / down to a scale that is unified and managed, and the image data is divided into a certain size to generate divided image data. Since it is configured to be stored in a recording file as a unit, it is possible to display a drawing divided into a plurality of scales, such as a map, in multiple scales, in any part, in a continuous display with adjacent scales and scales. It becomes easy to display continuously with adjacent maps on the same scale of different maps. Furthermore, when displaying, it does not require any special processing other than reading the divided image data.
There is an effect that a faster display response can be realized as compared with the conventional one.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an image data filing method according to an embodiment of the present invention, FIG. 2 is a flow chart showing its operation procedure, and FIG. 3 is an explanatory view showing a conventional image data filing method. 1 is an original drawing (map), 3 is image data, 4 is a recording file, and 7 is divided image data. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1. An image data filing method for storing image data, which is digital data read from an original drawing such as a map or drawing, in a recording file, and the image data read from the original drawing is expanded to a scale for unified management. Alternatively, the image data filing method is characterized in that after the image data is reduced, it is divided into a certain size to create divided image data, and the divided image data is used as a storage unit of the recording file.