JPH0434350B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a map imaging method for imaging each of a plurality of segmented maps from a map original using a camera.

Prior Art Recently, when driving a car in an unfamiliar area, etc., in order to provide appropriate guidance so that the driver does not deviate from the planned driving course and get lost, a distance detector detects the vehicle speed as the car travels. The current position of the vehicle on two-dimensional coordinates is determined from each detected value by successive calculations, and the results are calculated. The road map of the driving area is displayed on a display screen that is stored in memory and displayed in continuous point information that changes every moment, allowing the driver to confirm the current location. A driving route display device has been developed.

For such driving route display devices,
For example, each map of a large number of regions is converted into data in advance and stored in a storage medium such as a laser disk device in file units, and the necessary maps are selectively read out using the storage medium playback device and displayed on the screen. I'm trying to do that.

However, conventionally, a large original map is divided into multiple map sections and images are captured using a video camera to obtain data for each section map. It is difficult to position the video camera, making it time-consuming to take pictures.

At that time, in order to capture images so that some areas overlap in order to make the mutual positional relationship clear for each section map that is adjacent to the top, bottom, left and right, the relative positional accuracy of each section map to be imaged is calculated. It is becoming difficult to

Purpose The present invention was made in consideration of the above points, and
A map system that makes it easy to position the camera and improves the positional accuracy of imaging each segmented map when dividing a single map original into multiple segmented maps and capturing images using a video camera. The present invention provides an imaging method.

Configuration In order to achieve the object, the present invention provides a reference position mark on the map original in advance when the video camera divides the map original into divided maps and images the map, and superimposes a superimprint having a figure corresponding to the reference position mark. Using a pause device, the reference position mark of the sectional map displayed on the monitor screen is superimposed on the figure, and the sectional map is imaged.

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

FIG. 1 shows a specific system configuration example for implementing the map imaging method according to the present invention.
The superimpose device 5 is used when the map original plate 2 set on the manuscript table 1 is sequentially imaged by the video camera 3 for each divided map, and the video signal obtained by the imaging is sent to the VTR 4 for recording. The user can align the sectional map imaged by the video camera 3 while watching the screen of the monitor television 6.

At this time, in the present invention, as shown in FIG. 2, the map original 2 is provided with matrix-like reference lines Lx and Ly in the X and Y directions in advance. that reference line
The matrix intervals of Lx and Ly are the segmented maps A1, A2, A3, . . . captured by the video camera 3.
is set according to the size of the reference line Lx,
Ly is the center line of each section map A1, A2, A3, . . . .

Further, in the present invention, as shown in FIG. 3, the superimpose device 5 is provided with a figure P corresponding to the reference lines Lx and Ly provided on the map original 2, and for example, the sectional map A1 is viewed by the video camera 3. When taking an image, the operator can superimpose the reference lines Lx and Ly in the taken map image onto the figure P as shown in FIG. 4 while looking at the screen of the monitor television 6. ing.

Specifically, for example, with the video camera 3 fixed, each movement in the X and Y directions on the secondary surface of the manuscript table 1 on which the map original 2 is set and θ
The video camera 3 can be rotated freely by each adjustment handle (not shown).
The X, Y, and θ positioning adjustments of the divided map imaged by the map are made.

As described above, according to the map imaging method according to the present invention, each section map A1, A2, A3 is
When each image is taken, the document table 1 is adjusted while watching the screen of the monitor television 6 so that the reference lines Lx and Ly provided on the map original 2 are superimposed on the figure P on the superimpose device 5. By simply performing this, the relative positioning of the video camera 3 and the map original 2 can be easily performed with high precision.

In this case, the document table 1 may be fixed, and the video camera 3 may be moved relative to the document table 1 in X, Y, and θ. Also map original version 2
Instead of providing reference position marks for each section map using matrix-like reference lines Lx and Ly, for example, V, +,
Another reference position mark such as an X shape may be provided, and the figure P in the superimpose device 5 may be set in accordance with the reference position mark.

When providing a reference position mark on the map original 2, the mark may be written directly on the map original 2, or it may be written in advance on the divided maps A1, A2, A3,...
A transparent film on which a reference position mark corresponding to the size of the reference position mark is printed may be superimposed on the map original plate 2. In addition, when converting the video signal of each section map output from the VTR 4 into a digital signal and storing it on a laser disk, etc., the shape and installation position of the reference position mark on each section map is already known. Through image processing, it becomes possible to easily remove the data of the reference position mark, and it becomes possible to obtain a reproduced image of the sectioned map without the reference position mark.

Effects As described above, in the map imaging method according to the present invention, when an original map is divided into a plurality of segmented maps and images are taken with a video camera, reference marks provided in advance on the original map and the camera side This has the excellent advantage that each section map can be imaged easily and with high positional accuracy simply by superimposing the figures set in the map.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of a system configuration for concretely implementing the map imaging method according to the present invention, FIG. 2 is a diagram showing a map original with matrix-like reference lines, and FIG. FIG. 4 is a diagram showing an example of a graphic set on the superimposing device, and FIG. 4 is a diagram showing an example of a monitor screen in which the reference line and the graphic on the imaged sectional map are superimposed. 1... manuscript table, 2... original map, 3... video camera, 4... VTR, 5... superimpose device, 6... monitor television.

Claims (1)

[Claims] 1 When the original map is divided into sections and images are taken using a video camera, a reference position mark is provided on the original map in advance, and a superimpose device with a figure corresponding to the reference position mark is used to display the image on the monitor screen. A method of photographing a map in which the reference position mark of the divided map to be mapped is superimposed on the figure and the divided map is imaged.