JPH0290191A - Map information displaying device - Google Patents

Abstract

PURPOSE:To express three-dimensional topography from two-dimensional map information by reading color information classified by colors and preparing three-dimensional map information data based on the altitude information corresponding to the color information, and then, displaying the data on a monitor. CONSTITUTION:An image scanner 1 optically reads a map colored with different colors by altitudes and loads the information in a frame buffer 3 after converting the information into electric signals. The map information signals loaded in the buffer 3 are recorded on an optical disk 2 and filed. A three- dimensional image processor 4 reads out the color information of appropriate sample points from the memory 3 and prepares a bird's-eye view from a necessary visual point or eyes based on the altitude information corresponding to the color information. Then the processor 4 displays a three-dimensional topographical map on a CRT monitor 7 through an LUT 6. Therefore, a three- dimensional topographical map can be obtained and displayed easily from a two-dimensional map information file without using any separate additional information processing system.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a map information display device, and in particular to a map information display device capable of displaying three-dimensional information and useful for management of aircrafts and rescue systems. Regarding.

(Prior Art) Conventionally, in this type of map information display device, two-dimensional data read out from an optical disk on which two-dimensional map information is stored in advance is loaded into a frame memory, and this loaded two-dimensional data is used as needed. By superimposing it with graphical information,
It was displayed as a two-dimensional image on the monitor. In an aircraft control or rescue instruction system using such a map information display device σ, an operator can check the aircraft on a flat map displayed as this two-dimensional data, control the aircraft,
It was to give rescue instructions.

(Problems to be Solved by the Invention) In the conventional map information display device described above, map information is displayed on the screen as two-dimensional information, so three-dimensional information, that is, three-dimensional topography is expressed on the displayed map. Operators had to control the aircraft and issue rescue instructions without fully grasping the three-dimensional terrain, and there was a risk of misperceptions and judgments at times, which was a problem. .

Means for Solving Problem C) A map information display device according to the present invention reads out necessary map information from an optical disk in which a map image is stored and displays it on a monitor, wherein the optical disk includes: Map information color-coded by altitude is recorded, the color-coded color information is read, three-dimensional map information data is created based on the altitude information corresponding to the read color information, and is displayed on the monitor.

(Example) Next, the present invention will be explained with reference to the drawings.

FIG. 1 is an overall configuration diagram of an example of a map information display device according to the present invention.

The image scanner 1 optically reads a map color-coded by altitude, converts it into an electrical signal, and loads it into the frame memory T3. The map information signal loaded into the frame buffer 3 is recorded on the optical disc 2 and filed. Here, in the conventional device, after retrieving the necessary map from the optical disc 2 and loading it into the reading frame memory 3, the L
Displaying two-dimensional map information (for example, FIG. 2) on the CRT monitor 7 via the UT 6 In the present invention, in order to display three-dimensional topographical information, the three-dimensional image processor 4 inputs appropriate data from the frame memory 3. Sample points (H!! Contour lines etc. in the figure)
reads out color information, generates a bird's-eye view map as shown in FIG. do.

(Effects of the Invention) As explained above, the present invention obtains sample values of altitude information from color-coding using contour lines etc. of a map, displays three-dimensional information based on this altitude information, and requires separate information processing for this purpose. This has the effect of making it possible to easily obtain and display a 3D topographic map from a 2D map information file without requiring any additional system.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the overall configuration of a map information display device according to the present invention, FIG. 2 is a diagram showing map information held in the frame memory 3 in FIG. 1, and FIG. 3 is a diagram showing the frame memory 5 in FIG. It is a bird's eye diagram maintained in 1... Image scanner, 2... Optical disk device,
3... Frame memory, 4... Three-dimensional image processor, 5... Frame memory, 6... LUT, 7
...CRT monitor.

Claims (1)

[Claims] In a map information display device that reads out necessary map information from an optical disc storing map images and displays it on a monitor, the optical disc records map information that is color-coded according to altitude, and the color-coded color A map information display device characterized by reading information, creating three-dimensional map information data based on altitude information corresponding to the read color information, and displaying the data on the monitor.