JPH0528241A - Picture processor - Google Patents

Abstract

PURPOSE:To satisfactorily maintain the decoding of a character attached to a map at the time of reducing and displaying the picture of the map. CONSTITUTION:Picture information and character information are previously stored in a file 1 as different planes A and B. The reduction magnification n of the character as against the reduction magnification of the picture is designated to be n>m. The respective planes A and B are respectively reduction- processed in corresponding reduction processing parts 4 and 5 and a logical synthesis processing part 6 synthesizes and displays them. Since only the character can be reduction-designated with the reduction magnification larger than the reduction magnification of the picture, the character is prevented from being crushed and decoding can satisfactorily be maintained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing apparatus, and more particularly to an image editing apparatus and an electronic filing apparatus for processing image information including character information as a quantized electric signal, and further to an image reduction processing method in a map search apparatus and the like. Is.

[0002]

2. Description of the Related Art In a conventional image reduction processing method, even information containing characters is reduced at the same reduction ratio as image information.

For example, a map search device will be described.
In the map search device, maps of different scales for the same area are prepared in advance in multiple types of systems. For example, when a 1/10000 map is displayed on the monitor display screen, the user can When it is desired to reduce to 1/2, the map of 1/20000 of the area currently being displayed is read out and displayed.

At this time, when the map corresponding to the designated reduction ratio is not prepared in the system, the map is reduced and displayed. In this case, if there is character information, the reduction process is performed with the same reduction ratio and reduction method including this character, so the character part seems to be crushed in the reduction result, and as a result, It has the drawback of reduced readability.

[0005]

SUMMARY OF THE INVENTION Therefore, the present invention has been made in order to eliminate the drawbacks of the conventional ones, and its purpose is to make the characters easy to see in the reduction processing result of the image including the characters and to improve the decipherability. An object is to provide an image reduction processing device which is improved.

[0006]

An image reduction processing apparatus according to the present invention comprises a file means for individually storing image information corresponding to one display screen as an image plane, and character information accompanying the image information as a character plane. An image reduction processing unit that reads out the image plane and performs reduction processing according to the designated reduction ratio m, and reads out the character plane and reduces the character information according to the designated reduction ratio n (n> m). Characteristic reduction processing means for performing reduction processing according to the reduction ratio m with respect to the arrangement on the plane, and synthesizing means for synthesizing the outputs of these reduction processing means with each other are also included.

[0007]

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a system block diagram of an embodiment of the present invention. The display information is compressed and stored in the code storage unit (file medium such as magnetic disk or optical disk) 1. The information in this case includes text information accompanying the image information as well as the image information, and is map information as an example.

In the image information of this map information, information corresponding to one display screen is stored as one image plane A, and character information accompanying this image information is stored as one character plane B. In this case, the one image plane A and the one character plane B correspond to each other, and the corresponding planes A and B are overlapped on one display screen to finally draw the map.

The decompression processing units 2 and 3 are image planes A and A, respectively.
It is provided corresponding to the character plane B, and expands the information of the corresponding plane by the designated magnification.

The image reduction processing unit 4 reduces the output image of the expansion processing unit 2 according to the designated reduction ratio m. The character reduction processing unit 5 reduces only the information relating to the characters of the output information of the expansion processing unit 3 by the designated reduction ratio n (n> m), and determines the size of the plane B of the character and the characters of each character in the plane. Both positions are reduced by the image reduction ratio m.

The image synthesizing section 6 logically synthesizes the processing outputs from both the reduction processing sections 4 and 5 and outputs the result to the display section 7.

In such a configuration, the operation of FIG. 1 will be described with reference to the processing procedure example of FIG. When the image reduction ratio m = 1/2 and the character reduction ratio n = 3/4, the expansion processing unit 2,
In No. 3, since the expansion ratio is not designated, the planes A and B corresponding to the expansion ratio 1 are read out from the file 1 as they are and derived to the corresponding reduction processing units 4 and 5.

In the image reduction processing section 4, the designated reduction rate m = 1 /
According to 2, the size of the plane A is reduced to 1/2 as in the image of C shown in FIG. In this example, the number of pixels after processing is 1/2 (W × L) compared to the number of pixels before processing W × L
L).

Regarding the processing of the character plane B by the character reduction processing unit 5, first, the size of the plane B is reduced according to m = 1/2 which is the same as the image reduction rate, and the size of the character itself is the designated reduction rate n. = 3/4 is reduced.

More specifically, only the character string shown by the dotted line of the plane B in FIG. 2 is extracted. As the character string extraction processing method, character recognition technology or coordinate data is registered in advance at the time of file registration. It is done by a method such as specifying characters. The coordinates P (x, y) of the center point of the extracted character string are obtained.

At this time, since the size of the character plane B is reduced at a reduction rate m = 1/2, the center position of the character string in the result of the character plane reduction is Q (x / x / 2
, Y / 2). On the other hand, since the character itself is reduced to 3/4, a reduced character plane D in which the character reduced to 3/4 is arranged at the in-plane position Q as shown in D is obtained.

These processing planes C and D are combined into a combining processing unit 6
The composite plane E is obtained by synthesizing and is displayed on the display unit 7.

[0019]

As described above, according to the present invention, the character information and the image information are processed as separate planes independent of each other, and the image plane and the character plane are individually reduced. The reduction ratio of the character information can be set to be larger than that of the image information, so that the image can be reduced and displayed without deteriorating the decipherability of the character.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a diagram showing a processing process of an embodiment of the present invention.

[Explanation of symbols]

 1 code storage unit (file) 2, 3 decompression processing unit 4 image reduction processing unit 5 character reduction processing unit 6 image synthesis processing unit 7 display unit

Claims (1)

Claim: What is claimed is: 1. A file means for individually storing image information corresponding to one display screen as an image plane, and character information accompanying the image information as a character plane, respectively.
An image reduction processing unit that reads out the image plane and performs reduction processing according to a designated reduction ratio m, and reads out the character plane to reduce character information according to a designated reduction ratio n (n> m). The image processing apparatus includes: a character reduction processing unit that performs a reduction process according to the reduction ratio m with respect to the arrangement on the plane, and a combining unit that combines the outputs of the two reduction processing units with each other.