JPH06149964A - Image processor - Google Patents

Abstract

PURPOSE:To display image data and graphic data after magnification/reduction without generating deviation even when an error exists between the magnification/reduction base range of the image data and that of the graphic data. CONSTITUTION:This processor is constituted in such a way that the image data within a magnification target range frame-designated on a display part 27 is extracted from display memory 26 in display dot unit by operating a key input part 22 and a mouse 23 and stored in an image extracting memory 28, and coordinate error difference between extracted image data and a magnification designation frame P is calculated by a correction value arithmetic part 29, and after the extracted image data is reduced and corrected corresponding to the error difference by an image processing part 30, magnification processing is performed corresponding to magnification designated in advance, and also, the magnification processing is applied to the graphic data extracted from the display memory 26 corresponding to the magnification designation frame P by a graphic processing part 31 corresponding to the similar magnification, and each magnified image data and graphic data are displayed by being synthesized and stored in the display memory 26.

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 for synthesizing and displaying image (image) data input by an image scanner and graphic (vector) data obtained by coordinate input.

[0002]

2. Description of the Related Art For example, image data such as a map or a design drawing is read by an image scanner and displayed on a display unit, and graphic data obtained by inputting coordinates to the displayed image data is combined and displayed to be corrected. An image processing device for performing calibration has been considered.

FIG. 4 is an enlarged view of a conventional image processing apparatus.
In the same figure, 11 is a display screen, and 12a, 12b, ... Are divided by display dots corresponding to the display resolution of image data, and are indicated by diagonal lines. Reference numeral 13 denotes a range to be enlarged / reduced specified by the user on the display screen 11.

A frame P for designating the expansion / contraction target range 13 is
It is defined in advance as a quadrangle, and the position and size of the frame P in the display screen 11 are changed to change the expansion / reduction target range 13 thereof.
The frame P indicating the expansion / contraction target range 13 is set by two vector coordinate line segments P1 to P4 in the vertical and horizontal directions on the display screen 11 and their lengths.

That is, the display area per dot of the display dots 12a, 12b, ...
The lower the display resolution is, the more vector coordinates are included. Therefore, the frame lines P1 to P4 of the designated frame P are included.
Is a line segment connecting the four display dots 12h, 12i, 12j, 12k. Here, the line segment passing through the coordinate points a, b, and c is the graphic data 14 drawn by vector input.

That is, on the display screen 11 on which the image data (not shown) input as an image and the graphic data 14 input as a vector are combined and displayed, the enlargement / reduction target range 13 is operated by its designated frame P. When specified, the image data area that is the basis of enlargement or reduction is not only the area inside the specified frame P, but also the image coordinates are converted into an integer type in display dot units, so that the specified frame P actually passes through. In the case of the designated frame P extracted in the display dot range, for example, the designated frame P in FIG.
Not only 3 but also the range 15 outside the specified frame P corresponding to the intersecting area is included.

On the other hand, the graphic data area which is the basis of enlargement or reduction in the graphic data 14 is composed of vectors a, b and b, c with the coordinates a, b of the intersection with the specified frame P as boundaries, and is specified by the user. An image of the range 13 + 15 which corresponds to the expansion / reduction target range 13 and includes the graphic data a, b and b, c corresponding to the expansion / reduction target range 13 and the intersection area 15 and which is an actual expansion / reduction target. The data and the data are separately enlarged or reduced and then combined and displayed.

[0008]

Therefore, the user-specified frame P has the display dots 12 on the display screen 11.
a, 12b, ... Except when they are set so as to substantially coincide with the respective boundary lines, the actual range that serves as the basis for enlarging or reducing the image data is that the designated frame P exists rather than the user designated frame P. Since it is always increased up to the outer peripheral line Po of the display dot, an error of 15 minutes occurs in the shaded area with respect to the enlargement or reduction base range of the graphic data that exactly corresponds to the user-specified frame P.

Here, each of the display dots 12a, 12
Since each display area of b, ... Is actually very small compared to the display area of the entire display screen 11, in the case of image reduction, the above-mentioned error is also reduced and the difference between the image data and the graphic data is reduced. Although no obvious deviation is visually confirmed, in the case of image enlargement, the above error amount is also enlarged. Therefore, in particular, graphic data that is accurately enlarged or reduced corresponding to the designated frame P is synthesized. If so, the deviation between the image data and the graphic data will appear very conspicuously.

The present invention has been made in view of the above problems,
Even if there is an error between the enlargement or reduction basic range of image data and the enlargement or reduction basic range of graphic data, it is possible to display the image data after enlargement or reduction and the graphic data without deviation. An object is to provide a processing device.

[0011]

That is, an image processing apparatus according to the present invention synthesizes and displays image (image) data and graphic (vector) data. On the other hand, frame specifying means for specifying a frame to be enlarged / reduced, image extraction storage means for extracting and storing image data corresponding to the specified frame by the frame specifying means in display dot units, and the frame specification. Error calculation means for calculating the error between the range of the frame designated by the means and the image data range extracted and stored by the image extraction storage means by the display coordinate value; and the error coordinate value calculated by the error calculation means. Correction means for correcting the image data range extracted and stored in the image extraction storage means so as to match the range of the frame, and the image data range-corrected by the correction means in advance. Image processing means for enlarging / reducing according to a predetermined magnification, graphic processing means for extracting graphic data corresponding to the designated frame by the frame designating means, and enlarging / reducing according to the previously designated magnification; The image data obtained by the image processing means and the graphic data obtained by the graphic processing means are combined and stored as display data storage means.

[0012]

Function: That is, the image data is also scaled up / down corresponding to the designated frame for scaling up / down, and is shifted from the figure (vector) data separately scaled up / down. There will be no composite display.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the arrangement of an image processing apparatus. This image processing apparatus is provided with a control unit 21 and is stored in a program ROM 24 in advance based on input signals from a key input unit 22 and a mouse 23. Various device control programs such as the generated image processing program are activated to control the operation of each part of the device.

In the control unit 21, in addition to the key input unit 22, mouse 23, program storage unit 24, image scanner 25, display memory 26, display unit 27, image extraction memory 28, correction value calculation unit 29, image ( Image) Processing unit 3
0 and the graphic (vector) processing unit 31 are connected.

The key input unit 22 is provided with various function keys such as cursor keys and operation execution keys in addition to character input keys such as alphanumeric keys and symbol keys, and inputs image (image) data and graphic (vector) data. This key input unit 22 is used to give instructions, display instructions, or instructions such as enlargement / reduction.
A mouse 23 is provided as an auxiliary input device used together therewith, and a cursor operation on the display screen, a vector coordinate designating operation, or a designating frame P designating an enlargement / reduction range of image / graphic data is performed.

The image scanner 25 optically reads image data such as maps and design drawings.
The image data read by the image scanner 25 is stored in the display memory 26 via the control unit 21.

The display memory 26 has a frame memory corresponding to the display area of the display unit 27, and the image data read by the image scanner 25 and the key input unit 2 are provided.
2 and the graphic data input by operating the mouse 23 are combined and stored, and the composite image data stored in the display memory 26 is displayed on the display unit 27 by the control unit 21.

The image extraction memory 28 includes the key input unit 2
2 and the mouse 23 are operated to designate a frame for enlarging or reducing the composite image data displayed on the display unit 27, the display memory 26 corresponding to the designated frame P.
The image data stored in the image extraction memory 28 is expanded or reduced by the image processing unit 30 to be described later. It is processed.

The correction value calculation unit 29 stores the user-specified frame P to be enlarged or reduced and the image data actually transferred and stored in the image extraction memory 28 in display dot units corresponding to the specified frame P. The correction value corresponding to the area error is
It is calculated by converting to vector coordinate values. In this case,
The upper edge correction value of the image data for the upper frame line P1 of the specified frame P is Y1, the lower edge correction value of the image data for the lower frame line P2 of the specified frame P is Y2, and the lower edge correction value of the image data for the left frame line P3 of the specified frame P is The left edge correction value is X1, and the right edge correction value of the image data for the right frame line P4 of the designated frame P is X2.

The image processing section 30 includes the image extraction memory 2
Based on the image data stored in 8, the image data correction processing according to the correction values X1, X2, Y1, and Y2 calculated by the correction value calculation unit 29 is performed, and the operation is designated by the key input unit 22. The image data is enlarged or reduced according to the designated magnification, and the image data enlarged or reduced by the image processing unit 30 is transferred to and stored in the display memory 26.

The graphic processing section 31 designates by operating the key input section 22 based on the graphic (vector) data extracted from the display memory 26 in correspondence with the enlargement or reduction user-specified frame P. This graphic processing unit 31 performs expansion or contraction processing according to the magnification.
The graphic data enlarged or reduced in (1) is transferred to the display memory 26, and is combined with the image data after the enlargement or reduction processing and stored. Next, the operation of the image processing apparatus having the above configuration will be described. FIG. 2 is a flowchart showing the enlargement / reduction processing of the combined display data by the image processing apparatus. FIG. 3 is a diagram showing a setting state of a processing target range associated with the enlargement / reduction processing of the image processing apparatus.

That is, image data such as a map or a design drawing is transferred via the image scanner 25 to the control unit 21.
Read by the key input unit 22 or mouse 2
When the graphic (vector) data connecting the designated coordinates is drawn by the coordinate designating operation on the display unit 27 by 3, the image data and the graphic data are combined and stored in the display memory 26 and displayed on the display unit 27. To be done.

Here, when the user operates the key input unit 22 and the mouse 23 to set the enlargement designation frame P in order to enlarge a desired display area on the display unit 27, the control unit 21
Thus, the image data A, which is converted from the display memory 26 into an integer type in units of display dots 12a, 12b, ... And extracted and transferred in correspondence with the designated frame P, is stored in the image extraction memory 28 (step S1, S2).

In step S2, the image data A stored in the image extraction memory 28 has an error area (oblique line) up to the outer peripheral line of each display dot in which the frame lines P1 to P4 are present with respect to the user-specified frame P. Part) 15 is included.

Then, a correction value corresponding to a region error between the user-specified frame P to be enlarged and the image data A transferred and stored in the image extraction memory 28 in display dot units corresponding to the specified frame P. Is calculated by being converted into a vector coordinate value by the correction value calculation unit 29 (step S3).

In this case, the upper edge correction value of the image data A for the upper frame line P1 of the specified frame P is Y1, the lower frame line P of the specified frame P is
Lower edge correction value of image data A for 2 is Y2, designated frame P
The left edge correction value of the image data A for the left frame line P3 is X1
The right edge correction value of the image data A for the right frame line P4 of the designated frame P is X2.

In step S3, the correction values X1, X2, Y1, Y of the image data A including the error area 15 are corrected.
When 2 is obtained, the image data A stored in the image extraction memory 28 is erased by the image processing unit 30 in accordance with the correction values X1, X2, Y1 and Y2 calculated by the correction value calculation unit 29. The reduction correction is performed so as to match the designated frame P (step S4).

In this way, when the image data B that exactly corresponds to the user-specified frame P is obtained as the enlargement target image range in the image extraction memory 28, the enlarged image data B is designated in advance by the operation of the key input unit 22. Enlargement processing is performed by the image processing unit 30 according to the enlarged magnification (step S
5).

Further, a figure (vector) extracted from the display memory 26 in correspondence with the enlargement designation frame P by the user.
The data 14 (a, b and b, c) is enlarged by the graphic processing unit 31 in accordance with the same enlargement ratio designated in advance by operating the key input unit 22 (step S).
6).

Then, the image data and the graphic data that have been enlarged in steps S5 and S6 are combined and stored in the display memory 26 and displayed on the display unit 27 (step S7). As a result, the enlarged image data and the graphic data can be displayed without a shift.

Therefore, according to the image processing apparatus having the above-described configuration, the image data of the enlargement target range whose frame is designated on the display unit 27 by operating the key input unit 22 and the mouse 23 is displayed in dot units from the display memory 26. Stored in the image extraction memory 28, and the extracted image data and the enlargement designation frame P are extracted.
The coordinate error components X1, X2, Y1 and Y2 are calculated by the correction value calculator 29, and the coordinate error components X1, X2, Y1 and
After the image processing unit 30 reduces and corrects the extracted image data according to Y2, the image is enlarged according to a previously designated enlargement ratio, and is extracted from the display memory 26 corresponding to the enlargement designation frame P. Since the graphic data is enlarged by the graphic processing unit 31 in accordance with the same designated enlargement ratio as described above, the enlarged image data and the graphic data are combined in the display memory 26, stored, and output. Image data is also enlarged in correspondence with the enlargement designation frame P accurately, and composite display can be performed without deviation from the enlarged figure (vector) data.

In the description of the operation of the above embodiment, the enlargement processing by designating the range of the display data has been described. However, even when the reduction processing is performed, the image (image ) Since the data is subjected to error correction and then subjected to reduction processing, it is possible to perform composite display without deviation from the separately reduced graphic (vector) data.

[0034]

As described above, according to the present invention, image data and graphic (vector) data are combined and displayed, and enlargement / reduction of the combined and displayed data is performed. Frame specifying means for specifying the frame to be the target of,
An image extracting / storing means for extracting and storing image data corresponding to a frame designated by the frame designating means in display dot units, a range of the frame designated by the frame designating means, and an image storage section for storing the image data. Error calculation means for calculating an error from the image data range with the display coordinate value, and the image data range extracted and stored in the image extraction storage means according to the error coordinate value calculated by the error calculation means. Correcting means for correcting so as to match the range, image processing means for enlarging / reducing the range-corrected image data according to a previously designated magnification, and a figure corresponding to the frame designated by the frame designating means. The graphic processing means for extracting data and enlarging / reducing according to the previously designated magnification, the image data obtained by the image processing means and the graphic processing means. Since the display data storage means for synthesizing and storing the obtained graphic data as display target data is stored, it is possible to arrange between the expansion or reduction basic range of image data and the expansion or reduction basic range of graphic data. Even if there is an error, it is possible to display the image data after enlargement or reduction and the graphic data without a shift.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an image processing apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a process of enlarging / reducing composite display data by the image processing apparatus.

FIG. 3 is a diagram showing a setting state of a processing target range associated with enlargement / reduction processing of the image processing apparatus.

FIG. 4 is a diagram showing a frame designation state of an enlargement / reduction target range in a conventional image processing apparatus.

[Explanation of symbols]

11 ... Display screen, 12a, 12b, ... Display dots, 14
... graphic (vector) data, 15 ... error area, 21 ... control section, 22 ... key input section, 23 ... mouse, 24 ... program ROM, 25 ... image scanner, 26 ... display memory, 27 ... display section, 28 ... image Extraction memory, 29 ... Correction value calculation unit, 30 ... Image processing unit, 31 ... Graphic processing unit, P ...
Enlargement / reduction designated frame, A ... Image data range extracted corresponding to designated frame P, B ... Image data range corrected to match designated frame P, X1, X2, Y1, Y2 ... Error correction value, a, b, c ... Display coordinate points.

Claims (1)

[Claims] 1. An image processing apparatus for synthesizing and displaying image (image) data and graphic (vector) data, wherein a frame to be enlarged / reduced is designated for the synthesized and displayed data. Frame specifying means, image extracting and storing means for extracting and storing image data corresponding to the frame specified by the frame specifying means in display dot units, range of the frame specified by the frame specifying means, and the image extracting and storing Error calculation means for calculating an error from the range of image data extracted and stored by the means using display coordinate values, and image data extracted and stored in the image extraction storage means according to the error coordinate values calculated by the error calculation means A correction unit that corrects the range so as to match the range of the frame, and an image that enlarges or reduces the image data that has been range-corrected by the correction unit according to a pre-specified magnification. Processing means, graphic processing means for extracting graphic data corresponding to the designated frame by the frame designating means, and enlarging / reducing in accordance with the previously designated magnification, image data obtained by the image processing means, and the graphic An image processing apparatus comprising: a display data storage unit configured to combine the graphic data obtained by the processing unit as display target data and to store the display target data.