JP2019207375A - Image generator for display - Google Patents

Abstract

To provide an image generator for display with which it is possible to synthesize a target image including a main image and a map image and display a prescribed region of the synthesized image that includes the main image in such a way that the main image appears as large as possible within a reference rectangle of prescribed size.SOLUTION: When a first ratio that is the ratio of a reference length in a direction X to the length of a bounding rectangle 43 in the direction X that has two sides parallel to an axis X and two sides parallel to an axis Y of a first XY coordinate system and circumscribes a main image 41 is smaller than a second ratio that is the ratio of a reference length in a direction Y to the length of the bounding rectangle 43 in the direction Y, a region setting unit adds a first dummy region 45 to an edge in the direction Y of a rectangular image 44 of a target image 40 that is enclosed in the bounding rectangle 43, and sets a region composed of the rectangular image 44 and the first dummy region 45 as a display target region 47.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a display image generating apparatus.

  Patent Document 1 discloses a technique for updating a map in real time in order to cope with changes in roads, buildings, and the like written on the map every day. Specifically, in Patent Document 1, existing map data is used as a reference image, an image captured by an artificial satellite or the like and having a different coordinate system from the reference image is set as a target image, and these images are used as a unified coordinate system. A technique for superimposing and aligning the positions is disclosed.

JP 2017-102924 A

An object of the present invention is to synthesize a target image including a main image and a map image, and display a predetermined area including the main image in the combined image so that the main image appears as large as possible in a reference rectangle of a predetermined size. It is an object of the present invention to provide a display image generating apparatus that can be used.
An object of the present invention is to display a predetermined area including a main image among target images including a main image and a background image so that the main image appears as large as possible in a reference rectangle having a predetermined size. A display image generating apparatus is provided.

  A first display image generating apparatus according to the present invention includes a main image and a transparent background image representing an analysis result for each small area in an analysis target area, and includes a first XY coordinate system having a predetermined relationship between coordinate axes and directions. An area setting unit that sets a display target area including the main image, a map image of a second XY coordinate system in which the coordinate axis and direction have the predetermined relationship, and the display target area are combined with the target image. A composite unit that generates a composite image, and a predetermined region in the composite image has two sides parallel to the X axis and two sides parallel to the Y axis of the first XY coordinate system, and the X direction length and the Y direction A conversion unit that converts the image into a display image having a reference rectangular size whose length is a predetermined X-direction reference length E and a predetermined Y-direction reference length F.

  The region setting unit has two sides parallel to the X axis of the first XY coordinate system and two sides parallel to the Y axis, and the X direction reference with respect to an X direction length A of a circumscribed rectangle circumscribing the main image When the first ratio that is the ratio of the length E is smaller than the second ratio that is the ratio of the Y-direction reference length F to the Y-direction length B of the circumscribed rectangle, the circumscribed rectangle of the target image A first dummy area is added to the end of the rectangular image surrounded by Y in the Y direction, an area composed of the rectangular image and the first dummy area is set as the display target area, and the first ratio is the second ratio Is greater than the ratio of the rectangular image, a second dummy area is added to the X-direction end of the rectangular image, and an area composed of the rectangular image and the second dummy area is set as the display target area. ing.

The compositing unit is configured to paste the display target region on the map image based on each pair of vertexes of the display target region and a position corresponding to each of the paired vertices in the map image. ing.
The conversion unit is configured to generate the display image by enlarging / reducing a pasting region to which the display target region is pasted in the composite image.

According to this configuration, the target image including the main image is combined with the map image, and a predetermined area including the main image is displayed in the combined image so that the main image appears as large as possible in a reference rectangle having a predetermined size. It becomes possible to do. Furthermore, according to this structure, it becomes possible to display a map image in all the areas | regions other than a main image among the images for a display.
A second display image generating apparatus according to the present invention includes a main image representing a result of analysis for each small region in a region to be analyzed and a transparent background image, and includes a first XY coordinate system having a predetermined relationship between coordinate axes and directions. A synthesizing unit that generates a synthesized image by synthesizing a target image, a map image of a second XY coordinate system in which the coordinate axis and direction have the predetermined relationship, and a predetermined area of the synthesized image, the first XY coordinate A reference rectangle having two sides parallel to the X-axis and two sides parallel to the Y-axis of the system, the X-direction length and the Y-direction length being a predetermined X-direction reference length E and a predetermined Y-direction reference length F, respectively. And a conversion unit that converts the image into a display image having a size of.

Each of the pair of vertices of a circumscribed rectangle having two sides parallel to the X axis and two sides parallel to the Y axis of the first XY coordinate system and circumscribing the main image; A rectangular image surrounded by the circumscribed rectangle of the target image is pasted to the map image based on the position corresponding to each of the paired vertices in the image.
In the conversion unit, the first ratio that is the ratio of the X-direction reference length E to the X-direction length A of the circumscribed rectangle is the ratio of the Y-direction reference length F to the Y-direction length B of the circumscribed rectangle. When the ratio is smaller than the second ratio, a first dummy area is added to the Y-direction end of the pasting area of the rectangular image in the composite image, and the pasting area after the first dummy area is added is enlarged or reduced. When the display image is generated and the first ratio is larger than the second ratio, a second dummy area is added to the X direction end of the pasting area, and the second dummy area is added. The display image is generated by enlarging or reducing the pasting area later.

According to this configuration, the target image including the main image is combined with the map image, and a predetermined area including the main image is displayed in the combined image so that the main image appears as large as possible in a reference rectangle having a predetermined size. It becomes possible to do. Furthermore, according to this structure, it becomes possible to display a map image in all the areas | regions other than a main image among the images for a display.
A third display image generating apparatus according to the present invention includes a main image and a background image representing an analysis result for each small area in an analysis target area, and an object image in an XY coordinate system having a predetermined relationship between a coordinate axis and a direction. Having two sides parallel to the X axis and two sides parallel to the Y axis of the XY coordinate system, the X direction length is a predetermined reference X direction length E, and the Y direction length is a predetermined length. An image processing apparatus for converting an image of a reference rectangle size having a length F in the reference Y direction, having two sides parallel to the X axis and two sides parallel to the Y axis of the XY coordinate system. And the ratio of the X-direction reference length E to the X-direction length A of the circumscribed rectangle circumscribing the main image and the ratio of the Y-direction reference length F to the Y-direction length B of the circumscribed rectangle A comparison unit that compares the second ratio, and when the first ratio is smaller than the second ratio, the pair A first dummy area is added to the Y-direction end of the rectangular image surrounded by the circumscribed rectangle in the image, and the rectangular image after the addition of the first dummy area is enlarged / reduced so that the size of the reference rectangle is increased. When a display image is generated and the first ratio is larger than the second ratio, a second dummy area is added to the X-direction end of the rectangular image, and the second dummy area is added. An image generation unit that generates a display image having a size of the reference rectangle by enlarging and reducing the rectangular image.

According to this configuration, it is possible to display a predetermined area including the main image among the target images including the main image and the background image so that the main image appears as large as possible in a reference rectangle having a predetermined size. .
In one embodiment of the first or third display image generating device, the first dummy area is added to both ends in the Y direction of the rectangular image, and the length of the first dummy area in the Y direction is added. D is represented by the following formula (a).
D = 1/2 · {(A · F / E) −B} (a)
In one embodiment of the first or third display image generating apparatus, the second dummy area is added to both ends in the X direction of the rectangular area, and the length of the second dummy area in the X direction is set. C is represented by the following formula (b).
C = 1/2 · {(B · E / F) −A} (b)

In one embodiment of the second display image generating device, the compositing unit is configured so that each set of paired vertices of the circumscribed rectangle matches a position corresponding to each of the paired vertices in the map image. The rectangular image is configured to be pasted on the map image after the map image is enlarged / reduced, and the first dummy areas are respectively added to both ends in the Y direction of the pasting area, The length D in the Y direction of each first dummy region is expressed by the following equation (a).
D = 1/2 · {(A · F / E) −B} (a)

In one embodiment of the second display image generating device, the compositing unit is configured so that each set of paired vertices of the circumscribed rectangle matches a position corresponding to each of the paired vertices in the map image. The rectangular image is configured to be pasted on the map image after the map image is enlarged / reduced, and the second dummy areas are respectively added to both ends in the X direction of the pasting area, The X-direction length C of each second dummy region is expressed by the following equation (b).
C = 1/2 · {(B · E / F) −A} (b)
In one embodiment of the first, second, or third display image generating device, the first ratio is B / A and the second ratio is F / E.

FIG. 1 is a schematic diagram showing a configuration of a display image generating apparatus according to the first embodiment of the present invention. FIG. 2 is a schematic diagram showing a predetermined farm field. FIG. 3 is a schematic diagram illustrating an example of a target image. It is a schematic diagram which shows an example of a map image. FIG. 5 is a functional block diagram for explaining the functions of the PC. FIG. 6 is a flowchart showing a procedure of display image generation processing executed by the PC when the display image generation program is started. FIG. 7 is a schematic diagram for explaining operations of the region setting unit of the first embodiment and the image generation unit of the third embodiment. FIG. 8 is a schematic diagram for explaining the operation of the region setting unit of the first embodiment and the image generation unit of the third embodiment. FIG. 9 is a schematic diagram for explaining operations of the region setting unit of the first embodiment and the image generation unit of the third embodiment. FIG. 10 is a schematic diagram showing a state in which a display target region is pasted on the enlarged and reduced map image. FIG. 11 is a functional block diagram for explaining the functions of the PC. FIG. 12 is a flowchart illustrating a procedure of display image generation processing executed by the PC when the display image generation program is started. FIG. 13 is a schematic diagram for explaining the operation of the synthesis unit. FIG. 14 is a schematic diagram showing a state in which a rectangular image is pasted on the enlarged and reduced map image. FIG. 15 is a functional block diagram for explaining the functions of the PC. FIG. 16 is a flowchart showing a procedure of display image generation processing executed by the PC when the display image generation program is started.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a schematic diagram showing a configuration of a display image generating apparatus 1 according to the first embodiment of the present invention.
The display image generating apparatus 1 according to the first embodiment combines a target image including a main image and a map image, and converts a predetermined region including the main image in the combined image into an image having a reference rectangular size. Thus, a display image (display image data) is generated. First, the target image and the map image will be described.

In this embodiment, the target image is generated based on the analysis result for each small region (mesh) in the analysis target region. More specifically, the target image is generated based on distribution data of a normalized difference vegetation index (NDVI) with respect to the field that is the analysis target region. In the following, the normalized difference vegetation index may be referred to as NDVI. NDVI will be described. Green leaves of plants absorb visible light such as red, and strongly reflect light with wavelengths in the near infrared region. NDVI is an index that uses such properties of green leaves and indicates the presence or absence of vegetation and the degree of activity. NDVI is defined by the following formula (1).
NDVI = (IR-R) / (IR + R) (1)
IR: Observed value of near infrared light R: Observed value of visible light NDVI is normalized to take a value of, for example, 0.01 to 1.00, and a color is associated according to this value. NDVI images can be generated.

  The NDVI distribution data for a predetermined field is created, for example, as follows. That is, the field is photographed with the multispectral camera while the flying object equipped with the multispectral camera is flying over the field. A multispectral camera is a camera that can capture images of visible red light and near-infrared light, for example. The flying object is, for example, a drone (unmanned aerial vehicle). Then, NDVI is calculated for each small area in the field based on the obtained captured image. Thereby, NDVI distribution data is obtained.

  FIG. 2 is a schematic diagram showing a predetermined farm field. In FIG. 2, the upper direction indicates north and the lower direction indicates south. In the example of FIG. 2, the shape of the field Q is a rectangle, but the shape of the field Q may be any shape other than a rectangle. The field Q is divided into a plurality of small regions (mesh) q by a plurality of virtual lines parallel to the north-south direction and a plurality of virtual lines parallel to the east-west direction. The NDVI distribution data is composed of NDVI for position information for each small region q in the field Q. The position information includes, for example, latitude / longitude information and altitude information. The NDVI distribution data is provided, for example, as a Geo TIFF file in Geo TIFF format.

A target image (target image data) including a main image representing a NDVI (analysis result) for each small region q in the field Q and a transparent background image is generated from a Geo TIFF file in which NDVI distribution data for the field Q is recorded. be able to. Such target image data is generated, for example, as a PNG file in PNG format.
FIG. 3 is a schematic diagram illustrating an example of a target image.

  The target image 40 is an image in the first XY coordinate system in which the coordinate axis and the direction have a predetermined relationship. Specifically, the first XY coordinate system is a planar coordinate system in which a predetermined position is an origin, a straight line passing through the origin and extending in the east-west direction is an X axis, and a straight line passing through the origin and extending in the north-south direction is a Y axis. . It is assumed that the positive direction of the Y axis is north and the positive direction of the X axis is east. The target image 40 is a rectangular image having two sides parallel to the X axis of the first XY coordinates and two sides parallel to the Y axis.

The target image 40 includes a main image 41 and a transparent background image 42 other than the main image 41. The main image 41 is composed of image data representing an analysis result (in this example, NDVI) for each small region q in the field Q.
In FIG. 3, a two-dot chain line 60 indicates a reference rectangle. The reference rectangle 60 is a rectangle having two sides parallel to the X axis and two sides parallel to the Y axis of the first XY coordinate system. The X-direction length and the Y-direction length of the reference rectangle 60 are set to predetermined X-direction reference length E and Y-direction reference length F, respectively, in the first XY coordinate system.

FIG. 4 is a schematic diagram illustrating an example of a map image. In FIG. 4, only a part of the map image is displayed.
In this embodiment, the map image 50 is a satellite image. The map image may be an aerial photograph image. The map image 50 is an image of the second XY coordinate system in which the coordinate axis and direction have the same relationship as the first XY coordinate. Specifically, the second XY coordinate system is a plane having the origin of the first XY coordinate system as the origin, a straight line passing through the origin and extending in the east-west direction as the X axis, and a straight line passing through the origin and extending in the north-south direction as the Y axis. Coordinate system. It is assumed that the positive direction of the Y axis is north and the positive direction of the X axis is east. The map image 50 in FIG. 4 includes a plurality of fields including the field Q in FIG.

Returning to FIG. 1, the display image generating apparatus 1 is realized by a personal computer (PC) 2. A display 3, a mouse 4 and a keyboard 5 are connected to the PC 2. The PC 2 includes a CPU 6, a memory 7, a hard disk 8, and the like. The PC 2 is provided with a USB (Universal Serial Bus) port (not shown).
The hard disk 8 stores a display image generation program for generating a display image based on the target image and the map image, in addition to the OS (operation system) and the like. For example, the display image generation program is acquired from a storage medium such as a USB memory in which the display image generation program is stored, or is acquired from a website that provides the display image generation program via the Internet. Is possible.

Further, it is assumed that the hard disk 8 stores the image data of the target image 40 (target image data) shown in FIG. 3 and the image data of the map image 50 (map image data) shown in FIG.
Hereinafter, the operation of the PC 2 when generating a display image based on the target image data and map image data stored in the hard disk 8 will be described.

FIG. 5 is a functional block diagram for explaining the functions of the PC 2.
The PC 2 functions as a plurality of function processing units by executing the display image generation program. The function processing unit includes an area setting unit 11, a synthesis unit 12, and a conversion unit 13.
The area setting unit 11 sets a display target area including the main image 41 for the target image 40 (see FIG. 3) in the first XY coordinate system corresponding to the target image data in the hard disk 8.

The combining unit 12 combines the map image 50 (see FIG. 4) of the second XY coordinate system corresponding to the map image data in the hard disk 8 and the display target region set by the region setting unit 11 to generate a combined image. To do.
The conversion unit 13 has a predetermined region in the composite image having two sides parallel to the X axis and two sides parallel to the Y axis of the first XY coordinate system, and the X direction length and the Y direction length are respectively predetermined X directions. The image is converted into an image having a reference rectangle 60 (see FIG. 3) having a reference length E and a predetermined Y-direction reference length F.

Hereinafter, details of the operations of the region setting unit 11, the synthesis unit 12, and the conversion unit 13 will be described.
FIG. 6 is a flowchart showing a procedure of processing executed by the PC 2 when the display image generation program is started.
When the display image generation program is started, the area setting unit 11 has two sides parallel to the X axis and two sides parallel to the Y axis of the first XY coordinate system as shown in FIG. The X-direction length A and the Y-direction length B of the circumscribed rectangle 43 circumscribing the image 41 are acquired (step S1).

In the first XY coordinate system, if the X coordinate minimum value, the X coordinate maximum value, the Y coordinate minimum value, and the Y coordinate maximum value in the main image 41 are xmin, xmax, ymin, and ymax, respectively, the circumscribed rectangle 43 has a point a ( xmin, ymin), a point b (xmin, ymax), a point c (xmax, ymax), and a point d (xmax, ymin) as a rectangle. Therefore, the X-direction lengths A and B of the circumscribed rectangle are obtained based on the following expressions (2) and (3).
A = | xmax−xmin | (2)
B = | ymax−ymin | (3)
In FIG. 7, an alternate long and two short dashes line 60 indicates a reference rectangle.

  Next, the region setting unit 11 determines the ratio of the X-direction reference length E of the reference rectangle 60 to the X-direction length A of the circumscribed rectangle 43 (hereinafter referred to as the first ratio E / A) and the Y-direction length of the circumscribed rectangle 43. The ratio of the reference length F in the Y direction of the reference rectangle 60 to B (hereinafter referred to as the second ratio F / B) is compared (step S2). Note that B / A may be used as the first ratio E / A and F / E may be used as the second ratio.

When the first ratio E / A is smaller than the second ratio F / B, the region setting unit 11 has a rectangular image 44 surrounded by a circumscribed rectangle 43 in the target image 40 as shown in FIG. First dummy areas 45 are respectively added to both ends in the Y direction, and an area composed of the rectangular image 44 and both first dummy areas 45 is set as a display target area 47 (step S3).
Each of the first dummy areas 45 is a rectangle that protrudes from the entire ends of both ends in the Y direction of the rectangular image 44 by the length D in the Y direction outward in the Y direction. The Y-direction length D of each first dummy region 45 is expressed by the following equation (4).
D = 1/2 · {(A · F / E) −B} (4)

  If it is determined in step S2 that the first ratio E / A is larger than the second ratio F / B, the region setting unit 11 includes a rectangle surrounded by the circumscribed rectangle 43 in the target image 40. A second dummy area is added to each end of the image 44 in the X direction, and an area composed of the rectangular image 44 and both second dummy areas is set as a display target area 47 (step S4).

For example, when the target image 40 is an image as shown in FIG. 8, it is determined that the first ratio E / A is larger than the second ratio F / B. In such a case, each second dummy area is an area indicated by 46 in FIG. That is, each second dummy area 46 is a rectangle that protrudes outward in the X direction by the length C in the X direction from the entire edge at both ends in the X direction of the rectangular image 44.
The X-direction length C of each second dummy region 46 is expressed by the following equation (5).
C = 1/2 · {(B · E / F) −A} (5)

When it is determined in step S2 that the first ratio E / A is equal to the second ratio F / B, the region setting unit 11 includes the rectangular image surrounded by the circumscribed rectangle 43 in the target image 40. 44 is set as the display target area 47 (step S5).
For example, when the target image 40 is an image as shown in FIG. 9, it is determined that the first ratio E / A is equal to the second ratio F / B. In such a case, the rectangular image 44 is set as the display target area 47.

  When the process of step S3, S4, or S5 is completed, the synthesizer 12 synthesizes the display target area 47 and the map image 50 (step S6). In this embodiment, the synthesizing unit 12 includes each of the pair of vertices a and c (or b and d) of the display target region 47 and each of the pair of vertices a and c (or b and d) in the map image 50. After the map image 50 is enlarged / reduced so that the position corresponding to is matched, the display target region 47 is pasted on the map image 50.

  FIG. 10 is a schematic diagram showing a state where the display target region 47 is pasted on the map image 50 after the enlargement / reduction. In FIG. 10, a region surrounded by a two-dot chain line is a pasting region 70 to which the display target region 47 is pasted. The main image 41 appears in an area 71 corresponding to the main image 41 in the pasting area 70, and areas other than the area 71 in the pasting area 70 (an area 72 corresponding to the background image 42 and an area 73 corresponding to the first dummy area). The map image appears in the area).

Next, the conversion unit 13 generates a display image having the size of the reference rectangle 60 in the first XY coordinate system by enlarging or reducing the pasting area 70 (step S7).
Specifically, when the display target area 47 is set by the process of step S <b> 3, the conversion unit 13 sets the pasting area 70 to the reference rectangle 60 by multiplying the pasting area 70 by E / A. Convert to a size display image. A region corresponding to the main image 41 in the pasted region after conversion is indicated by a one-dot chain line 81 in FIG. Note that the outline of the entire display image is the same as the outline of the reference rectangle 60. A map image is displayed in a region other than the region 81 of the main image 41 in the display image.

  When the display target area 47 is set by the process of step S4, the conversion unit 33 converts the pasting area into an image having the size of the reference rectangle 60 by multiplying the pasting area by F / B. . A region corresponding to the main image 41 in the pasted region after conversion is indicated by a one-dot chain line 81 in FIG. Note that the outline of the entire display image is the same as the outline of the reference rectangle 60. A map image is displayed in an area other than the area 81 of the main image 41 in the display image.

  When the display target area 47 is set by the process of step S5, the conversion unit 13 sets the pasting area to the reference rectangle by multiplying the pasting area by E / A times (or F / B times). The image is converted into a display image having a size of 60. A region corresponding to the main image 41 in the pasted region after conversion is shown by a one-dot chain line 81 in FIG. Note that the outline of the entire display image is the same as the outline of the reference rectangle 60. A map image is displayed in a region other than the region 81 of the main image 41 in the display image.

When the process of step S7 ends, the conversion unit 13 stores the generated image data of the display image in the hard disk 8 as display image data for the target image 40 (step S8). As a result, the display image corresponding to the target image 40 can be displayed on the display or printed on the recording paper.
According to the first embodiment described above, the target image 40 including the main image 41 and the map image 50 are combined, and the predetermined area including the main image 41 in the combined image is within the reference rectangle 60 having a predetermined size. It is possible to display so that the main image 41 appears as large as possible. Furthermore, according to the first embodiment described above, the map image 50 can be displayed in the entire area other than the main image 41 in the display image.

In step S <b> 3 of the first embodiment described above, the area setting unit 11 adds first dummy areas 45 to both ends in the Y direction of the rectangular image 44 surrounded by the circumscribed rectangle 43 in the target image 40. However, the region setting unit 11 may add the first dummy region 45 only to one end in the Y direction of the rectangular image 44 surrounded by the circumscribed rectangle 43 in the target image 40. In this case, the Y-direction length D of the first dummy region 45 is expressed by the following equation (6).
D = {(A / F / E) -B} (6)

In step S4 of the first embodiment described above, the region setting unit 11 adds the second dummy regions 46 to both ends in the X direction of the rectangular image 44 surrounded by the circumscribed rectangle 43 in the target image 40, respectively. Yes. However, the region setting unit 11 may add the second dummy region 46 only to one end in the X direction of the rectangular image 44 surrounded by the circumscribed rectangle 43 in the target image 40. In this case, the X-direction length C of the second dummy region 46 is expressed by the following equation (7).
C = {(B · E / F) −A} (7)

  Next, a display image generating apparatus according to the second embodiment of the present invention will be described. The overall configuration of the display image generating apparatus 1 according to the second embodiment is the same as that of the display image generating apparatus 1 shown in FIG. Similar to the display image generating device 1 according to the first embodiment, the display image generating device 1 according to the second embodiment combines the target image including the main image and the map image, and the main image among the combined images. Is converted into an image having a size of a reference rectangle, thereby generating a display image (display image data).

  The display image generation apparatus 1 according to the second embodiment and the display image generation apparatus 1 according to the second embodiment differ in the display image generation program stored in the hard disk 8. Also in the display image generating apparatus 1 according to the second embodiment, the hard disk 8 stores target image data corresponding to the target image 40 in FIG. 3 and map image data corresponding to the map image 50 in FIG. Shall.

FIG. 11 is a functional block diagram for explaining the functions of the PC 2.
The PC 2 includes a synthesis unit 21 and a conversion unit 22 as function processing units.
The synthesizing unit 21 has a first XY coordinate system target image 40 (see FIG. 3) obtained by developing the target image data, and a second XY coordinate system map image 50 (FIG. 3) obtained by developing the map image data. 4).

The conversion unit 22 has a predetermined region in the composite image having two sides parallel to the X axis and two sides parallel to the Y axis of the first XY coordinate system, and the X direction length and the Y direction length are respectively predetermined. The image is converted into an image having a size of a reference rectangle having an X-direction reference length E and a predetermined Y-direction reference length F.
Hereinafter, the details of the operations of the synthesis unit 21 and the conversion unit 22 will be described.
FIG. 12 is a flowchart showing a procedure of processing executed by the PC 2 when the display image generation program is started.

When the display image generation program is started, the combining unit 21 has two sides parallel to the X axis and two sides parallel to the Y axis in the first XY coordinate system as shown in FIG. Information on the positions (coordinate values) corresponding to each pair of vertexes of the circumscribed rectangle 43 circumscribing 61 is acquired, and the X-direction length A and the Y-direction length B of the circumscribed rectangle 43 are acquired (step S11).
In the first XY coordinate, if the X coordinate minimum value, the X coordinate maximum value, the Y coordinate minimum value, and the Y coordinate maximum value in the main image 41 are xmin, xmax, ymin, and ymax, respectively, the circumscribed rectangle 43 has a point a (xmin , Ymin), a point b (xmin, ymax), a point c (xmax, ymax), and a point d (xmax, ymin). Therefore, the point a and the point c become a pair of vertices of one set, and the point b and the point d become a pair of vertices of the other set. Therefore, the synthesis unit 21 acquires information (coordinate values) of positions corresponding to each of the paired vertexes of either one of the two pairs of paired vertices.
Further, the combining unit 21 calculates the X-direction length A and the Y-direction length B of the circumscribed rectangle 43 based on the above-described equations (2) and (3).

In FIG. 13, an alternate long and two short dashes line 60 indicates a reference rectangle.
Next, the synthesizing unit 21 synthesizes the rectangular image 44 surrounded by the circumscribed rectangle 43 in the target image 40 and the map image 50 (step S12). In this embodiment, the compositing unit 21 matches a pair of vertices of the circumscribed rectangle 43 whose position information has been acquired in step S <b> 11 and a position corresponding to each of the paired vertices in the map image 50. As described above, after the map image 50 is enlarged or reduced, the rectangular image 44 is pasted on the map image 50.

  FIG. 14 is a schematic diagram showing a state in which a rectangular image 44 is pasted on the map image 50 after enlargement / reduction. In FIG. 14, a region surrounded by a two-dot chain line is a pasting region 70 to which the rectangular image 44 is pasted. The main image 41 appears in an area 71 corresponding to the main image 41 in the pasting area 70, and a map image appears in an area 72 (area corresponding to the background image 42) other than the area 71 in the pasting area 70.

Next, the converting unit 22 uses the first ratio E / A, which is the ratio of the X-direction reference length E of the reference rectangle 60 to the X-direction length A of the circumscribed rectangle 43, and the reference rectangle for the Y-direction length B of the circumscribed rectangle 43. A second ratio F / B, which is a ratio of 60 Y-direction reference lengths F, is compared (step S13). Note that B / A may be used as the first ratio E / A and F / E may be used as the second ratio.
When the first ratio E / A is smaller than the second ratio F / B, the conversion unit 22 places the first dummy areas 73 at both ends in the Y direction of the pasting area 70 as shown in FIG. By adding, the display target area 75 is set (step S14).

Each of the first dummy areas 73 is a rectangle that protrudes from the entire ends of both ends in the Y direction of the pasting area 70 by the length D in the Y direction outward in the Y direction. The Y-direction length D of each first dummy region 73 is expressed by the above formula (4). The display target area 75 is an area composed of the pasting area 70 and both first dummy areas 73.
In step S13, when it is determined that the first ratio E / A is larger than the second ratio F / B, the conversion unit 22 uses the second dummy area (illustrated) on both sides of the X direction end of the pasting area. The display target area is set by adding (omitted) (step S15).

Each of the second dummy areas is a rectangle protruding by a direction length C from the entire end sides at both ends in the X direction of the pasting area toward the outside in the X direction. The X-direction length C of each second dummy region is expressed by the above equation (5). The display target area is an area including a pasting area and both second dummy areas.
When it is determined in step S13 that the first ratio E / A is equal to the second ratio F / B, the conversion unit 22 sets the pasting area as a display target area (step S16).

When the process of step S14, S15, or S16 ends, the conversion unit 22 generates a display image having the size of the reference rectangle 60 by enlarging or reducing the display target area (step S17).
Specifically, when the display target area 75 is set by the processing of step S14, the display target area 75 is multiplied by E / A to generate a display image having the size of the reference rectangle 60. (Step S16). A region corresponding to the main image 41 in the display image generated in this way is indicated by a one-dot chain line 81 in FIG. Note that the outline of the entire display image is the same as the outline of the reference rectangle 60. A map image is displayed in a region other than the region 81 of the main image 41 in the display image.

When the display target area is set by the process of step S15, the display target area is generated by multiplying the display target area by F / B, thereby generating a display image having the size of the reference rectangle 60.
When the display target area is set by the process of step S16, the display target area (pasted area) is displayed by E / A times (or F / B times) to display the size of the reference rectangle 60. Generate an image.

When the process of step S17 ends, the conversion unit 22 stores the generated image data of the display image in the hard disk 8 as display image data for the target image 40 (step S18). As a result, the display image corresponding to the target image 40 can be displayed on the display or printed on the recording paper.
In the second embodiment described above, the same effects as in the first embodiment can be obtained.

In step S <b> 14 of the second embodiment, the conversion unit 22 adds first dummy areas 73 to both ends of the pasting area 70 in the Y direction. However, the conversion unit 22 may add the first dummy area only to one end of the pasting area 70 in the Y direction. In this case, the Y-direction length D of the first dummy region 73 is expressed by the above equation (6).
In step S15 of the second embodiment, the conversion unit 22 adds a second dummy area to each end in the X direction of the pasting area. However, the conversion unit 22 may add the second dummy area only to one end in the X direction of the pasting area. In this case, the X-direction length C of the second dummy region is expressed by the above equation (7).

  Next explained is a display image generating apparatus according to the third embodiment of the invention. The overall configuration of the display image generating apparatus 1 according to the third embodiment is the same as that of the display image generating apparatus 1 shown in FIG. The display image generating apparatus 1 according to the third embodiment and the display image generating apparatus 1 according to the first embodiment are different in the display image generating program stored in the hard disk 8.

  The display image generating apparatus 1 according to the third embodiment generates a display image having a reference rectangle size from a target image including a main image. Assume that the hard disk 8 stores target image data corresponding to the target image 40 of FIG. In the third embodiment, the background image of the target image 40 may be transparent or opaque. The background image of the target image 40 may be white, for example.

FIG. 15 is a functional block diagram for explaining the functions of the PC 2.
The PC 2 includes a comparison unit 31 and an image generation unit 32 as function processing units.
Details of the operations of the comparison unit 31 and the image generation unit 32 will be described below.
FIG. 16 is a flowchart showing a procedure of processing executed by the PC 2 when the display image generation program is activated.

  When the display image generation program is started, the comparison unit 31 has two sides parallel to the X axis and two sides parallel to the Y axis in the first XY coordinate system as shown in FIG. The X-direction length A and the Y-direction length B of the circumscribed rectangle 43 circumscribing 41 are acquired (step S31). Since this process is the same as the process performed by the area setting unit 11 in step S1 of FIG. In FIG. 7, a two-dot chain line 60 represents the size of the reference rectangle.

Next, the comparison unit 31 compares the ratio of the X-direction reference length E of the reference rectangle 60 to the X-direction length A of the circumscribed rectangle 43 (first ratio E / A) and the reference rectangle of the circumscribed rectangle 43 with respect to the Y-direction length B. The ratio of the 60 Y-direction reference length F (second ratio F / B) is compared (step S32). Note that B / A may be used as the first ratio E / A and F / E may be used as the second ratio.
When the first ratio E / A is smaller than the second ratio F / B, the image generating unit 32 has a rectangular image 44 surrounded by a circumscribed rectangle 43 in the target image 40 as shown in FIG. First dummy areas 45 are respectively added to both ends in the Y direction, and an area composed of the rectangular image 44 and both first dummy areas 45 is set as a display target area 47 (step S33).

Each of the first dummy areas 45 is a rectangle that protrudes from the entire ends of both ends in the Y direction of the rectangular image 44 by the length D in the Y direction outward in the Y direction. The length D in the Y direction of each first dummy region 45 is expressed by the above equation (4).
If it is determined in step S <b> 2 that the first ratio E / A is greater than the second ratio F / B, the image generation unit 32 includes a rectangle surrounded by a circumscribed rectangle 43 in the target image 40. Second dummy areas are respectively added to both ends of the image 44 in the X direction, and an area composed of the rectangular image 44 and both second dummy areas is set as a display target area (step S34).

  For example, when the target image 40 is an image as shown in FIG. 8, it is determined that the first ratio E / A is larger than the second ratio F / B. In such a case, each second dummy area is an area indicated by 46 in FIG. That is, each second dummy area 46 is a rectangle that protrudes outward in the X direction by the length C in the X direction from the entire edge of each end in the X direction of the rectangular image 44. The X-direction length C of each second dummy region 46 is expressed by the above formula (5). In this case, an area including the rectangular image 44 and both second dummy areas 46 is set as the display target area 47.

When it is determined in step S <b> 32 that the first ratio E / A is equal to the second ratio F / B, the image generation unit 32 includes the rectangular image surrounded by the circumscribed rectangle 43 in the target image 40. 44 is set as the display target area 47 (step S35).
For example, when the target image 40 is an image as shown in FIG. 9, it is determined that the first ratio E / A is equal to the second ratio F / B. In this case, the rectangular image 44 is set as the display target area 47.

When the process of step S33, S34, or S35 is completed, the image generation unit 32 generates a display image having the size of the reference rectangle 60 by enlarging or reducing the display target region 47 (step S36).
Specifically, when the display target area 47 is set by the processing in step S33, the display image is generated by multiplying the vertical and horizontal directions of the display target area 47 by E / A. A region corresponding to the main image 41 in the display image generated in this way is indicated by a one-dot chain line 81 in FIG. Note that the outline of the entire display image is the same as the outline of the reference rectangle 60.

When the display target area 47 is set by the process of step S34, the image generation unit 32 generates a display image by multiplying the display target area 47 vertically and horizontally by F / B. A region corresponding to the main image 41 in the display image generated in this way is indicated by a one-dot chain line 81 in FIG. Note that the outline of the entire display image is the same as the outline of the reference rectangle 60.
When the display target area 47 is set by the process of step S35, the image generating unit 32 performs E / A times (or F / B times) the vertical and horizontal directions of the display target area 47 (rectangular image 44). A display image is generated. A region corresponding to the main image 41 in the display image generated in this way is indicated by a one-dot chain line 81 in FIG. Note that the outline of the entire display image is the same as the outline of the reference rectangle 60.

When the process of step S36 ends, the image generation unit 32 stores the generated image data of the display image in the hard disk 8 as display image data for the target image 40 (step S37). As a result, the display image corresponding to the target image 40 can be displayed on the display or printed on the recording paper.
According to the third embodiment described above, the predetermined area including the main image in the target image 40 can be displayed so that the main image 41 appears as large as possible in the reference rectangle 60 having a predetermined size. Image data can be generated.

In step S <b> 33 of the third embodiment, the image generation unit 32 adds first dummy regions 45 to both ends of the rectangular image 44 in the Y direction. However, the image generation unit 32 may add the first dummy area 45 only to one end in the Y direction of the rectangular image 44. In this case, the length D in the Y direction of the first dummy region 45 is expressed by the above formula (6).
In step S <b> 34 of the third embodiment, the image generation unit 32 adds second dummy areas to both ends of the rectangular image 44 in the X direction. However, the image generation unit 32 may add the second dummy area only to one side of the X-direction end of the rectangular image 44. In this case, the X-direction length C of the second dummy region is expressed by the above equation (7).

  As mentioned above, although embodiment of this invention was described, this invention can also be implemented with another form. For example, in the above-described embodiment, the main image in the target image is composed of image data representing NDVI for each small region in the analysis target region such as a farm field. However, the main image may be composed of image data representing analysis results other than NDVI for each small area in the analysis target area. As an analysis result other than NDVI, for example, a planting rate, a fertilization amount to be fertilized, and the like may be used.

  In addition, various design changes can be made within the scope of matters described in the claims.

DESCRIPTION OF SYMBOLS 1 Display image generation apparatus 2 Personal computer (PC)
6 CPU
7 Memory 8 Hard Disk 11 Area Setting Unit 12 Combining Unit 13 Converting Unit 21 Combining Unit 22 Converting Unit 31 Comparing Unit 32 Image Generating Unit 40 Target Image 41 Main Image 42 Background Image 43 circumscribed rectangle 44 Rectangular Image 45, 73 First Dummy Area 46 Second dummy area 47 Display target area 50 Map image 60 Reference rectangle 70 Pasting area 71 Area corresponding to the main image in the pasting area 75 Display target area

Claims (8)

A display object including the main image with respect to a target image of the first XY coordinate system including a main image and a transparent background image representing an analysis result for each small area in the analysis target area and having a predetermined relationship between coordinate axes and directions An area setting section for setting an area;
A combining unit that combines the map image of the second XY coordinate system in which the coordinate axis and the direction have the predetermined relationship and the display target region to generate a combined image;
The predetermined area in the composite image has two sides parallel to the X axis and two sides parallel to the Y axis of the first XY coordinate system, and the X direction length and the Y direction length are each a predetermined X direction reference length E. And a conversion unit that converts the image into a display image having a reference rectangle size having a predetermined Y-direction reference length F,
The region setting unit
The ratio of the X-direction reference length E to the X-direction length A of a circumscribed rectangle that has two sides parallel to the X axis and two sides parallel to the Y axis of the first XY coordinate system and circumscribes the main image When the first ratio is smaller than the second ratio that is the ratio of the Y-direction reference length F to the Y-direction length B of the circumscribed rectangle, a rectangular image surrounded by the circumscribed rectangle in the target image A first dummy area is added to the Y-direction end of the image, and an area composed of the rectangular image and the first dummy area is set as the display target area,
When the first ratio is larger than the second ratio, a second dummy area is added to the X-direction end of the rectangular image, and an area including the rectangular image and the second dummy area is displayed. It is configured to be set as the target area,
The compositing unit is configured to paste the display target region on the map image based on each pair of vertexes of the display target region and a position corresponding to each of the paired vertices in the map image. And
The display image generation device configured to generate the display image by enlarging or reducing the pasting region to which the display target region is pasted in the composite image. The target image of the first XY coordinate system including the main image representing the analysis result for each small area in the analysis target area and the transparent background image and having a predetermined relationship between the coordinate axis and the direction, and the predetermined relationship between the coordinate axis and the direction. Combining a map image of the second XY coordinate system having
The predetermined area of the composite image has two sides parallel to the X axis and two sides parallel to the Y axis of the first XY coordinate system, and the X direction length and the Y direction length are respectively predetermined X direction references. A conversion unit for converting the image into a display image having a size of a reference rectangle having a length E and a predetermined Y-direction reference length F,
Each of the pair of vertices of a circumscribed rectangle having two sides parallel to the X axis and two sides parallel to the Y axis of the first XY coordinate system and circumscribing the main image; Based on the position corresponding to each of the paired vertices in the image, is configured to paste a rectangular image surrounded by the circumscribed rectangle of the target image to the map image,
The converter is
The first ratio that is the ratio of the X-direction reference length E to the X-direction length A of the circumscribed rectangle is the second ratio that is the ratio of the Y-direction reference length F to the Y-direction length B of the circumscribed rectangle. Is smaller, the first dummy area is added to the Y direction end of the pasting area of the rectangular image in the composite image, and the pasting area after the addition of the first dummy area is enlarged or reduced, thereby Generate an image,
When the first ratio is larger than the second ratio, a second dummy area is added to the X-direction end of the pasting area, and the pasting area after the second dummy area is added is enlarged or reduced. The display image generation device is configured to generate the display image. An object image in an XY coordinate system including a main image and a background image representing an analysis result for each small area in the analysis object area and having a predetermined relationship between coordinate axes and directions is parallel to the X axis of the XY coordinate system. The size of a reference rectangle having two sides parallel to the Y-axis, the X-direction length being a predetermined reference X-direction length E, and the Y-direction length being a predetermined reference Y-direction length F An image processing apparatus for converting to an image of
The ratio of the X-direction reference length E to the X-direction length A of a circumscribed rectangle having two sides parallel to the X axis and two sides parallel to the Y axis of the XY coordinate system and circumscribing the main image A comparison unit that compares the first ratio with a second ratio that is a ratio of the Y-direction reference length F to the Y-direction length B of the circumscribed rectangle;
When the first ratio is smaller than the second ratio, a first dummy area is added to the Y-direction end of the rectangular image surrounded by the circumscribed rectangle in the target image, and the first dummy area A display image having the size of the reference rectangle is generated by enlarging / reducing the added rectangular image, and when the first ratio is larger than the second ratio, the X of the rectangular image An image generation unit that generates a display image having a size of the reference rectangle by adding a second dummy area to a direction end and enlarging / reducing the rectangular image after the addition of the second dummy area. Image generation device. The first dummy area is added to both ends of the rectangular image in the Y direction, respectively, and the length D in the Y direction of each first dummy area is expressed by the following expression (a). A display image generating apparatus according to claim 1.
D = 1/2 · {(A · F / E) −B} (a) 4. The second dummy area is added to both ends in the X direction of the rectangular area, and the length C in the X direction of each second dummy area is expressed by the following formula (b). A display image generating apparatus according to claim 1.
C = 1/2 · {(B · E / F) −A} (b) The combining unit enlarges and reduces the map image so that each pair of vertexes of the circumscribed rectangle matches a position corresponding to each pair of vertices in the map image, It is configured to be pasted on the map image,
The said 1st dummy area | region is each added to the both ends of the Y direction of the said sticking area | region, The Y direction length D of each said 1st dummy area | region is represented by following Formula (a). Display image generating apparatus.
D = 1/2 · {(A · F / E) −B} (a) The combining unit enlarges and reduces the map image so that each pair of vertexes of the circumscribed rectangle matches a position corresponding to each pair of vertices in the map image, It is configured to be pasted on the map image,
The said 2nd dummy area | region is each added to the both ends of the X direction of the said sticking area | region, The X direction length C of each said 2nd dummy area | region is represented by following Formula (b). Display image generating apparatus.
C = 1/2 · {(B · E / F) −A} (b)   The display image generating apparatus according to claim 1, wherein the first ratio is B / A and the second ratio is F / E.

Images