JP2017138394A - Image display control device, image display control method, and image display control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display control device, image display control method, and image display control program with which movement of a selected range in an image can be suitably controlled.SOLUTION: There is provided an image display control device comprising: an image display part that displays an image; a specific image selection part that selects a specific image from the image displayed by the image display part; a selected range moving part that moves the range of the specific image selected by the specific image selection part from the image displayed by the image display part; and a movement control part that controls the movement of the selected range of the specific image performed by the selected range moving part on the basis of calculation using the coordinates of a movement target position and the coordinates of the specific image selected by the specific image selection part.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an image display control device, an image display control method, and an image display control program.

  In a conventional photographing apparatus, there is a case where an operation for selecting a specific part of an image, such as movement of an enlarged portion in reproduction image enlargement, is performed. However, if the edge of the image is selected, the selection range extends outside the image, and it is necessary to black out the protrusion. Thus, a technique has been proposed in which, when an operation for selecting an end portion of an image is performed, the selection range is corrected in the image.

  For example, in Patent Document 1, in a digital camera capable of changing the display position of the AF / AE cursor on the display screen, when the cursor is positioned at the end of the display screen, the cursor is displayed on the display screen. A technique for moving in the central direction is disclosed.

Japanese Patent No. 3480446

  However, the above conventional technique forcibly moves the selection range (for example, the cursor) at different movement distances ignoring the unit movement distance (specified movement distance, one-step movement distance), which causes a problem in the subsequent movement of the selection range. There is a fear. For example, when the selection range is moved by the unit movement distance, the selection range cannot be positioned (returned) to the movement target position coordinates (for example, the image center).

  The present invention has been made on the basis of the above problem awareness, and is to obtain an image display control device, an image display control method, and an image display control program capable of suitably performing movement control of a selection range in an image. Objective.

  The image display control device of the present invention includes an image display unit that displays an image, a specific image selection unit that selects a specific image from the image displayed by the image display unit, and the image displayed by the image display unit. The selection range based on a calculation using the selection range moving unit that moves the range of the specific image selected by the specific image selection unit, the movement target position coordinates, and the coordinates of the specific image selected by the specific image selection unit. A movement control unit that controls movement of the selection range of the specific image by the movement unit.

  The movement control unit includes the movement target position coordinates, the coordinates of the specific image selected by the specific image selection unit, and the unit movement distance (specified movement distance, 1 of the selection range of the specific image by the selection range movement unit). The movement of the selection range of the specific image by the selection range moving unit can be controlled based on the calculation using the step movement distance.

  The movement control unit calculates a distance between the coordinates of the specific image after the movement and the movement target position coordinates before the selection range moving unit moves the selection range of the specific image by a unit movement distance; Based on the calculated distance, the selection range moving unit moves the selection range of the specific image by a unit movement distance, or the selection range moving unit moves the selection range of the specific image to the movement target position coordinates. Can do.

  The movement control unit determines the selection range of the specific image by the selection range movement unit when the calculated distance is ½ or more of a unit movement distance of the selection range of the specific image by the selection range movement unit. When the calculated distance is less than half of the unit moving distance of the selection range of the specific image by the selection range moving unit, the selection range of the specific image is selected by the selection range moving unit. Can be moved to the movement target position coordinates.

  The image display control apparatus of the present invention may further include a movement distance changing unit that changes a unit movement distance of the selection range of the specific image by the selection range movement unit.

  The movement target position coordinates may be located near the center of the image displayed by the image display unit.

  The image display control method of the present invention includes an image display step for displaying an image, a specific image selection step for selecting a specific image from the image displayed in the image display step, and the image displayed in the image display step. Based on a selection range moving step for moving the range of the specific image selected in the specific image selection step, and a calculation using the movement target position coordinates and the coordinates of the specific image selected in the specific image selection step. A movement control step for controlling movement of the selection range of the specific image by the movement step.

  In the movement control step, the movement target position coordinates, the coordinates of the specific image selected in the specific image selection step, and the unit movement distance (specified movement distance, 1 of the selection range of the specific image in the selection range movement step) The movement of the selection range of the specific image by the selection range movement step can be controlled based on the calculation using the step movement distance.

  In the movement control step, before moving the selection range of the specific image by a unit movement distance in the selection range movement step, a distance between the coordinates of the specific image after movement and the movement target position coordinates is calculated, Based on the calculated distance, the selection range of the specific image is moved by a unit movement distance by the selection range movement step, or the selection range of the specific image is moved to the movement target position coordinate by the selection range movement step. Can do.

  In the movement control step, when the calculated distance is ½ or more of a unit movement distance of the selection range of the specific image by the selection range movement step, the selection range of the specific image is determined by the selection range movement step. When the calculated distance is less than ½ of the unit moving distance of the selection range of the specific image obtained by the selection range moving step, the selection range of the specific image is determined by the selection range moving step. Can be moved to the movement target position coordinates.

  The image display control method of the present invention may further include a moving distance changing step of changing a unit moving distance of the selection range of the specific image by the selection range moving step.

  The movement target position coordinates can be located near the center of the image displayed in the image display step.

  The image display control program of the present invention includes an image display step for displaying an image, a specific image selection step for selecting a specific image from the image displayed in the image display step, and the image displayed in the image display step. Based on a selection range moving step for moving the range of the specific image selected in the specific image selection step, and a calculation using the movement target position coordinates and the coordinates of the specific image selected in the specific image selection step. And a movement control step of controlling movement of the selection range of the specific image by the movement step.

  According to the present invention, an image display control device, an image display control method, and an image display control program that can suitably perform movement control of a selection range in an image are obtained.

It is a block diagram which shows the principal part structure of the digital camera (image display control apparatus) of this embodiment. It is a figure which shows an example of the relationship between the image which an image display part displays, and the specific image which a specific image selection part selects. 3A to 3C are diagrams illustrating an example of a state in which the selection range of the specific image is moved by the selection range moving unit from the state of FIG. It is a flowchart which shows the process of the image display control method of this embodiment. 5A and 5B are process diagrams showing processing of the image display control method of the present embodiment. 6A and 6B are diagrams for explaining the technical problem of the conventional image display control device.

  A digital camera (image display control device) 10 according to the present embodiment will be described with reference to FIGS.

  As shown in FIG. 1, the digital camera 10 includes a body main body 20 and a photographing lens 30 that can be attached to and detached from the body main body 20 (lens exchangeable). The photographic lens 30 includes a photographic lens group 31 and a diaphragm 32 in order from the subject side (left side in FIG. 1) to the image plane side (right side in FIG. 1). The body body 20 includes a shutter 21 and an image sensor 22 in order from the subject side (left side in FIG. 1) to the image plane side (right side in FIG. 1). The body 20 includes an aperture / shutter drive circuit 23 that drives and controls the aperture 32 and the shutter 21 in a state of being attached to the photographing lens 30, and an image sensor drive circuit 24 that drives and controls the image sensor 22. The photographing lens 30 includes a communication memory 33 that stores various information such as resolving power (MTF) information of the photographing lens group 31 and aperture diameter (aperture value) information of the diaphragm 32. When the photographic lens 30 is attached to the body main body 20, various information stored in the communication memory 33 is read into the DSP 40 in the body main body 20.

  A subject image is formed on the light receiving surface of the image sensor 22 by the subject light flux that enters from the photographing lens group 31 and passes through the aperture 32 and the shutter 21. The subject image formed on the light receiving surface of the image sensor 22 is converted into an electrical pixel signal by a large number of pixels having different detection colors arranged in a matrix and is output to the DSP 40 as image data. The DSP 40 performs predetermined image processing on the image data input from the image sensor 22, displays it as an image on the image display unit (LCD) 25, and stores it as an image in the image memory 26.

  The image sensor 22 is supported by the image blur correction device 50 so as to be drivable within a plane orthogonal to the optical axis of the photographing optical system (the photographing lens group 31, the diaphragm 32, and the shutter 21). The image blur correction device 50 drives the image sensor 22 in the plane orthogonal to the optical axis, thereby displacing the imaging position of the subject image on the image sensor 22 and correcting the image blur due to the camera shake. .

  The body main body 20 is connected to the DSP 40 and includes a photographing operation switch 27. The photographing operation switch 27 includes various switches such as a power switch and a release switch. The body main body 20 includes an image display operation switch 28 connected to the DSP 40. The image display operation switch 28 is an operation for selecting a part of the display image of the image display unit 25 and performing various processing such as enlargement / reduction processing, AF (Auto Focus) processing, AE (Automatic Exposure) processing, etc. Switch.

  The DSP 40 includes a specific image selection unit 41, a selection range movement unit 42, a movement distance change unit 43, and a movement control unit 44.

  The specific image selection unit 41 selects a specific image from the images displayed by the image display unit 25 under the operation of the image display operation switch 28 by the user. The image displayed by the image display unit 25 includes a live view image formed on the light receiving surface of the image sensor 22, a reproduced image read from the image memory 26, a reproduced image transmitted from an external medium, and the like.

  FIG. 2 shows an example of the relationship between the image 100 displayed by the image display unit 25 and the specific image 200 selected by the specific image selection unit 41. In the present embodiment, the image 100 displayed by the image display unit 25 has a rectangular shape extending in the X direction (longitudinal direction) and the Y direction (short direction) that are the entire surface of the image display unit 25, and the specific image selection unit The specific image 200 selected by 41 has a rectangle extending in the X direction (longitudinal direction) and the Y direction (short direction), which is similar to the image 100 and fits inside the image 100. In the present embodiment, the center coordinate 110 of the image 100 is set to the origin coordinate where the values of the X-axis coordinate and the Y-axis coordinate are both zero, and this origin coordinate is set as the “movement target position coordinate” of the specific image 200. doing. In the example of FIG. 2, the center coordinates 210 of the specific image 200 coincide with the center coordinates (origin coordinates, movement target position coordinates) 110 of the image 100.

  The selection range moving unit 42 moves the range of the specific image 200 selected by the specific image selection unit 41 from the image 100 displayed by the image display unit 25 under the operation of the image display operation switch 28 by the user. The movement of the selection range of the specific image 200 by the selection range moving unit 42 involves many movements of the unit movement distance for each unit movement distance (specified movement distance, one step movement distance) within the XY plane constituting the image 100. It is executed by repeating.

  3A to 3C show an example of a state in which the selection range of the specific image 200 is moved by the selection range moving unit 42 from the state of FIG. 3A moves the selection range of the specific image 200 to the right in the X direction (longitudinal direction) in the XY plane constituting the image 100, and FIG. 3B shows the XY constituting the image 100. The selection range of the specific image 200 is moved to the upper side in the Y direction (short direction) in the plane, and FIG. 3C shows the selection range of the specific image 200 in the X direction in the XY plane constituting the image 100. It is moved to the right side (longitudinal direction) and above the Y direction (short direction). 3A to 3C, the center coordinates 210 of the specific image 200 are separated from the center coordinates (origin coordinates, movement target position coordinates) 110 of the image 100.

  The moving distance changing unit 43 changes the unit moving distance (specified moving distance, one step moving distance) of the selection range of the specific image 200 by the selection range moving unit 42 under the operation of the image display operation switch 28 by the user.

  The movement control unit 44 includes the movement target position coordinates (in this embodiment, the center coordinates (origin coordinates) 110 of the image 100), the center coordinates 210 of the specific image 200 selected by the specific image selection unit 41, and the selection range movement unit 42. The movement of the selection range of the specific image 200 by the selection range moving unit 42 is controlled based on the calculation using the unit movement distance (specified movement distance, one step movement distance) of the selection range of the specific image 200.

  When the movement control unit 44 receives an operation instruction for the image display operation switch 28 (hereinafter referred to as an operation instruction) by the user, the movement control unit 44 moves the selection range of the specific image 200 by the unit movement distance before the movement by the selection range movement unit 42. The distance between the center coordinates 210 of the specific image 200 and the movement target position coordinates 110 is calculated. Then, based on the calculated distance, the movement control unit 44 moves the selection range of the specific image 200 by the unit movement distance by the selection range moving unit 42 according to the operation instruction, or the selection range moving unit without following the operation instruction. 42, the selection range of the specific image 200 is forcibly moved to the movement target position coordinates 110.

  More specifically, when the calculated distance is equal to or greater than ½ of the unit moving distance of the selection range of the specific image 200 by the selection range moving unit 42, the movement control unit 44 selects the selection range moving unit 42 according to the operation instruction. Thus, the selection range of the specific image 200 is moved by the unit movement distance. On the other hand, when the calculated distance is less than ½ of the unit moving distance of the selection range of the specific image 200 by the selection range moving unit 42, the movement control unit 44 does not follow the operation instruction and the selection range moving unit 42. Thus, the selection range of the specific image 200 is forcibly moved to the movement target position coordinates 110.

  Processing of the image display control method of the present embodiment will be described with reference to the flowchart of FIG. 4 and the process diagrams of FIGS. Here, as shown in FIG. 5A, the range of the specific image 200 selected by the specific image selection unit 41 is the right side of the X direction (longitudinal direction) and the Y direction (short) in the XY plane constituting the image 100. In the state of being located below the hand direction, the user gives an instruction to operate the image display operation switch 28, and the selection range moving unit 42 moves the selection range of the specific image 200 to the movement target position coordinates (in this embodiment, the image). A case of moving toward 100 center coordinates (origin coordinates) 110) will be described as an example.

  In step S <b> 1, it is determined whether or not an instruction to move the selection range of the specific image 200 is given to the selection range moving unit 42 by the operation of the image display operation switch 28 by the user. When the selection range moving unit 42 is not instructed to move the selection range of the specific image 200 (step S1: No), the determination step of step S1 is repeated, and the selection range moving unit 42 selects the specific image 200. When there is an instruction to move the range (step S1: Yes), the process proceeds to step S2.

  In step S2, before the movement control unit 44 moves the selection range of the specific image 200 by the unit movement distance by the selection range movement unit 42, the center coordinates 210 (virtual movement destination coordinates) of the moved specific image 200 are displayed. Is calculated.

  In step S3, the movement control unit 44 calculates the distance between the center coordinates 210 (virtual movement destination coordinates) of the moved specific image 200 and the movement target position coordinates 110, and the calculated distance is the selection range moving unit. It is determined whether or not the unit moving distance of the selection range of the specific image 200 by 42 is 1/2 or more.

  When the calculated distance is ½ or more of the unit moving distance of the selection range of the specific image 200 by the selection range moving unit 42 (step S3: Yes), the process proceeds to step S4, and the movement control unit 44 follows the operation instruction. The selection range moving unit 42 moves the selection range of the specific image 200 by the unit movement distance, and the process returns to step S2. As long as the calculated distance is ½ or more of the unit moving distance of the selection range of the specific image 200 by the selection range moving unit 42, the processing loop of step S2 to step S4 is repeated to move the selection range of the specific image 200 by unit. The distance is moved toward the movement target position coordinate 110 by a distance (FIG. 5A).

  When the calculated distance is less than ½ of the unit moving distance of the selection range of the specific image 200 by the selection range moving unit 42 (step S3: No), the process proceeds to step S5, and the movement control unit 44 responds to the operation instruction. Instead, the selection range moving unit 42 forcibly moves the selection range of the specific image 200 to the movement target position coordinates 110 (FIG. 5B).

  The computer (including the DSP 40) in the digital camera 10 stores an image display control program for executing the above image display control method.

  In the default setting of the image display control device, the unit movement distance (specified movement distance, one step movement distance) of the selection range of the specific image 200 by the selection range moving unit 42 is the movement target position coordinate (in this embodiment, the center of the image 100). Usually, the coordinates (origin coordinates) 110) are determined as a reference. Therefore, even if the selection range of the specific image 200 is moved away from the movement target position coordinates 110 by the selection range moving unit 42, it is relatively difficult to return the selection range of the specific image 200 to the movement target position coordinates 110 again. Easy.

  However, as in Patent Document 1 described above, when the selection range (for example, the cursor) is positioned at the end of the display screen, the selection range is moved to the center of the display screen. Since the forced movement is performed at different movement distances ignoring the unit movement distance (specified movement distance, one-step movement distance), there is a possibility that a failure occurs in the subsequent movement of the selection range. For example, when the selection range is moved by the unit movement distance, the selection range cannot be positioned (returned) to the movement target position coordinates (for example, the image center).

  This technical problem will be specifically described with reference to FIGS. As shown in FIG. 6A, in the state where the center of the selection range (for example, the cursor) is shifted slightly to the left in the X direction (longitudinal direction) from the center of the image, the selection range is moved in the X direction. When the unit is moved to the right of (longitudinal direction) by a unit movement distance (one step), as shown in FIG. 6B, the center of the selection range passes through the center of the image and is slightly larger than the center of the image. Therefore, it may be shifted to the right in the X direction (longitudinal direction).

  In this regard, according to the image display control device, the image display control method, and the image display control program of the present embodiment, the movement control unit 44 moves the selection range of the specific image 200 by the selection range moving unit 42 by the unit movement distance. Before, the distance between the center coordinates 210 (virtual destination coordinates) of the moved specific image 200 and the movement target position coordinates 110 is calculated, and this calculated distance is used to select the specific image 200 by the selection range moving unit 42. When it becomes less than ½ of the unit movement distance of the range, the selection range moving unit 42 moves the selection range of the specific image 200 to the movement target position coordinates 110. This solves the technical problem (FIGS. 6A and 6B) of the conventional image display control process as in Patent Document 1 described above, and suitably performs movement control of the selection range in the image. Is possible.

  In the above embodiment, the case where the image display control apparatus of the present invention is applied to the digital camera 10 is described as an example. However, the image display control apparatus of the present invention is an apparatus in which an image display control program is installed in various devices other than the digital camera 10, such as a portable terminal or a tablet PC having a shooting function, or an image display apparatus having no shooting function. Can also be realized.

  In the above embodiment, the case where the center coordinates (origin coordinates) 110 of the image 100 are set to the “movement target position coordinates” of the specific image 200 has been described as an example. However, there is a degree of freedom in setting the “movement target position coordinates” of the specific image 200, which may be in the vicinity of the center coordinates (origin coordinates) 110 of the image 100, or the center coordinates (origin of the origin of the image 100). (Coordinates) 110 may be away.

10 Digital camera (image display control device)
20 Body body 21 Shutter (shooting optical system)
22 Image sensor 23 Aperture / shutter drive circuit 24 Image sensor drive circuit 25 Image display unit (LCD)
26 Image Memory 27 Shooting Operation Switch 28 Image Display Operation Switch 30 Shooting Lens 31 Shooting Lens Group (Shooting Optical System)
32 Aperture (Optical system)
33 Communication memory 40 DSP
41 specific image selection unit 42 selection range moving unit 43 movement control unit 44 movement distance changing unit 50 image shake correction apparatus 100 image 110 center coordinates of image (origin coordinates, movement target position coordinates)
200 specific image 210 central image of specific image

Claims (13)

An image display unit for displaying an image;
A specific image selection unit for selecting a specific image from the image displayed by the image display unit;
A selection range moving unit for moving a range of the specific image selected by the specific image selection unit from the image displayed by the image display unit;
A movement control unit that controls the movement of the selection range of the specific image by the selection range movement unit, based on a calculation using the movement target position coordinates and the coordinates of the specific image selected by the specific image selection unit;
An image display control device comprising: The image display control device according to claim 1.
The movement control unit is based on a calculation using the movement target position coordinates, the coordinates of the specific image selected by the specific image selection unit, and the unit movement distance of the selection range of the specific image by the selection range movement unit. An image display control device that controls movement of the selection range of the specific image by the selection range moving unit. The image display control device according to claim 2,
The movement control unit calculates a distance between the coordinates of the specific image after the movement and the movement target position coordinates before the selection range moving unit moves the selection range of the specific image by a unit movement distance; Based on the calculated distance, the selection range movement unit moves the selection range of the specific image by a unit movement distance, or the selection range movement unit moves the selection range of the specific image to the movement target position coordinates. Image display control device. The image display control device according to claim 3,
The movement control unit determines the selection range of the specific image by the selection range movement unit when the calculated distance is ½ or more of a unit movement distance of the selection range of the specific image by the selection range movement unit. When the calculated distance is less than half of the unit moving distance of the selection range of the specific image by the selection range moving unit, the selection range of the specific image is selected by the selection range moving unit. An image display control device for moving the image to the movement target position coordinates. The image display control device according to any one of claims 1 to 4,
The image display control apparatus which further has a movement distance change part which changes the unit movement distance of the selection range of the said specific image by the said selection range movement part. The image display control device according to any one of claims 1 to 5,
The image display control device, wherein the movement target position coordinates are located in the vicinity of a center portion of the image displayed by the image display unit. An image display step for displaying an image;
A specific image selection step of selecting a specific image from the image displayed in the image display step;
A selection range moving step of moving a range of the specific image selected in the specific image selection step from the image displayed in the image display step;
A movement control step for controlling the movement of the selection range of the specific image by the selection range movement step based on a calculation using the movement target position coordinates and the coordinates of the specific image selected in the specific image selection step;
An image display control method characterized by comprising: The image display control method according to claim 7,
In the movement control step, based on the calculation using the movement target position coordinates, the coordinates of the specific image selected in the specific image selection step, and the unit movement distance of the selection range of the specific image in the selection range movement step. An image display control method for controlling movement of the selection range of the specific image by the selection range moving step. The image display control method according to claim 8.
In the movement control step, before moving the selection range of the specific image by a unit movement distance in the selection range movement step, a distance between the coordinates of the specific image after movement and the movement target position coordinates is calculated, Based on the calculated distance, the selection range of the specific image is moved by a unit movement distance by the selection range movement step, or the selection range of the specific image is moved to the movement target position coordinates by the selection range movement step. Image display control method. The image display control method according to claim 9, wherein
In the movement control step, when the calculated distance is ½ or more of a unit movement distance of the selection range of the specific image by the selection range movement step, the selection range of the specific image is determined by the selection range movement step. When the calculated distance is less than ½ of the unit moving distance of the selection range of the specific image obtained by the selection range moving step, the selection range of the specific image is determined by the selection range moving step. Is moved to the movement target position coordinates. The image display control method according to any one of claims 7 to 10,
The image display control method which further has a movement distance change step which changes the unit movement distance of the selection range of the said specific image by the said selection range movement step. The image display control method according to any one of claims 7 to 11,
The image display control method, wherein the movement target position coordinates are located in the vicinity of a center portion of the image displayed in the image display step. An image display step for displaying an image;
A specific image selection step of selecting a specific image from the image displayed in the image display step;
A selection range moving step of moving a range of the specific image selected in the specific image selection step from the image displayed in the image display step;
A movement control step for controlling the movement of the selection range of the specific image by the selection range movement step based on a calculation using the movement target position coordinates and the coordinates of the specific image selected in the specific image selection step;
An image display control program for causing a computer to execute the above.

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