JP2015230420A - Projection type display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projection type display device capable of displaying information associated with position information of an accurate projection position when the information associated with the plurality of position information is present in the vicinity in an extension reality software.SOLUTION: The projection type display device includes position measurement means for measuring a position of the device body, direction measurement means for measuring a direction of the device body, distance measurement means for measuring a distance from the device body to the projection surface, communication means, and information acquisition means for acquiring information associated with the position information by using the communication means. Position information of the projection surface is calculated on the basis of the information acquired by the position measurement means, the direction measurement means, and the distance measurement means, and the information associated with the position information acquired by the information acquisition means and the position information of the projection surface are switched. The projector is capable of projecting and displaying an air tag and determines a projection priority of the air tag according to GPS information and the projection parameter.

Description

  The present invention relates to a projection display device, and more particularly to a projection display device that displays information related to position information.

  In recent years, augmented reality software represented by Sekai Camera (registered trademark) has become widespread in digital cameras and mobile phones, and its convenience is generally recognized. In augmented reality software, information can be added in association with location information in the real world, and the added information is superimposed on the real world image on the display unit of the terminal.

  As a technique relating to such augmented reality, Patent Document 1 discloses a technique for displaying information such as facilities existing in the vicinity together with navigation information according to the current position of the user. Patent Document 2 discloses a technique for recognizing an object to be projected and displaying information related to the object on the object.

JP 2004-093358 A JP 2009-008905 A

  However, in the techniques disclosed in Patent Document 1 and Patent Document 2, when there are many pieces of information associated with position information in the vicinity, the positions of information associated with a plurality of pieces of position information are accurately displayed. It was difficult to do.

In order to achieve the above object, a projection display device according to the present invention provides:
Position measuring means for measuring the position of the main body;
Direction measuring means for measuring the direction of the main body,
Distance measuring means for measuring the distance from the main body to the projection surface;
Communication means;
Comprising information acquisition means for acquiring information associated with the position information using the communication means;
Based on the information obtained from the position measuring means, the direction measuring means, and the distance measuring means, the position information of the projection plane is calculated,
The information associated with the position information to be projected is switched according to the information associated with the position information obtained by the information acquisition means and the position information of the projection plane.

  According to the present invention, it is possible to accurately display information even when a plurality of pieces of information associated with position information exist in the vicinity.

It is a block diagram for demonstrating the structure of the Example which concerns on this invention. It is the flowchart which showed the process of the Example concerning this invention. It is a figure for demonstrating the tag selection process of the Example concerning this invention. It is a figure for demonstrating the shift | offset | difference of the position of the projector of the Example concerning this invention, and a projection surface. It is a figure for demonstrating the 2nd tag selection process of the Example concerning this invention. It is a figure for demonstrating the 3rd tag selection process of the Example concerning this invention.

[Example 1]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a configuration diagram for explaining the configuration of a projector 10 according to the present invention. The projector 10 includes a control unit 11 including a CPU and a memory for controlling the operation of the entire projector, a projection control unit 12 including a light source and a liquid crystal panel, an electronic compass 13 for determining the projection direction of the projector, and a distance to the projection surface. A projection distance measuring unit 14 is provided. Furthermore, it comprises a communication unit 15 for communicating with an external server, and a position measurement unit 16 for measuring position information of a projector including a GPS receiver.

  Next, an operation of displaying information (hereinafter referred to as a tag) associated with the position information by the projector 10 will be described with reference to FIG. First, when the display process is started, the position information of the projector 10 is acquired using the position measurement unit 16 (S11). As an example of position information, longitude and latitude can be used. By using the longitude and latitude, it is possible to specify where the projector 10 exists. In addition to the longitude and latitude, other information such as mobile phone base station information may be used as the position information.

  Next, based on the acquired position information, a tag near the projector is acquired from an external server via the communication unit 15 (S12). The external server maintains a tag database, similar to the processing realized by the Sekai Camera (registered trademark) of iPhone (registered trademark). When receiving location information, multiple tags exist in the vicinity. A mechanism to reply is implemented. Next, the distance from the projector to the position where the image is projected is acquired using the projection distance measuring unit 14 (S13). As an example of the distance measurement method, a laser distance measurement method or the like is used.

  Next, the projection direction of the projector 10 is acquired using the electronic compass 13 (S14), the position information of the projector obtained in S11, the distance from the projector 10 to the projection plane obtained in S13, and the projector obtained in S14. The position information of the projection plane is calculated from the projection direction (S15). Next, using the position information of the projection plane obtained in S15 and the plurality of tags obtained from the server in S12, a tag to be displayed is selected (S16), and the selected tag is displayed (S17). . Finally, it is determined whether there is an end instruction from the user (S18), and the display processing from S11 to S17 is repeated until the end instruction is received. If there is an end instruction in S18, the process ends.

  The tag selection process in S16 will be described in detail with reference to FIG. The case where there are five tags from tag A to tag E in S12 will be described as an example. FIG. 3A shows the positional relationship between the projector 10 and the tag. As shown in FIG. 3A, the tag A and the tag C exist within a certain distance R from the projection plane of the projector, and the tag B, the tag D, and the tag E exist outside the range. In the state as shown in FIG. 3A, the projector 10 selects only the tag A and the tag C, and displays the tag A and the tag C as shown in FIG. FIG. 3B shows a state in which the tag C located closer to the projector is displayed in an enlarged manner than the tag A. In FIG. 3B, the size of the tag is changed and displayed according to the distance from the projection surface and the projector, but other display changes such as color and shape may be made. . Further, the fixed distance R used for displaying and hiding the tag can be arbitrarily set by a user setting.

  Further, in the tag selection processing in S16, the tag may be selected using not only the distance from the projection plane to the tag but also the position information of the displayed projection plane. For example, when projected on the wall of a house as shown in FIG. 5 (a), the tag present inside the house in the shaded area is not displayed as shown in FIG. 5 (b) from the viewpoint of privacy protection. You may control. To determine whether the position of the projection plane is a house, an inquiry is made to a server having external map information via the communication unit 15 to determine whether the projection position is a public facility or road, and display or non-display is performed. Control.

  Also, tag attribute information or the like may be used in the tag selection processing in S16. The tag attribute information is, for example, shooting parameters included in the tag image. A tag selection process using parameters at the time of shooting will be described with reference to FIG. 6A shows an image shot in the macro mode, and FIG. 6B shows an image shot in the pan focus. In the above example, whether or not the tag is displayed is switched depending on whether or not the tag exists within the range of the distance R from the projection plane. However, the distance R used for determination may be switched for each image. For example, as shown in FIG. 6C, a distance R1 shorter than R is used for determination in an image shot in macro mode, and a distance R2 longer than R is determined in an image shot in pan focus. Used for.

  As a result of the determination, as shown in FIG. 6C, the image (a) photographed in the macro mode is not displayed, and the image (b) photographed in the pan focus is displayed. In general, an image captured in the macro mode cannot be recognized unless it is close to the captured object. On the other hand, an image such as a landscape photographed with pan focus can be recognized from a relatively long distance. By using shooting parameters for tag display / non-display determination, only tags that are easily recognized by the user can be selectively displayed.

  In this embodiment, the position information of the projection surface is calculated using the position information of the projector body, the projection direction, and the distance information to the projection surface. However, when the projector 10 is tilted and projected as shown in FIG. The position information of the projection plane is shifted. In order to deal with the case of tilting and projecting, a tilt sensor is further provided, and the projection surface and the projector are used by using the angle value obtained from the tilt sensor and the distance to the projection surface obtained from the projection distance measuring unit 14. It may also be configured to calculate the position shift. When using an inclination sensor, the position information of the projection plane may be calculated from the position information of the projector and the projection direction by using the calculated deviation of the position of the projection plane and the projector instead of the distance to the projection plane. .

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation and change are possible within the range of the summary.

10 projector, 11 control unit, 12 projection control unit, 13 electronic compass,
14 projection distance measurement unit, 15 communication unit, 16 position measurement unit

Claims (5)

Position measuring means for measuring the position of the main body;
Direction measuring means for measuring the direction of the main body,
Distance measuring means for measuring the distance from the main body to the projection surface;
Communication means;
Comprising information acquisition means for acquiring information associated with the position information using the communication means;
Based on the information obtained from the position measuring means, the direction measuring means, and the distance measuring means, the position information of the projection plane is calculated,
A projection type display apparatus, wherein information associated with position information to be projected is switched according to information associated with position information obtained by the information acquisition means and position information of a projection plane. The projection type according to claim 1, further comprising an inclination sensor, wherein position information of the projection plane is calculated based on information obtained from the position measurement means, the direction measurement means, the distance measurement means, and the inclination sensor. Display device. The projection display apparatus according to claim 1 or 2, wherein information associated with position information existing within a certain range from the position of the projection plane is selectively displayed. The attribute information of the position of the projection plane is acquired based on the position information of the projection plane, and information associated with the position information is selectively displayed according to the attribute information of the position of the projection plane. The projection display device according to any one of claims 1 to 3. The attribute information of the information associated with the position information is acquired, and the information associated with the position information is selectively displayed according to the attribute information of the information associated with the position information. The projection display device according to claim 4.