KR101732804B1 - Hologram control method using impulse radar sensor - Google Patents

Hologram control method using impulse radar sensor Download PDF

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Publication number
KR101732804B1
KR101732804B1 KR1020150134044A KR20150134044A KR101732804B1 KR 101732804 B1 KR101732804 B1 KR 101732804B1 KR 1020150134044 A KR1020150134044 A KR 1020150134044A KR 20150134044 A KR20150134044 A KR 20150134044A KR 101732804 B1 KR101732804 B1 KR 101732804B1
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South Korea
Prior art keywords
hologram
specific space
distance
radar sensor
projection device
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KR1020150134044A
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Korean (ko)
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KR20170035219A (en
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박영진
류홍근
조희섭
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재단법인대구경북과학기술원
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/0005—Adaptation of holography to specific applications
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

The present invention relates to a hologram control method performed by a hologram control apparatus.
In particular, the hologram control method relates to a method of detecting a position of an object using an impulse radar sensor, and then controlling the hologram projection device according to the motion of the object to provide a hologram according to the position of the object.

Description

[0001] HOLOGRAM CONTROL METHOD USING IMPULSE RADAR SENSOR [0002]

The present invention relates to a hologram control method using an impulse radar sensor, and more particularly, to a hologram control method for providing a hologram image according to the position of an object using an impulse radar module.

A conventional hologram apparatus is an apparatus for reproducing a specified object in a three-dimensional stereoscopic image using the principle of holography. The hologram apparatus reproduces a target object in a three-dimensional stereoscopic image, thereby allowing the user to observe the shape of the target object at multiple angles.

In recent years, as the hologram device and the multimedia are combined, it is possible to project the object by various methods. Specifically, a hologram apparatus incorporating multimedia detects a presence of a user by using a sensor installed in a specific space, and then projects the hologram image differently according to whether the user is detected. In other words, a hologram device incorporating multimedia is trying not only to project a hologram image but also to provide an environment using a camera in a static manner, or using other devices such as a 3D display panel or a Kinect sensor.

However, in operation through interlocking with other devices such as a 3D display panel or a Kinect sensor, the performance of the hologram device is still poor in terms of space utilization, and the cost It is not easy.

Accordingly, in using the hologram device, it is necessary to provide a method of detecting a position of a user moving in a specific space with a higher space utilization and providing a different hologram image according to the sensed position.

The present invention can provide a hologram control method for accurately detecting a position of a user moving in a specific space and projecting a hologram image differently according to a position of a detected user.

A method of controlling a hologram according to an exemplary embodiment includes recognizing a new object in a specific space; Determining a position of the object according to the movement of the recognized object in the specific space and a distance from the front of the specific space to the object; And controlling the hologram projection apparatus installed in the specific space on the basis of the position and the distance.

The position of the object according to one embodiment may be determined based on information sensed by two or more first radar sensors installed at each corner of the ceiling of the specific space.

The distance to the object according to one embodiment may be determined based on information sensed by at least one second radar sensor installed on the front surface of the specific space.

According to an exemplary embodiment of the present invention, the determining step may include setting a detection area for detecting the object in consideration of the arrival time of the signal reflected from the object to the two or more first radar sensors, Can be determined as the position of the object.

The determining step may determine the distance to the object based on the second radar sensor in consideration of the arrival time of the signal reflected from the object to the second radar sensor.

In the controlling step, when the object enters the specific space, the hologram projection apparatus installed in the specific space is controlled to be in a deactivated state, can do.

The controlling step may control the hologram projection device installed in the specific space to be in an inactive state and the hologram projection device located in the periphery of the object in an activated state according to the motion of the object when the object enters the specific space .

The hologram control method according to an exemplary embodiment can recognize an object located within a specific space in a forward direction of 350 degrees using an impulse radar sensor.

The hologram control method according to an embodiment of the present invention is a method of controlling a hologram image projected on a hologram projection apparatus in real time in consideration of a change in distance depending on the position of an object moving in a specific space, It is possible to provide an exciting multimedia environment.

The hologram control apparatus according to an embodiment detects an object through the impulse radar sensor, so that the object (user) can receive different hologram images according to the position without having to wear additional equipment.

FIG. 1 is an overall configuration diagram of a hologram control apparatus according to an embodiment.
2 is a view for explaining an operation of determining the position of an object and the distance from the front to the object according to an embodiment.
3 is a view for explaining an operation of controlling the hologram projection apparatus according to the position and distance of an object according to an embodiment.
4 is a view for explaining an operation of controlling the hologram projection apparatus according to the position and distance of an object according to another embodiment.
5 is a view for explaining an operation of controlling a hologram projection apparatus according to an object path according to an embodiment.
6 is a view for explaining an operation of controlling a hologram projection apparatus according to an object path according to another embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an overall configuration diagram of a hologram control apparatus according to an embodiment.

Referring to FIG. 1, the hologram control device 101 can recognize a newly entered object 105 in a specific space 102. Herein, the object 105 may mean an object that enters the specific space 102 and can move within the specific space 102. For example, the object 105 may be an object that can move the position of a person, Object. The specific space 102 indicates a range in which the object 105 can enter and the specific space 102 suggested by the present invention may mean an indoor space in which at least one hologram projection device 106 is installed. have.

Here, in order to recognize the newly entered object 105 in the specific space 102, the hologram control device 101 can receive the information sensed from the radar sensor installed in the specific space 102. [ Then, the hologram control device 101 can recognize whether the object 105 has entered the specific space 102 based on the information received from the radar sensor.

The radar sensor can detect an object 105 that is installed in a specific space 102 and enters a specific space 102. The configuration of the radar sensor may include a power source, a receiver, a processing unit, an LED, a communication module, and a display port. The receiving unit may include an ultra-wideband impulse radar sensor, a TX antenna, and an RX antenna, and the processing unit may include a signal amplifier and a signal processor. The LED is used to confirm the status of the radar sensor, so that it can be confirmed whether it is active or inactive. The communication module may be used for wireless synchronization with the hologram projection device. The DisplayPort can also be used when debugging is required or when it is desired to appear on an external display.

The radar sensor may be a sensor capable of recognizing the position of an object by analyzing a signal reflected by the object entering the specific space 102 in real time. For example, the radar sensor may be an impulse radar sensor using an impulse radar module based on the Impulse Radar-Ultra Wide Band (IR-UWB) technology.

The radar sensor may include a first radar sensor 103 and a second radar sensor 104 in order to more accurately detect an object entering the specific space 102. [ Here, the first radar sensor 103 may be a sensor installed at each corner of the ceiling of the specific space 102 and capable of grasping the position of the object. The second radar sensor 104 may be a sensor installed on the front surface of the specific space and capable of detecting the distance between the hologram projection device installed in the specific space 102 and the object from the front.

At this time, as described above, since the radar sensor can recognize an object at a distance of about 1 meter (m) to 15 meters by using a microwave, the radar sensor can be used in a specific space 102 configured as an indoor space Can be suitable.

When it is recognized that the object has newly entered according to the information received from the radar sensor, the hologram control device 101 determines the position of the object according to the movement in the specific space and the distance from the front of the specific space to the object Can be determined. Then, the hologram control device 101 can control the hologram projection device installed in the specific space based on the determined position and distance. At this time, the hologram control apparatus 101 can control to project the hologram image in different ways according to the initial state of the hologram projection apparatus.

(1) When the initial state of the hologram projection apparatus is in the activated state,

The hologram control device 101 can control the hologram projection device located in the periphery of the object to be in an inactive state according to the movement of the object in consideration of the initial state of the hologram projection device. In other words, all of the hologram projecting apparatuses 105 installed in the specific space 102 are in the activated state, so that the hologram control apparatus 101 can control the hologram projecting apparatus 105 in accordance with the position of the object, It is possible to control the state of the controller 105 to the inactive state.

(2) When the initial state of the hologram projection apparatus is in the inactive state,

The hologram control apparatus 101 can control the hologram projection apparatus located in the periphery of the object to be in an active state according to the movement of the object in consideration of the initial state of the hologram projection apparatus. In other words, all of the hologram projecting apparatuses 105 installed in the specific space 102 are in an inactive state, so that the hologram controlling apparatus 101 can project the hologram images only when the objects are adjacent to each other. ) Can be controlled to be in an activated state.

The hologram control device 101 can control the hologram projection device 105 according to the position and distance of the object more accurately by using the radar sensor representing the impulse radar module. Further, since the radar sensor senses information with a short time width of ns (nano second) units, the hologram control device 101 has high control accuracy with respect to the hologram projection device 105, Can be excellent.

2 is a view for explaining an operation of determining the position of an object and the distance from the front to the object according to an embodiment.

Referring to FIG. 2, the hologram control device may use the information received from the radar sensor to determine the position of the object and the distance from the front of the specific space to the object according to movement of the object in the specific space. Here, the hologram control device can determine the position of the sensed object and the distance from the front to the object each time new objects are detected in a specific space. The hologram control device can determine the position of an object located in a specific space by using the 2D tracking technique. More specifically, the 2D tracking technique may refer to a technique of receiving a signal reflected by an object located on a two-dimensional plane and tracking the received signal.

(1) Location of object

The hologram control device may use a first laser sensor installed at the corner of the ceiling of a specific space or at the center of the ceiling to perform the 2D tracking technique. In other words, the hologram control device can grasp a more accurate position by applying a 2D tracking method to an object existing in a room based on the first laser sensor.

Specifically, the first laser sensor may be installed on at least two ceilings in a specific space. The first radar sensor can emit a microwave in the form of an impulse to grasp the position of an object existing in a specific space. The first radar sensor can estimate a time-of-arrival (ToA) in which the microwave emitted in the form of an impulse is reflected back by the object.

Then, the first radar sensor can perform ranging according to the estimated arrival time. In other words, the first radar sensor can estimate the distance between the first radar sensor and the object according to the velocity and arrival time of the emitted microwave. The first radar sensor can form a detection area to grasp the position of the object more accurately on the two-dimensional plane.

The hologram control device can determine the intersection point between the detection areas as the position of the object based on the detection area formed by at least two first radar sensors.

For example, the first radar sensor may include a first radar sensor # 1 and a first radar sensor # 2 to apply the 2D tracking technique. Here, the distance between the first radar sensor # 1 and the first radar sensor # 2 may be d. The first radar sensor # 1 can be represented by coordinates (x1, y1) according to the position in the ceiling of the specific space, and the first radar sensor # 2 can be represented by the coordinates (x2, y2).

Then, the first radar sensor # 1 and the first radar sensor # 2 can respectively estimate the arrival times reflected by the objects and returned. Here, the first radar sensor # 1 and the first radar sensor # 2 can form a circular detection area having a length of R1 and R2, respectively, in consideration of the distance from the object to the estimated arrival time.

The hologram control device can determine the intersection points formed by the arcs of the detection areas formed by the first radar sensor # 1 and the first radar sensor # 2 as the position of the object. At this time, the hologram control device can determine the position (x, y) of the object among the two intersection points formed by the arc of the detection area, considering the direction in which the signal reflected by the object is transmitted.

(2) Distance from front to object

The hologram control device can determine the distance from the front to the object by using the second radar sensor installed on the front surface of the specific space.

The second radar sensor can transmit the microwave in the form of an impulse to grasp the position of an object existing in a specific space. The second radar sensor can estimate the arrival time of the microwave emitted in the form of an impulse reflected by the object. The second radar sensor can perform ranging according to the estimated arrival time.

The hologram control device can estimate the distance between the second radar sensor and the object according to the velocity and arrival time of the microwave transmitted. At this time, the hologram control device can consider not only the distance from the front to the object, but also the distance from the front to the hologram projection device. In other words, the hologram control device can set the hologram image projected through the hologram projection device differently according to the point where the object is located. Therefore, the hologram control device can control the hologram projection device according to the position where the object exists by measuring the distance from the object and the hologram projection device from the front.

Further, the hologram projection apparatus may have different positions and numbers depending on the structure of the specific space or the hologram image to be projected.

3 is a view for explaining an operation of controlling the hologram projection apparatus according to the position and distance of an object according to an embodiment.

Referring to FIG. 3, the hologram control device can control the hologram projection device in correspondence with the position and the position of an object entering a specific space. At this time, the hologram control device can control the hologram projection device located in the periphery of the object to be in an inactive state according to the movement of the object, considering the initial state of the hologram projection device.

Referring to FIG. 3A, the hologram control device recognizes a newly entered object in a specific space and can control the hologram projection device according to the recognized object. At this time, the initial state of the hologram projection apparatus may be in an activated state. In other words, the hologram control device can keep the hologram projection device in an active state so that the object can recognize the hologram image through the hologram projection device while recognizing the object entering the specific space.

3 (b) and 3 (c), the hologram control apparatus can control the hologram projection apparatus to be in an inactive state in accordance with the movement of the object in a specific space. In other words, the hologram image is projected from the hologram projection device, and a more accurate shape can be expressed while maintaining a certain distance from the object. Therefore, the hologram control apparatus can control the hologram projection apparatus that projects the hologram image in a deactivated state in consideration of the distance between the hologram projection apparatus and the object according to the movement of the object.

In other words, the hologram control device can set the initial state to the activated state of the hologram projection device. In addition, the hologram control device can control the hologram projection device disposed at a place where there is no sight line according to the movement of the object to be in an inactive state. That is, the hologram control device can control the excessive hologram projection device to the inactive state after the user has already confirmed the hologram image.

4 is a view for explaining an operation of controlling the hologram projection apparatus according to the position and distance of an object according to another embodiment.

Referring to FIG. 4, the hologram control device can control the hologram projection device in correspondence with the position and the position of an object entering a specific space. At this time, the hologram control device can control the hologram projection device located in the periphery of the object to be in an active state according to the movement of the object, considering the initial state of the hologram projection device.

Referring to FIG. 4 (a), the hologram control device recognizes a newly entered object in a specific space and can control the hologram projection device according to the recognized object. At this time, the initial state of the hologram projection apparatus may be in an inactive state. In other words, the hologram control device can maintain the deactivated state in order to control the hologram projection device adjacent to the object to be activated according to the movement of the object entering the specific space.

Referring to FIGS. 4 (b) and 4 (c), the hologram control device can control the hologram projection apparatus to be in an activated state according to the movement of an object in a specific space. In other words, the hologram control device can provide the hologram image to the object by controlling the hologram projection device located at the position where the object's eye line touches, according to the motion of the object. At this time, the hologram control device can control the hologram projection device located at a position where the object's eyes are out of the inactive state.

In other words, the hologram control device can activate the hologram projection device disposed at a place where the object's eye line is touched according to the movement of the object, thereby providing the object hologram image excited in real time through the hologram projection device.

As a result, the hologram control device recognizes the object entering the specific space at 350 degrees in all directions, changes the hologram image projected from the hologram projection device according to the change of the position and distance according to the movement of the object, .

Further, since the hologram control device determines the position and distance of the object based on the impulse radar sensor, it is not necessary to wear a separate device for the object, and the hologram image can be viewed more conveniently.

5 is a view for explaining an operation of controlling a hologram projection apparatus according to an object path according to an embodiment.

Referring to FIG. 5, the hologram control device can control the hologram projection device to be in an active state corresponding to an object entering a specific space. In other words, the hologram control device can maintain the state of all the hologram projection devices installed in a specific space in an active state, and can control the hologram projection device located around the object in a deactivated state according to the movement of the object.

Here, the hologram projection apparatus can display whether the hologram projection apparatus is in the active state or in the inactivated state through the LED which can confirm the current state. For example, if the LED is illuminated, the hologram projection device may indicate an active state. Conversely, if the LED is not illuminated, the hologram projection device may indicate a deactivation state.

Referring to FIG. 5A, the hologram projection apparatus is maintained in the activated state, and different hologram images can be projected according to the positions arranged in the specific space. Here, the reason why the hologram projection apparatus is fully activated is that, in the case of a user who first enters a specific space, it may not be possible to precisely grasp the hologram image projected by each hologram projection apparatus. Therefore, the hologram control device can be guided by activating the hologram projection device and providing a hologram image so that the position can be moved according to the interest of a user who has entered a specific area.

Referring to FIG. 5 (b), the hologram control device can control the hologram projection device disposed in a non-sighted state of the object to be in an inactive state according to the movement of the object. At this time, the hologram control device can judge the hologram projection device disposed at a place that is out of sight by considering the position, movement direction of the object on the two-dimensional plane, and distance from the object from the front. Then, the hologram control device can control the state of the judged hologram projection device to the inactive state.

6 is a view for explaining an operation of controlling a hologram projection apparatus according to an object path according to another embodiment.

Referring to FIG. 6, the hologram control apparatus can control the hologram projection apparatus to be in a deactivated state in correspondence with an object that has entered a specific space. At this time, when the initial state of the hologram projection apparatus is in the inactive state, the hologram control apparatus can maintain the state without any control over the hologram projection apparatus.

The hologram control apparatus can control the state of the hologram projection apparatus installed in the specific space from the inactive state to the active state in accordance with the movement of the object entering the specific space.

6A, when the hologram projection apparatus is in the inactive state, the hologram control apparatus can control the hologram projection apparatus to be in an active state in consideration of the position, the moving direction of the object, and the distance from the front to the object. Here, the hologram control device can control the hologram projection device located at a position where the object's eye line is in contact.

Referring to FIG. 6 (b), the hologram control apparatus can control the hologram projection apparatus to be in an active state in consideration of a movement path according to the motion of the object. Here, the hologram control device can control the hologram projection device located at a position where the object's eye is in contact as described above.

And, the hologram control device can control the hologram projecting device located at a place where the object's eye line is in contact, i.e., the hologram projecting device installed in an over-the-object position from the active state to the inactive state. Here, the hologram control device can provide different hologram images according to objects entering a specific space. In other words, the hologram control device can provide different hologram images through the hologram projection device according to the characteristics of the object, that is, male / female / child / adult.

For example, when the characteristic of the object is a child, the hologram control device can control the hologram projection device to project a popular character suitable for a child's eye level, a point at which the hologram image is formed, at a low level.

The methods according to embodiments of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and configured for the present invention or may be available to those skilled in the art of computer software.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

101: Hologram control device
102: Specific space
103: First radar sensor
104: Second radar sensor
105: Hologram projection device

Claims (7)

A hologram control method performed by a hologram control device,
Performing radio synchronization with the radar sensors to recognize a new object in a specific space;
A signal reflected by the object among the two intersection points formed in an arc in the detection area of the radar sensors installed at each corner of the ceiling of the specific space is transmitted based on the movement of the object moving in the specific space Determining one intersection according to a direction as a position of an object;
Determining a distance from the front to the recognized object using radar sensors installed in front of the specific space; And
Controlling at least one hologram projection device installed adjacent to the object among the plurality of hologram projection devices installed in the specific space based on the determined position of the object in the specific space and the distance from the front to the object
Lt; / RTI >
Wherein the controlling comprises:
And controlling the hologram image projected through the adjacent hologram projection device to change according to the changed distance in consideration of a change in the distance from the front depending on the position of the object moving in the specific space. delete delete The method according to claim 1,
Wherein the step of determining the intersection as the position of the object comprises:
A detection area for detecting an object in consideration of the arrival time at which the signal reflected from the object is transmitted to the two or more first radar sensors, and a hologram control unit for determining a crossing point of the set detection area as a position of the object Way. The method according to claim 1,
Wherein determining the distance to the recognized object comprises:
Wherein the distance between the object and the second radar sensor is determined based on the arrival time of the signal reflected from the object to the second radar sensor. The method according to claim 1,
Wherein the controlling comprises:
And controlling the hologram projection device disposed in the specific space to be in an inactive state when the object enters the specific space when the hologram projection device is activated. The method according to claim 1,
Wherein the controlling comprises:
And controlling the hologram projection device located in the specific space to be in an activated state when the object enters the specific space, in accordance with the movement of the object in a deactivated state.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002244218A (en) * 2001-02-13 2002-08-30 Denso Corp Hologram display device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002244218A (en) * 2001-02-13 2002-08-30 Denso Corp Hologram display device

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