WO2015102473A1

WO2015102473A1 - Method and device for generating three-dimensional image, using diffraction plate

Info

Publication number: WO2015102473A1
Application number: PCT/KR2015/000115
Authority: WO
Inventors: 정병조; 박지훈; 하명진; 장원혁
Original assignee: 연세대학교 원주산학협력단
Priority date: 2014-01-06
Filing date: 2015-01-06
Publication date: 2015-07-09
Also published as: KR101556740B1; KR20150081549A

Abstract

A device for generating a three-dimensional image comprises: a diffraction plate which is positioned between an imaging device and an object and rotates alternately in a first direction and a second direction; a control unit for controlling the diffraction plate and the imaging device such that a first image is obtained by the imaging device when the diffraction plate is positioned at a first position corresponding to the first direction, and for controlling the diffraction plate and the imaging device such that a second image is obtained by the imaging device when the diffraction plate is positioned at a second position corresponding to the second direction; and an image output unit for generating a first three-dimensional image of the object on the basis of the first image and the second image received from the imaging device, and outputting the first three-dimensional image to a display, wherein the control unit generates a control command for changing the motion of the diffraction plate on the basis of an input received from a user's device, and the image output unit generates a second three-dimensional image of the object corresponding to the changed motion of the diffraction plate.

Description

Method and device for generating three-dimensional image using diffraction plate

A method and device for generating a three-dimensional image using a diffraction plate.

In general, as shown in Figure 1, the distance between the human interpupillary (interpupillary) is a constant 60-65mm, and when a person looks at the target object, the viewing angle between the two eyes and the object, which is the angle Depending on the depth of the three-dimensional image. By adjusting this angle, the depth of the 3D image can be adjusted and accurate visual information can be provided.

Conventionally, two cameras are used to implement a three-dimensional image. In this case, the characteristics of the images obtained from two different cameras are different from each other, and when a three-dimensional image is obtained from this, an error of the image is generated, which causes an observer to experience visual fatigue when the three-dimensional image is observed. It also requires a lot of money because it uses two different cameras.

As a prior art, Korean Patent Laid-Open Publication No. 10-2007-0088876 relates to a stereoscopic video recording apparatus for capturing a stereoscopic video of a proximity object, in order to photograph a stereoscopic video of a proximity object, three-dimensional with one camera and a transparent plate Create a video, but in the circular transparent plate, a part of the outer portion of the transparent plate forming the empty space, and the remaining portion of the outer portion of the transparent plate as the remaining portion of the non-empty space as the refracting portion. When the transparent plate is rotated by the rotation of the rotating means and the refraction portion blocks around the optical axis of the camera lens group, the incident image is refracted according to the refractive index of the refraction portion. When the pass portion is located at the optical axis of the camera lens group, the incident image is refracted. It will pass without it. Therefore, two images, which are refracted and unrefractive, can be obtained by periodic rotation of the transparent plate, and a three-dimensional image is produced from these two different images.

In Korea Patent Publication No. 10-2007-0088876, when an image obtained through a transparent plate is obtained, a change in the characteristics (focal length) of the image occurs due to a change in refractive index, whereas an image is obtained in the air without passing through the transparent plate. In one case, there is no change in the characteristics of the image (focal length). When a three-dimensional image is produced using two two-dimensional images having different characteristics of the image, the viewer feels visual fatigue.

The problem to be solved by the present invention is to provide a method and device for generating a low-cost, three-dimensional image by reducing the visual fatigue, using a camera and a diffraction plate.

Another object of the present invention is to provide a three-dimensional image generation method, comprising a camera and a diffraction plate, by controlling the rotation of the transparent diffraction plate by a motor to obtain a three-dimensional image by alternately acquiring the left and right images And to provide a device.

Another object of the present invention is to control the angle of rotation of the diffraction plate, to control the image acquisition through the camera, to control the glasses in the control unit (MCU), the user wearing the glasses, and output in real time It is to provide a method and device for generating a three-dimensional image, which makes it possible to observe the three-dimensional image.

Another problem to be solved by the present invention, when the diffraction plate is rotated in the first direction with respect to the optical axis, when the image of the object is acquired, the image acquisition time is moved to the left in parallel to obtain a result of obtaining the image, on the contrary transparent When the diffraction plate is rotated in the second direction, a method and a device for generating a 3D image, which result in obtaining an image by moving the image acquisition time point to the right when the image of the object is acquired.

Another problem to be solved by the present invention, by controlling the rotation speed of the transparent diffraction plate, the number of frames of the image can be adjusted, and also by adjusting the rotation angle of the transparent plate to adjust the depth of the three-dimensional image recognized by the human It is to provide a method and device for generating a three-dimensional image.

Another problem to be solved by the present invention is to use a single camera, there is no visual fatigue can observe the three-dimensional image in real time, and in addition, compared to the three-dimensional imaging system using two cameras, the performance is less three-dimensional image generation It is to provide a method and a device.

However, the technical problem to be achieved by the present embodiment is not limited to the technical problems as described above, and further technical problems may exist.

As a means for achieving the above-described technical problem, the three-dimensional image generating device according to an embodiment of the present invention, the diffraction plate is located between the imaging device and the object, and alternately rotates in the first direction and the second direction, Control the diffraction plate and the imaging device such that a first image is obtained by the imaging device when the diffraction plate is positioned at a first position corresponding to the first direction, and the diffraction plate corresponds to the second direction. A control unit for controlling the diffraction plate and the photographing apparatus so that a second image is obtained by the photographing apparatus when positioned at a second position, and the object based on the first image and the second image received from the photographing apparatus; And an image output unit configured to generate a first three-dimensional image of and output the first three-dimensional image to a display.

According to an example of this embodiment, the control unit generates a control command for changing the operation of the diffraction plate based on an input received from a user device, wherein the image output unit is the object corresponding to the changed operation of the diffraction plate The second three-dimensional image of the can be generated.

As a means for achieving the above technical problem, a three-dimensional image generating device according to an embodiment of the present invention, a diffraction plate that rotates alternately in a first direction and a second direction, the diffraction plate corresponds to the first direction The first image is acquired by the photographing apparatus when positioned at a first position, and the second image is obtained by the photographing apparatus when the diffraction plate is positioned at a second position corresponding to the second direction. A control unit and an image output unit for generating a three-dimensional image based on the first image and the second image, the rotary shaft of the motor is mounted on the lower end of the diffraction plate, the control unit controls the motor using a control command, The control unit generates and outputs the control command to the motor to rotate alternately in the first direction and the second direction to output to the motor. It can be made.

As a means for achieving the above technical problem, the three-dimensional image generating method according to an embodiment of the present invention, the first image is obtained by the imaging device when the diffraction plate is located in a first position corresponding to the first direction Controlling the diffraction plate and the imaging device so as to control the diffraction plate and the imaging device such that a second image is obtained by the imaging device when the diffraction plate is positioned at a second position corresponding to the second direction. Generating a first three-dimensional image of the object based on the first image and the second image received from the photographing apparatus, and outputting the first three-dimensional image to a display, received from a user device. Generating a control command for modifying the operation of the diffraction plate based on an input, and of the object corresponding to the changed operation of the diffraction plate And generating a second 3D image.

As a means for achieving the above technical problem, the three-dimensional image generating system according to an embodiment of the present invention is located between the camera unit and the object, made to rotate alternately left and right, a transparent diffraction plate, one camera When the transparent diffraction plate is rotated to the left, the left image obtained when the image acquisition time is moved in parallel to the left side is obtained, When the transparent diffraction plate is rotated to the right side the right image is obtained Is obtained, the camera unit for acquiring the left image and the right image alternately, the image output unit alternately displaying the left image and the right image alternately received from the camera unit, and the image displayed on the image output unit is left In the case of an image, the left eye glasses part becomes transparent and the right eye glasses part becomes non-transparent, That is to the right image one additional right eye left eye glasses transparent and non-transparent glass portion in the case, and may include active shutter glasses method call.

According to an example of the present embodiment, the stereoscopic image observation system includes one camera and one transparent diffraction plate, wherein the transparent diffraction plate rotates left and right, and the camera has a transparent diffraction plate left and right. In the stereoscopic image observation system which alternately acquires the left image and the right image according to the rotation of, and alternately outputs the left image and the right image through the image output unit, the rotation axis of the motor is mounted on the lower end of the transparent diffraction plate, The driving unit drives the motor according to the motor control signal, and the control unit may generate a motor control signal for causing the motor to rotate alternately left and right, and output the motor control signal to the motor driving unit.

According to an example of the present embodiment, the motor includes a motor for rotating the transparent diffraction plate, and the controller generates a motor control signal for causing the motor to rotate alternately left and right, and outputs the motor control unit to the motor driver, wherein the controller is a camera. When the image acquired from the camera is the left image, the left eye glasses are transparent and the right eye glasses are non-transparent, and when the image obtained from the camera is the right image, the right eye glasses are transparent and the left eye glasses are non-transparent. The glasses control signal may be generated and transmitted to the active shutter glasses.

According to an example of this embodiment, the camera is a CMOS camera or a CCD (Charge Coupled Device) camera, the transparent diffraction plate is mounted in the diffraction plate insertion hole of the diffraction plate frame, the lower surface of the diffraction plate frame, the rotating shaft insertion groove in the center The rod-shaped diffraction plate coupling portion is spoken, and the rod-shaped diffraction plate fixing portion having a rotation shaft insertion groove in the center and the diffraction plate coupling portion are combined, but the diffraction plate fixing portion and the diffraction plate coupling portion Between the rotation shaft of the motor can be inserted.

According to an example of the present embodiment, the rotation speed of the motor is 24 Hz or more, and the motor control signal may be a signal for controlling the rotation speed, the rotation direction, and the rotation angle of the motor.

As a means for achieving the above-described technical problem, the method for generating a three-dimensional image according to an embodiment of the present invention using a camera and one transparent diffraction plate, in the method for generating a three-dimensional image, the control unit is a motor The motor control signal is generated to transmit to the motor unit to rotate to the right, and the motor rotates to the right, the right rotation step of the motor, the control unit after the right rotation step of the motor, the right eye glasses are transparent and the left eye glasses are non-transparent The right eyeglasses transparent control step of generating a control signal to control the glasses to be transmitted to the active shutter-type glasses, the camera acquires an image on the right side and transmits the image to the control unit, the control unit to display the right image through the image output unit, Characterized in that it comprises a right image providing step.

According to an example of the present embodiment, in the three-dimensional image generation method, the control unit generates a motor control signal for rotating the motor to the left and transmits it to the motor unit to rotate the motor to the left. After the left rotation step of the left eyeglasses, the left eyeglasses are transparent and the right eyeglasses are controlled to generate an eyeglass control signal, and transmits to the active shutter-type eyeglasses, the left eyeglasses transparent control step, the camera acquires an image on the left The control unit may further include a left image providing step of displaying the left image through the image output unit.

The above-mentioned means for solving the problems are merely exemplary, and should not be construed to limit the present invention. In addition to the exemplary embodiments described above, there may be additional embodiments described in the drawings and detailed description of the invention.

According to any one of the above-described problem solving means, it is possible to provide a three-dimensional image generating method and device for providing a three-dimensional image using one imaging device and one diffraction plate. In addition, the three-dimensional image generating device and method of the present invention is provided with one diffraction plate of one imaging device, by adjusting the rotation of the diffraction plate to obtain the left and right images alternately, three-dimensional from the left and right images An image can be generated. As a result, a three-dimensional image is provided to the user without visual fatigue, and since a single camera is used, investment cost can be reduced when manufacturing a product, thereby providing a more inexpensive three-dimensional image generating device.

In addition, it is linked to the three-dimensional glasses of the active shutter method, the control of the rotation angle of the diffraction plate, the control of the photographing apparatus for image acquisition, the control of the active shutter method of the three-dimensional glasses are all performed in the three-dimensional image generating device, so that the user By wearing the present invention, it is possible to provide a method and device for generating a 3D image in which photographing of an object and outputting a 3D image of the object are performed in real time. Through this, the user can observe a three-dimensional image in real time without visual fatigue, such a three-dimensional image generating method and device can be utilized in a variety of fields, such as not only for medical, but also for gaming, education, security, entertainment. .

When the diffraction plate is rotated in the first direction based on the optical axis, the image acquisition time is shifted to the left in parallel when the object is acquired, and the result is obtained. On the contrary, when the transparent diffraction plate is rotated in the second direction. The present invention may provide a method and device for generating a 3D image that results in acquiring an image by moving the image acquisition time point to the right when acquiring an image of an object.

By controlling the rotation speed of the transparent diffraction plate, the number of frames of the image can be adjusted, and by adjusting the rotation angle of the transparent plate to adjust the depth of the three-dimensional image recognized by the human, three-dimensional image generation method and device Can be provided.

It is not a method of processing images having different image characteristics output from two or more cameras, but a three-dimensional image is generated by using images captured by one camera, and thus correction between images having different image characteristics is performed. Algorithms for additional tasks, such as tasks, may not be required.

1 is a view for explaining a three-dimensional image recognition of a person.

2A to 2D are diagrams for explaining a process of obtaining a 3D image using a diffraction plate.

3 is a diagram illustrating a general configuration of a three-dimensional image generating system according to an embodiment of the present invention.

4A and 4B are diagrams for describing an example of an operation of a 3D image generating device.

5 is a view for explaining the configuration of the three-dimensional image generating device according to an embodiment of the present invention.

FIG. 6 is an exploded perspective view for explaining fastening of the diffraction plate and the motor rotating shaft of FIG. 5.

FIG. 7 is an example of a configuration of the 3D image generating device of FIG. 5.

FIG. 8 is an example of an exploded perspective view illustrating the fastening of the diffraction plate and the motor shaft of FIG. 6.

9 is a flowchart illustrating operations of a controller and an image output unit according to an exemplary embodiment of the present invention.

10 is a flowchart illustrating a three-dimensional image generating method according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the embodiments disclosed below, each of the 3D image generating system, the device, and the method will be described as an embodiment. However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "electrically connected" with another element in between. . In addition, when a part is said to "include" a certain component, this means that it may further include other components, except to exclude other components unless otherwise stated. Further, when a member is located "on" another member, this includes not only when one member is in contact with another member but also when another member exists between the two members.

In the present specification, the term 'unit' includes a unit realized by hardware, a unit realized by software, and a unit realized by both. In addition, one unit may be realized using two or more pieces of hardware, and two or more units may be realized by one piece of hardware.

Referring to FIG. 2A, when the diffraction plate (Rotating deflector) is fixed vertically when the object is observed, there is no change in the observation point of the object. In this case, the diffraction plate may be a transparent diffraction plate (TRD). On the other hand, referring to Figures 2b and 2c, when the diffraction plate is inclined at a predetermined angle, the viewing point of the image may be moved in parallel in proportion to the angle. In addition, the observation point of the object may move in parallel to the left and the right according to the rotation direction of the diffraction plate.

2B, as the diffraction plate rotates in the first direction, the clockwise direction, or the left direction, an observation point of the object may move to the left side. In this case, the left direction may be determined based on the bending of an existing optical axis crossing the diffraction plate in the left direction.

2C, as the diffraction plate rotates in the second direction, the counterclockwise direction, or the right direction, an observation point of the object may move to the right. In this case, the right direction may be determined based on the bending of the existing optical axis traversing the diffraction plate in the right direction.

2B and 2C are merely examples of the present invention, and according to another embodiment of the present invention, as the diffraction plate rotates in the first direction, the clockwise direction, or the left direction, It may move to the right side, and the observation point of the object may move to the left side as the diffraction plate rotates in the second direction, counterclockwise direction or right direction. In general, the relationship between the direction of rotation of the diffraction plate and the viewing point of the object may vary depending on the refractive index of the diffraction plate, the ratio of the width and length of the diffraction plate, or the position of the object.

Referring to FIG. 2D, a left and right image, that is, two different images may be obtained using a diffraction plate and a photographing apparatus, and three-dimensional images may be generated through the diffraction plate and the imaging device. In this case, the 3D image may be provided to the user through the spectacle device. The spectacle device may include a passive spectacle device and an active spectacle device. One example of a passive spectacle device is a passive spectacle device using a polarizing filter.

An example of providing a 3D image to a user through a passive spectacle type device will be described. The 3D image generating device obtains a left image and a right image using a diffraction plate and a photographing apparatus, respectively, and the left image is a first directional polarization filter (eg For example, the image may be processed to be seen only through a vertical polarization filter, and the right image may be processed to be viewed only through a second direction polarization filter (eg, a horizontal polarization filter). The 3D image may be generated through the image and displayed on the screen. In this case, the left image and the right image may be disposed in the 3D image. For example, when regions of the 3D image are divided into odd lines and even lines, the left image may be disposed on the odd line of the 3D image and the right image may be disposed on the even line of the 3D image. In addition, the left spectacle portion of the passive spectacle device includes a first directional polarization filter, and the right spectacle portion of the passive spectacle device includes a second directional polarization filter, so that a user wearing the passive spectacle device can watch a three-dimensional image with a sense of depth. Will be.

An example of providing a 3D image to a user through an active spectacle type device will be described. The 3D image generating device obtains a left image and a right image using a diffraction plate and a photographing device, respectively, and sequentially outputs the left image and the right image. The 3D image may be generated as much as possible. In addition, the active eyeglass type device includes an active shutter glass module, and when one of the left images is displayed, one eyeglass part (eg, the left eyeglass part) is made transparent and the other eyeglass part is provided. (For example, the right eyeglass part) is made non-transparent, while when the right image is displayed, the other eyeglass part (for example, the right eyeglass part) is made transparent, and one eyeglass part (eg For example, by making the left eyeglass part non-transparent, a user wearing an active eyeglass device can watch a three-dimensional image having a sense of depth.

3 is a diagram illustrating a general configuration of a three-dimensional image generating system according to an embodiment of the present invention. Referring to FIG. 3, the 3D image generating system 1 may include a 3D image generating device 100, an object 110, a photographing apparatus 190, a user device 200, and a display 300. In addition, the 3D image generating device 100 may include a diffraction plate 150, a controller 160, an image output unit 170, and a motor unit 180. However, according to various embodiments of the present disclosure, the 3D image generating system 1 or the 3D image generating device 100 may be configured differently. For example, the 3D image generating device 100 may include only the diffraction plate 150, the control unit 160, and the image output unit 170, and the diffraction plate 150, the control unit 160, and the image output unit 170. And at least one of the photographing apparatus 190, the user device 200, and the display 300 together with the motor unit 180.

The diffraction plate 150 may be located between the photographing apparatus 190 and the object 110. In addition, the diffraction plate 150 may rotate alternately in a first direction and a second direction.

The diffraction plate 150 may be a transparent diffraction plate. The diffraction plate 150 may rotate at a predetermined angle and period by the motor unit 180 by itself or by the motor unit 180. When the diffraction plate 150 rotates alternately in a constant period in the first direction and the second direction, the imaging apparatus 190 may include a first image when the diffraction plate 150 is positioned at a first position corresponding to the first direction. The second image may be obtained when the diffraction plate 150 is located at a second position corresponding to the second direction. In this case, the first direction may be clockwise or leftward, and the second direction may be counterclockwise or rightward. In addition, the left direction may be determined based on the conventional optical axis traversing the diffraction plate in the left direction, and the right direction is the existing optical axis traversing the diffraction plate in the right direction. It may be determined based on. In addition, the first image may be an image of the left eye (or a left image), and the second image may be an image of the right eye (or a right image).

The diffraction plate 150 may be positioned between the object 110 and the photographing apparatus 190, and may be installed in proximity between the lens of the photographing apparatus 190 and the object 110. In addition, when the diffraction plate 150 is rotated in the left direction (or clockwise direction) with respect to the optical axis, the image of the left eye, which is a result of acquiring the image by moving the image acquisition time point to the left when acquiring the image of the object (left Image), and conversely, when the diffraction plate 150 is rotated to the right, an image of the right eye (right image), which is a result of acquiring the image by moving the image acquisition time point to the right when the image of the object is acquired, may be acquired. Can be.

According to an embodiment of the present invention, the diffraction plate 150 may be made of a cylindrical BK7 material, and the characteristics of the 3D image may be changed according to the material and thickness of the diffraction plate 150. The diffraction plate 150 rotates periodically, and the observation characteristic of the display 300 such as a computer monitor may be changed according to the rotation speed.

Diffraction plate 150 used in the present invention, as well as the BK7 material, the difference in image can be made using a different material, different type, different thickness of the refractive index of different objects.

The diffraction plate 150 may be any one of a plurality of diffraction plates. When the diffraction plate 150 is replaced with the second diffraction plate from the first diffraction plate, at least one of depth information, perspective information, or parallax information of the 3D image may be changed. At this time, any one of length, height, width (or thickness) or refractive index of each of the plurality of diffraction plates may be different from each other. That is, any one of length, height, width (or thickness) or refractive index of the first diffraction plate may be different from any one of length, height, width (or thickness) or refractive index of the second diffraction plate. For example, when the length of the first diffraction plate is 20 mm, the height is 12 mm, and the width is 8 mm, any one of the length, height, or width of the second diffraction plate 1 may be different from that of the diffraction plate. For another example, when the refractive index of the first diffraction plate is 1.79, the refractive index of the second diffraction plate may be 1.61.

When the diffraction plate 150 is replaced with diffraction plates made of materials having different refractive indices, the obtained left and right images may be different according to the refractive index of the material used in the diffraction plate 150. In addition, depending on the refractive index of the material used in the diffraction plate 150, depth information, perspective information or parallax information of the 3D image may be changed.

Replacement of the diffraction plate 150 from one of the plurality of diffraction plates to the other diffraction plate may be made manually by a user, or may be made automatically through a mechanical or electronic module.

The diffraction plate 150 may be formed by bonding a plurality of sub diffraction plates. At this time, the first sub diffraction plate may be different from or the same as the second sub diffraction plate. For example, any one of length, height, width (or thickness) or refractive index of the first sub diffraction plate may be different from any one of length, height, width (or thickness) or refractive index of the second sub diffraction plate.

For example, when one of the first and second diffraction plates is removed while the diffraction plate includes the first sub diffraction plate and the second sub diffraction plate, depth information, perspective information, or parallax of the 3D image is removed. At least one of the information may be changed. As another example, when the third sub diffraction plate is added while the diffraction plate includes the first sub diffraction plate and the second sub diffraction plate, at least one of depth information, perspective information, or parallax information of the 3D image may be changed. have. At this time, the addition or removal of the sub-diffraction plate may be made manually by a user, or may be made automatically through a mechanical or electronic module. The diffraction plate can be formed by bonding the sub diffraction plates to each other.

If the same material is used, the difference in the left and right images may be increased in proportion to the rotation angle of the diffraction plate 150. However, in the case of the same rotation angle, the difference in the left and right images as the refractive index of the material of the diffraction plate 150 is large. Can be increased. Glass, plastics, etc. each have their own refractive index.

The left and right images to be acquired are calculated according to Snell's Law. When light penetrates a specific medium, light refraction occurs (ie, when light enters the medium from the air) and passes over a certain thickness. Refraction occurs (ie, when light is emitted from the medium into the air), and the two refractions cause the difference between the left and right images obtained by refracting the image.

Table 1 shows an example of a material that can be used for the diffraction plate 150 of the present invention and its refractive index.

Table 1

Diffraction plate 150 is BK7 (borosilicate crown glass), fused silica (Fused Silica), barium fluoride (Barium fluoride), carbon (Carbon), diamond, fused germania (FUSED GERMANIA), potassium bromide (Potassium bromide), Sodium chloride, Zinc Selenide, Germanium, Aluminum arsenide, Calcium fluoride, Magnesium fluoride, Optical glass (SF11, SF10, SF5) ), Sapphire (Sapphire), zinc sulfide (Zinc sulfide), AMTIR-3, crystalline silicon (Crystalline silicon) may be made of one or more materials or combinations thereof.

The controller 160 may control the diffraction plate 150 and the imaging device 190 to acquire the first image by the imaging apparatus when the diffraction plate 150 is positioned at the first position corresponding to the first direction. . In addition, the control unit 160 is the diffraction plate 150 and the imaging device 190 so that the second image is obtained by the imaging device 190 when the diffraction plate 150 is located at a second position corresponding to the second direction. Can be controlled.

The controller 160 may generate a control command for controlling or changing the operation of the diffraction plate 150 based on an input received from the user device. In this case, the user device may be the spectacle device 200 shown in FIG. 3, or may be a separate control device. In addition, the controller 160 may generate a control command for changing the operation of the diffraction plate 150 and transmit the control command directly to the diffraction plate 150. For the operation of the diffraction plate 150, the control unit 150 may be used. It may be transmitted to the motor unit 180 to rotate.

The user device may be a spectacle device for recognizing the first three-dimensional image and the second three-dimensional image. Such spectacle device 200 may be a passive spectacle device or an active spectacle device as described above.

According to an embodiment of the present invention, the motor unit 180 may include a motor and a motor driving unit.

The motor is a motor for rotating the diffraction plate 150 at a constant angle and period, the rotation axis of the motor is connected to the bottom surface of the diffraction plate frame 150, the diffraction plate 150 is inserted, can be driven by the motor driving unit. . A stepping motor may be used as the motor, and the motor may be configured to rotate by a predetermined angle (eg, 1.8 degrees) according to the input signal.

In the present invention, the motor unit 180 is not only a stepping motor, but also any device capable of rotating the diffraction plate and the fixing device of the diffraction plate (DC / AC / Servo / Brushless DC / Hysteresis / Reluctance / Universal motor can be applied) Can be. For example, any one of a stepping motor, a DC motor, an AC motor, and a servo motor may be used as the motor.

The motor unit 180, the motor, or the motor driving unit may be driven according to a control command received from the controller 160. In this case, the control command may be a motor control command or a motor control signal. According to an embodiment of the present invention, the number of frames of the image may be adjusted by controlling the rotation speed of the diffraction plate 150, that is, the rotation speed of the motor. In addition, through the control of the rotation angle of the diffraction plate 150, that is, the rotation angle of the motor, the depth of the 3D image recognized by a person may be adjusted. The minimum rotational speed of the motor can be determined at 24Hz, which is observed without any interruption (flicker) when the image is viewed by a person. The final observed three-dimensional image may require a rotational speed of 24 Hz or more in order to observe seamlessly, but the present invention does not mean that the rotational speed of the motor must be 24 Hz or more. In some cases, the rotational speed of the motor is 24 Hz. The following may be sufficient.

When the left and right images are acquired sequentially, one left image and one right image may generate one three-dimensional image information. In general, when an image displayed per second is 24 frames or more, a frame of the 3D image may also be determined at 24 frames or more per second, in consideration of the fact that a person does not recognize a break. To this end, the rotation speed of the diffraction plate 150 may also be increased.

The image output unit 170 may generate a first three-dimensional image of the object 110 based on the first image and the second image received from the photographing apparatus 190, and output the first three-dimensional image to the display 300. Can be.

According to one embodiment of the invention, the controller 160 generates a control command for changing the operation of the diffraction plate 150 based on an input received from the user device, the image output unit 170 is a diffraction plate ( The second 3D image of the object corresponding to the changed operation of 150 may be generated. For example, the controller 160 generates a control command for changing the rotation angle of the diffraction plate 150 based on an input received from the user device, and the image output unit 170 may not operate the diffraction plate 150. After the change, a second three-dimensional image different from the first three-dimensional image may be generated.

According to one embodiment of the present invention, the diffraction plate 150 performs an operation such that the rotation angle of the diffraction plate 150 is changed from the first rotation angle to the second rotation angle based on the control command of the control unit 160. You can change it. In this case, the depth information or perspective information of the second 3D image may be different from the depth information or perspective information of the first 3D image.

According to an embodiment of the present invention, the diffraction plate 150 may change an operation such that the rotation speed of the diffraction plate 150 is changed from the first rotation speed to the second rotation speed based on the control command. In this case, the frame information of the second 3D image may be different from the frame information of the first 3D image.

According to an embodiment of the present disclosure, the controller 160 may generate a control command to make the first eyeglasses transparent and the second eyeglasses non-transparent while the first image is output through the display 300. . In this case, the control command may be an eyeglass control command or an eyeglass control signal. In addition, the controller 160 may generate a control command to make the first glasses portion transparent and the second glasses portion transparent while the second image is output through the display 300. In addition, the controller 160 may transmit the generated at least one control command to the user device.

The user device may be the spectacle device 200. In addition, the first spectacle portion may be either a left eye spectacle lens or a right eye spectacle lens of the spectacle device 200, and the second spectacle portion may be another left eye spectacle lens or a right eye spectacle lens.

The controller 160 may transmit the generated at least one control command to the spectacle device 200. In this case, the user device may be a separate control device from the spectacle device 200. The separate control device may be configured separately from the spectacle device 200, but may be included in the spectacle device 200 as some modules of the spectacle device 200. An example of the control device may be any one of various forms such as a hardware button, a graphic icon module, a smart phone, and a touch input module.

The user device may be a mobile device. For example, the controller 160 controls at least one of the 3D image generating device 100, the photographing apparatus 190, the spectacle device 200, or the display 300 from the mobile device through a user interface installed through an app on the mobile device. Receiving an input for controlling or an input for changing the characteristics of the three-dimensional image, and performs an operation for generating a three-dimensional image in response to such an input, the image output unit 170 is a glasses-type device ( 200). In addition, the characteristics of the 3D image may be a depth, perspective, parallax, frame or resolution of the 3D image.

According to various embodiments of the present invention, the mobile device may be various types of devices. For example, the mobile device may be a computer or portable terminal capable of connecting to a remote server via a network. Here, an example of a computer includes a laptop, desktop, laptop, etc., which is equipped with a web browser, and an example of a portable terminal is a wireless communication device that guarantees portability and mobility. Communication System (GSM), Global System for Mobile communications (GSM), Personal Digital Cellular (PDC), Personal Handyphone System (PHS), Personal Digital Assistant (PDA), International Mobile Telecommunication (IMT) -2000, Code Division Multiple Access (CDMA) All types of handheld-based wireless communication devices such as 2000, W-CDMA (W-Code Division Multiple Access), Wibro (Wireless Broadband Internet) terminals, smartphones, tablet PCs, etc. may be included. .

The photographing apparatus 190 may include a camera 197 and a lens 192.

The lens 192 may be an imaging lens, may be installed at the front end of the photographing apparatus 190, and may be positioned in close proximity to an object to receive an image of the object to be photographed. An incident tie may be formed by converging an image incident through the lens 192.

The camera 197 may be a CMOS camera or a charge coupled device (CCD) camera. The camera 197 may sequentially acquire and output the image of the left eye and the image of the right eye based on the vertical frequency output from the CCD included in the camera 197.

Referring to FIG. 3, the controller 160 includes an image output unit 170 as a separate unit. However, according to an embodiment of the present invention, the controller 160 and the image output unit 170 include one microcontroller. It may also consist of a unit MCU. In this case, one micro control unit (MCU) may be called a control unit.

The controller 160 may control the motor unit 180 and the photographing apparatus 190. In addition, the controller 160 may control the spectacle device 200. The controller 160 generates a control command for controlling the rotational speed, the rotational direction, and the rotational angle of the motor and outputs the control command to the motor unit 180, and the first eyeglass unit (eg, the left eyeglass unit) of the spectacle device 200. ) And a control command for controlling the second eyeglass unit (eg, the right eyeglass unit) may be generated and output to the spectacle device 200.

In addition, the photographing apparatus 190 may be included in the 3D image generating device 100. At this time, the photographing apparatus 190 acquires a first image when the diffraction plate 150 is positioned at a first position corresponding to the first direction under the control of the controller 150, and the diffraction plate 150 is When positioned at a second position corresponding to the second direction, a second image may be acquired.

4A and 4B are diagrams for describing an example of an operation of a 3D image generating device. Referring to FIG. 4A, when the left image is displayed on the display 300, the control unit 160 makes the left eyeglasses (left eyeglasses) transparent and the right eyeglasses (right eyeglasses) of the spectacle device 200. It is possible to output a control command for controlling to be transparent. 4B, when the right image is displayed on the screen, the controller 160 makes the right eyeglass part (right eyeglass) transparent in the spectacle device 200 and the left eyeglass part (left eyeglass). It is possible to output a control command that controls the to be non-transparent. As a result, the left image transmits a signal to the left eye of the person, and the right image transmits a signal to the right eye of the person. As a result, it can be recognized as three-dimensional information in the human brain.

According to the rotation speed, direction, and angle of the diffraction plate 150, different 3D stereoscopic images may be observed in the human eye. At this time, the rotation direction, rotation speed, and stop time (observation time) of the diffraction plate 150 may be synchronized with the operation of the spectacle device 200 used for the final image observation so that the observed image may be observed or controlled in real time. Can be. To this end, the controller 160 may control the diffraction plate 150 and the spectacle device 200 such that the diffraction plate 150 rotates and synchronizes with the spectacle device 200 at a specific time.

The image output unit 170 may receive an image of the left eye and an image of the right eye output from the camera and transmit the image to the display 300. The image output unit 170 may be made of a computer, a microprocessor, an MCU, and the like.

In some cases, the controller 160 and the image output unit 170 may be formed of one operation processor, and the controller 160 may control the camera as well as the glasses-type device 200. All parts of the system of the present invention may be synchronized with each other because they control both the camera, motor and glasses.

The display 300 displays the image received from the image output unit 170 on the screen, that is, the image of the left eye and the image of the right eye may be sequentially output. However, as described above, the image received from the image output unit 170 may be processed through a first direction polarization filter (for example, a vertical direction polarization filter), and the left image and the second direction polarization filter ( For example, the processed right image may be arranged in one screen so that it can be viewed only through a horizontal polarization filter. In this case, the image of the left eye and the image of the right eye may be simultaneously output in one screen. One example of the display 300 may be a monitor, a projector, or the like.

The spectacle device 200 may be a means used for observing an image of the display 300 which sequentially displays an image of a left eye and an image of a right eye in real time. The spectacle device 200 is an active shutter glasses, and may include an active shutter glass module (not shown). In addition, the active shutter glasses may include a left eye glasses corresponding to the left eyeglasses, and a right eye glasses corresponding to the right eyeglasses.

The active shutter glass module (not shown) is a means for controlling the left eye glasses and the right eye glasses of the active shutter glasses, and the controller 160 transparently controls any one of the left eye glasses and the right eye glasses by using a control command. And control the other to be non-transparent.

The spectacle device 200 may be included in the 3D image generating device 100. At this time, the spectacle device 200 makes the first spectacles transparent and the second spectacles non-transparent while the first image is output through the display 300, but the second image is output through the display 300. The first spectacles may be made non-transparent while the second spectacles are transparent. In addition, the spectacle device 200 may perform this operation under the control of the controller 150.

According to an embodiment of the present invention, the three-dimensional image generating device is to be positioned in the first position corresponding to the first direction and the diffraction plate 150, the diffraction plate 150 rotates alternately in the first direction and the second direction A control unit to acquire a first image by the photographing apparatus 190 and to acquire a second image by the photographing apparatus 190 when the diffraction plate 150 is positioned at a second position corresponding to the second direction. And an image output unit 170 that generates a 3D image based on the first image and the second image. At this time, the rotary shaft of the motor is mounted on the lower end of the diffraction plate 150, the control unit 160 controls the motor by using a control command, the control unit 160 is the motor alternately in the first direction and the second direction Can generate a control command to rotate the motor and output it to the motor.

According to an embodiment of the present invention, the 3D image may include a first image and a second image. In this case, the 3D image may include the first image and the second image at the same time through one screen or frame, or may include the first image and the second image sequentially through a plurality of screens or frames. Also, the 3D image may be a new image processed from the first image and the second image.

According to an embodiment of the present invention, the 3D image generating device 100 may further include a lens unit (not shown) including at least one lens between the diffraction plate 150 and the object. In this case, the at least one lens may be an objective lens, and an optical system may be configured to allow the field of view to be focused to one place through the objective lens. As a result, an optical system similar to a human visual structure may be configured to generate a three-dimensional image that provides a more realistic three-dimensional effect. An example of such a lens may be the lens shown in FIG. 2D.

At least one lens of the lens unit (not shown) may be disposed in the lens wheel. In addition, the lens wheel may be manufactured in a circular shape, and may include a plurality of lenses. In this case, the lens positioned between the diffraction plate 150 and the object may be changed according to the rotational movement of the lens wheel, thereby changing the characteristics of the three-dimensional image. The characteristic of the 3D image may be depth, perspective, parallax, or the like as described above.

When lenses with different performances (or objectives are replaced depending on the situation through the lens wheel), the sharpness of the perspective or the focusing point is different depending on the different focal lengths, as if to simulate various human focal lengths. Can be controlled.

According to an embodiment of the present invention, the above-mentioned various parameters such as the refractive index, the rotational speed, the rotation angle, the midstream, and the type of the lens of the diffraction plate are determined differently, so that the resolution, brightness, depth, perspective, parallax of the 3D image is different. And so on. Through this, the method and device for generating a 3D image according to an embodiment of the present invention may provide a customized 3D image according to a usage environment, a purpose of use, or real time adjustment. For example, when the 3D image generating device 100 is used for medical purposes, the 3D image generating device 100 may support full resolution, or may provide a brighter image when used as an endoscope or a microscope. In addition, the 3D image generating device 100 may generate a 3D image for the passive spectacle device so that all of the 3D image generating apparatus 100 may simultaneously provide the 3D image to a plurality of users.

5 is a view for explaining the configuration of the three-dimensional image generating device according to an embodiment of the present invention. 6 is an exploded perspective view for explaining the fastening of the diffraction plate and the motor rotating shaft of FIG.

Referring to FIG. 5, a camera 197 on which a photographing apparatus 190, that is, a lens 192 is mounted, may be mounted on a camera holder 199. In addition, while being spaced apart from the camera cradle 199, the motor cradle 189 is mounted, one side of the motor cradle 189, the motor housing 181 of the motor unit 180 may be mounted.

The motor and the motor driving unit are built in the motor housing 181, and the rotation shaft 188 of the motor may be coupled to the diffraction plate 150 through a through hole in the upper surface of the motor housing 181.

Referring to FIG. 6, the diffraction plate 150 may be inserted into the diffraction plate insertion hole 151, which is a through hole provided in the diffraction plate frame 157. On the bottom surface of the diffraction plate frame 157, a rod-shaped diffraction plate frame coupling portion 156 having a center rotation shaft insertion groove 187 may be spoken. In addition, as shown in FIG. 6, the diffraction plate 150 may be formed in a cylindrical shape, but is not limited thereto.

The diffraction plate frame fixing portion 159 may be in the form of a rod, and has a central rotation shaft insertion groove 187, and the diffraction plate coupling portion 156 and the diffraction plate frame on both sides of one end of the rotation shaft 188 of the motor. After the fixing part 159 is mounted, the fixing part 159 may be fixed through the screw 153 inserted into the screw insertion hole 152.

In combination with the diffraction plate frame engaging portion 156 and the diffraction plate frame fixing portion 159, a through hole is formed by the rotating shaft insertion grooves 187, and the rotating shaft 188 of the motor is inserted into the through hole, and the diffraction plate The frame coupling part 156 and the diffraction plate frame fixing part 159 may be fixed by the screw 153.

The object holder 119 may be spaced apart from the motor holder 189, and an object placed on the object holder 119 may be captured by the photographing apparatus 190.

FIG. 7 is an example of a configuration of the 3D image generating device of FIG. 5. 8 is an example of an exploded perspective view showing the fastening of the diffraction plate and the motor rotating shaft of FIG.

3, 5, and 7, the diffraction plate 150 is positioned between the object 110 and the photographing apparatus 190, and the lens 192 and the photographing target 110 of the photographing apparatus 190 are provided. It can be installed close to.

In the present invention, when the diffraction plate 150 is located at a position closer to the focal length of the lens 192 of the imaging apparatus, a smaller size diffraction plate may be used. That is, in addition to the size of the diffraction plate 150, an optical system having a different size may be selectively used according to the position of the diffraction plate. When the lens 192 of the photographing apparatus is composed of a lens system composed of a plurality of lenses, the diffraction plate 150 can be positioned between the lens systems of the photographing apparatus, and in this case, according to the configuration of the lens system to be used, The size can be reduced.

If the diffraction plate 150 is placed in front of the lens 192 of the photographing apparatus, the size of the lens may be the same as that of the lens. However, if the diffraction plate 150 is placed among the lenses 192 of the photographing apparatus, the size of the diffraction plate 150 may be reduced.

Various methods may exist in the method of constructing the lens 192, and the position and size of the diffraction plate may be elastically determined according to the method. When the diffraction plate is positioned at the internal focal position of the system of the lens 192, the diameter of the diffraction plate may be reduced from 25 mm to 10 mm or less.

In the step of rotating the motor in the right direction, the controller 160 may transmit the control command to rotate the motor in the right direction to the motor of the motor unit 180, thereby allowing the motor to rotate in the right direction (S110).

In the right eye eyeglasses transparent control step, the control unit 160 controls a control command for controlling the right eye eyeglasses (right eyeglasses) to become transparent and the left eye eyeglasses (left eyeglasses) after the motor rotates in the right direction. In operation S120, it may be transmitted.

In the step of providing the right image, the image output unit 170 may acquire the right image from the photographing apparatus 190 and transmit the image to the display 300 (S130), and the display 300 may display the right image (S140). .

In the step of rotating the motor in the left direction, the controller 160 may transmit the control command to rotate the motor in the left direction to the motor of the motor unit 180, thereby allowing the motor to rotate in the left direction (S210).

In the left eyeglasses transparent control step, the control unit 160 controls a control command to control the left eyeglasses (left eyeglasses) to become transparent and the right eyeglasses (right eyeglasses) to become non-transparent after the motor rotates in the left direction. In operation S220, the transmission may be performed.

In a step of providing a left image, the image output unit 170 may obtain a left image from the photographing apparatus 190 and transmit it to the display 300 (S230), and the display 300 may display a left image (S240). .

The driving of the control unit 160 and the image output unit 170, the operation of the control unit 160 and at the same time the rotation of the motor, the characteristics of the motor rotates by a predetermined angle according to the input signal, the rotation angle After the rotation until the motor is temporarily stopped, the three-dimensional glasses control, and the camera can proceed to acquire the image can be observed by the user through the display 300. In addition, the control unit 160 and the image output unit 170 may repeat the same process while the motor starts to rotate in the left direction after all these processes.

According to the present invention, a monocular camera and a diffraction plate may be mounted on a motor to alternately obtain left and right images according to the rotation of the motor, and the user may observe this as a three-dimensional image in real time using a computer or a projector.

In the present invention, in the case of forming a single optical system with a single camera, unlike using two different cameras, since one camera is used, the characteristics of an image obtained by using the same are the same, and thus the image having the same image characteristics is three-dimensional. By acquiring the image, there is no visual fatigue.

10 is a flowchart illustrating a three-dimensional image generating method according to an embodiment of the present invention. Since the three-dimensional image generating method of FIG. 10 is performed by the three-dimensional image generating system 1 or the three-dimensional image generating device 100 described above with reference to the drawings, the contents not described below are three-dimensional image generation through the above drawings. The contents described for the system 1 or the three-dimensional image generating device 100 apply mutatis mutandis.

In operation S1001, the 3D image generating device 100 may control the diffraction plate and the imaging apparatus such that the first image is acquired by the imaging apparatus when the diffraction plate is positioned at the first position corresponding to the first direction.

In operation S1002, the 3D image generating device 100 may control the diffraction plate and the imaging apparatus such that the second image is acquired by the imaging apparatus when the diffraction plate is positioned at the second position corresponding to the second direction. In operation S1003, the 3D image generating device 100 may generate a first 3D image of the object based on the first image and the second image received from the photographing apparatus. In operation S1004, the 3D image generating device 100 may output the first 3D image to a display. In operation S1005, the 3D image generating device 100 may generate a control command for changing an operation of the diffraction plate based on an input received from the user device. In operation S1006, the 3D image generating device 100 may generate a second 3D image of the object corresponding to the changed operation of the diffraction plate.

In the above description, steps S1001 to S1006 may be further divided into additional steps, or combined into fewer steps, according to embodiments herein. In addition, some steps may be omitted as necessary, and the order between the steps may be changed.

The above-described three-dimensional image generating method may also be implemented in the form of a recording medium including instructions executable by a computer, such as a program module executed by a computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, computer readable media may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transmission mechanism, and includes any information delivery media.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

Claims

In the device for generating a three-dimensional image,

A diffraction plate positioned between the photographing apparatus and the object and rotating alternately in a first direction and a second direction;

Control the diffraction plate and the imaging device such that a first image is acquired by the imaging device when the diffraction plate is positioned at a first position corresponding to the first direction, and the diffraction plate corresponds to the second direction. A control unit controlling the diffraction plate and the photographing apparatus such that a second image is obtained by the photographing apparatus when the second position is positioned at the second position; And

An image output unit configured to generate a first three-dimensional image of the object based on the first image and the second image received from the photographing apparatus, and output the first three-dimensional image to a display;

The control unit generates a control command for changing the operation of the diffraction plate based on an input received from a user device,

And the image output unit generates a second three-dimensional image of the object corresponding to the changed operation of the diffraction plate.
The method of claim 1,

The user device is a three-dimensional image generating device, characterized in that the glasses-type device for recognizing the first three-dimensional image and the second three-dimensional image.
The method of claim 1,

The controller makes the first glasses portion transparent and the second glasses portion non-transparent while the first image is output through the display, but the first glasses portion is non-transparent while the second image is output through the display. And at least one control command to make the transparent and the second spectacles transparent.
The method of claim 1,

The diffraction plate changes an operation such that the rotation angle of the diffraction plate is changed from the first rotation angle to the second rotation angle based on the control command,

The depth information or perspective information of the second three-dimensional image is different from the depth information or perspective information of the first three-dimensional image, 3D image generating device.
The method of claim 1,

The diffraction plate changes an operation such that the rotation speed of the diffraction plate is changed from the first rotation speed to the second rotation speed based on the control command,

The frame information of the second three-dimensional image is different from the frame information of the first three-dimensional image, 3D image generating device.
The method of claim 1,

And the user device comprises any one of a hardware button, a graphic icon, and a touch input unit for generating the input.
The method of claim 1,

And a lens unit positioned between the diffraction plate and the object, the lens unit including at least one lens.
The method of claim 1,

The diffraction plate is any one of a plurality of diffraction plate,

When the diffraction plate is replaced with the second diffraction plate from the first diffraction plate, at least one of depth information, perspective information or parallax information of the first 3D image is changed,

Any one of a length, height, width (or thickness) or refractive index of the first diffraction plate is different from any one of length, height, width (or thickness) or refractive index of the second diffraction plate. Generation device.
The method of claim 1,

The diffraction plate includes a first sub diffraction plate and a second sub diffraction plate,

And when one of the first sub-diffraction plate and the second diffraction plate is removed, at least one of depth information, perspective information, or parallax information of the first three-dimensional image is changed.
The method of claim 1,

The three-dimensional image generating device,

A first image is acquired when the diffraction plate is positioned at a first position corresponding to the first direction under the control of the controller, and when the diffraction plate is positioned at a second position corresponding to the second direction, And a photographing apparatus for acquiring two images.
The method of claim 2,

Make the first spectacles transparent while the first image is output through the display, and make the second spectacles transparent, but make the first spectacles non-transparent while the second image is output through the display. And a spectacle type device for making the second spectacle portion transparent.
The method of claim 1,

The photographing apparatus is a CMOS camera or a Charge Coupled Device (CCD) camera, 3D image generating device.
The method of claim 1,

The diffraction plate is mounted in the diffraction plate insertion hole of the diffraction plate frame,

On the lower surface of the diffraction plate, a rod-shaped diffraction plate coupling portion having a rotation shaft insertion groove in the center is spoken,

The rod-shaped diffraction plate frame fixing portion having a rotation shaft insertion groove in the center, and the diffraction plate frame coupling portion is coupled, characterized in that the rotating shaft of the motor is inserted between the diffraction plate frame fixing portion and the diffraction plate frame coupling portion, 3D image generating device.
The method of claim 1,

The three-dimensional image generating device further comprises a motor for rotating the diffraction plate,

And the control unit transmits the control command to the motor to control the operation of the diffraction plate.
The method of claim 14,

And the control command is a signal for controlling the rotation speed, the rotation direction and the rotation angle of the motor.
The method of claim 1,

The diffraction plate is BK7 (borosilicate crown glass), fused silica (Fused Silica), barium fluoride (Barium fluoride), carbon (Carbon), diamond, fused germania (FUSED GERMANIA), potassium bromide (Potassium bromide), sodium chloride ( Sodium chloride, Zinc Selenide, Germanium, Aluminum arsenide, Calcium fluoride, Magnesium fluoride, SF11, SF10, SF5, Sapphire , Zinc sulfide, AMTIR-3, crystalline silicon, characterized in that it comprises one or more of the material (Crystalline silicon), three-dimensional image generating device.
The method of claim 1,

The photographing apparatus includes a lens system consisting of a plurality of lenses,

And the diffractive plate is positioned within the lens system.
In the three-dimensional image generating device,

A diffraction plate which alternately rotates in a first direction and a second direction;

The first image is acquired by the imaging device when the diffraction plate is positioned at a first position corresponding to the first direction, and when the diffraction plate is positioned at a second position corresponding to the second direction A controller configured to acquire a second image by the photographing apparatus; And

An image output unit for generating a three-dimensional image based on the first image and the second image,

The rotary shaft of the motor is mounted to the lower end of the diffraction plate,

The control unit controls the motor using a control command,

And the control unit generates and outputs the control command for causing the motor to alternately rotate in the first direction and the second direction, and output the generated control command to the motor.
In the method for generating a three-dimensional image,

Controlling the diffraction plate and the imaging device such that a first image is obtained by the imaging device when the diffraction plate is positioned at a first position corresponding to the first direction;

Controlling the diffraction plate and the imaging device such that a second image is obtained by the imaging device when the diffraction plate is positioned at a second position corresponding to the second direction;

Generating a first three-dimensional image of the object based on the first image and the second image received from the photographing apparatus;

Outputting the first three-dimensional image to a display;

Generating a control command for changing an operation of the diffraction plate based on an input received from a user device; And

Generating a second three-dimensional image of the object corresponding to the altered operation of the diffraction plate.