Airflow-assisted flexible curtain 3D imaging method, device and system

Abstract

The invention relates to the technical field of stereo imaging, and provides an airflow-assisted flexible curtain 3D stereo imaging method, device and system comprising an airflow-assisted flexible curtain module, a projection module and a control module. The specific working mode is as follows: the airflow-assisted flexible curtain module sends a rotation position signal to the control module, and the control module controls the projection module to project an image corresponding to the curtain at the current rotation angle; within a short time of a rotation period, the projection module continuously switches and projects images corresponding to the curtains with different rotation angles, which is a complete refresh of 3D stereo imaging; by using the persistence of vision, through rapid rotation and projection of an image of a corresponding rotation angle, a 3D image can be viewed from any angle. The technical route is easy to implement, the 3D stereo imaging effect is good, and large-format 3D stereo imaging can be achieved through array arrangement.

Description

Technical Field

[0001] The present invention relates to the field of stereoscopic imaging technology, and in particular to an airflow-assisted flexible curtain 3D stereoscopic imaging method, device and system. Background Art

[0002] Traditional volumetric 3D scanning displays use rigid diffusers in their imaging screens. The resulting mechanical vibrations lead to insufficient stability and pose safety risks. Furthermore, they are expensive and energy-intensive, making them primarily used for demonstrations in professional fields, which greatly limits their widespread application. Summary of the Invention

[0003] In order to solve the problems of existing stereoscopic imaging technology, the present invention provides an airflow-assisted flexible curtain 3D stereoscopic imaging method, device and system.

[0004] An airflow-assisted flexible curtain 3D stereoscopic imaging method comprises an airflow-assisted flexible curtain module, a projection module and a control module.

[0005] The steps of the airflow-assisted flexible curtain 3D stereoscopic imaging method are as follows:

[0006] The flexible screen unfolds and rotates under the action of airflow; the airflow-assisted flexible screen module sends a rotation position signal to the control module to determine the rotation angle corresponding to the current screen, and the control module controls the projection module to project the image corresponding to the screen with the current rotation angle; the minimum rotation angle required for the screen to scan the entire reachable space is called the rotation cycle angle of the airflow-assisted flexible screen module, and the rotation time corresponding to the rotation cycle angle is called the rotation cycle; within the short time of a rotation cycle, the projection module continuously switches and projects the images corresponding to the screens with different rotation angles, which is a complete refresh of the 3D stereoscopic imaging; by utilizing the phenomenon of visual persistence, by quickly rotating and projecting the image of the corresponding rotation angle, it is possible to achieve 3D stereoscopic images when viewed from any angle.

[0007] An airflow-assisted flexible screen module includes: a flexible screen that can rotate 360° and serves as a three-dimensional imaging display screen, including but not limited to gauze, film, fabric, and projection film. The power source of rotation includes but is not limited to electric rotation (for example, rotation driven by a motor) and impeller rotation (for example, rotation driven by airflow pushing an impeller); an airflow generating component for providing airflow to unfold the flexible screen, including but not limited to fans, blowers, air pumps, air compressors and other airflow generating components; a position sensor for measuring the rotational position of the flexible screen, including but not limited to Hall sensors, magnetoresistive sensors, magnetic encoders, photoelectric encoders, and potentiometer sensors.

[0008] Preferably, the minimum rotation angle required for the airflow-assisted flexible curtain module to scan the entire accessible space is called the rotation cycle angle of the airflow-assisted flexible curtain module; the rotation time corresponding to the rotation cycle angle is called the rotation period; and the rotation period is not higher than the visual persistence period.

[0009] The projection module includes: an image processor for receiving and processing stereoscopic image data to obtain the desired projected image; a projection component, including but not limited to a dot matrix projector component (such as a VCSEL dot matrix projection component), a MEMS galvanometer projection component (such as a laser galvanometer projection component), and a DMD chip projection component (such as a DLP projection component).

[0010] Preferably, the projection module projects an image on the screen of the airflow-assisted flexible screen module, and the projected image corresponds to the rotation angle of the screen.

[0011] An airflow-assisted flexible curtain 3D stereoscopic imaging device comprises the above-mentioned airflow-assisted flexible curtain module, the above-mentioned projection module, and a control module; wherein the control module includes but is not limited to an MCU controller, an FPGA controller, and a microcomputer controller; the flexible curtain unfolds and rotates under the action of the airflow; the airflow-assisted flexible curtain module sends a rotation position signal to the control module to determine the rotation angle corresponding to the current curtain, and the control module controls the projection module to project the image corresponding to the curtain at the current rotation angle; within one rotation cycle of the airflow-assisted flexible curtain module, the projection module continuously switches and projects images corresponding to curtains at different rotation angles, which is a complete refresh of the 3D stereoscopic imaging; utilizing the phenomenon of visual persistence, by rapidly rotating and projecting images corresponding to the rotation angle, a 3D stereoscopic image can be achieved when viewed from any angle.

[0012] An airflow-assisted flexible curtain 3D stereoscopic imaging system comprises the above-mentioned airflow-assisted flexible curtain 3D stereoscopic imaging device and an interactive control platform; wherein the interactive control platform collects interactive signals and sends control instructions to the airflow-assisted flexible curtain 3D stereoscopic imaging device, and the airflow-assisted flexible curtain 3D stereoscopic imaging device adjusts the 3D stereoscopic image according to the control instructions, thereby realizing interactive display, including but not limited to translation, rotation, and scaling.

[0013] Preferably, the input devices for the interactive control platform to collect interactive signals include but are not limited to: keyboard, mouse, handle / joystick, touch screen, microphone, camera, inertial measurement unit (IMU), ultrasonic receiver, infrared receiver, and wireless communication receiver.

[0014] Optionally, the airflow-assisted flexible curtain 3D stereoscopic imaging system may further include a protective shell to protect against potential safety hazards caused by the rotation of the rigid rotating parts of the system.

[0015] The advantages of the present invention are: the present invention realizes 3D stereoscopic images when viewed from any angle, and can interact with 3D stereoscopic images; in practical applications, the present invention can be used in medical care, game entertainment, military sandbox, science and technology exhibitions and other fields, and has a promoting effect on production, life and social development; the present invention takes airflow-assisted flexible curtain rotation scanning as the core, and proposes an airflow-assisted flexible curtain 3D stereoscopic imaging method, device and system, which has a simple technical route to implement, good 3D stereoscopic imaging effect, and can also realize large-scale 3D stereoscopic imaging through array arrangement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a simplified schematic diagram of Embodiment 1 of the present invention.

[0017] Figure 2 This is a simplified schematic diagram of the second embodiment of the present invention.

[0018] Explanation of the reference numerals: 1-1-silk scarf, 1-2-long strip nozzle, 1-3-hollow shaft motor, 1-4-360° rotary joint, 1-5-air pipe, 1-6-air pump, 1-7-touch screen, 1-8-microcomputer controller, 1-9-image processor, 1-10-laser dot matrix projector, 1-11-Hall sensor (small black dot in the figure), 1-12-protective housing, 1-13-air flow direction (straight arrow in the figure), 1-14-motor rotation direction (curved arrow in the figure); 2-1-silk scarf, 2-2-elastic rod, 2-3-motor, 2-4-bladeless fan, 2-5-touch screen, 2-6-microcomputer controller, 2-7-image processor, 2-8-DLP projector, 2-9-air flow direction (straight arrow in the figure), 2-10-Hall sensor (small black dot in the figure), 2-11-motor rotation direction (curved arrow in the figure). DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The following is only an embodiment of the present invention and is not intended to limit the scope of protection of the claims of the present invention. At the same time, the following description should be understandable and implementable to relevant technical personnel in the relevant technical field. Therefore, other equivalent changes based on the content disclosed by the present invention, or all other embodiments obtained without creative work, should be included in the scope of the claims of the present invention. The present invention will be described in detail below with reference to the embodiments.

[0020] It should be noted that the terms "first," "second," and the like in the specification and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner can be interchanged or combined as appropriate to describe the embodiments of the present invention described herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or apparatuses.

[0021] A method, device and system for 3D stereoscopic imaging of a flexible curtain assisted by airflow, according to the embodiment 1 Figure 1 , including an airflow-assisted flexible curtain module (a scarf 1-1, a long strip nozzle 1-2, a hollow shaft motor 1-3, a 360° rotating joint 1-4, an air pipe 1-5, an air pump 1-6, a Hall sensor (a small black dot in the figure) 1-11), a projection module (an image processor 1-9, a laser dot matrix projector 1-10), a control module (a microcomputer controller 1-8), an interactive control platform (a touch screen 1-7), and a protective shell 1-12; wherein, the bottom edge of the scarf 1-1 is fixed on the long strip nozzle 1-2, and the hollow shaft motor 1-3 drives the long strip nozzle 1-2 to rotate in a counterclockwise direction (the direction of motor rotation (the curved arrow in the figure) 1-14), and the force exerted by the scarf 1-1 on the airflow (the direction of airflow (the straight arrow in the figure) 1-13) The airflow-assisted flexible screen module unfolds and rotates; the airflow-assisted flexible screen module sends a rotation position signal to the control module to determine the rotation angle corresponding to the current screen, and the control module controls the projection module to project the image corresponding to the screen with the current rotation angle; the minimum rotation angle required for the screen to scan all accessible spaces is called the rotation cycle angle of the airflow-assisted flexible screen module, and the rotation time corresponding to the rotation cycle angle is called the rotation cycle. Within the short time of a rotation cycle, the projection module continuously switches and projects images corresponding to screens with different rotation angles, which is a complete refresh of the 3D stereoscopic imaging; by utilizing the visual persistence phenomenon, by quickly rotating and projecting images of corresponding rotation angles, a 3D stereoscopic image can be achieved when viewed from any angle.

[0022] For ease of understanding, the refresh rate of the above embodiment is 30Hz for illustration: the minimum rotation angle required for the screen (i.e., scarf 1-1) of the airflow-assisted flexible screen module to scan the entire accessible space is 180°; since the refresh rate is 30Hz, it can be seen that the rotation period of the airflow-assisted flexible screen module is 1 / 30Hz, so the speed of the hollow shaft motor 1-3 is 30 / (360° / 180°)*60=900 (r / min). Therefore, when projecting an image, this 3D stereoscopic imaging embodiment uses a rotation of 180° of the scarf 1-1 as a complete refresh, and the speed of the hollow shaft motor 1-3 is 900 (r / min). It should be noted that the above-mentioned nozzle and screen are not limited to a straight long strip nozzle and a flat rectangular screen, and are only used as an illustration of this embodiment.

[0023] Preferably, the touch screen 1-7 can collect interactive signals and adjust the 3D stereoscopic image according to the interactive control instructions, including but not limited to translation, rotation, and scaling of the 3D stereoscopic image, thereby realizing interactive display.

[0024] Optionally, the airflow-assisted flexible curtain 3D stereoscopic imaging system may further include a protective shell 1-12 to protect against potential safety hazards caused by the rotation of the rotating nozzle.

[0025] A second embodiment of an airflow-assisted flexible curtain 3D stereoscopic imaging method, device and system, referring to Figure 2 , including an airflow-assisted flexible curtain module (a silk scarf 2-1, an elastic rod 2-2, a motor 2-3, a bladeless fan 2-4, a Hall sensor (a small black dot in the figure) 2-10), a projection module (an image processor 2-7, a DLP projector 2-8), a control module (a microcomputer controller 2-6) and an interactive control platform (a touch screen 2-5); wherein, the bottom edge of the silk scarf 2-1 is fixed on the elastic rod 2-2, and the motor 2-3 drives the elastic rod 2-2 to rotate in a counterclockwise direction (the direction of rotation of the motor (the curved arrow in the figure) 2-11), and the silk scarf 2-1 is unfolded and rotated under the action of the airflow (the direction of airflow (the straight arrow in the figure) 2-9); the airflow-assisted flexible curtain module generates A rotation position signal is sent to the control module to determine the current rotation angle corresponding to the screen. The control module controls the projection module to project the image corresponding to the screen at the current rotation angle. The minimum rotation angle required for the screen to scan the entire accessible space is called the rotation cycle angle of the airflow-assisted flexible screen module. The rotation time corresponding to the rotation cycle angle is called the rotation cycle. Within the short time of a rotation cycle, the projection module continuously switches and projects the images corresponding to the screens at different rotation angles. This is a complete refresh of the 3D stereoscopic imaging. By utilizing the phenomenon of visual persistence, by quickly rotating and projecting the image at the corresponding rotation angle, a 3D stereoscopic image can be viewed from any angle.

[0026] For ease of understanding, the above embodiment is described with a refresh rate of 25Hz: the minimum rotation angle required for the screen (i.e., scarf 2-1) of the airflow-assisted flexible screen module to scan the entire accessible space is 180°; from the refresh rate of 25Hz, it can be seen that the rotation period of the airflow-assisted flexible screen module is 1 / 25Hz, so the speed of motor 2-3 is 25 / (360° / 180°)*60=750 (r / min). Therefore, when projecting an image, this 3D stereoscopic imaging embodiment uses a rotation of 180° of scarf 2-1 as a complete refresh, and the speed of motor 2-3 is 750 (r / min). It should be noted that the above-mentioned elastic rod and screen are not limited to a straight elastic rod and a flat rectangular screen, and are only used as an illustration of this embodiment.

[0027] Preferably, the touch screen 2-5 can collect interactive signals and adjust the 3D stereoscopic image according to the interactive control instructions, including but not limited to translation, rotation, and scaling of the 3D stereoscopic image, thereby realizing interactive display.

[0028] Obviously, the above-mentioned bladeless fans 2-4 can also be replaced by hollow shaft fans or traditional bladed fans.

[0029] The advantages of the present invention are: the present invention realizes 3D stereoscopic images when viewed from any angle, and can interact with 3D stereoscopic images; in practical applications, the present invention can be used in medical care, game entertainment, military sandbox, science and technology exhibitions and other fields, and has a promoting effect on production, life and social development; the present invention takes airflow-assisted flexible curtain rotation scanning as the core, and proposes an airflow-assisted flexible curtain 3D stereoscopic imaging method, device and system, which has a simple technical route to implement, good 3D stereoscopic imaging effect, and can also realize large-scale 3D stereoscopic imaging through array arrangement.

Claims

1. An airflow-assisted flexible curtain 3D stereoscopic imaging method, characterized in that: include: Airflow-assisted flexible curtain module, projection module, and control module; The airflow-assisted flexible curtain 3D stereoscopic imaging method comprises the following steps: The flexible screen unfolds and rotates under the action of airflow; the airflow-assisted flexible screen module sends a rotation position signal to the control module to determine the rotation angle corresponding to the current screen, and the control module controls the projection module to project the image corresponding to the screen with the current rotation angle; the minimum rotation angle required for the screen to scan the entire reachable space is called the rotation cycle angle of the airflow-assisted flexible screen module, and the rotation time corresponding to the rotation cycle angle is called the rotation cycle; within the short time of a rotation cycle, the projection module continuously switches and projects the images corresponding to the screens with different rotation angles, which is a complete refresh of the 3D stereoscopic imaging; by utilizing the phenomenon of visual persistence, by quickly rotating and projecting the image of the corresponding rotation angle, it is possible to achieve 3D stereoscopic images when viewed from any angle.

2. Airflow-assisted flexible curtain module, characterized in that: include: Flexible screens, rotatable 360°, used as volumetric 3D imaging display screens, including but not limited to films and fabrics; An airflow generating component, used for providing airflow to unfold the flexible curtain, including but not limited to a fan and an air compressor; The position sensor is used to measure the rotational position of the flexible screen, including but not limited to a Hall sensor, a magnetic encoder, and a photoelectric encoder.

3. The airflow-assisted flexible curtain module according to claim 2, characterized in that: The minimum rotation angle required for the airflow-assisted flexible curtain module to scan the entire accessible space is called the rotation cycle angle of the airflow-assisted flexible curtain module; the rotation time corresponding to the rotation cycle angle is called the rotation period; and the rotation period is not longer than the visual persistence period.

4. Projection module, characterized in that include: An image processor, configured to receive and process stereoscopic image data to obtain a desired projection image; Projection components, including but not limited to dot matrix projector components and DMD chip projection components.

5. The projection module according to claim 4, characterized in that: The projection module projects an image on the screen of the airflow-assisted flexible screen module, and the projected image corresponds to a rotation angle of the screen.

6. An airflow-assisted flexible curtain 3D stereoscopic imaging device, characterized in that: include: The airflow-assisted flexible screen module according to claim 2, the projection module and the control module according to claim 4; wherein the control module includes but is not limited to a microcomputer controller; the flexible screen unfolds and rotates under the action of the airflow; the airflow-assisted flexible screen module sends a rotation position signal to the control module to determine the rotation angle corresponding to the current screen, and the control module controls the projection module to project the image corresponding to the screen with the current rotation angle; within one rotation cycle of the airflow-assisted flexible screen module, the projection module continuously switches and projects images corresponding to screens with different rotation angles, which is a complete refresh of 3D stereoscopic imaging; utilizing the phenomenon of visual persistence, by quickly rotating and projecting images corresponding to the rotation angle, a 3D stereoscopic image can be viewed from any angle.

7. Airflow-assisted flexible curtain 3D stereoscopic imaging system, characterized in that: include: The airflow-assisted flexible curtain 3D stereoscopic imaging device and interactive control platform as described in claim 6; wherein, the interactive control platform collects interactive signals and sends control instructions to the airflow-assisted flexible curtain 3D stereoscopic imaging device, and the airflow-assisted flexible curtain 3D stereoscopic imaging device adjusts the 3D stereoscopic image according to the control instructions, thereby realizing interactive display, including but not limited to translation, rotation, and scaling.

8. The airflow-assisted flexible curtain 3D stereoscopic imaging system according to claim 7, characterized in that: The input devices for the interactive control platform to collect interactive signals include but are not limited to: keyboard, mouse, handle / joystick, touch screen, microphone, and camera.

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