Image acquisition module, virtual reality device and control method and device thereof

Abstract

The application discloses an image acquisition module, a virtual reality device and a control method and device thereof, and belongs to the technical field of image acquisition. The image acquisition module comprises: a first optical filter, the first optical filter can pass light rays of a first wave band and a second wave band, the first wave band and the second wave band are different; a second optical filter, the second optical filter is arranged opposite to the first optical filter, the second optical filter can adjust a passing rate of light rays of a target wave band, the target wave band comprises at least part of the first wave band; a photosensitive element, the photosensitive element is used for collecting optical signals through the first optical filter and the second optical filter; and a controller, the controller is connected with the second optical filter and the photosensitive element, and the controller is used for adjusting the passing rate of the light rays of the target wave band of the second optical filter according to a first light intensity value of the optical signals of the first wave band.

Description

Technical Field

[0001] This application belongs to the field of image acquisition technology, specifically relating to an image acquisition module, a virtual reality device and its control method and apparatus. Background Technology

[0002] VR glasses are head-mounted VR devices equipped with multiple cameras. During use, VR glasses need to collect ambient visible light signals and detect infrared signals emitted by the VR controllers.

[0003] In related technologies, in order to reduce the overall control and cost of VR glasses, a single camera is used to simultaneously collect ambient visible light and infrared signals. When the intensity of visible light is strong, it seriously affects the camera's detection and recognition rate of the controller's infrared signal, resulting in inaccurate controller position detection and loss of controller position. Summary of the Invention

[0004] The purpose of this application is to provide an image acquisition module, a virtual reality device, and a control method and apparatus thereof, which improves the accuracy of controller recognition by the camera of VR glasses equipped with the image acquisition module in strong light environments.

[0005] In a first aspect, embodiments of this application provide an image acquisition module, comprising: a first filter capable of transmitting light in a first wavelength band and a second wavelength band, the first wavelength band and the second wavelength band being different; a second filter disposed opposite to the first filter, the second filter capable of adjusting the transmittance of light in a target wavelength band, the target wavelength band including at least a portion of the first wavelength band; a photosensitive element for acquiring light signals through the first filter and the second filter; and a controller connected to the second filter and the photosensitive element, the controller being used to adjust the transmittance of the second filter for light in the target wavelength band according to a first light intensity value of the acquired light signal in the first wavelength band.

[0006] Secondly, embodiments of this application provide a virtual reality device, including: the image acquisition module of the first aspect.

[0007] Thirdly, embodiments of this application provide a control method for a virtual reality device, used in the virtual reality device of the second aspect, comprising: acquiring a first light intensity value of a light signal of a first band collected through a first filter; and adjusting the transmittance of a second filter for light of a target band based on the first light intensity value, wherein the target band includes at least a portion of the first band.

[0008] Fourthly, embodiments of this application provide a control device for a virtual reality device, used in the virtual reality device of the second aspect, comprising: an acquisition module for acquiring a first light intensity value of a light signal of a first wavelength band collected by a first filter; and an adjustment module for adjusting the transmittance of a second filter for light of a target wavelength band according to the first light intensity value, wherein the target wavelength band includes at least a portion of the first wavelength band.

[0009] Fifthly, embodiments of this application provide an electronic device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the third aspect.

[0010] In a sixth aspect, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method as described in the third aspect.

[0011] In a seventh aspect, embodiments of this application provide a chip including a processor and a communication interface coupled to the processor, the processor being used to run programs or instructions to implement the steps of the method as described in the third aspect.

[0012] Eighthly, embodiments of this application provide a computer program product stored in a storage medium, which is executed by at least one processor to implement the method as described in the third aspect.

[0013] This application embodiment employs a differentiated dual-sided filter design, combined with software control to adjust the transmittance of the second filter, thereby enabling the detection of visible light intensity. Based on the detection results, the transmittance of the second filter for the visible light band is dynamically changed to reduce the visible light intensity reaching the photosensitive element, thus avoiding the impact on the accuracy of infrared recognition signal detection and improving the accuracy of controller recognition in strong light environments for VR glasses equipped with this image acquisition module. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of the image acquisition module provided in an embodiment of this application is shown;

[0015] Figure 2 A schematic diagram of the structure of the first filter provided in an embodiment of this application is shown;

[0016] Figure 3 This paper shows a light transmittance curve of the first filter provided in an embodiment of this application;

[0017] Figure 4 This paper shows a light transmittance curve of the second filter provided in an embodiment of this application;

[0018] Figure 5 A schematic diagram of the structure of the virtual reality device provided in an embodiment of this application is shown;

[0019] Figure 6 A flowchart illustrating the control method for a virtual reality device provided in an embodiment of this application is shown.

[0020] Figure 7 A structural block diagram of the control device for a virtual reality device provided in an embodiment of this application is shown;

[0021] Figure 8 A structural block diagram of the electronic device provided in an embodiment of this application is shown;

[0022] Figure 9 A schematic diagram of the hardware structure of an electronic device according to an embodiment of this application is shown.

[0023] in, Figures 1 to 5 The correspondence between the reference numerals and the component names is as follows:

[0024] 100 Image acquisition module, 110 First filter, 112 First filter area, 114 Second filter area, 120 Second filter, 130 Photosensitive element, 140 Controller, 150 First lens, 160 Circuit board, 170 Reinforcing component, 180 Power supply device, 500 Virtual reality device. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0026] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0027] The following is in conjunction with the appendix Figures 1 to 9The image acquisition module, virtual reality device, virtual reality device control method, and virtual reality device control device provided in this application will be described in detail through specific embodiments and application scenarios.

[0028] In some embodiments of this application, an image acquisition module is provided. Figure 1 A schematic diagram of the structure of the image acquisition module provided in an embodiment of this application is shown. Figure 1 As shown, the image acquisition module 100 includes: a first filter 110, a second filter 120, a photosensitive element 130, and a controller 140.

[0029] The first filter 110 can pass light in the first band and the second band, which are different;

[0030] It should be noted that the first filter 110 allows light of different wavelengths, namely the first band and the second band, to pass through it. The intersection of the first band and the second band is an empty set. The first band can be selected as a visible light band, and the second band can be selected as an infrared band, for example: the first band is 350nm to 750nm, and the second band is 800nm ​​to 850nm.

[0031] The second filter 120 is disposed opposite to the first filter 110. The second filter 120 can adjust the transmittance of light in the target wavelength band, which includes at least a portion of the first wavelength band.

[0032] In this embodiment, the second filter 120 may be an electrically controlled color-changing filter. The second filter 120 can be controlled to change color to alter the transmittance of light in the target wavelength band. The second filter 120 can also transmit light in a third wavelength band, which includes the first and second wavelength bands. That is, light in the first and second wavelength bands can pass through the first filter 110 and the second filter 120. Since the target wavelength band is at least a portion of the first wavelength band, the second filter 120 can also alter the transmittance of light in at least a portion of the first wavelength band.

[0033] The photosensitive element 130 is used to collect light signals through the first filter 110 and the second filter 120;

[0034] It should be noted that the second filter 120 is located between the first filter 110 and the photosensitive element 130, and the light signal collected by the photosensitive element 130 is the intensity signal of the light that has passed through the first filter 110 and the second filter 120 in sequence.

[0035] The controller 140 is connected to the second filter 120 and the photosensitive element 130. The controller 140 is used to adjust the transmittance of the second filter 120 for the target wavelength band of light according to the first light intensity value of the acquired light signal of the first wavelength band.

[0036] The controller 140 can be a camera image sensor (CIS, CMOS Image Sensor).

[0037] In this embodiment, the image acquisition module 100 includes a first filter 110 capable of filtering different first and second wavelength bands, and a second filter 120 with adjustable transmittance for at least a portion of the first wavelength band light. The controller 140 continuously detects the first light intensity value of the first wavelength band light and, based on the first light intensity value, controls the second filter 120 to adjust the transmittance of the target wavelength band light, ensuring that the photosensitive element 130 can accurately detect and acquire both the first and second wavelength band light.

[0038] The image acquisition module 100 is used in virtual reality devices, specifically in the camera within virtual reality (VR) glasses. The VR glasses camera needs to acquire visible light for two applications: environmental see-through detection and 6 degrees of freedom (6DoF) detection. Furthermore, the camera needs to acquire infrared signals emitted by the controller to enable precise positional capture of the controller. Therefore, the first band of the first filter 110 of the image acquisition module 100 is set to the visible light band, and the second band is set to the infrared signal band. The third band of the second filter 120 includes the first and second bands of the first filter 110. During operation, the image acquisition module 100 continuously acquires the light signals of the first and second bands.

[0039] It should be noted that excessive visible light intensity can affect the accuracy of the photosensitive element 130 in collecting infrared signals, causing the VR glasses to be unable to accurately detect the position of the controller.

[0040] It should be noted that when the first band is the visible light band, the second filter 120 adjusts the transmittance of light in at least a portion of the first band, thereby adjusting the light intensity value of the visible light received by the photosensitive element 130.

[0041] In this embodiment, during the operation of the image acquisition module 100, the first light intensity value (visible light intensity value) of the acquired first band light signal is continuously acquired. When the first light intensity value is detected to be large, the second filter 120 is controlled to change color to adjust the transmittance of the first band light, thereby reducing the light intensity of the visible light acquired by the photosensitive element 130. This avoids a decrease in the accuracy of the photosensitive element 130 in detecting infrared signals, thereby improving the accuracy of the camera in the VR glasses in recognizing the infrared signal emitted by the controller in a strong light environment.

[0042] Figure 2 A schematic diagram of the structure of the first filter provided in an embodiment of this application is shown, as follows: Figure 2 As shown, in some embodiments of this application, the first filter 110 includes a first filtering region 112 and a second filtering region 114. The first filtering region 112 is capable of transmitting light of the first wavelength band; the second filtering region 114 is capable of transmitting light of the second wavelength band.

[0043] In this embodiment, the first filtering region 112 is a filtering region for light of the first wavelength band, and the second filtering region 114 is a filtering region for light of the second wavelength band. By providing the first filtering region 112 and the second filtering region 114, which can filter light of the first and second wavelength bands respectively, in the first filter 110, it can be ensured that the first filter 110 can allow light of different first and second wavelength bands to pass through.

[0044] Figure 3 The light transmittance curve of the first filter provided in the embodiment of this application is shown, as follows. Figure 3 As shown, the first filter 110 allows light of both the first and second wavelength bands to pass through completely. Specifically, the first filtering region 112 of the first filter 110 only allows light of the visible light band to pass through, while the second filtering region 114 is a dual-channel design for both visible and infrared light, allowing both visible and infrared light to pass through. Furthermore, by differentiating the light transmittance curves of the first and second filtering regions 112, visible light is ensured to pass only through the first filtering region 112, while visible light cannot pass through the second filtering region 114, thus guaranteeing that the first filter 110 allows both visible and infrared light to pass through.

[0045] In some possible implementations, a plurality of first filtering regions 112 are arranged in an array on the first filter 110.

[0046] In this embodiment, by providing a first filtering region 112 capable of filtering light of the first wavelength band and a second filtering region 114 capable of filtering light of the second wavelength band on the first filter 110, the first filter 110 achieves the effect of filtering light of different wavelength bands. When this image acquisition module 100 is applied to VR glasses, the first wavelength band can be set to the visible light band and the second wavelength band can be set to the infrared signal band, ensuring that the VR glasses can acquire both ambient light and infrared signals emitted by the controller.

[0047] like Figure 2 As shown, in some embodiments of this application, there are multiple first filter regions 112, which are distributed at intervals in the first filter 110, and the second filter region 114 is located between the multiple first filter regions 112.

[0048] In this embodiment, there are multiple first filtering regions 112, which are spaced apart from each other in the first filter 110. Second filtering regions 114 are distributed among the multiple first filtering regions 112.

[0049] In some possible implementations, the plurality of first filtering regions 112 are multiple individually configured filtering structures, and the plurality of first filtering regions 112 are spaced apart. The second filtering region 114 is a single integral filtering structure, and the second filtering region 114 is located between the plurality of first filtering regions 112. For example, the first filtering region includes a plurality of first sub-filters, the second filtering region includes a single second sub-filter, the second sub-filter has a plurality of mounting positions, the plurality of first sub-filters are respectively located in the plurality of mounting positions, and the plurality of first sub-filters and the second sub-filter are spliced ​​together to form a first filter.

[0050] In some other possible implementations, the plurality of first filtering regions 112 are multiple individually configured filtering structures, and the plurality of first filtering regions 112 are spaced apart. The plurality of second filtering regions 114 are also multiple individually configured filtering structures, and the plurality of second filtering regions 114 are located between the plurality of first filtering regions 112. For example, the first filtering region includes a plurality of first sub-filters, the second filtering region includes a plurality of second sub-filters, the plurality of second sub-filters and the plurality of first sub-filters are spliced ​​together to form a first filter, and the first sub-filters are spaced apart.

[0051] In this embodiment, by setting the first filtering regions to be spaced apart within the first filter, and the second filtering regions located between the multiple first filtering regions, the first filter enables the first wavelength light and the second wavelength light to pass through uniformly, ensuring the first filter's effectiveness in transmitting the first and second wavelength light. In some embodiments of this application, the image acquisition module 100 further includes a first lens 150, a circuit board 160, and a reinforcing member 170. The first lens 150 is disposed opposite to the first filter 110, the first filter 110 and the second filter 120 are located between the first lens 150 and the photosensitive element 130, the controller 140 is disposed on one side of the circuit board 160, and the reinforcing member 170 is disposed on the other side of the circuit board 160.

[0052] In this embodiment of the application, a first lens 150 is also provided in the image acquisition module 100. After the light passes through the first lens 150, it is filtered by the first filter 110 and the second filter 120 and then acquired by the photosensitive element 130.

[0053] The first lens 150 includes one glass lens and five plastic lenses.

[0054] The circuit board 160 can be a flexible circuit board. The photosensitive element 130 is connected to the controller 140. The controller 140 can be a photosensitive chip, which is disposed on one side of the flexible circuit board. The flexible circuit board is provided with gold wires for connection to external electrical appliances. The reinforcing member 170 can be a reinforcing steel sheet, which is disposed on the other side of the flexible circuit board to improve the overall strength of the image acquisition module 100.

[0055] In this embodiment, by setting a first lens 150 in the image acquisition module 100, light can be refracted and focused. A controller 140 is also set on the circuit board 160 so that the light signal collected by the photosensitive element 130 can be transmitted to external electrical appliances. Furthermore, a reinforcing member 170 is set on the side of the circuit board 160 where the photosensitive element 130 is not installed, thereby improving the overall strength of the image acquisition module 100.

[0056] In some embodiments of this application, the controller 140 is further configured to: adjust the transmittance of the second filter 120 for light in the target wavelength band to a first transmittance when the first light intensity value is less than or equal to the light intensity threshold; and adjust the transmittance of the second filter 120 for light in the target wavelength band to a second transmittance when the first light intensity value is greater than the light intensity threshold; wherein the second transmittance is less than the first transmittance.

[0057] In this embodiment, by comparing the first light intensity value of the first band light signal with a light intensity threshold, and adjusting the transmittance of the second filter 120 for the target band light based on the comparison result, the light intensity of the first band light reaching the photosensitive element 130 is reduced, thereby reducing the impact of the first band light on the photosensitive element 130's detection of the second band light.

[0058] When the first light intensity value of the first wavelength band is detected to be greater than the light intensity threshold, it is determined that the light intensity of the first wavelength band is too high and will affect the photosensitive element 130's acquisition of the second wavelength band light. Therefore, the transmittance of the second filter 120 for the target wavelength band light is adjusted to a lower second transmittance, thus reducing the intensity value of the target wavelength band light reaching the photosensitive element 130 and avoiding the problem of low accuracy in detecting the second wavelength band light caused by excessive first wavelength band light intensity. When the first light intensity value is detected to be less than or equal to the light intensity threshold, it is determined that the light intensity of the first wavelength band is insufficient to affect the photosensitive element 130's acquisition of the second wavelength band light. Therefore, the transmittance of the second filter 120 for the target wavelength band light is adjusted to a normal first transmittance.

[0059] It should be noted that the second filter 120 can transmit light in a third wavelength band, which includes the first and second wavelength bands, and the target wavelength band includes at least a portion of the first wavelength band. When the transmittance of the target wavelength band is the first transmittance, the transmittance of the third wavelength band is also the first transmittance, meaning the second filter 120 allows the third wavelength band to pass through at the same transmittance. When the transmittance of the target wavelength band is the second transmittance, the transmittance of the remaining wavelength bands in the third wavelength band is the third transmittance, and the third transmittance is greater than the second transmittance. In other words, the second filter 120 allows the transmittance of the target wavelength band to be lower than the transmittance of the remaining wavelength bands, thereby reducing the influence of the target wavelength band light on the photosensitive element 130's detection of light in other wavelength bands.

[0060] Figure 4 The light transmittance curve of the second filter provided in the embodiment of this application is shown, as follows. Figure 4 As shown, in the first state, the second filter 120 has the same transmittance for light in the first and second wavelength bands. In the second state, the second filter 120 has a lower transmittance for light in the 350nm to 600nm range in the first wavelength band than for light in the second wavelength band.

[0061] This application embodiment employs a differentiated dual-sided filter design, combined with software control to adjust the transmittance of the second filter 120, thereby achieving visible light intensity detection. Based on the detection results, the transmittance of the second filter 120 for the visible light band is dynamically changed to reduce the visible light intensity reaching the photosensitive element 130, avoiding the impact on the accuracy of infrared recognition signal detection, and improving the accuracy of controller recognition by the camera of the VR glasses equipped with this image acquisition module 100 in strong light environments.

[0062] In some embodiments of this application, the first band is the visible light band, and the light of the first band can pass through the first filtering area; the second band includes the visible light band and the infrared light band, and the light of the second band can pass through the second filtering area; the second filter 120 can adjust the transmittance of visible light passing through the second filter; according to the intensity value of the visible light passing through the first filtering area, the controller 140 adjusts the transmittance of visible light by the second filter 120.

[0063] In this embodiment, the first and second bands are defined. The first band is the visible light band, and the second band includes both the visible light band and the infrared light band. That is, the first filter 110 can transmit both visible and infrared light, and the second filter 120 can adjust the transmittance of visible light.

[0064] The controller can adjust the transmittance of the second filter 120 for visible light based on the intensity value of visible light passing through the first filtering region 112 in the first filter 110. Specifically, if the intensity value of visible light passing through the first filtering region 112 is detected to be high, it is determined that visible light is affecting the reception of infrared light signals, and the controller controls the second filter 120 to reduce the transmittance of visible light, that is, controls the transmittance of the second filter 120 for visible light to be a second transmittance, thereby reducing the impact of visible light on the reception of infrared light signals. If the intensity value of visible light passing through the first filtering region 112 is detected to be low, it is determined that visible light will not affect the reception of infrared light signals, and the controller controls the second filter 120 to maintain a high transmittance of visible light, that is, controls the transmittance of the second filter 120 for visible light to be a first transmittance, where the second transmittance is less than the first transmittance.

[0065] In this embodiment, the controller can adjust the transmittance of the second filter 120 to visible light according to the intensity value of visible light passing through the first filter area 112, thereby reducing the impact of visible light on the detection accuracy of infrared recognition signals when the visible light intensity is high.

[0066] In some embodiments of this application, the image acquisition module 100 further includes: a power supply device 180 connected to the second filter 120, the power supply device 180 being used to supply power to the second filter 120; wherein, the controller 140 is able to adjust the color of the second filter 120 by controlling the power-on state of the power supply device 180, so as to adjust the transmittance of the second filter 120 for light of the target wavelength band.

[0067] In this embodiment, the image acquisition module 100 is further provided with a power supply device 180, and the second filter 120 can be an electronically controlled color-changing filter. The power supply device 180 is used to supply power to the second filter 120. The second filter 120 will display different colors when it is powered on and when it is not powered on, that is, the second filter 120 adjusts the transmittance of light in the target wavelength band by changing its color.

[0068] Specifically, the second filter 120 is connected to the power supply device 180, and the controller 140 can control whether the power supply device 180 supplies power to the second filter 120. When a high first intensity value of the light signal in the first band is detected, the controller controls the power supply device 180 to supply power to the second filter 120, causing the second filter 120 to change its color to adjust the transmittance of light in the target band, i.e., reducing the transmittance of visible light by the second filter 120. When a low first intensity value of the light signal in the first band is detected, the controller controls the power supply device 180 to stop supplying power to the second filter 120, so that the second filter 120 maintains its original color, i.e., maintains the transmittance of light in the target band.

[0069] In this embodiment, by setting a power supply device 180 in the image acquisition module 100 and controlling the power supply device 180 to control the power-on state of the electronically controlled color-changing second filter 120 through the controller 140, the transmittance of the second filter 120 for the target wavelength band light is conveniently adjusted.

[0070] This application provides a virtual reality device. Figure 5 A schematic diagram of the structure of the virtual reality device provided in an embodiment of this application is shown, such as... Figure 5 As shown, the virtual reality device 500 includes the image acquisition module 100 in any of the above embodiments, and thus has all the beneficial effects of the image acquisition module 100 in any of the above embodiments.

[0071] The virtual reality device includes multiple cameras, each with a corresponding image acquisition module 100. The virtual reality device can be selected as VR glasses.

[0072] In some embodiments of this application, a control method for a virtual reality device is provided, which is applied to the virtual reality device in any of the above embodiments. Figure 6 A flowchart illustrating the control method for a virtual reality device provided in an embodiment of this application is shown, as follows: Figure 6 As shown, the control methods for virtual reality devices include:

[0073] Step 602: Obtain the first light intensity value of the light signal of the first band acquired through the first filter;

[0074] Step 604: Adjust the transmittance of the second filter for light in the target wavelength band according to the first light intensity value. The target wavelength band includes at least a portion of the first wavelength band.

[0075] In this embodiment of the application, during the operation of the virtual reality device, the image acquisition module can continuously acquire the light signal of the first band and the light signal of the second band, obtain the first light intensity value of the light signal of the first band, and control the second filter to adjust the transmittance of the light of the target band according to the first light intensity value, so as to ensure that the photosensitive element can accurately detect and acquire the light of the first band and the second band.

[0076] The first filter allows light of different wavelengths, namely a first band and a second band, to pass through. The intersection of the first and second bands is an empty set. The first band can be selected from the visible light spectrum, and the second band can be selected from the infrared spectrum; for example, the first band is from 350nm to 750nm, and the second band is from 800nm ​​to 850nm. The target band includes at least a portion of the first band; therefore, by adjusting the transmittance of the target band, the transmittance of the first band can be adjusted.

[0077] The image acquisition module is used in virtual reality devices, specifically in the camera within VR glasses. The VR glasses camera needs to acquire visible light for two applications: environmental see-through detection and 6 degrees of freedom (6DoF) detection. Furthermore, the camera needs to acquire infrared signals emitted by the controller to enable precise positional tracking. Therefore, the first band of the first filter in the image acquisition module is set to the visible light band, the second band to the infrared signal band, and the third band of the second filter includes both the first and second bands of the first filter. During operation, the image acquisition module continuously acquires light signals from both the first and second bands.

[0078] It should be noted that excessive visible light intensity can affect the accuracy of the photosensitive element in collecting infrared signals, causing VR glasses to be unable to accurately detect the position of the controller. When the first wavelength is the visible light band, the second filter adjusts the transmittance of light in at least a portion of the first wavelength band, thereby adjusting the intensity value of the visible light received by the photosensitive element.

[0079] In this embodiment, during the operation of the virtual reality device, the first light intensity value (visible light intensity value) of the first band light signal is continuously acquired. When the first light intensity value is detected to be large, the second filter is controlled to adjust the transmittance of the first band light, so that the light intensity of the visible light acquired by the photosensitive element is reduced, thereby avoiding a decrease in the accuracy of the photosensitive element in detecting infrared signals, and thus improving the accuracy of the camera in the VR glasses in recognizing the infrared signals emitted by the controller in a strong light environment.

[0080] In some embodiments of this application, adjusting the transmittance of the second filter for light in the target wavelength band according to a first light intensity value includes: adjusting the transmittance of the second filter for light in the target wavelength band to a first transmittance when the first light intensity value is less than or equal to a light intensity threshold; adjusting the transmittance of the second filter for light in the target wavelength band to a second transmittance when the first light intensity value is greater than the light intensity threshold; wherein the second transmittance is less than the first transmittance.

[0081] In this embodiment, by comparing the first light intensity value of the light signal in the first band with the light intensity threshold, and adjusting the transmittance of the second filter for the target band of light based on the comparison result, the light intensity of the first band reaching the photosensitive element is reduced, thereby reducing the impact of the first band of light on the photosensitive element's detection of the second band of light.

[0082] If the first light intensity value of the first wavelength band is detected to be greater than the light intensity threshold, it is determined that the light intensity of the first wavelength band is too high and will affect the photosensitive element's acquisition of the second wavelength band. Therefore, the transmittance of the second filter for the target wavelength band is adjusted to a lower second transmittance, thus reducing the intensity of the target wavelength band light reaching the photosensitive element and avoiding the problem of low accuracy in detecting the second wavelength band light caused by excessive light intensity in the first wavelength band. If the first light intensity value is detected to be less than or equal to the light intensity threshold, it is determined that the light intensity of the first wavelength band is insufficient to affect the photosensitive element's acquisition of the second wavelength band light. Therefore, the transmittance of the second filter for the target wavelength band light is adjusted to the normal first transmittance.

[0083] It should be noted that the second filter allows light in the third wavelength band to pass through. The third wavelength band includes the first and second wavelength bands, and the target wavelength band includes at least a portion of the first wavelength band. When the transmittance of the target wavelength band is the first transmittance rate, the transmittance of the third wavelength band is also the first transmittance rate; that is, the second filter allows light in the third wavelength band to pass through at the same transmittance rate. When the transmittance of the target wavelength band is the second transmittance rate, the transmittance of the remaining wavelength bands in the third wavelength band is the third transmittance rate, and the third transmittance rate is greater than the second transmittance rate. In other words, the second filter allows the transmittance of the target wavelength band to be lower than the transmittance of the remaining wavelength bands, thereby reducing the influence of the target wavelength band light on the photosensitive element's detection of light in other wavelength bands.

[0084] The first band of the first filter is the visible light transmission band, and the second band of the first filter is the infrared signal transmission band. The first band can be from 350nm to 750nm, and the target band can be from 350nm to 600nm.

[0085] This application embodiment employs a differentiated dual-sided filter design, combined with software control to adjust the transmittance of the second filter, thereby achieving the detection of visible light intensity. Based on the detection results, the transmittance of the second filter for the visible light band is dynamically changed to reduce the visible light intensity reaching the photosensitive element, thus avoiding the impact on the accuracy of infrared recognition signal detection and improving the accuracy of controller recognition by the camera of the virtual reality device in strong light environments.

[0086] The virtual reality device control method provided in this application can be executed by a virtual reality device control unit or a control module within that control unit for performing a shooting control method. This application uses the shooting control method performed by the virtual reality device control unit as an example to illustrate the shooting control device provided in this application.

[0087] In some embodiments of this application, a control device for a virtual reality device is provided, which is applied to the virtual reality device in any of the above embodiments. Figure 7 The structural block diagram of the control device for the virtual reality device provided in the embodiments of this application is shown below. Figure 7 As shown, the control device 700 for the virtual reality device includes:

[0088] The acquisition module 702 is used to acquire the first light intensity value of the light signal of the first band acquired through the first filter;

[0089] The adjustment module 704 is used to adjust the transmittance of the second filter for light in the target wavelength band according to the first light intensity value, the target wavelength band including at least a portion of the first wavelength band.

[0090] In this embodiment, during the operation of the virtual reality device, the first light intensity value (visible light intensity value) of the first band light signal is continuously acquired. When the first light intensity value is detected to be large, the second filter is controlled to adjust the transmittance of the first band light, so that the light intensity of the visible light acquired by the photosensitive element is reduced, thereby avoiding a decrease in the accuracy of the photosensitive element in detecting infrared signals, and thus improving the accuracy of the camera in the VR glasses in recognizing the infrared signals emitted by the controller in a strong light environment.

[0091] In some embodiments of this application, the adjustment module 704 is further configured to adjust the transmittance of the second filter for light in the target wavelength band to a first transmittance when the first light intensity value is less than or equal to the light intensity threshold.

[0092] The adjustment module 704 is also used to adjust the transmittance of the second filter for light in the target wavelength band to a second transmittance when the first light intensity value is greater than the light intensity threshold.

[0093] The second pass rate is lower than the first pass rate.

[0094] This application embodiment employs a differentiated dual-sided filter design, combined with software control to adjust the transmittance of the second filter, thereby achieving the detection of visible light intensity. Based on the detection results, the transmittance of the second filter for the visible light band is dynamically changed to reduce the visible light intensity reaching the photosensitive element, thus avoiding the impact on the accuracy of infrared recognition signal detection and improving the accuracy of controller recognition by the camera of the virtual reality device in strong light environments.

[0095] The control device for the virtual reality device in this application embodiment can be an electronic device or a component within an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. Exemplarily, the electronic device can be a mobile phone, tablet computer, laptop computer, PDA, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television set (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the scope of the device.

[0096] The control device for the virtual reality device in this application embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this application embodiment does not specifically limit the specific operating system used.

[0097] The control device for the virtual reality device provided in this application embodiment can implement the various processes implemented in the above method embodiments. To avoid repetition, it will not be described again here.

[0098] Optionally, embodiments of this application also provide an electronic device, including a control device for a virtual reality device as described in any of the above embodiments, and thus having all the beneficial effects of the control device for a virtual reality device in any of the embodiments, which will not be elaborated further here.

[0099] Optionally, embodiments of this application also provide an electronic device. Figure 8 A second structural block diagram of an electronic device according to an embodiment of this application is shown, such as... Figure 8 As shown, the electronic device 800 includes a processor 802, a memory 804, and a program or instructions stored in the memory 804 and executable on the processor 802. When the program or instructions are executed by the processor 802, they implement the various processes of the above-described virtual reality device control method embodiment and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0100] It should be noted that the electronic devices in the embodiments of this application include the aforementioned mobile electronic devices and non-mobile electronic devices.

[0101] Figure 9 A schematic diagram of the hardware structure of an electronic device to implement an embodiment of this application.

[0102] The electronic device 900 includes, but is not limited to, components such as: radio frequency unit 901, network module 902, audio output unit 903, input unit 904, sensor 905, display unit 906, user input unit 907, interface unit 908, memory 909, and processor 910.

[0103] Those skilled in the art will understand that the electronic device 900 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 910 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 9 The electronic device structure shown does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0104] The processor 910 is used to acquire the first light intensity value of the light signal of the first band acquired through the first filter;

[0105] The processor 910 is used to adjust the transmittance of the second filter for light in a target wavelength band, which includes at least a portion of the first wavelength band, based on a first light intensity value.

[0106] In this embodiment, during the operation of the virtual reality device, the first light intensity value (visible light intensity value) of the first band light signal is continuously acquired. When the first light intensity value is detected to be large, the second filter is controlled to adjust the transmittance of the first band light, so that the light intensity of the visible light acquired by the photosensitive element is reduced, thereby avoiding a decrease in the accuracy of the photosensitive element in detecting infrared signals, and thus improving the accuracy of the camera in the VR glasses in recognizing the infrared signals emitted by the controller in a strong light environment.

[0107] Furthermore, the processor 910 is used to adjust the transmittance of the second filter for light in the target wavelength band to a first transmittance when the first light intensity value is less than or equal to the light intensity threshold.

[0108] The processor 910 is used to adjust the transmittance of the second filter for light in the target wavelength band to a second transmittance when the first light intensity value is greater than the light intensity threshold.

[0109] The second pass rate is lower than the first pass rate.

[0110] This application embodiment employs a differentiated dual-sided filter design, combined with software control to adjust the transmittance of the second filter, thereby achieving the detection of visible light intensity. Based on the detection results, the transmittance of the second filter for the visible light band is dynamically changed to reduce the visible light intensity reaching the photosensitive element, thus avoiding the impact on the accuracy of infrared recognition signal detection and improving the accuracy of controller recognition by the camera of the virtual reality device in strong light environments.

[0111] It should be understood that, in this embodiment, the input unit 904 may include a graphics processing unit (GPU) 9041 and a microphone 9042. The GPU 9041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 906 may include a display panel 9061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072. The touch panel 9071 is also called a touch screen. The touch panel 9071 may include a touch detection device and a touch controller. Other input devices 9072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0112] The memory 909 can be used to store software programs and various data. The memory 909 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 909 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 909 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0113] Processor 910 may include one or more processing units; optionally, processor 910 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 910.

[0114] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0115] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0116] This application also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described virtual reality device control method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0117] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0118] This application provides a computer program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the control method embodiment of the virtual reality device described above, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0119] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0120] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of this application.

[0121] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An image acquisition module, characterized in that, include: A first filter, which allows light to pass through a first wavelength band and a second wavelength band, wherein the first wavelength band and the second wavelength band are different; A second filter is disposed opposite to the first filter. The second filter can adjust the transmittance of light in a target wavelength band, which includes at least a portion of the first wavelength band. The second filter can also transmit light in a third wavelength band, which includes both the first and second wavelength bands. A photosensitive element is used to collect light signals through the first filter and the second filter, wherein the second filter is located between the first filter and the photosensitive element, and the light signal collected by the photosensitive element is the light intensity signal that passes through the first filter and the second filter in sequence; A controller, connected to the second filter and the photosensitive element, is used to adjust the transmittance of the second filter for the target wavelength band based on the first light intensity value of the light signal of the first wavelength band. The first filter includes a first filtering region and a second filtering region. The first filtering region only allows light in the visible light band to pass through, while the second filtering region is a dual-channel design for visible light and infrared light. By designing the light transmittance curves of the first filtering region and the second filtering region differently, visible light can only pass through the first filtering region, while visible light cannot pass through the second filtering region. Based on the intensity value of visible light passing through the first filtering area, the controller adjusts the transmittance of the second filter for visible light. The controller is also used for: When the first light intensity value is less than or equal to the light intensity threshold, the transmittance of the second filter for the light in the target wavelength band is adjusted to the first transmittance. When the first light intensity value is greater than the light intensity threshold, the transmittance of the second filter for the light in the target wavelength band is adjusted to a second transmittance. Wherein, the second pass rate is less than the first pass rate; When the transmittance of light in the target band is the second transmittance, the transmittance of light in the remaining bands of the third band, excluding the target band, is the third transmittance, and the third transmittance is greater than the second transmittance.

2. The image acquisition module according to claim 1, characterized in that, The first filtering area can transmit light of the first wavelength band; The second filtering area is able to allow light of the second wavelength band to pass through.

3. The image acquisition module according to claim 2, characterized in that, The number of first filter regions is multiple, and the multiple first filter regions are distributed at intervals in the first filter, and the second filter region is located between the multiple first filter regions.

4. The image acquisition module according to any one of claims 1 to 3, characterized in that, Also includes: A first lens is disposed opposite to the first filter, and the first filter and the second filter are located between the first lens and the photosensitive element; A circuit board, with the controller disposed on one side of the circuit board.

5. The image acquisition module according to any one of claims 1 to 3, characterized in that, The first band is the visible light band, and light from the first band can pass through the first filter area; The second band includes the visible light band and the infrared light band, and the light in the second band can pass through the second filter area; The second filter can adjust the transmittance of visible light passing through it.

6. The image acquisition module according to any one of claims 1 to 3, characterized in that, Also includes: A power supply device is connected to the second filter, and the power supply device is used to supply power to the second filter; The controller can adjust the color of the second filter by controlling the power-on state of the power supply device, thereby adjusting the transmittance of the second filter for light of the target wavelength band.

7. A virtual reality device, characterized in that, The image acquisition module includes any one of claims 1 to 6.

8. A control method for a virtual reality device, characterized in that, The control method, applied to the virtual reality device of claim 7, comprises: Acquire the first light intensity value of the first band of light signal acquired through the first filter; Based on the first light intensity value, the transmittance of the second filter for light in the target wavelength band is adjusted, wherein the target wavelength band includes at least a portion of the first wavelength band.

9. The control method for a virtual reality device according to claim 8, characterized in that, The step of adjusting the transmittance of the second filter for the target wavelength band based on the first light intensity value includes: When the first light intensity value is less than or equal to the light intensity threshold, the transmittance of the second filter for the light in the target wavelength band is adjusted to the first transmittance. When the first light intensity value is greater than the light intensity threshold, the transmittance of the second filter for the light in the target wavelength band is adjusted to a second transmittance. The second pass rate is less than the first pass rate.

10. A control device for a virtual reality device, characterized in that, The control device, applied to the virtual reality device of claim 7, comprises: The acquisition module is used to acquire the first light intensity value of the light signal of the first band acquired through the first filter; An adjustment module is used to adjust the transmittance of the second filter for light in the target wavelength band according to the first light intensity value, wherein the target wavelength band includes at least a portion of the first wavelength band.

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