Holographic projection control method of projector

Abstract

The invention discloses a holographic projection control method for a projector, and relates to the technical field of monitoring control, and the method comprises the steps: obtaining an optical characteristic parameter corresponding to a light incident plate through a preset detection device; determining the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source according to the optical characteristic parameters corresponding to the light incident plate; responding to the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source, adjusting the light source output power corresponding to the projection light source according to the optimal projection light source intensity corresponding to the projection light source, and adjusting the projection direction corresponding to the projector according to the optimal projection angle corresponding to the projection light source; and monitoring the state information corresponding to the light incident plate in real time, and dynamically adjusting the projection parameters corresponding to the projector when the state information corresponding to the light incident plate is abnormal. The holographic projection method has the effect of improving the holographic projection efficiency.

Description

Technical Field

[0001] The present application relates to the field of monitoring and control technology, and in particular to a holographic projection control method of a projector. Background Art

[0002] Holographic projection technology is a technology that records and reproduces the three-dimensional image of an object through the principles of interference and diffraction. In recent years, it has been widely used in advertising, exhibitions, education, medical care and other fields. Compared with traditional two-dimensional projection technology, holographic projection can display three-dimensional images with a sense of depth, providing more realistic and three-dimensional visual effects. A typical holographic projection system consists of a light source, a projection medium, a projection surface and a control system, among which the selection of the light source and the characteristics of the projection medium (such as the light input plate) are crucial to the projection effect. The imaging effect of holographic projection depends not only on the intensity and stability of the light source, but also on the optical properties of the projection medium (such as transmittance, refractive index and surface flatness). As a key component for light to enter the projection system, the optical properties of the light input plate directly affect the propagation path of the light, energy loss and the final imaging quality.

[0003] In the related technology, the holographic projection control method of the existing projector usually uses fixed projection parameters, and fails to dynamically adjust according to the specific optical properties of the light incident plate (such as transmittance, refractive index and thickness), which may cause excessive loss or refraction distortion of light when passing through the light incident plate, affecting the brightness and clarity of the image, and there is room for improvement. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present application provides a holographic projection control method for a projector.

[0005] In a first aspect, the present application provides a holographic projection control method of a projector, comprising the following steps:

[0006] Obtaining optical characteristic parameters corresponding to the light incident plate through a preset detection device, wherein the optical characteristic parameters include the type, material, thickness, transmittance and refractive index corresponding to the light incident plate;

[0007] According to the optical characteristic parameters corresponding to the light incident plate, the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source are determined;

[0008] In response to the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source, the light source output power corresponding to the projection light source is adjusted according to the optimal projection light source intensity corresponding to the projection light source, and the projection direction corresponding to the projector is adjusted according to the optimal projection angle corresponding to the projection light source;

[0009] The status information corresponding to the light incident panel is monitored in real time, and when the status information corresponding to the light incident panel is abnormal, the projection parameters corresponding to the projector are dynamically adjusted.

[0010] Preferably, after obtaining the optical characteristic parameters corresponding to the light incident plate through a preset detection device, the method further includes:

[0011] Obtaining optical characteristic parameters corresponding to the light incident plate, extracting the type corresponding to the light incident plate from the optical characteristic parameters, comparing the type corresponding to the light incident plate with the type corresponding to the light incident plate stored in the cloud database, and confirming the preset parameters corresponding to the light incident plate stored in the cloud database based on the comparison result;

[0012] Compare the optical characteristic parameters corresponding to the light incident plate with the preset parameters stored in the cloud database to confirm the deviation coefficients corresponding to the optical characteristic parameters corresponding to the light incident plate;

[0013] If the deviation coefficient corresponding to the optical characteristic parameter of the light incident plate exceeds the preset deviation threshold, the corresponding preset parameters in the cloud database are updated and adjusted, and the update information corresponding to each preset parameter update and adjustment is recorded, and the update information includes the update time, old parameter value, and new parameter value.

[0014] Preferably, according to the optical characteristic parameters corresponding to the light incident plate, determining the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source specifically includes:

[0015] The process of determining the optimal projection light source intensity corresponding to the projection light source is as follows:

[0016] Obtaining optical characteristic parameters corresponding to the light incident plate, and confirming the light transmittance T and thickness d corresponding to the light incident and output plate from the optical characteristic parameters corresponding to the light incident plate;

[0017] By formula Determine the optimal projection light source intensity Iproj corresponding to the projection light source, where α represents the absorption coefficient corresponding to the preset light incident plate, I 0 It is expressed as the initial intensity corresponding to the incident light;

[0018] The process of determining the optimal projection angle corresponding to the projection light source is as follows:

[0019] Acquire optical characteristic parameters corresponding to the light incident plate, and determine the refractive index n corresponding to the light incident and output plate from the optical characteristic parameters corresponding to the light incident plate;

[0020] By formula Determine the optimal projection angle θ corresponding to the projection light source 1 , where n 0 It is expressed as the refractive index of the external medium of the preset light-entry plate, θ 2 It represents the refraction angle of the preset projection light source at the light incident plate.

[0021] Preferably, real-time monitoring of the status information corresponding to the light incident panel specifically includes:

[0022] The change coefficients of the transmittance and refractive index of the light incident plate are monitored in real time by a preset optical sensor, wherein the optical sensor includes at least one light intensity sensor and one refractive index detection sensor;

[0023] When it is monitored that the change coefficient of the transmittance and refractive index of the light incident plate exceeds the preset threshold, the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source are adjusted, and the light source output power and projection direction corresponding to the projector are dynamically adjusted.

[0024] Preferably, before obtaining the optical characteristic parameters corresponding to the light incident plate, the method further includes:

[0025] Before projection, the surface of the light incident plate is scanned by a preset laser scanner to obtain the flatness coefficient corresponding to the surface of the light incident plate;

[0026] According to the flatness coefficient corresponding to the surface of the light incident plate, the resolution of the holographic image corresponding to the projector is adjusted. The process of adjusting the resolution of the holographic image corresponding to the projector is as follows:

[0027] When the flatness coefficient corresponding to the surface of the light incident plate is lower than the preset flatness threshold, the resolution of the holographic image needs to be reduced;

[0028] When the flatness coefficient corresponding to the surface of the light incident plate exceeds a preset flatness threshold, the resolution of the holographic image needs to be improved.

[0029] Preferably, real-time monitoring of status information corresponding to the light incident panel specifically includes:

[0030] The temperature value of the light input plate is monitored by a preset temperature sensor. When it is detected that the temperature value of the light input plate exceeds a preset threshold, the power of the projection light source is reduced to avoid deformation of the light input plate or change of optical properties due to high temperature;

[0031] When it is detected that the temperature value of the light incident plate returns to a normal range, the original projection light source intensity and projection angle are restored.

[0032] In a second aspect, the present application provides a holographic projection control system of a projector, comprising:

[0033] An information acquisition module, used to acquire optical characteristic parameters corresponding to the light incident plate through a preset detection device, wherein the optical characteristic parameters include the type, material, thickness, transmittance and refractive index corresponding to the light incident plate;

[0034] An analysis module, used to determine the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source according to the optical characteristic parameters corresponding to the light incident plate;

[0035] A response module, used to respond to the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source, adjust the light source output power corresponding to the projection light source according to the optimal projection light source intensity corresponding to the projection light source, and adjust the projection direction corresponding to the projector according to the optimal projection angle corresponding to the projection light source;

[0036] The adjustment module is used to monitor the status information corresponding to the light incident plate in real time, and when the status information corresponding to the light incident plate is abnormal, the projection parameters corresponding to the projector are dynamically adjusted.

[0037] In a third aspect, the present application provides a computer-readable storage medium storing instructions, which, when executed on a computer, enables the computer to execute any one of the above-described methods for controlling holographic projection of a projector.

[0038] In summary, the present application includes at least one of the following beneficial technical effects:

[0039] 1. The present invention provides a holographic projection control method for a projector, which obtains the optical characteristic parameters of the light incident plate through a preset detection device, thereby ensuring that the projection system can dynamically adjust the projection parameters according to the actual situation of the light incident plate, and the dynamic adjustment mechanism can effectively optimize the output power and projection angle of the projection light source, thereby ensuring that the energy loss of light passing through the light incident plate is minimized, avoiding the phenomenon of the image being too dark or too bright, and improving the brightness and clarity of the projection. Furthermore, the dynamic adjustment of the projection angle can reduce the refraction distortion of the light in the light incident plate, ensuring the accuracy and three-dimensional sense of the projected image;

[0040] 2. By real-time monitoring of the status information of the light input plate, the projection parameters can be adjusted in time when the optical properties of the light input plate change to avoid the degradation of image quality. The further real-time response mechanism ensures the long-term stability and reliability of the holographic projection system, especially under complex environmental conditions, and can maintain high-quality projection effects, greatly improving the system's adaptability, stability and imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0042] Figure 1 It is a flow chart of the method for controlling holographic projection of the projector according to the embodiment of the present application.

[0043] Figure 2 It is a system schematic diagram of the holographic projection control of the projector according to the embodiment of the present application. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-2 This application is described in further detail.

[0045] Example 1

[0046] The embodiment of the present application discloses a holographic projection control method of a projector.

[0047] Reference Figure 1 , a holographic projection control method of a projector, comprising the following steps:

[0048] Obtaining optical characteristic parameters corresponding to the light incident plate through a preset detection device, wherein the optical characteristic parameters include the type, material, thickness, transmittance and refractive index corresponding to the light incident plate;

[0049] According to the optical characteristic parameters corresponding to the light incident plate, the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source are determined;

[0050] In response to the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source, the light source output power corresponding to the projection light source is adjusted according to the optimal projection light source intensity corresponding to the projection light source, and the projection direction corresponding to the projector is adjusted according to the optimal projection angle corresponding to the projection light source;

[0051] The status information corresponding to the light incident panel is monitored in real time, and when the status information corresponding to the light incident panel is abnormal, the projection parameters corresponding to the projector are dynamically adjusted.

[0052] It should be noted that after obtaining the optical characteristic parameters corresponding to the light incident plate through the preset detection device, the following steps are also included:

[0053] Obtaining optical characteristic parameters corresponding to the light incident plate, extracting the type corresponding to the light incident plate from the optical characteristic parameters, comparing the type corresponding to the light incident plate with the type corresponding to the light incident plate stored in the cloud database, and confirming the preset parameters corresponding to the light incident plate stored in the cloud database based on the comparison result;

[0054] Compare the optical characteristic parameters corresponding to the light incident plate with the preset parameters stored in the cloud database to confirm the deviation coefficients corresponding to the optical characteristic parameters corresponding to the light incident plate;

[0055] If the deviation coefficient corresponding to the optical characteristic parameter of the light incident plate exceeds the preset deviation threshold, the corresponding preset parameters in the cloud database are updated and adjusted, and the update information corresponding to each preset parameter update and adjustment is recorded, and the update information includes the update time, old parameter value, and new parameter value.

[0056] Specifically, in an embodiment of the present application, an optical sensor (such as a spectrometer, a refractometer, a transmittance meter, etc.) is used to monitor the optical characteristic parameters of the light incident plate in real time, and the update information corresponding to each preset parameter update adjustment is recorded to facilitate trend analysis and future maintenance.

[0057] Further, according to the optical characteristic parameters corresponding to the light incident plate, the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source are determined, specifically including:

[0058] The process of determining the optimal projection light source intensity corresponding to the projection light source is as follows:

[0059] Obtaining optical characteristic parameters corresponding to the light incident plate, and confirming the light transmittance T and thickness d corresponding to the light incident and output plate from the optical characteristic parameters corresponding to the light incident plate;

[0060] By formula Determine the optimal projection light source intensity Iproj corresponding to the projection light source, where α represents the absorption coefficient corresponding to the preset light incident plate, I 0 It is expressed as the initial intensity corresponding to the incident light;

[0061] The process of determining the optimal projection angle corresponding to the projection light source is as follows:

[0062] Acquire optical characteristic parameters corresponding to the light incident plate, and determine the refractive index n corresponding to the light incident and output plate from the optical characteristic parameters corresponding to the light incident plate;

[0063] By formula Determine the optimal projection angle θ corresponding to the projection light source 1 , where n 0 It is expressed as the refractive index of the external medium of the preset light-entry plate, θ 2 It represents the refraction angle of the preset projection light source at the light incident plate.

[0064] Specifically, in the embodiment of the present application, when the transmittance is low, the intensity of the projection light source needs to be increased to compensate for the light loss. The greater the thickness, the more light is absorbed and scattered in the light incident plate, so the intensity of the projection light source also needs to be increased accordingly.

[0065] In applications, the refraction angle of the preset projection light source on the light incident plate is usually the optimal incident angle of the material of the light incident plate. In the embodiment of the present application, the refractive index of the preset external medium of the light incident plate is 1.

[0066] It should be noted that the real-time monitoring of the status information corresponding to the light input panel specifically includes:

[0067] The change coefficients of the transmittance and refractive index of the light incident plate are monitored in real time by a preset optical sensor, wherein the optical sensor includes at least one light intensity sensor and one refractive index detection sensor;

[0068] When it is monitored that the change coefficient of the transmittance and refractive index of the light incident plate exceeds the preset threshold, the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source are adjusted, and the light source output power and projection direction corresponding to the projector are dynamically adjusted.

[0069] Specifically, the above steps can realize real-time response to the state change of the light incident plate, ensuring that the imaging quality of the holographic projection is not affected by the changes in the external environment.

[0070] Furthermore, before obtaining the optical characteristic parameters corresponding to the light incident plate, the following steps are also included:

[0071] Before projection, the surface of the light incident plate is scanned by a preset laser scanner to obtain the flatness coefficient corresponding to the surface of the light incident plate;

[0072] According to the flatness coefficient corresponding to the surface of the light incident plate, the resolution of the holographic image corresponding to the projector is adjusted. The process of adjusting the resolution of the holographic image corresponding to the projector is as follows:

[0073] When the flatness coefficient corresponding to the surface of the light incident plate is lower than the preset flatness threshold, the resolution of the holographic image needs to be reduced;

[0074] When the flatness coefficient corresponding to the surface of the light incident plate exceeds a preset flatness threshold, the resolution of the holographic image needs to be improved.

[0075] It should be noted that the real-time monitoring of the status information corresponding to the light input panel also includes:

[0076] The temperature value of the light input plate is monitored by a preset temperature sensor. When it is detected that the temperature value of the light input plate exceeds a preset threshold, the power of the projection light source is reduced to avoid deformation of the light input plate or change of optical properties due to high temperature;

[0077] When it is detected that the temperature value of the light incident plate returns to a normal range, the original projection light source intensity and projection angle are restored.

[0078] Example 2

[0079] The embodiment of the present application also discloses a holographic projection control system of a projector.

[0080] Reference Figure 2 , a holographic projection control system of a projector, comprising:

[0081] An information acquisition module, used to acquire optical characteristic parameters corresponding to the light incident plate through a preset detection device, wherein the optical characteristic parameters include the type, material, thickness, transmittance and refractive index corresponding to the light incident plate;

[0082] An analysis module, used to determine the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source according to the optical characteristic parameters corresponding to the light incident plate;

[0083] A response module, used to respond to the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source, adjust the light source output power corresponding to the projection light source according to the optimal projection light source intensity corresponding to the projection light source, and adjust the projection direction corresponding to the projector according to the optimal projection angle corresponding to the projection light source;

[0084] The adjustment module is used to monitor the status information corresponding to the light incident plate in real time, and when the status information corresponding to the light incident plate is abnormal, the projection parameters corresponding to the projector are dynamically adjusted.

[0085] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention, they should all fall within the protection scope of the present invention.

[0086] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0087] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.

Claims

1. A holographic projection control method for a projector, characterized in that: The following steps are involved: Obtaining optical characteristic parameters corresponding to the light incident plate through a preset detection device, wherein the optical characteristic parameters include the type, material, thickness, transmittance and refractive index corresponding to the light incident plate; According to the optical characteristic parameters corresponding to the light incident plate, the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source are determined; In response to the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source, the light source output power corresponding to the projection light source is adjusted according to the optimal projection light source intensity corresponding to the projection light source, and the projection direction corresponding to the projector is adjusted according to the optimal projection angle corresponding to the projection light source; The status information corresponding to the light incident panel is monitored in real time, and when the status information corresponding to the light incident panel is abnormal, the projection parameters corresponding to the projector are dynamically adjusted.

2. The holographic projection control method of a projector according to claim 1, characterized in that: After obtaining the optical characteristic parameters corresponding to the light incident plate through the preset detection device, the method further includes: Obtaining optical characteristic parameters corresponding to the light incident plate, extracting the type corresponding to the light incident plate from the optical characteristic parameters, comparing the type corresponding to the light incident plate with the type corresponding to the light incident plate stored in the cloud database, and confirming the preset parameters corresponding to the light incident plate stored in the cloud database based on the comparison result; Compare the optical characteristic parameters corresponding to the light incident plate with the preset parameters stored in the cloud database to confirm the deviation coefficients corresponding to the optical characteristic parameters corresponding to the light incident plate; If the deviation coefficient corresponding to the optical characteristic parameter of the light incident plate exceeds the preset deviation threshold, the corresponding preset parameters in the cloud database are updated and adjusted, and the update information corresponding to each preset parameter update and adjustment is recorded, and the update information includes the update time, old parameter value, and new parameter value.

3. The holographic projection control method of a projector according to claim 1, characterized in that: According to the optical characteristic parameters corresponding to the light incident plate, the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source are determined, including: The process of confirming the optimal projection light source intensity corresponding to the projection light source is as follows: Obtaining optical characteristic parameters corresponding to the light incident plate, and confirming the light transmittance T and thickness d corresponding to the light incident and output plate from the optical characteristic parameters corresponding to the light incident plate; By formula Determine the optimal projection light source intensity Iproj corresponding to the projection light source, where α represents the absorption coefficient corresponding to the preset light incident plate, and I0 represents the initial intensity corresponding to the incident light; The process of determining the optimal projection angle corresponding to the projection light source is as follows: Acquire optical characteristic parameters corresponding to the light incident plate, and determine the refractive index n corresponding to the light incident and output plate from the optical characteristic parameters corresponding to the light incident plate; By formula The best projection angle θ1 corresponding to the projection light source is determined, wherein n0 represents the refractive index corresponding to the preset external medium of the light incident plate, and θ2 represents the refraction angle corresponding to the preset projection light source at the light incident plate.

4. The holographic projection control method of a projector according to claim 1, characterized in that: Real-time monitoring of the status information of the light-input panel, including: The change coefficients of the transmittance and refractive index of the light incident plate are monitored in real time by a preset optical sensor, wherein the optical sensor includes at least one light intensity sensor and one refractive index detection sensor; When it is monitored that the change coefficient of the transmittance and refractive index of the light incident plate exceeds the preset threshold, the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source are adjusted, and the light source output power and projection direction corresponding to the projector are dynamically adjusted.

5. The holographic projection control method of a projector according to claim 1, characterized in that: Before obtaining the optical characteristic parameters corresponding to the light-entering plate, the following steps are also included: Before projection, the surface of the light incident plate is scanned by a preset laser scanner to obtain the flatness coefficient corresponding to the surface of the light incident plate; According to the flatness coefficient corresponding to the surface of the light incident plate, the resolution of the holographic image corresponding to the projector is adjusted. The process of adjusting the resolution of the holographic image corresponding to the projector is as follows: When the flatness coefficient corresponding to the surface of the light incident plate is lower than the preset flatness threshold, the resolution of the holographic image needs to be reduced; When the flatness coefficient corresponding to the surface of the light incident plate exceeds a preset flatness threshold, the resolution of the holographic image needs to be improved.

6. The holographic projection control method of a projector according to claim 1, characterized in that: Real-time monitoring of the status information of the light-input panel, including: The temperature value of the light input plate is monitored by a preset temperature sensor. When it is detected that the temperature value of the light input plate exceeds a preset threshold, the power of the projection light source is reduced to avoid deformation of the light input plate or change of optical properties due to high temperature; When it is detected that the temperature value of the light incident plate returns to a normal range, the original projection light source intensity and projection angle are restored.

7. A holographic projection control system for a projector, applied to a holographic projection control method for a projector as claimed in any one of claims 1 to 6, characterized in that: include: An information acquisition module, used to acquire optical characteristic parameters corresponding to the light incident plate through a preset detection device, wherein the optical characteristic parameters include the type, material, thickness, transmittance and refractive index corresponding to the light incident plate; An analysis module, used to determine the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source according to the optical characteristic parameters corresponding to the light incident plate; A response module, used to respond to the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source, adjust the light source output power corresponding to the projection light source according to the optimal projection light source intensity corresponding to the projection light source, and adjust the projection direction corresponding to the projector according to the optimal projection angle corresponding to the projection light source; The adjustment module is used to monitor the status information corresponding to the light incident plate in real time, and when the status information corresponding to the light incident plate is abnormal, the projection parameters corresponding to the projector are dynamically adjusted.

8. A computer-readable storage medium, characterized in that: Instructions are stored, and when the instructions are run on a computer, the computer executes a holographic projection control method for a projector as claimed in any one of claims 1 to 6.

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