A holographic projection control method for a projector

Abstract

The application discloses a holographic projection control method of a projector, and relates to the technical field of monitoring and control, which comprises the following steps: acquiring optical characteristic parameters corresponding to an entrance light plate through a preset detection device; confirming optimal projection light source intensity and an optimal projection angle corresponding to a projection light source according to the optical characteristic parameters corresponding to the entrance light plate; adjusting 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 a projection direction corresponding to the projector according to the optimal projection angle corresponding to the projection light source in response to the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source; and monitoring state information corresponding to the entrance light plate in real time, and dynamically adjusting projection parameters corresponding to the projector when the state information corresponding to the entrance light plate is abnormal. The application has the effect of improving holographic projection efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of monitoring control, in particular to a holographic projection control method of a projector. BACKGROUND

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

[0003] In related technologies, the existing holographic projection control method of the projector usually uses fixed projection parameters, which fails to dynamically adjust according to the specific optical characteristics (such as transmittance, refractive index, and thickness) of the light-entrance plate, resulting in excessive loss or refraction distortion of light when passing through the light-entrance plate, affecting the brightness and clarity of the image, which needs to be improved. SUMMARY

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

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

[0006] Obtaining the optical characteristic parameters corresponding to the light-entrance plate through the preset detection device, the optical characteristic parameters including the type, material, thickness, transmittance, and refractive index corresponding to the light-entrance plate;

[0007] According to the optical characteristic parameters corresponding to the light-entrance plate, confirming the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source;

[0008] In response 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;

[0009] Real-time monitoring the state information corresponding to the light-entrance plate, and dynamically adjusting the projection parameters corresponding to the projector when the state information corresponding to the light-entrance plate is abnormal.

[0010] Preferably, after obtaining the optical characteristic parameters corresponding to the light-incident plate by the preset detection device, the method further comprises:

[0011] obtaining the 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] comparing 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 each optical characteristic parameter of the light-incident plate;

[0013] if the deviation coefficients corresponding to the optical characteristic parameters of the light-incident plate exceed the preset deviation threshold, updating and adjusting the corresponding preset parameters in the cloud database, and recording the update information corresponding to each preset parameter update and adjustment, the update information including update time, old parameter value, and new parameter value.

[0014] Preferably, 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 confirmed, specifically comprising:

[0015] the process of confirming the optimal projection light source intensity corresponding to the projection light source is:

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

[0017] by the formula confirming the optimal projection light source intensity Iproj corresponding to the projection light source, wherein α represents the preset absorption coefficient corresponding to the light-incident plate, and I0 represents the initial intensity corresponding to the incident light;

[0018] the process of confirming the optimal projection angle corresponding to the projection light source is:

[0019] obtaining the optical characteristic parameters corresponding to the light-incident plate, and confirming the refractive index n corresponding to the light-incident plate from the optical characteristic parameters corresponding to the light-incident plate;

[0020] by the formula confirming the optimal projection angle θ1 corresponding to the projection light source, wherein n0 represents the preset refractive index corresponding to the medium outside the light-incident plate, and θ2 represents the preset refraction angle of the projection light source corresponding to the light-incident plate.

[0021] Preferably, the state information corresponding to the light-incident plate is monitored in real time, specifically comprising:

[0022] The preset optical sensor is used for monitoring the variation coefficient of the light transmittance and the refractive index of the light-incident plate in real time, and the optical sensor comprises at least one light intensity sensor and one refractive index detection sensor.

[0023] When the variation coefficient of the light transmittance and the refractive index of the light-incident plate is monitored to exceed 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 the projection direction corresponding to the projector are dynamically adjusted.

[0024] Preferably, before the optical characteristic parameters corresponding to the light-incident plate are acquired, the following steps are further included:

[0025] Before projection, the surface of the light-incident plate is scanned by the preset laser scanner, so as to acquire 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 holographic image resolution corresponding to the projector is adjusted, and the process of adjusting the holographic image resolution 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 the preset flatness threshold, the resolution of the holographic image needs to be improved.

[0029] Preferably, the state information corresponding to the light-incident plate is monitored in real time, and the state information further includes the following:

[0030] The temperature value of the light-incident plate is monitored by the preset temperature sensor, and when it is detected that the temperature value of the light-incident plate exceeds the preset threshold, the power of the projection light source is reduced to avoid the deformation of the light-incident plate or the change of the optical characteristics caused by high temperature.

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

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

[0033] The information acquisition module is used for acquiring the optical characteristic parameters corresponding to the light-incident plate by the preset detection device, and the optical characteristic parameters include the type, the material, the thickness, the light transmittance and the refractive index corresponding to the light-incident plate.

[0034] The analysis module is used for confirming 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] The response module is configured 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 adjusting module is configured to monitor the state information corresponding to the light-incident plate in real time, and dynamically adjust the projection parameter corresponding to the projector when the state information corresponding to the light-incident plate is abnormal.

[0037] In a third aspect, the present application provides a computer readable storage medium storing instructions, when the instructions are executed on a computer, the computer executes the holographic projection control method of the projector according to any one of the above aspects.

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

[0039] 1. The present application provides a holographic projection control method of a projector, which obtains the optical characteristic parameters of a light-incident plate through a preset detection device, thereby ensuring that the projection system can dynamically adjust the projection parameter according to the actual situation of the light-incident plate, and the dynamic adjustment mechanism can effectively optimize the output power and the projection angle of the projection light source, thereby minimizing the energy loss of light when passing through the light-incident plate, avoiding the phenomenon of too dark or too bright image, improving the brightness and clarity of the projection, and further, dynamically adjusting the projection angle can reduce the refraction distortion of light in the light-incident plate, ensuring the accuracy and stereoscopic effect of the projection image.

[0040] 2. By monitoring the state information of the light-incident plate in real time, the projection parameter can be adjusted in time when the optical characteristics of the light-incident plate change, avoiding the decline of image quality, and further, the real-time response mechanism ensures the long-term stability and reliability of the holographic projection system, especially in complex environmental conditions, which can maintain high-quality projection effect, greatly improving the adaptability, stability and imaging quality of the system. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work.

[0042] Figure 1 is the method flow chart of the holographic projection control of the projector of the present application embodiment.

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

[0044] The application will be further described below in conjunction with the accompanying drawings. Figures 1-2 The application will be further described below in conjunction with the accompanying drawings.

[0045] Embodiment 1

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

[0047] Reference Figure 1 The holographic projection control method of the projector comprises the following steps:

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

[0049] Confirming optimal projection light source intensity and an optimal projection angle corresponding to the projection light source according to the optical characteristic parameters corresponding to the light-incident plate;

[0050] Adjusting 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 a projection direction corresponding to the projector according to the optimal projection angle corresponding to the projection light source in response to the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source;

[0051] Real-time monitoring state information corresponding to the light-incident plate, and dynamically adjusting projection parameters corresponding to the projector when the state information corresponding to the light-incident plate is abnormal.

[0052] It should be noted that after obtaining the optical characteristic parameters corresponding to the light-incident plate through the preset detection device, the method further comprises:

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

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

[0055] If the deviation coefficients corresponding to the optical characteristic parameters corresponding to the light-incident plate exceed a preset deviation threshold, updating and adjusting the corresponding preset parameters in the cloud database, and recording update information corresponding to each preset parameter update and adjustment, wherein the update information comprises an update time, an old parameter value and a new parameter value.

[0056] Specifically, in the embodiment of the present application, the optical characteristics parameters of the light-incident plate are monitored in real time by using an optical sensor (such as a spectrometer, a refractometer, a transmittance measuring instrument, etc.), and the update information corresponding to each preset parameter update adjustment is recorded so as to perform trend analysis and future maintenance.

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

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

[0059] The optical characteristics parameters of the light-incident plate are obtained, and the transmittance T and the thickness d of the light-incident plate are confirmed from the optical characteristics parameters of the light-incident plate;

[0060] The optimal projection light source intensity Iproj corresponding to the projection light source is confirmed by the formula , wherein a represents the preset absorption coefficient of the light-incident plate, and I0 represents the initial intensity of the incident light;

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

[0062] The optical characteristics parameters of the light-incident plate are obtained, and the refractive index n of the light-incident plate is confirmed from the optical characteristics parameters of the light-incident plate;

[0063] The optimal projection angle θ1 corresponding to the projection light source is confirmed by the formula , wherein n0 represents the preset refractive index of the external medium of the light-incident plate, and θ2 represents the preset refraction angle of the projection light source in the light-incident plate.

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

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

[0066] It should be noted that the state information of the light-incident plate is monitored in real time, specifically including:

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

[0068] When the change coefficient of the transmittance and the refractive index of the light-incident plate is monitored to exceed a 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 the projection direction corresponding to the projector are dynamically adjusted.

[0069] Specifically, the real-time response to the state change of the light-incident plate can be realized through the above steps, and the imaging quality of the holographic projection is ensured not to be affected by the change of the external environment.

[0070] Further, before obtaining the optical characteristic parameters corresponding to the light-incident plate, the method further comprises:

[0071] Before projection, the surface of the light-incident plate is scanned by a preset laser scanner, and then the flatness coefficient corresponding to the surface of the light-incident plate is obtained.

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

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

[0075] It should be noted that the state information corresponding to the light-incident plate is monitored in real time, and specifically further comprises:

[0076] The temperature value of the light-incident plate is monitored by a preset temperature sensor, and when it is detected that the temperature value of the light-incident plate exceeds a preset threshold, the power of the projection light source is reduced to avoid deformation or change of optical characteristics of the light-incident plate caused by high temperature;

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

[0078] Embodiment 2

[0079] The holographic projection control system of the projector is also disclosed.

[0080] Reference Figure 2 A holographic projection control system of a projector comprises:

[0081] An information acquisition module is configured to acquire optical characteristic parameters corresponding to a light-incident plate by 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] The analysis module is configured 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 of the light-incident plate.

[0083] The response module is configured to 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 configured to monitor the state information corresponding to the light-incident plate in real time, and dynamically adjust the projection parameter corresponding to the projector when the state information corresponding to the light-incident plate is abnormal.

[0085] The above content is merely an example and a description of the present application, and those skilled in the art can make various modifications or supplements or use similar ways to replace the described specific embodiments, as long as the modifications or supplements or replacements do not deviate from the concept of the present application, and should belong to the protection scope of the present application.

[0086] In the description of the present application, the description of the terms "one embodiment", "example", "specific example" and the like 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 application. In the present application, the illustrative description 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 application disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and limit the present application to the specific embodiments. Obviously, many modifications and changes can be made according to the content of the present application. The present application selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and use the present application.

Claims

1. A holographic projection control method of a projector, characterized by, The method comprises the following steps: acquiring optical characteristic parameters of the light-incident plate by a preset detection device, the optical characteristic parameters including the type, material, thickness, light transmittance and refractive index of the light-incident plate; confirming the optimal projection light source intensity and the optimal projection angle of the projection light source according to the optical characteristic parameters of the light-incident plate; adjusting the light source output power of the projection light source according to the optimal projection light source intensity of the projection light source and adjusting the projection direction of the projector according to the optimal projection angle of the projection light source in response to the optimal projection light source intensity and the optimal projection angle of the projection light source; monitoring the state information of the light-incident plate in real time, and dynamically adjusting the projection parameters of the projector when the state information of the light-incident plate is abnormal.

2. The holographic projection control method of a projector according to claim 1, wherein, After acquiring the optical characteristic parameters of the light-incident plate by the preset detection device, the method further comprises the following steps: acquiring the optical characteristic parameters of the light-incident plate, extracting the type of the light-incident plate from the optical characteristic parameters, comparing the type of the light-incident plate with the type of the light-incident plate stored in the cloud database, and confirming the preset parameters of the light-incident plate stored in the cloud database based on the comparison result; comparing the optical characteristic parameters of the light-incident plate with the preset parameters stored in the cloud database to confirm the deviation coefficients of the optical characteristic parameters of the light-incident plate; updating the corresponding preset parameters in the cloud database if the deviation coefficients of the optical characteristic parameters of the light-incident plate exceed the preset deviation threshold, and recording the update information of each preset parameter update, the update information including the update time, the old parameter value and the new parameter value.

3. The method of claim 1, wherein the holographic projection control method of a projector is characterized by, According to the optical characteristic parameters of the light-incident plate, the optimal projection light source intensity and the optimal projection angle of the projection light source are confirmed, specifically comprising the following steps: The process of confirming the optimal projection light source intensity of the projection light source comprises the following steps: acquiring the optical characteristic parameters of the light-incident plate, and confirming the light transmittance T and the thickness d of the light-incident plate from the optical characteristic parameters of the light-incident plate; By formula The optimal projection light source intensity Iproj corresponding to the projection light source is confirmed, wherein α represents the preset absorption coefficient corresponding to the light inlet plate, and I0 represents the initial intensity corresponding to the incident light. The process of confirming the optimal projection angle of the projection light source comprises the following steps: acquiring the optical characteristic parameters of the light-incident plate, and confirming the refractive index n of the light-incident plate from the optical characteristic parameters of the light-incident plate; By the formula The optimal projection angle θ1 corresponding to the projection light source is confirmed, wherein n0 represents the refractive index corresponding to the preset external medium of the light-in plate, and θ2 represents the preset refraction angle of the projection light source corresponding to the light-in plate.

4. The method of claim 1, wherein the holographic projection control method of a projector is characterized by, The process of monitoring the state information of the light-incident plate in real time comprises the following steps: monitoring the change coefficients of the light transmittance and the refractive index of the light-incident plate in real time by a preset optical sensor, the optical sensor comprising at least one light intensity sensor and one refractive index detection sensor; adjusting the optimal projection light source intensity and the optimal projection angle of the projection light source and dynamically adjusting the light source output power and the projection direction of the projector when the change coefficients of the light transmittance and the refractive index of the light-incident plate exceed the preset threshold.

5. The method of claim 1, wherein the holographic projection control method of a projector is characterized by, Before acquiring the optical characteristic parameters of the light-incident plate, the method further comprises the following steps: scanning the surface of the light-incident plate by a preset laser scanner before projection to acquire the flatness coefficient of the surface of the light-incident plate; adjusting the holographic image resolution of the projector according to the flatness coefficient of the surface of the light-incident plate, the process of adjusting the holographic image resolution of the projector comprising the following steps: When the flatness coefficient corresponding to the surface of the light-entrance 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-entrance plate exceeds the preset flatness threshold, the resolution of the holographic image needs to be increased.

6. The method of claim 1, wherein the holographic projection control method of a projector is characterized by, The state information corresponding to the light-entrance plate is monitored in real time, and the state information further includes: The temperature value of the light-entrance plate is monitored by a preset temperature sensor, and when it is detected that the temperature value of the light-entrance plate exceeds the preset threshold, the power of the projection light source is reduced to avoid deformation of the light-entrance plate or change of optical properties caused by high temperature. And when it is detected that the temperature value of the light-entrance plate returns to the normal range, the original projection light source intensity and projection angle are restored.

7. A holographic projection control system of a projector, applied to the holographic projection control method of any one of claims 1-6, characterized in that: The information acquisition module is configured to acquire the optical property parameters corresponding to the light-entrance plate by a preset detection device, and the optical property parameters include the type, material, thickness, light transmittance and refractive index corresponding to the light-entrance plate. The analysis module is configured to determine the optimal projection light source intensity and the optimal projection angle corresponding to the projection light source according to the optical property parameters corresponding to the light-entrance plate. The response module is configured 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 configured to monitor the state information corresponding to the light-entrance plate in real time, and when the state information corresponding to the light-entrance plate is abnormal, the projection parameters corresponding to the projector are dynamically adjusted. The instructions are stored, and when the instructions are run on the computer, the computer executes the holographic projection control method of the projector according to any one of claims 1-6.

8. A computer-readable storage medium, characterized in that: ​

Images