Image protection method, light control device, wearable device and image protection system

Abstract

The invention discloses an image protection method, a light control device, a wearable device and an image protection system, the image protection method is applied to the light control device, the light control device comprises an infrared light source, and the infrared light source is used for sending coding information of a target wave band; the method comprises the following steps: generating image protection information and corresponding verification information according to an image playing instruction; encoding the image protection information and the corresponding verification information to generate encoding information; and controlling the infrared light source to send the coding information of the target wave band, so that the wearable device which collects the coding information limits an image collection function according to the coding information. By means of the mode, the stealing and recording behaviors of the wearable device on the video images needing to be protected are forbidden to a great extent, the purpose of preventing screen shooting in a cinema is achieved, the copyright of film and television works is protected, and the protection cost is saved while high reliability is achieved.

Description

Technical Field

[0001] The present application relates to the field of image protection technology, and in particular to an image protection method, a lighting control device, a wearable device, and an image protection system. Background Art

[0002] Wearable devices with camera functions, such as smart camera glasses, have recently garnered widespread public attention. Compared to VR (Virtual Reality) and AR (Augmented Reality) devices, these devices lack display functionality and are closer in size and weight to traditional glasses. The difference between these devices and regular glasses is subtle, making them difficult to detect and potentially exploit for surreptitious filming. In cinemas, using a wearable camera to record the screen infringes on the copyright of a film or television work. However, due to the inherent nature of these devices, detection is difficult, making piracy difficult to police.

[0003] The above content is only used to assist in understanding the technical solution of this application and does not constitute an admission that the above content is prior art. Summary of the Invention

[0004] The main purpose of this application is to provide an image protection method, a lighting control device, a wearable device and an image protection system, aiming to solve the technical problem in the prior art that it is impossible to prohibit the use of wearable devices with camera functions to record videos illegally.

[0005] To achieve the above-mentioned object, the present application proposes an image protection method, which is applied to a lighting control device, wherein the lighting control device includes an infrared light source, and the infrared light source is used to transmit coded information of a target band; The image protection method comprises: In response to an image playback instruction, generating image protection information and verification information corresponding to the image protection information according to the image playback instruction; Encoding the image protection information and verification information corresponding to the image protection information to generate coded information; The infrared light source is controlled to send coded information of a target band, so that a wearable device that has collected the coded information limits an image collection function according to the coded information.

[0006] In one embodiment, the step of generating image protection information and verification information corresponding to the image protection information according to the image playback instruction includes: generating an image protection instruction and an information timestamp according to the image playing instruction; determining image protection information according to the image protection instruction and the information timestamp; Signing the image protection information according to the encryption private key to obtain signature information; Verification information corresponding to the image protection information is generated according to the signature information and the information verification code.

[0007] In one embodiment, the step of controlling the infrared light source to transmit coded information of a target wavelength band includes: Determine the lighting control strategy based on lighting brightness, flashing frequency, and information sending cycle; The infrared light source is controlled to send coded information of the target band according to the lighting control strategy.

[0008] In addition, to achieve the above-mentioned purpose, the present application also proposes an image protection method, which is applied to a wearable device, wherein the wearable device includes a camera module, and the camera module is used to collect image information; The image protection method comprises: Extracting information from the image information collected by the camera module to obtain coding information of the target band; Decoding the encoded information to obtain image protection information and verification information corresponding to the image protection information; performing a validity check on the image protection information according to the verification information corresponding to the image protection information to obtain a validity check result; When the validity check result of the image protection information is a valid information result, the image acquisition function of the camera module is restricted according to the image protection information.

[0009] In one embodiment, the step of performing validity verification on the image protection information according to the verification information corresponding to the image protection information to obtain a validity verification result includes: Determining signature information and information verification code according to verification information corresponding to the image protection information; Performing a hash operation on the image protection information to generate a target hash value; Verify the target hash value according to the encrypted public key and the signature information to obtain a signature verification result; Comparing the target hash value with the information check code to obtain a check code comparison result; A validity verification result of the image protection information is obtained according to the signature verification result and the check code comparison result.

[0010] In one embodiment, the step of limiting the image acquisition function of the camera module according to the image protection information includes: Parsing the image protection information to determine the image protection instruction and information timestamp; Performing a timeliness check on the image protection instruction according to the information timestamp and the current time, and determining a timeliness check result; When the timeliness check result is a preset result, the image acquisition function of the camera module is restricted according to the image protection instruction.

[0011] In one embodiment, the step of limiting the image acquisition function of the camera module according to the image protection information includes at least one of the following: shutting down the driver of the camera module according to the image protection information; A preset image is acquired according to the image protection information, and content is overwritten on the image information collected by the camera module based on the preset image.

[0012] In addition, to achieve the above-mentioned purpose, the present application further proposes a lighting control device, comprising: an information generation module, configured to respond to an image playback instruction and generate image protection information and verification information corresponding to the image protection information according to the image playback instruction; The information generating module is further configured to encode the image protection information and verification information corresponding to the image protection information to generate encoded information; The light control module is used to control the infrared light source to send the coded information through a light beam in a target band, so that the wearable device that collects the coded information limits the image acquisition function according to the coded information.

[0013] In addition, to achieve the above-mentioned purpose, the present application also proposes a wearable device, which includes: an information extraction module, which is used to extract information from the image information collected by the camera module to obtain coding information of the target band; an information decoding module, configured to decode the coded information to obtain image protection information and verification information corresponding to the image protection information; An information verification module, configured to perform validity verification on the image protection information according to verification information corresponding to the image protection information, and obtain a validity verification result; A function restriction module is used to restrict the image acquisition function of the camera module according to the image protection information when the validity check result of the image protection information is a valid information result.

[0014] In addition, to achieve the above-mentioned purpose, the present application also proposes an image protection system, which includes the lighting control device as described above and the wearable device as described above.

[0015] The present application provides an image protection method, which is applied to a lighting control device, wherein the lighting control device includes an infrared light source, and the infrared light source is used to send coded information of a target band; the image protection method includes: in response to an image playback instruction, generating image protection information and verification information corresponding to the image protection information according to the image playback instruction; encoding the image protection information and the verification information corresponding to the image protection information to generate coded information; controlling the infrared light source to send the coded information of the target band, so that the wearable device that collects the coded information limits its image acquisition function according to the coded information. Through the above method, when the image is played, the lighting control device controls the infrared light source to send the coded information through an invisible light beam of the target band, and the wearable device limits its own image acquisition function after collecting the coded information, thereby greatly prohibiting the use of wearable devices to piracy the video images to be protected, achieving the purpose of preventing theaters from being screen-shot, protecting the copyright of film and television works, and having high reliability while saving protection costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 A flowchart of the first embodiment of the image protection method of the present application is provided; Figure 2 A schematic diagram of the structure of a wearable device for the image protection method provided in Example 1 of the present application; Figure 3 A flowchart of the second embodiment of the image protection method of the present application is provided; Figure 4 A schematic diagram of a simplified process of the image protection method provided in Example 2 of the present application; Figure 5 This is a schematic diagram of the module structure of the lighting control device according to an embodiment of the present application; Figure 6 This is a schematic diagram of the module structure of the wearable device according to an embodiment of the present application; Figure 7 This is a schematic diagram of the device structure of the image protection system according to an embodiment of the present application.

[0019] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] It should be understood that the specific embodiments described herein are merely used to explain the technical solutions of the present application and are not intended to limit the present application.

[0021] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0022] The main solution of the embodiment of the present application is: in response to an image playback instruction, generating image protection information and verification information corresponding to the image protection information according to the image playback instruction; encoding the image protection information and the verification information corresponding to the image protection information to generate coded information; controlling the infrared light source to send coded information of the target band, so that the wearable device that collects the coded information limits the image acquisition function according to the coded information.

[0023] In a cinema setting, if a user uses a wearable device with a camera function to record the screen, it infringes the copyright of the film or television work. However, due to the characteristics of the device, it is difficult to detect, making it difficult to regulate the piracy of film and television works.

[0024] In this application, when the image is played, the lighting control device controls the infrared light source to send coded information through an invisible light beam in the target band. After the wearable device collects the coded information, it limits its own image acquisition function, thereby greatly prohibiting the use of wearable devices to illegally record protected video images, achieving the purpose of preventing theaters from being filmed, protecting the copyright of film and television works, and saving protection costs while having high reliability.

[0025] Based on this, the embodiment of the present application provides an image protection method, referring to Figure 1 , Figure 1 This is a flowchart of the first embodiment of the image protection method of the present application.

[0026] In this embodiment, the image protection method is applied to a lighting control device, wherein the lighting control device includes an infrared light source, and the infrared light source is used to transmit coded information of a target band. The method includes steps S10 to S30: Step S10 : In response to an image playback instruction, generating image protection information and verification information corresponding to the image protection information according to the image playback instruction.

[0027] It should be noted that the execution entity of this embodiment is the lighting control device in the image protection system. The lighting control device is a computing service device with data processing, network communication, and program execution functions. The image protection system includes the lighting control device and a wearable device. The lighting control device includes multiple infrared light sources for transmitting coded information in a target wavelength band; the wearable device includes a camera module for capturing image information. In this embodiment, the target wavelength band refers to an invisible infrared light beam band, such as infrared light in the 920nm band. In this embodiment, the wearable device's camera module does not filter out infrared light in the target wavelength band.

[0028] It is understandable that the lighting control device may include multiple infrared light sources. When the lighting control device can be used in a closed environment, such as a cinema, the lighting control device can be a control terminal for each theater in the theater, and multiple infrared light sources can be arranged around the curtains of the theater. In this embodiment, the infrared light source can be an infrared LED lamp or other infrared light source, and this embodiment does not limit this. In this embodiment, the wearable device has functions such as taking pictures, listening to music, and making calls. The size and weight are similar to ordinary glasses. The wearable device includes three parts: left temple, right temple, and front frame. Figure 2 As shown, the camera module is located in the front frame, while key components such as the glasses' mainboard and battery are located inside either temple. In this embodiment, the camera module is an RGB camera module, in which the CFA (Color Filter Array) does not filter out infrared light in the target wavelength band, thus allowing the capture of the light beam emitted by the infrared light source.

[0029] In a specific implementation, there is a common image protection protocol between the lighting control device and the wearable device. The image protection protocol may include the following content: the content of the "no shooting" invisible light communication protocol (for example, using 128-bit binary encoding), the signature authentication information of the lighting control device, the timeout mechanism, the information transmission mechanism, and the timestamp and other information.

[0030] It should be noted that when the lighting control device receives an image playback instruction, it indicates that it needs to play the image to be protected, and promptly generates image protection information for the image to be protected and verification information corresponding to the image protection information. In this embodiment, the image protection information includes but is not limited to the image protection instruction and the information timestamp when the image protection information is generated; the verification information corresponding to the image protection information includes signature information and information check code.

[0031] In a feasible implementation manner, the step S10 may further include steps A11 to A14: Step A11: Generate an image protection instruction and an information timestamp according to the image playing instruction.

[0032] Step A12: determining image protection information according to the image protection instruction and the information timestamp.

[0033] It should be noted that when an image playback instruction is received, an image protection instruction is generated. In this embodiment, the image protection instruction may be "prohibit shooting" or other related instructions. This embodiment does not limit the specific content of the image protection instruction.

[0034] It is understood that the timestamp of generating the image protection instruction is recorded, and this timestamp is the information timestamp, which is used to ensure the freshness of the image protection instruction and prevent replay attacks. The image protection instruction and the information timestamp are combined to obtain the image protection information.

[0035] Step A13: Sign the image protection information according to the encryption private key to obtain signature information.

[0036] It should be noted that the encryption private key refers to the key corresponding to the lighting control device and is used to generate a digital signature. The image protection information is encrypted using the encryption private key to generate a digital signature. In this embodiment, the signature information refers to the digital signature generated by encrypting the image protection information using the encryption private key. The signature information is used to verify the integrity and source of the image protection information.

[0037] Step A14: generating verification information corresponding to the image protection information according to the signature information and the information verification code.

[0038] It should be noted that the information verification code in this embodiment can be a hash value of the image protection information, which is used to verify the integrity of the data. The signature information and the information verification code are combined to obtain the verification information corresponding to the image protection information.

[0039] Step S20 : ​​Encode the image protection information and the verification information corresponding to the image protection information to generate encoded information.

[0040] It should be noted that the image protection information and the verification information corresponding to the image protection information are converted into a specific format for easy transmission and storage. The encoding process may utilize an encoding algorithm (e.g., Base64 encoding) to ensure that data is not lost or corrupted during transmission, ultimately generating the encoded information. In this embodiment, the encoding process specifically involves combining the image protection information and the verification information corresponding to the image protection information into a single, integrated data structure. The combined data is 16 bytes long, and the data is directly converted into a 128-bit binary string to generate the encoded information. In addition to the aforementioned encoding method, other encoding methods may also be employed, and this embodiment does not limit such methods.

[0041] Step S30: Control the infrared light source to send coded information of a target band, so that the wearable device that has collected the coded information limits an image collection function according to the coded information.

[0042] It should be noted that the infrared light source is controlled to transmit coded information in the target band, and the coded information is modulated into infrared light information and emitted through the infrared light source. The camera module of the wearable device collects information. When the wearable device collects the coded information, it decodes the coded information, restores the original image protection information and verification information, and verifies the authenticity and integrity of the coded information. When the verification is passed, the wearable device limits its own image acquisition function according to the image protection instructions in the coded information. In this embodiment, limiting its own image acquisition function includes but is not limited to the following methods: turning off the camera module, blurring the image, and other methods.

[0043] In a feasible implementation manner, the step S30 may further include steps B11 and B12: Step B11, determining a lighting control strategy based on the lighting brightness, flashing frequency, and information sending cycle.

[0044] Step B12: Control the infrared light source to send coded information of the target band according to the lighting control strategy.

[0045] It should be noted that light brightness refers to the luminous intensity of the infrared light source. The appropriate brightness can be selected according to the actual application scenario to ensure that the coded information can be reliably received by the wearable device, while avoiding excessive brightness causing interference to other devices or the environment; the flashing frequency refers to the number of times the infrared light source turns on and off per unit time. Selecting an appropriate flashing frequency can improve the reliability of information transmission while reducing energy consumption. The flashing frequency usually needs to match the receiving frequency of the wearable device to ensure that the information can be accurately captured; the information sending period refers to the time interval for the infrared light source to send a complete coded information. The selection of the sending period needs to consider the real-time nature and power consumption of information transmission.

[0046] It is understood that the preset light brightness, flicker frequency, and information transmission period are obtained, and a light control strategy for the infrared light source is generated based on the light brightness, flicker frequency, and information transmission period. The infrared light source is then controlled to transmit coded information in the target band according to the light control strategy. In this embodiment, the light brightness, flicker frequency, and information transmission period can be user-set parameters; alternatively, the light brightness, flicker frequency, and information transmission period set each time a coded message is transmitted within a historical time period can be obtained, and the corresponding average of multiple light brightness, flicker frequency, and information transmission periods is calculated to obtain the current light brightness, flicker frequency, and information transmission period.

[0047] This embodiment provides an image protection method, which is applied to a lighting control device, the lighting control device including an infrared light source configured to transmit coded information in a target wavelength band. The image protection method comprises: generating image protection information and verification information corresponding to the image protection information in response to an image playback instruction; encoding the image protection information and verification information corresponding to the image protection information to generate coded information; and controlling the infrared light source to transmit the coded information in the target wavelength band, so that a wearable device that has captured the coded information limits its image capture function according to the coded information. In this manner, during image playback, the lighting control device controls the infrared light source to transmit the coded information via an invisible light beam in the target wavelength band, and the wearable device limits its image capture function after capturing the coded information. This significantly prevents the use of the wearable device to illegally record protected video images, thereby achieving the purpose of preventing theaters from being screen-shot, protecting the copyright of film and television works, and reducing protection costs while maintaining high reliability.

[0048] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above embodiment 1 can be referred to the above introduction and will not be described in detail later. Figure 3 , Figure 3 This is a flow chart of the second embodiment of the image protection method of the present application.

[0049] In this embodiment, the image protection method is applied to a wearable device, wherein the wearable device includes a camera module, and the camera module is used to collect image information. The method includes steps S01 to S04: Step S01: extract information from the image information collected by the camera module to obtain coding information of the target band.

[0050] It should be noted that the execution subject of this embodiment is the wearable device in the image protection system. The image protection system includes a lighting control device and a wearable device. The lighting control device includes multiple infrared light sources for transmitting coded information in a target wavelength band. The wearable device includes a camera module for capturing image information. In this embodiment, the target wavelength band refers to an invisible infrared light beam band, such as 920nm infrared light. In this embodiment, the wearable device's camera module does not filter out infrared light in the target wavelength band.

[0051] It is understood that the camera module of the wearable device collects image information in real time and extracts the image information to obtain the coded information of the target band. In this embodiment, the coded information of the target band is transmitted by the lighting control device controlling the infrared light source. The coded information of the target band corresponds to the image protection information of the image to be protected and the verification information corresponding to the image protection information.

[0052] In a specific implementation, if the encoded information of the target band is not extracted from the image information within the preset duration, it indicates that there is no need to protect the image, and the wearable device does not limit its image acquisition function. In this embodiment, the preset duration can be set to 10 minutes, or it can be set as needed. This embodiment does not impose any restrictions on this.

[0053] Step S02: Decode the coded information to obtain image protection information and verification information corresponding to the image protection information.

[0054] It should be noted that the encoded information is decoded using a suitable decoding algorithm to convert the encoded information into the original image protection information and the verification information corresponding to the image protection information. In this embodiment, the image protection information includes but is not limited to the image protection instruction and the information timestamp when the image protection information is generated; the verification information corresponding to the image protection information includes the signature information and the information check code.

[0055] Step S03 : performing validity verification on the image protection information according to the verification information corresponding to the image protection information to obtain a validity verification result.

[0056] It should be noted that the image protection information is validated using the verification information corresponding to the image protection information to ensure its authenticity and integrity, thereby obtaining a validity verification result. If the authenticity and integrity verification of the image protection information passes, the validity verification result is considered valid; if the authenticity and integrity verification of the image protection information fails, the validity verification result is considered invalid.

[0057] In a feasible implementation manner, the step S03 may further include steps C11 to C15: Step C11 : determining signature information and information verification code according to verification information corresponding to the image protection information.

[0058] Step C12: performing a hash operation on the image protection information to generate a target hash value.

[0059] Step C13: Verify the target hash value according to the encrypted public key and the signature information to obtain a signature verification result.

[0060] Step C14: Compare the target hash value with the information check code to obtain a check code comparison result.

[0061] Step C15 , obtaining a validity verification result of the image protection information according to the signature verification result and the verification code comparison result.

[0062] It should be noted that the signature information and information check code are extracted from the verification information corresponding to the image protection information for use in subsequent verification steps. A hash function is used to calculate the image protection information to generate a target hash value. The encrypted public key used in pair with the encrypted private key is obtained and used to decrypt the signature information to obtain the original hash value. This is then compared with the target hash value to verify the validity of the signature information. If the original hash value and the target hash value are consistent, the signature verification result is a signature verification pass. If the original hash value and the target hash value are inconsistent, the signature verification result is a signature verification fail.

[0063] It can be understood that the wearable device compares the extracted information verification code with the target hash value. If the two are consistent, it means that the image protection information has not been modified during the transmission process, and the verification code comparison result is a consistent result; if the two are inconsistent, it means that the image protection information has been tampered with during the transmission process, and the verification code comparison result is an inconsistent result.

[0064] In a specific implementation, when the verification code comparison result is a consistent result and the signature verification result is a signature verification passed result, the validity check result is an information valid result; otherwise, the validity check result is an information invalid result.

[0065] Step S04: When the validity check result of the image protection information is a valid result, the image acquisition function of the camera module is restricted according to the image protection information.

[0066] It should be noted that when the validity check result of the image protection information is a valid result, the image acquisition function of the camera module is restricted according to the image protection instruction in the image protection information.

[0067] In a feasible implementation manner, the step S04 further includes steps D11 to D13: Step D11: parse the image protection information to determine the image protection instruction and information timestamp.

[0068] Step D12: performing a timeliness check on the image protection instruction according to the information timestamp and the current time, and determining a timeliness check result.

[0069] Step D13: When the timeliness check result is a preset result, the image acquisition function of the camera module is restricted according to the image protection instruction.

[0070] It should be noted that the image protection information is parsed, the image protection instruction and the information timestamp are separated from the image protection information, and the time difference between the current moment and the information timestamp is calculated. If the time difference is within the preset validity period, the time validity check result is a pass; if the time difference is not within the preset validity period, the time validity check result is a fail. In this embodiment, the validity period can be set as required. In this embodiment, the validity period is set to 1 minute.

[0071] It can be understood that when the timeliness check result is a timeliness check pass result, it means that the timeliness check result is a preset result. At this time, the image acquisition function of the camera module is restricted according to the image protection instruction.

[0072] In a feasible embodiment, the step of limiting the image acquisition function of the camera module according to the image protection information includes at least one of the following: shutting down the driver of the camera module according to the image protection information; obtaining a preset image according to the image protection information, and overwriting the image information captured by the camera module based on the preset image.

[0073] It should be noted that in this embodiment, the image acquisition function of the wearable device's camera module can be restricted by: disabling the camera module's driver based on image protection information, thereby preventing the camera module from operating normally; or obtaining a preset image based on the image protection information. In this embodiment, the preset image can be a completely black image or a mosaic image, and the preset image is used to overwrite the image information captured by the camera module, thereby restricting the camera module's image acquisition function. In addition to the above methods, other methods can also be used to restrict the camera module's image acquisition function, and this embodiment does not limit this.

[0074] This embodiment provides an image protection method, which is applied to a wearable device, wherein the wearable device includes a camera module, and the camera module is used to collect image information; the image protection method includes: extracting information from the image information collected by the camera module to obtain coding information of the target band; decoding the coding information to obtain image protection information and verification information corresponding to the image protection information; performing validity verification on the image protection information according to the verification information corresponding to the image protection information to obtain a validity verification result; when the validity verification result of the image protection information is a valid information result, limiting the image acquisition function of the camera module according to the image protection information. Through the above method, the use of wearable devices to illegally record video images that need to be protected is greatly prohibited, the purpose of preventing theaters from screen-shooting is achieved, the copyright of film and television works is protected, and protection costs are saved while having high reliability.

[0075] For example, in order to help understand the implementation process of the image protection method obtained by combining this embodiment with the above embodiment 1, please refer to Figure 4 , Figure 4 A brief flowchart of an image protection method is provided, specifically: This embodiment uses a lighting control device and a wearable device for cinema use as an example. 1. Determination of a "No Shooting" Protocol: The lighting control device and wearable device manufacturers must jointly determine the "No Shooting" protocol. For example, the "No Shooting" invisible light communication protocol (e.g., using 128-bit binary encoding), the cinema's signature authentication information, timeout mechanism, message transmission mechanism, and timestamp must be negotiated. Once this is determined, the cinema's lighting control device determines the infrared LED brightness, flashing frequency, and "No Shooting" message transmission period. The wearable device manufacturer implements invisible light communication using a camera module, identifies the "No Shooting" message, and implements camera module restrictions after identification. 2. While a film or television program is playing in the cinema, infrared LEDs surrounding the screen emit a pre-agreed "No Shooting" invisible light beam, which can be captured by the wearable device's camera module. 3. Because the wearable device's camera module doesn't filter out 920nm infrared light, it can capture the invisible light emitted by the infrared LED, modulating and decoding it. 4. After the wearable device modulates and decodes the invisible light information, it receives information such as "No Filming," the theater's authentication signature, and a timestamp. After verifying this information, the wearable device concludes that filming is prohibited and takes appropriate action to restrict the camera module's operation, thus achieving the theater's anti-filming screen function and protecting the copyright of film and television works.

[0076] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the image protection method of the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0077] This application also provides a lighting control device, please refer to Figure 5 , the lighting control device includes: The information generating module 10 is configured to respond to an image playing instruction and generate image protection information and verification information corresponding to the image protection information according to the image playing instruction.

[0078] The information generating module 10 is further configured to encode the image protection information and verification information corresponding to the image protection information to generate encoded information.

[0079] The light control module 20 is used to control the infrared light source to send the coded information through a light beam in a target band, so that the wearable device that collects the coded information limits the image acquisition function according to the coded information.

[0080] Optionally, the information generating module 10 is further configured to: Determine the external light intensity and weather type according to the current weather conditions; determine the severity of the weather according to the external light intensity and the weather type; determine that the fatigue detection result is a fatigue driving result when the user's monitored physiological indicators meet the fatigue judgment conditions corresponding to the severity of the weather; generate an image protection instruction and an information timestamp according to the image playback instruction; determine image protection information according to the image protection instruction and the information timestamp; sign the image protection information according to the encryption private key to obtain signature information; and generate verification information corresponding to the image protection information according to the signature information and the information check code.

[0081] Optionally, the lighting control module 20 is further configured to: A lighting control strategy is determined according to light brightness, flashing frequency, and information sending cycle; and the infrared light source is controlled to send coded information of a target band according to the lighting control strategy.

[0082] The lighting control device provided in this application, using the image protection method in the above-mentioned embodiment, can resolve the technical problem in the prior art of being unable to prohibit the use of wearable devices with camera functions to illegally record videos. Compared with the prior art, the beneficial effects of the lighting control device provided in this application are the same as those of the image protection method provided in the above-mentioned embodiment, and the other technical features of the lighting control device are the same as those disclosed in the above-mentioned embodiment method, which will not be repeated here.

[0083] This application also provides a wearable device, please refer to Figure 6 , the wearable device includes: The information extraction module 01 is used to extract information from the image information collected by the camera module to obtain the coding information of the target band.

[0084] The information decoding module 02 is configured to decode the coded information to obtain image protection information and verification information corresponding to the image protection information.

[0085] The information verification module 03 is configured to perform validity verification on the image protection information according to the verification information corresponding to the image protection information to obtain a validity verification result.

[0086] The function restriction module 04 is configured to restrict the image acquisition function of the camera module according to the image protection information when the validity check result of the image protection information is a valid result.

[0087] Optionally, the information verification module 03 is further configured to: Determine signature information and an information check code based on verification information corresponding to the image protection information; perform a hash operation on the image protection information to generate a target hash value; verify the target hash value based on the encrypted public key and the signature information to obtain a signature verification result; compare the target hash value with the information check code to obtain a check code comparison result; and obtain a validity verification result of the image protection information based on the signature verification result and the check code comparison result.

[0088] Optionally, the function restriction module 04 is further configured to: The image protection information is parsed to determine an image protection instruction and an information timestamp; a timeliness check is performed on the image protection instruction based on the information timestamp and the current moment to determine a timeliness check result; when the timeliness check result is a preset result, the image acquisition function of the camera module is limited according to the image protection instruction.

[0089] Optionally, the function restriction module 04 is further configured to: The driver of the camera module is closed according to the image protection information; a preset image is obtained according to the image protection information, and the image information collected by the camera module is overwritten based on the preset image.

[0090] The wearable device provided in this application, using the image protection method in the above-mentioned embodiment, can solve the technical problem in the prior art of being unable to prohibit the use of wearable devices with camera functions to illegally record videos. Compared with the prior art, the beneficial effects of the wearable device provided in this application are the same as those of the image protection method provided in the above-mentioned embodiment, and the other technical features of the wearable device are the same as those disclosed in the above-mentioned embodiment method, which will not be repeated here.

[0091] This application also provides an image protection system, such as Figure 7 As shown, it includes lighting control devices and wearable devices.

[0092] The image protection system provided by this application can solve the technical problem of the prior art that it is impossible to prohibit the use of wearable devices with camera functions to record videos illegally. Compared with the prior art, the beneficial effects of the image protection system provided by this application are the same as those of the image protection method provided by the above embodiment, and will not be repeated here.

[0093] The above description is only part of the embodiments of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. An image protection method, characterized in that: The image protection method is applied to a lighting control device, wherein the lighting control device includes an infrared light source, and the infrared light source is used to send coded information of a target band; The image protection method comprises: In response to an image playback instruction, generating image protection information and verification information corresponding to the image protection information according to the image playback instruction; Encoding the image protection information and verification information corresponding to the image protection information to generate coded information; The infrared light source is controlled to send coded information of a target band, so that a wearable device that has collected the coded information limits an image collection function according to the coded information.

2. The method according to claim 1, characterized in that The step of generating image protection information and verification information corresponding to the image protection information according to the image playback instruction comprises: Generate an image protection instruction and an information timestamp according to the image playback instruction; determining image protection information according to the image protection instruction and the information timestamp; Signing the image protection information according to the encrypted private key to obtain signature information; The verification information corresponding to the image protection information is generated according to the signature information and the information verification code.

3. The method according to claim 1, characterized in that The step of controlling the infrared light source to send coded information of the target band comprises: Determine the lighting control strategy based on lighting brightness, flashing frequency and information sending cycle; The infrared light source is controlled to send coded information of the target band according to the lighting control strategy.

4. An image protection method, characterized in that: The image protection method is applied to a wearable device, wherein the wearable device includes a camera module, and the camera module is used to collect image information; The image protection method comprises: Extracting information from the image information collected by the camera module to obtain coding information of the target band; Decoding the encoded information to obtain image protection information and verification information corresponding to the image protection information; Performing validity verification on the image protection information according to verification information corresponding to the image protection information to obtain a validity verification result; When the validity check result of the image protection information is an information validity result, the image acquisition function of the camera module is limited according to the image protection information.

5. The method according to claim 4, characterized in that The step of performing validity verification on the image protection information according to the verification information corresponding to the image protection information to obtain a validity verification result includes: Determine signature information and information verification code according to verification information corresponding to the image protection information; Performing a hash operation on the image protection information to generate a target hash value; Verify the target hash value according to the encrypted public key and the signature information to obtain a signature verification result; Compare the target hash value with the information check code to obtain a check code comparison result; The validity verification result of the image protection information is obtained according to the signature verification result and the verification code comparison result.

6. The method according to claim 4, characterized in that The step of limiting the image acquisition function of the camera module according to the image protection information includes: Parsing the image protection information to determine the image protection instruction and information timestamp; Performing a timeliness check on the image protection instruction according to the information timestamp and the current time, and determining a timeliness check result; When the timeliness check result is a preset result, the image acquisition function of the camera module is limited according to the image protection instruction.

7. The method according to any one of claims 4 to 6, characterized in that The step of limiting the image acquisition function of the camera module according to the image protection information includes at least one of the following: closing a driver of the camera module according to the image protection information; A preset image is acquired according to the image protection information, and content is overwritten on the image information collected by the camera module based on the preset image.

8. A lighting control device, characterized in that: The lighting control device comprises: An information generating module, configured to generate image protection information and verification information corresponding to the image protection information in response to an image playing instruction according to the image playing instruction; The information generating module is further used to encode the image protection information and the verification information corresponding to the image protection information to generate coded information; The light control module is used to control the infrared light source to send the coded information through a light beam in a target band, so that the wearable device that collects the coded information limits the image acquisition function according to the coded information.

9. A wearable device, characterized in that: The wearable device comprises: An information extraction module is used to extract information from the image information collected by the camera module to obtain coding information of the target band; An information decoding module, used to decode the coded information to obtain image protection information and verification information corresponding to the image protection information; An information verification module, used to perform validity verification on the image protection information according to verification information corresponding to the image protection information, and obtain a validity verification result; A function restriction module is used to restrict the image acquisition function of the camera module according to the image protection information when the validity check result of the image protection information is an information valid result.

10. An image protection system, characterized in that: The image protection system comprises the lighting control device as claimed in claim 8 and the wearable device as claimed in claim 9.

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