Intelligent glasses control method and system

Abstract

The invention provides an intelligent glasses control method and system, and the method comprises the steps: enabling an infrared transmitter installed on glasses to emit infrared light to a curtain, and enabling a controller installed on the glasses to judge the distance between the glasses and the curtain; if the distance meets a preset standard, a photographing device of the curtain collects a sitting posture image of the wearer, the photographing device judges that the sitting posture image is qualified, and a voice instruction for starting inspection is sent to a controller after the sitting posture image is qualified; the controller of the glasses receives a voice instruction and controls the instruction transmitter to specify a certain character in a vision examination table to start vision examination, and the projector projects the character to the curtain according to a character instruction sent by the instruction transmitter. The system comprises glasses, the controller, an infrared transmitter, an infrared receiver, a curtain, camera equipment, a brightness adjusting module, an instruction transmitter, a microphone, an eye movement tracker and a projector. The accuracy of vision examination results is guaranteed, and automation of vision examination is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vision examination devices, and particularly to an intelligent glasses control method and system. Background Art

[0002] The eyes are the windows of the soul and an important organ of the human body. If there are problems with the eyes, it will affect a person's mentality and mood. Therefore, it is crucial to pay attention to the eyesight. Currently, the general vision examination method requires the assistance of an examiner. By having the examined person judge the vision chart, the eyesight of the examined person is obtained. The operation is relatively complex, and due to human factors, it is very easy to lead to inaccurate examination results.

[0003] Prior art one: CN201910759510.X, a multifunctional glasses for vision testing, includes a spectacle frame and temple arms. The temple arms are rotatably connected to the spectacle frame. A connecting block is fixedly connected to the top of the spectacle frame. Both ends of the connecting block are fixedly connected with rotating shafts. A pinhole test lens and an eye shield are rotatably connected to the side wall of the rotating shaft. The eye shield is located above the pinhole test lens. The front and rear walls of the connecting block are both rotatably connected with disinfection shafts. The outer walls of the disinfection shafts are respectively fixedly connected with a front lens disinfection rotating rod and a rear lens disinfection rotating rod. A disinfection box is fixedly connected between the connecting blocks. A sealing plug is inserted into the top of the disinfection box. Absorbent cotton strips are filled in the middle of the disinfection box. A plurality of dense holes are provided on the side wall of the disinfection box. A disinfection sleeve is slidably connected to the side wall of the temple arm. Although the disinfection is fast and convenient, it can avoid the spread of red-eye virus and is safe to use. The alternation between pinhole testing and normal vision detection is convenient. However, when examining eyesight, it still requires the assistance of personnel, and the function is single, without achieving intelligence.

[0004] Prior art two: CN201710342636.8, a vision chart projection method based on VR technology and a VR glasses vision chart projector. The vision chart projection method includes the steps of: establishing a general international vision chart library in the VR system; establishing a functional relationship between each vision chart and the distance projected onto the VR display screen, and projecting it onto the VR display screen in the form of a slide; numbering each vision chart in the VR system, marking and controlling the playing state and playing speed of the vision chart; establishing multiple feedback options for each vision chart in the form of multiple-choice questions with weights for the user; further performing weighted statistical analysis based on the user's selected answers, and finally measuring the comprehensive detected eyesight of the user in the form of an overall score; outputting and saving the detection report. Although the method is simple, easy to implement, reliable and stable; the vision chart projector is lightweight, convenient, low-cost and easy to carry, but it does not really improve the effect of vision examination, and the VR glasses are relatively expensive, undoubtedly increasing the cost of the examination.

[0005] Prior Art Three, CN02822601.1 Vision Examination Device and Vision Examination Chart. The vision examination device (2) has a right-eye optical system (5r) for projecting a vision examination chart for the right eye and a left-eye optical system (5l) for projecting a vision examination chart for the left eye to examine the binocular vision function of the subject. The right-eye optical system and the left-eye optical system project the same fusion pattern to fuse the subject's two eyes. Although the accuracy of vision examination is improved, the overall device is complex and the usage cost is relatively high.

[0006] Currently, Prior Art One, Prior Art Two and Prior Art Three have the problems of single function and low intelligence level of glasses. Therefore, the present invention provides an intelligent glasses control method and system, which can realize vision examination through glasses, judge the sitting posture of the wearer, improve the accuracy of examination, set up functional modules to improve the intelligent control level, and further enhance the customer experience. Summary of the Invention

[0007] To solve the above technical problems, the present invention provides an intelligent glasses control method, which includes the following steps:

[0008] The infrared emitter installed on the glasses emits infrared light to the curtain, and the controller installed on the glasses judges the distance between the glasses and the curtain.

[0009] When the distance meets the preset standard, the photographic device on the curtain collects the sitting posture image of the wearer. After the photographic device judges that the sitting posture image is qualified, it sends a voice command to start the examination to the controller.

[0010] The controller of the glasses receives the voice command, controls the command transmitter to specify a certain character in the vision examination form to start the vision examination. The projector projects the character onto the curtain according to the character command sent by the command transmitter, and the controller judges according to the feedback voice of the wearer.

[0011] Optionally, the controller installed on the glasses judges the distance between the glasses and the curtain, including:

[0012] The controller obtains the initial parameters of the infrared emitter, and the initial parameters include the time point when the infrared emitter emits infrared light and the propagation speed of the infrared light.

[0013] The infrared receiver receives the infrared light reflected by the curtain and records the reflection time point.

[0014] The controller uses distance judgment to calculate the infrared light crossing time, obtains the distance between the glasses and the curtain. When the distance meets the preset standard, a qualified voice prompt is issued under the control of the controller; when the distance does not meet the preset standard, an unqualified voice prompt is issued under the control of the controller.

[0015] Optionally, the calculation process of the distance between the glasses and the curtain includes:

[0016] The controller subtracts the curtain reflection time point from the time point of emitting infrared light to obtain the infrared light transmission time;

[0017] The controller uses distance judgment and calculation, evenly divides the first time to obtain the intermediate value as the infrared light crossing time;

[0018] The controller multiplies the infrared light crossing time by the propagation speed of the infrared light to obtain the distance between the glasses and the curtain, and then compares it with the preset standard.

[0019] Optionally, the process of the photographic device judging that the sitting posture image is qualified includes:

[0020] The photographic device presets a qualified sitting posture, and the qualified sitting posture includes the horizontal connecting line segments of the edge points of the wearer's head, shoulders and legs;

[0021] Using the horizontal connecting edge points of the head, shoulders and legs as the elements to be matched in the sitting posture image, and judging whether the elements to be matched conform to the preset qualified sitting posture;

[0022] If the elements to be matched conform to the preset qualified sitting posture, the photographic device sends a voice command to start the inspection to the controller;

[0023] If the elements to be matched do not conform to the preset qualified sitting posture, the curtain emits a voice prompt to remind the wearer to adjust the sitting posture.

[0024] Optionally, the process of processing the edge points of the sitting posture image includes:

[0025] The photographic device performs smoothing processing on the sitting posture image, then calculates the gradient value and gradient direction of each pixel point of the smoothed sitting posture image, and uses the partial derivative of the second-order Gaussian operator to calculate the gradient map of the sitting posture image;

[0026] Perform maximum value suppression processing on the gradient map, only retain the one with the maximum edge intensity of the current pixel point, and connect each pixel point to obtain the edge information map of the sitting posture image;

[0027] Denoise the edge information map to obtain the denoised sitting posture image.

[0028] Optionally, the control process of the character command includes:

[0029] The command transmitter installed on the glasses sends commands to the projector in the preset character order, and the commands include the number of rows and columns of the specified characters;

[0030] The projector receives the number of rows and columns of the specified characters and projects them onto the curtain, and the background light of the curtain lights up;

[0031] The orientation for the wearer to read characters, the microphone of the glasses collects the feedback voice of the wearer, the feedback voice is sent to the controller, and the controller compares the feedback voice with the character voice preset for the specified character;

[0032] According to the preset inspection procedure, the controller controls the instruction transmitter to judge the next character. When the standard for outputting the vision inspection result is reached, the controller outputs the vision inspection result.

[0033] Optionally, the process of adjusting the brightness of the backlight includes:

[0034] Adjust the brightness of the backlight to a fixed percentage value, and the fixed percentage value is preset;

[0035] Obtain the corresponding brightness adjustment change amount according to the change value of the pupil diameter of the wearer obtained by the eye tracker;

[0036] Obtain the corresponding brightness adjustment change amount according to the change value of the pupil diameter and the quantified value of the ambient light brightness detected by the photosensitive sensor;

[0037] Adjust the brightness of the backlight according to the brightness adjustment change amount.

[0038] An intelligent glasses control system provided by the present invention includes: glasses, a controller, an infrared transmitter, an infrared receiver, a curtain, a photographic device, a brightness adjustment module, an instruction transmitter, a microphone, an eye tracker, and a projector;

[0039] The controller, the infrared transmitter, the infrared receiver, the eye tracker, the microphone, and the instruction transmitter are installed on the glasses, and the photographic device and the brightness adjustment module are installed on the curtain; the glasses are wirelessly connected to the curtain through the controller and the instruction transmitter; the instruction transmitter is connected to the projector, and the projector projects the characters onto the curtain according to the character instructions sent by the instruction transmitter;

[0040] The controller is connected to the infrared transmitter, the infrared receiver, the eye tracker, the instruction transmitter, the microphone, and the photographic device; the eye tracker is wirelessly connected to the brightness adjustment module.

[0041] Optionally, the photographic device includes:

[0042] An edge point processing module, responsible for presetting a qualified sitting posture, and the qualified sitting posture includes the horizontal connecting line segments of the edge points of the wearer's head, shoulders, and legs;

[0043] A sitting posture judgment module, responsible for using the horizontal connecting edge points of the head, shoulders, and legs as the elements to be matched in the sitting posture image, and judging whether the elements to be matched conform to the preset qualified sitting posture;

[0044] The voice prompt module is responsible for issuing a voice command to start the inspection when the element to be matched meets the preset qualified sitting posture; when the element to be matched does not meet the preset qualified sitting posture, it issues a voice prompt to remind the wearer to adjust the sitting posture.

[0045] Optionally, the brightness adjustment module further includes: a backlight and a photosensitive sensor;

[0046] The screen is connected to the photosensitive sensor and the backlight.

[0047] First, the infrared emitter installed on the glasses of the present invention emits infrared light to the screen, and the controller installed on the glasses judges the distance between the glasses and the screen; secondly, when the distance meets the preset standard, the photographic device on the screen collects the sitting posture image of the wearer, and the photographic device judges that the sitting posture image is qualified, and after qualification, it issues a voice command to start the inspection to the controller; finally, the controller of the glasses receives the voice command, controls the command transmitter to specify a certain character in the visual acuity chart to start the visual acuity inspection, and the projector projects the character onto the screen according to the character command issued by the command transmitter, and the controller judges according to the feedback voice of the wearer. In this embodiment, the measurement of the distance between the glasses wearer and the screen is realized through the cooperation of the infrared emitter and the infrared receiver. Generally, a distance of 5 meters is required, and the distance standard is preset in the controller. The content of the visual acuity chart is stored in the command transmitter. The visual acuity chart can use E or C. The determination of the distance improves the accuracy of the visual acuity inspection result; the photographic device judges whether the sitting posture image is qualified. Since the sitting posture of the wearer will have a certain impact on the visual acuity inspection result, sometimes it will cause the distance to be too far or too tight. Judging the sitting posture in combination with the distance judgment is to ensure the accuracy of the visual acuity inspection result; after the sitting posture and distance are qualified, the visual acuity inspection starts. The command transmitter installed on the glasses specifies a certain character in the visual acuity chart, and the projector projects the character onto the screen according to the character command issued by the command transmitter, further improving the accuracy of the visual acuity inspection result. In addition, through the command transmitter, the cooperation of the inspection personnel is not required, which saves time and effort; when the wearer says the orientation of the character, the microphone of the controller collects the feedback voice and compares it with the preset voice of the character, and then identifies the following characters according to the preset program; through the above scheme, the automation of the visual acuity inspection is realized, and through the intelligent setting of the glasses function, the autonomous inspection is realized, and the accuracy of the visual acuity inspection is improved.

[0048] Other features and advantages of the present invention will be described in the subsequent specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structure specifically pointed out in the written specification and the drawings.

[0049] The technical solutions of the present invention will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0050] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the accompanying drawings:

[0051] Figure 1 is a flowchart of the intelligent glasses control method in Embodiment 1 of the present invention;

[0052] Figure 2 is a flowchart of determining the distance between the curtain judgment glasses and the curtain in Embodiment 2 of the present invention;

[0053] Figure 3 is a process diagram of calculating the distance between the glasses and the curtain in Embodiment 3 of the present invention;

[0054] Figure 4 is a process diagram of the photographic device determining that the sitting posture image is qualified in Embodiment 4 of the present invention;

[0055] Figure 5 is a process diagram of processing the edge points of the sitting posture image in Embodiment 5 of the present invention;

[0056] Figure 6 is a process diagram of controlling the character instruction in Embodiment 7 of the present invention;

[0057] Figure 7 is a process diagram of adjusting the brightness of the background light in Embodiment 8 of the present invention;

[0058] Figure 8 is a block diagram of the intelligent glasses control system in Embodiment 9 of the present invention;

[0059] Figure 9 is a block diagram of the photographic device in Embodiment 10 of the present invention;

[0060] Figure 10 is a block diagram of the control principle of the brightness adjustment module in Embodiment 11 of the present invention. Detailed implementation manners

[0061] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0062] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present application. The singular forms "a", "said", and "the" used in the embodiments of the present application are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0063] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed. The specific meanings in the claims.

[0064] Embodiment 1

[0065] As Figure 1 shown, an embodiment of the present invention provides an intelligent glasses control method, including the following steps:

[0066] S100: The infrared emitter installed on the glasses emits infrared light to the curtain, and the controller installed on the glasses judges the distance between the glasses and the curtain;

[0067] S200: When the distance meets the preset standard, the photographic device on the curtain collects the sitting posture image of the wearer, and the photographic device judges that the sitting posture image is qualified. After qualification, a voice command to start the inspection is sent to the controller;

[0068] S300: The controller of the glasses receives the voice command, controls the command transmitter to specify a certain character in the visual acuity chart to start the visual acuity inspection. The projector projects the character onto the curtain according to the character command sent by the command transmitter, and the controller judges according to the feedback voice of the wearer.

[0069] The working principle and beneficial effects of the above technical solution are as follows: First, the infrared emitter installed on the glasses emits infrared light to the curtain, and the controller installed on the glasses judges the distance between the glasses and the curtain; Second, when the distance meets the preset standard, the photographic device on the curtain collects the sitting posture image of the wearer, and the photographic device judges that the sitting posture image is qualified. After passing the judgment, a voice command to start the inspection is sent to the controller; Finally, the controller of the glasses receives the voice command, controls the command transmitter to specify a certain character in the visual acuity chart to start the visual acuity inspection. The projector projects the character onto the curtain according to the character command sent by the command transmitter, and the controller judges according to the feedback voice of the wearer. In this embodiment, the cooperation between the infrared emitter and the infrared receiver realizes the measurement of the distance between the glasses wearer and the curtain. Generally, a distance of 5 meters is required, and the distance standard is preset in the controller. The content of the visual acuity chart is stored in the command transmitter. The visual acuity chart can use E or C. The judgment of the distance improves the accuracy of the visual acuity inspection result; by using the photographic device to judge whether the sitting posture image is qualified, since the sitting posture of the wearer will have a certain impact on the visual acuity inspection result, sometimes it will cause the distance to be too far or too tight. Judging the sitting posture and the distance together is to ensure the accuracy of the visual acuity inspection result; after the sitting posture and the distance are qualified, the visual acuity inspection starts. The command transmitter installed on the glasses specifies a certain character in the visual acuity chart, and the projector projects the character onto the curtain according to the character command sent by the command transmitter, further improving the accuracy of the visual acuity inspection result. In addition, through the command transmitter, the cooperation of the inspectors is not required, which saves time and effort; when the wearer says the orientation of the character, the microphone of the controller collects the feedback voice and compares it with the preset voice of the character, and then identifies the following characters according to the preset program; through the above solution, the automation of the visual acuity inspection is realized, and through the intelligent setting of the functions of the glasses, the self-inspection is realized, and the accuracy of the visual acuity inspection is improved.

[0070] Embodiment 2

[0071] As Figure 2 shown, on the basis of Embodiment 1, the process by which the controller installed on the glasses of the present invention embodiment judges the distance between the glasses and the curtain includes:

[0072] S101: The controller obtains the initial parameters of the infrared emitter, and the initial parameters include the time point when the infrared emitter emits infrared light and the propagation speed of the infrared light;

[0073] S102: The infrared receiver receives the infrared light reflected by the curtain and records the reflection time point;

[0074] S103: The controller uses distance judgment to calculate the infrared light transit time, obtains the distance between the glasses and the curtain. When the distance meets the preset standard, a qualified voice prompt is issued under the control of the controller. When the distance does not meet the preset standard, an unqualified voice prompt is issued under the control of the controller.

[0075] The working principle and beneficial effects of the above technical solution are as follows: In this embodiment, the controller first obtains the initial parameters of the infrared emitter. The initial parameters include the time point when the infrared emitter emits infrared light and the propagation speed of the infrared light. Secondly, the infrared receiver receives the infrared light reflected by the curtain and records the reflection time point. Finally, the controller uses distance judgment to calculate the infrared light transit time, obtains the distance between the glasses and the curtain. If the distance meets the preset standard, a qualified voice prompt is issued under the control of the controller; if the distance does not meet the preset standard, an unqualified voice prompt is issued under the control of the controller. The preset standard is generally set to 5 meters, and it can also be set according to specific circumstances. In the above solution, a controller is installed on the glasses. The controller controls the infrared emitter to emit infrared light, and uses the characteristics of safety and convenience of infrared light to measure the distance between the glasses and the curtain to determine whether the distance between the glasses and the curtain meets the standard. When the infrared light reaches the curtain and is reflected to the infrared receiver controlled by the controller, by calculating the time points of emitting and reflecting the infrared light, the transmission time of the infrared light is obtained. Through the preset infrared light transmission time, the distance between the glasses and the curtain is obtained. The calculation method is simple and convenient, can achieve fast response, and improves the speed of vision inspection.

[0076] Embodiment 3

[0077] As Figure 3 shown, on the basis of Embodiment 2, the process of calculating the distance between the glasses and the curtain provided by the embodiment of the present invention includes:

[0078] S1031: The controller subtracts the curtain reflection time point from the time point of emitting the infrared light to obtain the infrared light transmission time;

[0079] S1032: The controller uses distance judgment to calculate, and evenly divides the first time to obtain the intermediate value as the infrared light transit time;

[0080] S1033: The controller multiplies the infrared light transit time by the propagation speed of the infrared light to obtain the distance between the glasses and the curtain, and then compares it with the preset standard.

[0081] The working principle and beneficial effects of the above technical solution are as follows: In this embodiment, first, the controller calculates the difference between the curtain reflection time point and the time point of emitting infrared light to obtain the infrared light transmission time; secondly, the controller uses distance judgment and calculation to evenly divide the first time to obtain the intermediate value as the infrared light crossing time; finally, the controller multiplies the infrared light crossing time by the propagation speed of the infrared light to obtain the distance between the glasses and the curtain, and then compares it with the preset standard; the above solution uses the product of speed and time to obtain the distance between the glasses and the curtain, improving the operation efficiency of the controller, and the collected data is relatively simple, reducing the complexity of the algorithm and the R & D costs of related devices and programs, which is conducive to reducing the price of vision inspection, better benefiting patients and reducing the economic pressure on patients.

[0082] Embodiment 4

[0083] As Figure 4 shown, on the basis of Embodiment 1, the process for the photographic device provided by the embodiment of the present invention to determine that the sitting posture image is qualified includes:

[0084] S201: The photographic device presets a qualified sitting posture, and the qualified sitting posture includes a line segment connecting the lateral edges of the head, shoulders, and legs of the wearer;

[0085] S202: Using the lateral edges of the head, shoulders, and legs as the elements to be matched in the sitting posture image, determine whether the elements to be matched conform to the preset qualified sitting posture;

[0086] S203: When the elements to be matched conform to the preset qualified sitting posture, the photographic device sends a voice command to start the inspection to the controller;

[0087] S204: When the elements to be matched do not conform to the preset qualified sitting posture, the curtain emits a voice prompt to remind the wearer to adjust the sitting posture.

[0088] The working principle and beneficial effects of the above technical solution are as follows: In this embodiment, the photographic device first presets a qualified sitting posture, and the qualified sitting posture includes a line segment formed by horizontally connecting the edge points of a person's head, shoulders, and legs. Secondly, the sitting posture image is horizontally connected by the edge points of the head, shoulders, and legs to form an element to be matched, and it is judged whether the element to be matched conforms to the preset qualified sitting posture. Then, if the element to be matched conforms to the preset qualified sitting posture, the photographic device issues a voice command to start the inspection. Finally, if the element to be matched does not conform to the preset qualified sitting posture, the photographic device issues a voice prompt to remind the wearer to adjust the sitting posture. The above solution provides a reference basis for whether the wearer's sitting posture meets the standard of vision inspection by presetting a qualified sitting posture, and directly improves the accuracy of the vision inspection result. The qualified sitting posture judges the wearer's head, shoulders, and legs, and horizontally connects the edge points of each part to form a line segment of the horizontal connection of the respective key edge points, so as to determine whether the head, shoulders, or legs are correct. Which edge points to select and how many to select are set by the operator according to the actual situation, and the vision inspection is carried out after the sitting posture is qualified.

[0089] Embodiment 5

[0090] As Figure 5 shown, on the basis of Embodiment 4, the process of processing the edge points of the sitting posture image provided by the embodiment of the present invention includes:

[0091] S2021: The photographic device performs smoothing processing on the sitting posture image, and then calculates the gradient value and gradient direction of each pixel point of the smoothed sitting posture image, and obtains the gradient map of the sitting posture image by calculating the partial derivative of the second-order Gaussian operator.

[0092] S2022: Perform maximum suppression processing on the gradient map, and only retain the one with the maximum edge intensity of the current pixel point. Each pixel point is connected to obtain the edge information map of the sitting posture image.

[0093] S2023: Denoise the edge information map to obtain the denoised sitting posture image.

[0094] The working principle and beneficial effects of the above technical solution are as follows: In this embodiment, the photographic device first performs smoothing processing on the sitting posture image, and then calculates the gradient value and gradient direction of each pixel point on the smoothed sitting posture image, and uses the partial derivative of the second-order Gaussian operator to calculate the gradient map of the sitting posture image; secondly, perform maximum suppression processing on the gradient map, only retain the one with the largest edge intensity of the current pixel point, and connect each pixel point to obtain the edge information map of the sitting posture image; finally, perform noise reduction on the edge information map to obtain the denoised sitting posture image; the above solution realizes clear edge point acquisition of the images of the head, shoulders and legs by performing smoothing processing on the sitting posture image, obtaining the gradient map, and obtaining the edge information map of the sitting posture image, ensuring the accuracy and precision of the edge points, and the to-be-matched elements obtained by connecting each edge point are also accurate. It not only makes up for the blank of the lack of sitting posture judgment in vision inspection, but also enables the wearer of glasses to conduct professional vision inspection without the examiner, ensuring the accuracy of the vision inspection results, and at the same time helping to improve the customer experience of the curtain and glasses.

[0095] Embodiment 6

[0096] Based on Embodiment 5, the threshold function expression used for denoising the edge information map provided by the embodiment of the present invention is:

[0097]

[0098] where y m,n represents the output value of the threshold function, m represents the abscissa of the pixel point, n represents the ordinate of the pixel point, sign(m,n) represents taking the coordinates m and n of the pixel point, x m,n represents the unprocessed edge information map, t represents the sampling moment of the sitting posture image, k represents the threshold value in the threshold function, and e represents the natural constant.

[0099] The working principle and beneficial effects of the above technical solution are as follows: The denoising of the edge information map in this embodiment uses a threshold function to obtain the denoised sitting posture image. Due to many objective factors in the acquisition process of the sitting posture image, it is easy to cause inaccurate acquisition of the sitting posture image. The above solution improves the acquisition quality of the sitting posture image through threshold function denoising, which is beneficial to improving the accuracy of the vision inspection results and provides a hardware basis for realizing the wearer's self-inspection of vision.

[0100] Embodiment 7

[0101] As Figure 6 shown, based on Embodiment 1, the control process of the character instruction provided by the embodiment of the present invention includes:

[0102] S301: The instruction transmitter installed on the glasses sends instructions to the projector according to the preset character order, and the instructions include the number of rows and columns of the specified characters;

[0103] S302: The projector projects the received number of rows and columns of the specified character onto the screen, and the background light of the screen lights up.

[0104] S303: The wearer reads the orientation of the character, and the microphone of the glasses collects the feedback voice of the wearer. The feedback voice is sent to the controller, and the controller compares the feedback voice with the character voice preset for the specified character.

[0105] S304: The controller controls the instruction transmitter to judge the next character according to the preset inspection procedure. When the standard for outputting the vision inspection result is reached, the controller outputs the vision inspection result.

[0106] The working principle and beneficial effects of the above technical solution are as follows: In this embodiment, first, the instruction transmitter installed on the glasses sends instructions to the projector according to the preset character order, and the instructions include the number of rows and columns of the specified character. The projector projects the received number of rows and columns of the specified character onto the screen, and the background light of the screen lights up. The wearer reads the orientation of the character, and the microphone of the glasses collects the feedback voice of the wearer. The feedback voice is sent to the controller, and the controller compares the feedback voice with the character voice preset for the specified character. The controller controls the instruction transmitter to judge the next character according to the preset inspection procedure. When the standard for outputting the vision inspection result is reached, the controller outputs the vision inspection result. In the above solution, the specified character is judged by the wearer through the instruction transmitter, eliminating the need for the configuration of inspectors and making the vision inspection time-saving and labor-saving. The setting of the background light reduces the interference to the wearer and helps to improve the inspection efficiency. The brightness of the background light here is the standard brightness in vision inspection and will not affect the accuracy of the vision inspection result. The controller improves the comparison efficiency of the feedback voice through voice comparison, does not need to change the voice signal anymore, and reduces the input cost to a certain extent. The preset inspection procedure can be carried out according to the normal vision inspection process, and the operator can also set it according to the specific situation.

[0107] Embodiment 8

[0108] As Figure 7 shown, on the basis of Embodiment 7, the process of adjusting the brightness of the background light provided by the embodiment of the present invention includes:

[0109] S3021: Adjust the brightness of the background light to a fixed percentage value, and the fixed percentage value is preset.

[0110] S3022: Obtain the corresponding brightness adjustment change amount according to the change value of the pupil diameter of the wearer obtained by the eye tracker.

[0111] S3023: Obtain the corresponding brightness adjustment change amount according to the change value of the pupil diameter and the quantization value of the ambient light brightness detected by the photosensitive sensor.

[0112] S3024: Adjust the brightness of the backlight according to the change amount of brightness adjustment.

[0113] The working principle and beneficial effects of the above technical solution are as follows: First, adjust the brightness of the backlight to a fixed percentage value, and the fixed percentage value is preset; Secondly, obtain the corresponding brightness adjustment change amount according to the change value of the pupil diameter of the wearer obtained by the eye tracker; Then, obtain the corresponding brightness adjustment change amount according to the change value of the pupil diameter and the quantified value of the ambient light brightness detected by the photosensitive sensor; Finally, adjust the brightness of the backlight according to the brightness adjustment change amount; The brightness adjustment change amount is obtained through the eye tracker and the photosensitive sensor, realizing the automatic adjustment of the brightness of the backlight, making the brightness not only adapt to the glasses of the wearer, but also adapt to the environment. Through adjustment, it is easy to meet the lighting standard in vision inspection. The automatic adjustment of the brightness of the backlight improves the automation control level of the curtain, and at the same time provides a good hardware environment for vision inspection.

[0114] Embodiment 9

[0115] As Figure 8 shown, on the basis of Embodiments 1 - 8, the intelligent glasses control system provided by the embodiment of the present invention includes: glasses, a controller, an infrared emitter, an infrared receiver, a curtain, a photographic device, a brightness adjustment module, a command sender, a microphone, an eye tracker, and a projector;

[0116] The controller, infrared emitter, infrared receiver, eye tracker, microphone, and command sender are installed on the glasses, and the photographic device and brightness adjustment module are installed on the curtain; The glasses are wirelessly connected to the curtain through the controller and the command sender; The command sender is connected to the projector, and the projector projects characters onto the curtain according to the character commands sent by the command sender;

[0117] The controller is connected to the infrared emitter, infrared receiver, eye tracker, command sender, microphone, and photographic device; The eye tracker is wirelessly connected to the brightness adjustment module.

[0118] The working principle and beneficial effects of the above technical solution are as follows: The infrared emitter installed on the glasses emits infrared light towards the curtain. The infrared receiver receives the infrared light reflected by the curtain, and the controller determines the distance between the glasses and the curtain. When the distance meets the preset standard, the controller issues a control instruction for the photographic device to collect the sitting posture image of the wearer. The photographic device determines that the sitting posture image is qualified and issues an instruction to start the vision examination after qualification. The instruction sender receives the instruction, designates a certain character in the vision test chart to start the vision examination. The projector receives the character instruction sent by the instruction sender and projects the character onto the curtain. The microphone receives the voice feedback from the wearer, and the controller makes a judgment based on the voice feedback of the wearer. The controller calculates the infrared light penetration time through distance judgment to obtain the distance between the glasses and the curtain. When the distance meets the preset standard, a qualified voice prompt is issued under the control of the controller. When the distance does not meet the preset standard, an unqualified voice prompt is issued under the control of the controller. The eye tracker obtains the change value of the pupil diameter of the wearer to adjust the brightness of the curtain, protecting the wearer's vision to the greatest extent. The distance between the glasses wearer and the curtain is realized through the cooperation of the infrared emitter and the infrared receiver, and the determination of the distance improves the accuracy of the vision examination result. The sitting posture of the wearer will have a certain impact on the vision examination result, sometimes resulting in a too far or too tight distance. Judging the sitting posture and the distance together are both to ensure the accuracy of the vision examination result. After the sitting posture and distance are qualified, the vision examination starts. In addition, through the instruction sender, the cooperation of the examiner is not required, saving time and effort. When the wearer states the orientation of the character, the microphone on the glasses collects the feedback voice and compares it with the preset voice of the character, and then identifies the following characters according to the preset program.

[0119] Embodiment 10

[0120] As Figure 9 shown, on the basis of Embodiment 8, the photographic device provided by the embodiment of the present invention includes:

[0121] An edge point processing module, responsible for presetting a qualified sitting posture, and the qualified sitting posture includes a horizontally connected line segment of the edge points of the wearer's head, shoulders, and legs;

[0122] A sitting posture judgment module, responsible for using the edge points of the head, shoulders, and legs horizontally connected to form the elements to be matched in the sitting posture image, and judging whether the elements to be matched conform to the preset qualified sitting posture;

[0123] A voice prompt module, responsible for issuing a voice instruction to start the examination when the elements to be matched conform to the preset qualified sitting posture; when the elements to be matched do not conform to the preset qualified sitting posture, issuing a voice prompt to remind the wearer to adjust the sitting posture.

[0124] The working principle and beneficial effects of the above technical solution are as follows: The edge point processing module presets a qualified sitting posture, and the qualified sitting posture includes a line segment formed by horizontally connecting the edge points of the wearer's head, shoulders, and legs; the sitting posture judgment module uses the edge points of the head, shoulders, and legs horizontally connected to form the elements to be matched in the sitting posture image, and judges whether the elements to be matched conform to the preset qualified sitting posture; the voice prompt module issues a voice command to start the inspection when the elements to be matched conform to the preset qualified sitting posture; when the elements to be matched do not conform to the preset qualified sitting posture, it issues a voice prompt to remind the wearer to adjust the sitting posture; by presetting the qualified sitting posture, a reference basis is provided for whether the wearer's sitting posture meets the standards of vision inspection, directly improving the accuracy of the vision inspection results; the qualified sitting posture judges the wearer's head, shoulders, and legs, and uses the horizontal connection of the edge points of each part to form a line segment of the horizontal connection of the respective key edge points, so as to determine whether the head, shoulders, or legs are correct. Which edge points to select and how many to select are set by the operator according to the actual situation, and the vision inspection is carried out after the sitting posture is qualified.

[0125] Embodiment 11

[0126] As Figure 10 shown, on the basis of Embodiment 9, the brightness adjustment module provided by the embodiment of the present invention further includes: a background light and a photosensitive sensor;

[0127] The curtain is connected to the photosensitive sensor and the background light.

[0128] The working principle and beneficial effects of the above technical solution are as follows: Adjust the brightness of the background light by the curtain to a fixed percentage value, and the fixed percentage value is preset; obtain the corresponding brightness adjustment change amount according to the change value of the pupil diameter of the wearer obtained by the eye tracker; obtain the corresponding brightness adjustment change amount according to the change value of the pupil diameter and the quantization value of the ambient light brightness detected by the photosensitive sensor; the curtain adjusts the brightness of the background light according to the brightness adjustment change amount. By obtaining the brightness adjustment change amount through the eye tracker and the photosensitive sensor, the brightness of the background light is automatically adjusted, so that the brightness not only adapts to the wearer's glasses, but also adapts to the environment. Through adjustment, it is easy to meet the lighting standards in vision inspection. The automatic adjustment of the brightness of the background light improves the automation control level of the curtain and provides a good hardware environment for vision inspection.

[0129] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the present invention and its equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A smart glasses control method, characterized in that: The following steps are involved: The infrared transmitter installed on the glasses emits infrared light to the screen, and the controller installed on the glasses determines the distance between the glasses and the screen; If the distance meets the preset standard, the camera of the screen collects the sitting image of the wearer, and the camera determines that the sitting image is qualified. If it is qualified, it sends a voice command to the controller to start the inspection; The controller of the glasses receives the voice command, and the control command transmitter specifies a character in the vision test chart to start the vision test. The projector projects the character onto the screen according to the character command sent by the command transmitter, and the controller makes a judgment based on the wearer's feedback voice.

2. The smart glasses control method according to claim 1, characterized in that: The controller installed on the glasses determines the distance between the glasses and the screen, including: The controller obtains initial parameters of the infrared transmitter, which include the time point when the infrared transmitter emits infrared light and the propagation speed of the infrared light; The infrared receiver receives the infrared light reflected by the curtain and records the time of reflection; The controller uses distance judgment to calculate the infrared light crossing time and obtain the distance between the glasses and the screen. If the distance meets the preset standard, a qualified voice prompt will be issued under the control of the controller. If the distance does not meet the preset standard, an unqualified voice prompt will be issued under the control of the controller.

3. The smart glasses control method according to claim 2, characterized in that: The calculation process of the distance between the glasses and the screen includes: The controller subtracts the time point of the curtain reflection from the time point of the infrared light emission to obtain the infrared light transmission time; The controller uses distance judgment and calculation to divide the first time evenly and obtain the middle value as the infrared light crossing time; The controller multiplies the infrared light's transit time by the infrared light's propagation speed to get the distance between the glasses and the screen, and then compares it with the preset standard.

4. The smart glasses control method according to claim 1, characterized in that: The process of the camera judging whether the sitting posture image is qualified includes: The camera device presets a qualified sitting posture, and the qualified sitting posture includes a line segment connecting the edge points of the wearer's head, shoulders and legs in a transverse direction; Connect the edge points of the head, shoulders and legs horizontally to form the elements to be matched in the sitting posture image, and judge whether the elements to be matched meet the preset qualified sitting posture; When the element to be matched meets the preset qualified sitting posture, the camera device sends a voice command to start the inspection to the controller; If the element to be matched does not meet the preset qualified sitting posture, the curtain will issue a voice prompt to remind the wearer to adjust the sitting posture.

5. The smart glasses control method according to claim 4, characterized in that: The processing process of edge points of sitting posture images includes: The camera performs smoothing on the sitting image, and then calculates the gradient value and gradient direction of each pixel point of the smoothed sitting image, and uses the partial derivative of the second-order Gaussian operator to calculate the gradient map of the sitting image; Perform maximum value suppression on the gradient map, and only retain the pixel with the largest edge strength. Connect the pixels to obtain the edge information map of the sitting image. The edge information map is denoised to obtain a denoised sitting image.

6. The smart glasses control method according to claim 1, characterized in that: The control process of character instructions includes: The command transmitter installed on the glasses sends a command to the projector according to the preset character sequence, and the command includes the number of rows and columns of the specified characters; The projector receives the row and column numbers of the specified characters and projects them onto the screen, and the background light of the screen lights up; The wearer reads the character in the direction in which it is facing, and the glasses' microphone collects the wearer's voice feedback, which is sent to the controller, which compares the feedback voice with the preset character voice of the specified character; The controller controls the instruction transmitter to judge the next character according to the preset inspection program, and when the standard for outputting the vision inspection result is reached, the controller outputs the vision inspection result.

7. The smart glasses control method according to claim 6, characterized in that: The process of adjusting the brightness of the background light includes: Adjust the brightness of the background light to a fixed percentage value, which is preset; Obtaining a corresponding brightness adjustment change according to the wearer's pupil diameter change value obtained by the eye tracker; Obtaining a corresponding brightness adjustment change according to the pupil diameter change value and the ambient light brightness quantization value detected by the photosensitive sensor; Adjust the brightness of the backlight according to the brightness adjustment change.

8. A smart glasses control system, characterized in that: include: Glasses, controller, infrared transmitter, infrared receiver, screen, camera, brightness adjustment module, command transmitter, microphone, eye tracker and projector; The glasses are equipped with a controller, an infrared transmitter, an infrared receiver, an eye tracker, a microphone and a command transmitter, and the screen is equipped with a camera and a brightness adjustment module; the glasses are wirelessly connected to the screen through the controller and the command transmitter; the command transmitter is connected to the projector, and the projector projects characters onto the screen according to the character commands sent by the command transmitter; The controller is connected with the infrared transmitter, the infrared receiver, the eye tracker, the command transmitter, the microphone and the camera; the eye tracker is wirelessly connected with the brightness adjustment module.

9. The smart glasses control system according to claim 8, characterized in that: Photographic equipment, including: The edge point processing module is responsible for presetting a qualified sitting posture, which includes the horizontally connected line segments of the edge points of the wearer's head, shoulders and legs; The sitting posture judgment module is responsible for horizontally connecting the edge points of the head, shoulders and legs to form the elements to be matched in the sitting posture image, and judging whether the elements to be matched meet the preset qualified sitting posture; The voice prompt module is responsible for issuing a voice instruction to start the check when the matching element meets the preset qualified sitting posture; if the matching element does not meet the preset qualified sitting posture, it will issue a voice prompt to prompt the wearer to adjust the sitting posture.

10. The smart glasses control system according to claim 8, characterized in that: The brightness adjustment module also includes: a background light and a photosensitive sensor; The curtain is connected with the photosensitive sensor and the background light.

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