Picture card testing device and picture card testing method based on the picture card testing device

Abstract

The present application discloses a chart test device and a chart test method based on the chart test device, the device comprising: a tripod provided with a moving mechanism, a telescopic mechanism and an angle adjustment component; a rangefinder mounted on the angle adjustment component; a camera for acquiring a test image, mounted on the angle adjustment component, and having a shooting direction parallel to the ranging direction of the rangefinder; an information input component for acquiring test parameters, the test parameters including a shooting distance and a viewing angle parameter; an operation component for adjusting the posture of the tripod according to the shooting distance and the measurement result of the rangefinder, so that the shooting direction of the camera is perpendicular to the chart and the shooting distance of the camera meets the shooting distance, and adjusting the posture of the angle adjustment component of the tripod according to the viewing angle parameter, and then performing a test according to the acquired test pattern. The test efficiency of the chart can be improved by this embodiment.

Description

Technical Field

[0001] The present application relates to testing technology, in particular to a picture card testing device and a picture card testing method based on the picture card testing device. Background Art

[0002] With the technological progress in children's education and toys, the education and toy industries have introduced intelligent devices such as robots and point-reading devices. Matching these devices are picture cards made of materials such as cardboard, which can be used to create exquisite content and configure relevant identification codes to enable intelligent devices to find relevant information based on the information on the picture cards.

[0003] Because there are differences between physical products and designed products, when the chart is produced, it needs to be tested, one of which is the shooting test. Usually, the chart to be tested needs to be shot at a certain angle during the test.

[0004] Currently, the position of the camera is usually adjusted manually before shooting, which is not only inefficient but also has different adjustment effects from person to person. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a picture card testing device and a picture card testing method based on the picture card testing device to increase the test efficiency and optimize the test effect.

[0006] On the one hand, an embodiment of the present application provides a picture card testing device, comprising:

[0007] A tripod, provided with a moving mechanism, a telescopic mechanism and an angle adjustment assembly, one end of the telescopic structure is mounted on the moving mechanism, and the other end of the telescopic mechanism is connected to the angle adjustment assembly;

[0008] A rangefinder, mounted on the angle adjustment assembly, the rangefinder having at least three distance testing units distributed on a surface;

[0009] A camera, used for acquiring a test image, is mounted on the angle adjustment component, and its shooting direction is parallel to the distance measuring direction of the rangefinder;

[0010] An information input component, used to obtain test parameters, wherein the test parameters include shooting distance and viewing angle parameters;

[0011] A computing component is used to adjust the posture of the tripod according to the shooting distance and the measurement result of the rangefinder when the chart test device performs the test, so that the shooting direction of the camera is perpendicular to the chart and the shooting distance of the camera meets the shooting distance, and adjust the posture of the angle adjustment component of the tripod according to the viewing angle parameter, and then perform the test according to the acquired test pattern.

[0012] In some embodiments, the rangefinder includes four infrared ranging units.

[0013] In some embodiments, the computing component determines whether the camera shooting direction is perpendicular to the image card and the camera shooting distance satisfies the shooting distance in the following manner:

[0014] When the errors of any two distances measured by the four infrared distance measuring units are less than a preset value, it is determined that the shooting direction of the camera is perpendicular to the image card;

[0015] When the average value of the distances measured by the four infrared distance measuring units meets the shooting distance, it is determined that the shooting distance of the camera meets the shooting distance.

[0016] In some embodiments, the computing component and the information input component are installed on the camera, and the computing component communicates with the tripod via an I2C bus, a serial interface or Bluetooth.

[0017] In some embodiments, the chart test device further comprises an alarm unit, which is connected to the computing component and generates an alarm message when the computing component cannot control the tripod to complete posture adjustment within a preset time.

[0018] In some embodiments, when the computing component cannot control the tripod to complete the posture adjustment within a preset time, an alarm message is generated, specifically:

[0019] When the computing component cannot control the tripod to the predetermined position within 30 seconds, an alarm message is generated by ringing a bell.

[0020] In some embodiments, the camera and the tripod are detachably mounted.

[0021] On the other hand, an embodiment of the present application provides a picture card testing method based on the picture card testing device, comprising the following steps:

[0022] Display mode selection interface;

[0023] Obtaining a first selection instruction, and determining a parameter input mode according to the first selection instruction, wherein the parameter input mode includes a guide mode and a common configuration mode;

[0024] Obtain shooting distance and viewing angle parameters through the interface corresponding to the parameter input mode;

[0025] The tripod is controlled to adjust its posture according to the shooting distance and viewing angle parameters to perform the test.

[0026] In some embodiments, when the first selection instruction selects that the parameter input mode is a guidance mode, the interface for inputting each parameter and the guidance information corresponding to each parameter are displayed in sequence;

[0027] When the first selection instruction selects the parameter input mode as the common configuration mode, an input window for each parameter is displayed in one interface.

[0028] In some embodiments, the viewing angle parameters include a horizontal field of view angle parameter, a vertical field of view angle parameter, and a diagonal field of view angle parameter.

[0029] The embodiment of the present application sets a tripod with a moving mechanism, a telescopic mechanism, a rangefinder and an angle adjustment component, and installs a camera on the tripod so that it is parallel to the direction of the rangefinder. In this way, the angle of the camera can be adjusted by using the tripod so that the camera can maintain a certain distance and angle with the chart card. The embodiment of the present application also sets an information input component for obtaining test parameters, and the test parameters include shooting distance and viewing angle parameters; the cooperation calculation component adjusts the posture of the tripod according to the shooting distance and the measurement result of the rangefinder, so that the shooting direction of the camera can be perpendicular to the chart card and the shooting distance of the camera meets the shooting distance, and then the posture of the angle adjustment component of the tripod is adjusted according to the viewing angle parameter, and then the test is performed according to the acquired test pattern. By implementing the embodiment of the present application, the relative position relationship between the camera and the chart card can be efficiently and accurately adjusted in the chart card test to meet the test needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a module block diagram of a chart card testing device provided in an embodiment of the present application;

[0032] Figure 2 It is a flow chart of a picture card testing method based on a picture card testing device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described through the implementation method with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0034] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, words such as "setting" should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meaning of the above words in the present invention in combination with the specific content of the technical solution.

[0036] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0037] Reference Figure 1 , the embodiment of the present application provides a picture card testing device, comprising:

[0038] The tripod is provided with a moving mechanism, a telescopic mechanism, a rangefinder and an angle adjustment component, one end of the telescopic structure is mounted on the moving mechanism, the other end of the telescopic mechanism is connected to the angle adjustment component, and the rangefinder is mounted on the angle adjustment component. It should be understood that the tripod is the name of a type of equipment, and does not mean that it has only three legs, it can be a quadripod.

[0039] The rangefinder has at least three distance measuring units distributed on a surface, and specifically includes 4 infrared distance measuring units. The infrared distance measuring units are distributed on a square plane. The distance measuring units can be used to detect whether the plane where the distance measuring units are located is parallel to the measured chart. At the same time, a relatively accurate distance can be measured. In some embodiments, the rangefinder can be part of a tripod, and in other embodiments, the rangefinder can also be installed together with a camera.

[0040] The mobile mechanism may be a self-mobile mechanism equipped with a plurality of universal wheels.

[0041] Telescopic mechanism for adjusting the height of the rangefinder and angle adjustment assembly.

[0042] The angle adjustment mechanism is a universal table that can adjust the angle steplessly.

[0043] The camera is used to obtain the test image and is installed on the angle adjustment component, and the shooting direction is parallel to the distance measurement direction of the rangefinder. In this way, by adjusting the positional relationship between the rangefinder and the image card being tested, the shooting direction of the camera can be made perpendicular to the image card.

[0044] An information input component is used to obtain test parameters, and the test parameters include shooting distance and viewing angle parameters. Among them, the viewing angle parameters include: the viewing angle parameters include horizontal field of view angle HFOV parameters, vertical field of view angle VFOV parameters and diagonal field of view angle DFOV parameters. The information input component may refer to a touch screen installed on the camera. The relevant interface can be displayed through the touch screen. In addition, in some embodiments, the information input component may also refer to a data receiving module, such as a USB interface, a serial port, etc. The information input component can be installed on the camera and can be a separate device.

[0045] A computing component is used to adjust the posture of the tripod according to the shooting distance and the measurement result of the rangefinder when the chart test device performs the test, so that the shooting direction of the camera is perpendicular to the chart and the shooting distance of the camera meets the shooting distance, and adjust the posture of the angle adjustment component of the tripod according to the viewing angle parameter, and then perform the test according to the acquired test pattern.

[0046] The computing component is used to perform the test, which can be installed on the camera or another computer device. It is mainly used to control the tripod, and it can communicate with the tripod through methods such as I2C bus, serial port or wireless. The computing component will first adjust the posture of the tripod so that the camera is aligned with the image card according to the predetermined shooting distance, and then adjust the angle adjustment component of the tripod according to the viewing angle parameters so that the camera meets the viewing angle requirements. Then, the image can be taken at a set angle for related graphic tests. This type of graphic test can be used to determine whether the image card is clear, whether the code in the image card can be read correctly, etc. Related test programs can be built into the computing component. These test programs include but are not limited to image recognition programs.

[0047] It can be seen from the above embodiments that the automatic adjustment, focusing and automatic testing of the camera posture can be realized through the above embodiments, and the testing efficiency is high and the testing effect is better.

[0048] In some embodiments, in order to meet specific accuracy requirements and increase test efficiency, the computing component determines whether the camera shooting direction is perpendicular to the image card and the camera shooting distance meets the shooting distance in the following manner:

[0049] When the error between any two of the distances measured by the four infrared distance measuring units is less than a preset value, it is determined that the shooting direction of the camera is perpendicular to the image card. It should be understood that the computing component can use image recognition to enable the rangefinder to lock the four corners of the image card based on the positional relationship between the camera and the rangefinder. When the difference between the distance measuring units is small, it can be determined that the shooting direction is perpendicular to the image card.

[0050] When the average value of the distances measured by the four infrared distance measuring units meets the shooting distance, it is determined that the shooting distance of the camera meets the shooting distance. In this embodiment, the relevant distance can be determined based on the average value measured by multiple infrared distance measuring units.

[0051] Through the above method, the number of posture adjustments and the adjustment time can be reduced while meeting certain accuracy requirements, thereby improving the test speed.

[0052] In some embodiments, the computing component and the information input component are installed on the camera, and the computing component communicates with the tripod via an I2C bus, a serial interface, or Bluetooth. In these embodiments, the camera is integrated with a test function, which is equivalent to installing a camera with a test function on a tripod, and the camera automatically controls the tripod to complete the test based on the user's settings.

[0053] In some embodiments, the chart card testing device further includes an alarm unit, which is connected to the computing component, and generates an alarm message when the computing component cannot control the tripod to complete the posture adjustment within a preset time. Specifically, when the computing component cannot control the tripod to the predetermined position within 30 seconds, an alarm message is generated by ringing a bell. In some scenarios, the device cannot meet the set parameters by adjusting the posture. These scenarios may be that the tripod has been stuck and cannot move, resulting in the inability to move to the predetermined position. It is also possible that the angle cannot reach the angle aligned with the chart card. In such a case, an alarm is required so that the user can quickly troubleshoot.

[0054] Reference Figure 2 The embodiment of the present application provides a picture card testing method based on the picture card testing device, comprising the following steps:

[0055] The display mode selection interface can be provided. The user interface can provide a boot mode and a normal configuration mode.

[0056] A first selection instruction is obtained, and a parameter input mode is determined according to the first selection instruction, wherein the parameter input mode includes a guide mode and a common configuration mode. A user can input the first selection instruction selection mode through a touch screen, a mouse, a keyboard or other peripherals.

[0057] The shooting distance and viewing angle parameters are obtained through the interface corresponding to the parameter input mode. Then, in the respective modes, the required shooting distance parameters and viewing angle parameters are input. When the first selection instruction selects the parameter input mode as the guide mode, the interface for inputting each parameter and the guidance information corresponding to each parameter are displayed in sequence; when the first selection instruction selects the parameter input mode as the normal configuration mode, the input window for each parameter is displayed in one interface.

[0058] The tripod is controlled to adjust its posture according to the shooting distance and viewing angle parameters to perform the test. Then, after setting the parameters, the device will automatically search for the picture card and adjust the relevant angles. In order to increase the efficiency of the test, relevant marks can be set on the picture card to help the test device locate the position of the picture card. The user can also place the picture card within the shooting range of the camera first.

[0059] This embodiment explains the technical solution of the present application from another perspective.

[0060] The configuration defines that a tripod that supports 360-degree rotation, automatic movement, and automatic height extension is a smart tripod.

[0061] After the camera (including the computing component and the input component) and the smart tripod successfully communicate through the I2 bus, the serial port or the network, the camera obtains the control authority of the smart tripod.

[0062] The camera enters the test mode, and then the interactive interface home page pops up, guiding the tester to control the movement of the smart tripod.

[0063] The options on the interactive interface home page are as follows:

[0064] Option 1: Automatic wizard mode;

[0065] Option 2: Input the distance parameter between the camera and the test chart;

[0066] Option 3: Horizontal field of view HFOV parameter input;

[0067] Option 4: Vertical field of view VFOV parameter input;

[0068] Option 5: Diagonal field of view DFOV parameter input;

[0069] Option 6: Exit camera test mode.

[0070] After the user inputs options 2 to 5, the smart tripod locks the four corners of the chart through four infrared rays, and automatically moves itself according to the parameters until the parameters entered by the user are met. If it is unable to move to the specified position with the specified parameters, and the position stops moving for 30 seconds, an alarm will sound to remind the tester that the movement is blocked.

[0071] Option 6: The camera loses communication with the Smart Tripod.

[0072] Option 1 is the automatic wizard mode.

[0073] Step 1: Guide the user to input the distance parameters between the camera and the test chart. The smart tripod locks the four corners of the chart through four infrared rays, and then automatically moves itself according to the parameters until the parameters entered by the user are met. If it cannot move to the specified position with the specified parameters, and the position stops moving for 30 seconds, an alarm will sound to remind the tester that the movement is blocked.

[0074] Step 2: Guide the user to input the horizontal field of view (HFOV) parameters. The smart tripod locks the four corners of the chart through four infrared rays, and then automatically moves itself according to the parameters until the parameters entered by the user are met. If it cannot move to the specified position with the specified parameters, and the position stops moving for 30 seconds, an alarm will sound to remind the tester that the movement is blocked.

[0075] Step 3: Guide the user to input the vertical field of view VFOV parameters. The smart tripod locks the four corners of the chart through four infrared rays, and then automatically moves itself according to the parameters until the parameters entered by the user are met. If it cannot move to the specified position with the specified parameters, and the position stops moving for 30 seconds, an alarm will sound to remind the tester that the movement is blocked.

[0076] Step 4: Guide the user to input the diagonal field of view (DFOV) parameters. The smart tripod locks the four corners of the chart through four infrared rays, and then automatically moves itself according to the parameters until the parameters entered by the user are met. If it is unable to move to the specified position with the specified parameters, and the position stops moving for 30 seconds, an alarm will sound to remind the tester that the movement is blocked.

[0077] The last step: The prompt setting is completed and return to the home page of the interactive interface.

[0078] By following the above operating instructions, testers do not need to manually adjust and control the camera and image card, which shortens the time to set up the test platform and solves the problem that errors in manual adjustment cause the quality of photos to have a great impact on the test results.

[0079] If the integrated unit described in the present application is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store program codes.

[0080] Note that the above are only preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A chart test device, characterized in that: include: A tripod, provided with a moving mechanism, a telescopic mechanism and an angle adjustment assembly, one end of the telescopic structure is mounted on the moving mechanism, and the other end of the telescopic mechanism is connected to the angle adjustment assembly; A rangefinder, mounted on the angle adjustment assembly, the rangefinder having at least three distance testing units distributed on a surface; A camera, used for acquiring a test image, is mounted on the angle adjustment component, and its shooting direction is parallel to the distance measuring direction of the rangefinder; An information input component, used to obtain test parameters, wherein the test parameters include shooting distance and viewing angle parameters; A computing component, used for adjusting the posture of the tripod according to the shooting distance and the measurement result of the rangefinder, so that the shooting direction of the camera is perpendicular to the chart and the shooting distance of the camera satisfies the shooting distance, and adjusting the posture of the angle adjustment component of the tripod according to the viewing angle parameter, and then performing a test according to the acquired test pattern; The rangefinder includes four infrared distance measuring units. The computing component determines whether the camera shooting direction is perpendicular to the image card and the camera shooting distance meets the shooting distance in the following manner: When the errors of any two distances measured by the four infrared distance measuring units are less than a preset value, it is determined that the shooting direction of the camera is perpendicular to the image card; When the average value of the distances measured by the four infrared distance measuring units meets the shooting distance, it is determined that the shooting distance of the camera meets the shooting distance.

2. A chart test device according to claim 1, characterized in that: The computing component and the information input component are installed on the camera, and the computing component communicates with the tripod via an I2C bus, a serial interface or Bluetooth.

3. A chart test device according to claim 1, characterized in that: The chart test device further comprises an alarm unit, which is connected to the computing component and generates an alarm message when the computing component cannot control the tripod to complete the posture adjustment within a preset time.

4. A chart test device according to claim 3, characterized in that: When the computing component cannot control the tripod to complete the posture adjustment within a preset time, an alarm message is generated. Specifically, when the computing component cannot control the tripod to a predetermined position within 30 seconds, an alarm message is generated by ringing a bell.

5. The chart test device according to claim 1, characterized in that: The camera and the tripod are detachably mounted.

6. A picture card testing method based on the picture card testing device as claimed in claim 1, characterized in that: The following steps are involved: Display mode selection interface; Obtaining a first selection instruction, and determining a parameter input mode according to the first selection instruction, wherein the parameter input mode includes a guide mode and a common configuration mode; Obtain shooting distance and viewing angle parameters through the interface corresponding to the parameter input mode; The tripod is controlled to adjust its posture according to the shooting distance and viewing angle parameters to perform the test.

7. The method for testing a picture card based on a picture card testing device according to claim 6, characterized in that: When the first selection instruction selects that the parameter input mode is the guidance mode, the interface for inputting each parameter and the guidance information corresponding to each parameter are displayed in sequence; When the first selection instruction selects the parameter input mode as the common configuration mode, an input window for each parameter is displayed in one interface.

8. The method for testing a picture card based on a picture card testing device according to claim 6, characterized in that: The viewing angle parameters include horizontal viewing angle parameters, vertical viewing angle parameters and diagonal viewing angle parameters.

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