CN113686894B - System and method for image inspection and calibration of medical display - Google Patents
System and method for image inspection and calibration of medical display Download PDFInfo
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- CN113686894B CN113686894B CN202111068859.2A CN202111068859A CN113686894B CN 113686894 B CN113686894 B CN 113686894B CN 202111068859 A CN202111068859 A CN 202111068859A CN 113686894 B CN113686894 B CN 113686894B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0207—Details of measuring devices
- G01M11/0214—Details of devices holding the object to be tested
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
- G01N2021/8893—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques providing a video image and a processed signal for helping visual decision
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N2021/9511—Optical elements other than lenses, e.g. mirrors
Abstract
The invention discloses a system and a method for inspecting and calibrating a medical display image, wherein the system comprises: the video module is used for displaying a test picture to be detected; the optical sensor module is used for collecting the brightness data of the test picture; the upper computer module is used for acquiring the brightness data acquired by the optical sensor module, obtaining the quality inspection result of the image according to the brightness data and executing image calibration work according to the quality inspection result; the motor motion module is used for driving the fixed bracket provided with the optical sensor module to move to an area where the front side of the video module covers a test picture; the driving fixing bracket is used for being accommodated in the rear cover of the video module after the inspection and the calibration are finished; the invention can quickly, accurately and conveniently judge the image quality and standard conformity of the medical display, improves the screen ratio of the display in the aspect of display design, lightens the dependence of the structural design of the medical display on the width and thickness of the frame, and is beneficial to troubleshooting and repairing and replacing accessories.
Description
Technical Field
The invention belongs to the technical field of medical display equipment, and particularly relates to a system and a method for image inspection and calibration of a medical display.
Background
With the rapid development of various digital imaging devices such as DR \ CT \ MRI and the like and the increasing maturity and popularization of PACS technology, the way of using a medical display of a workstation as a reading carrier to observe influences and make disease diagnosis and develop learning communication becomes more mainstream and more extensive. Since medical displays are the ultimate presenter of medical impacts in digital systems, the display quality, stability of the images directly impacts the accuracy of clinical diagnosis.
The current method for inspecting the image quality of the medical display after leaving the factory is as follows: the light intensity sensor for measurement is arranged on the side edge or the bottom edge of the front surface of the display screen, the light intensity of a specific picture of the display screen is measured, and the information is sent to the processing device to judge the image quality displayed by the display in real time. However, the actual display area of the screen needs to be sacrificed in the design, and the accuracy of the optical sensor is also affected by physical deformation such as extrusion with the screen and temperature.
Chinese patent publication No. CN106782422a discloses a full screen digital brightness equalizer for a liquid crystal display, which is used for calibrating the brightness of a lower computer display, and is characterized by comprising an upper computer and a brightness tester; the upper computer is respectively connected with the brightness tester and the display to be calibrated through data lines, the brightness tester is connected with a brightness measuring probe through the data lines, and the brightness measuring probe is used for detecting the brightness information of the display of the lower computer and transmitting the brightness information to the brightness measuring instrument through the data lines. The patent can correct and correct whether the brightness of the full screen of the display is uniform, but cannot be used for judging whether the image quality of the medical display meets the standard.
Therefore, it is highly desirable to introduce a system and a method for inspecting and calibrating images of a medical display using a motion motor to drive an optical sensor, so as to ensure the maximum screen ratio of a screen, effectively improve the accuracy and precision of the image inspection and calibration, and help the normal operation of medical image diagnosis.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a system and a method for inspecting and calibrating images of a medical display, which can quickly, accurately and conveniently judge the image quality and standard conformity of the medical display, improve the screen occupation ratio of the display in the design of the display, reduce the dependence of the structural design of the medical display on the width and thickness of a frame, and facilitate troubleshooting and repair and replacement of accessories.
In order to achieve the purpose, the invention adopts the technical scheme that:
a system for medical display image inspection and calibration, comprising:
the video module is used for displaying a test picture to be detected;
the optical sensor module is used for collecting the brightness data of the test picture;
the upper computer module is used for acquiring the brightness data acquired by the optical sensor module, obtaining the quality inspection result of the image according to the brightness data and executing image calibration work according to the quality inspection result;
the motor motion module is used for driving the fixed support provided with the optical sensor module to move to an area where the front side of the video module covers a test picture; the fixing bracket is used for driving the fixing bracket to be accommodated in the rear cover of the video module after the detection and the calibration are finished;
the video module, the optical sensor module and the motor motion module are respectively connected with the upper computer module.
Specifically, the motor motion module comprises a shielding plate, a first motor for driving the shielding plate to move along a horizontal straight line, a fixed bracket provided with a light sensor module, and a second motor for driving the fixed bracket to rotate; the video module is a display, an opening is formed in the position, close to the upper frame, of the back shell of the display, the shielding plate is slidably mounted on the inner side of the back shell of the display through a sliding rail, and the shielding plate is driven by the first motor to linearly move along the sliding rail to shield or expose the opening; the mounting position of the fixed support corresponds to the position of the opening, and the fixed support is driven to rotate by the second motor, so that the tail end of the fixed support moves to the region of the front face of the display, which corresponds to the test picture, or the fixed support is accommodated in the inner side of the back shell of the display.
Furthermore, the fixed support is a U-shaped support, the fixed end of the U-shaped support is hinged to the inner side of the display back shell, the free end of the U-shaped support is provided with a light hole, and the light sensor module is installed at the position, corresponding to the light hole, of the free end of the U-shaped support; the second motor is used for driving the free end of the U-shaped support to rotate around the fixed end, when the free end of the U-shaped support rotates to the inner side of the display back shell, the shielding plate is driven by the second motor to move to the opening position, and the U-shaped support is located on the inner side of the shielding plate.
Furthermore, the motor motion module further comprises a first limit switch, a second limit switch, a third limit switch and a fourth limit switch which are connected with the upper computer module, and the first motor and the second motor are respectively connected with the upper computer module; the first limit switch and the second limit switch are both arranged on a motion path of the shielding plate and used for detecting position information of the shielding plate; the third limit switch and the fourth limit switch are both arranged on the motion path of the U-shaped bracket and are used for detecting the position information of the U-shaped bracket; when the shielding plate is at the initial position, the opening is closed by the shielding plate, and the second limit switch is triggered at the moment; when the shielding plate is located at the testing position, the opening is completely exposed, and the first limit switch is triggered at the moment; when the U-shaped support is located at the initial position, the free end of the U-shaped support is located on the inner side of the display back shell, and at the moment, the fourth limit switch is triggered; when the U-shaped support is located at the testing position, the free end of the U-shaped support is located at the position, corresponding to the testing picture, of the front face of the display, and the third limit switch is triggered at the moment.
Corresponding to the system for inspecting and calibrating the medical display image, the invention also provides a method for inspecting and calibrating the medical display image, which comprises the following steps:
s1, controlling a motor motion module to act through an upper computer module, and driving a fixed support provided with an optical sensor module to move to an area where the front side of a video module covers a test picture;
s2, controlling a video module to display and switch different test pictures through an upper computer module;
s3, acquiring brightness data of the test picture through the optical sensor module, and sending the acquired brightness data to the upper computer module;
s4, the upper computer module calculates the quality inspection result of the image according to the acquired brightness data;
s5, the upper computer module calibrates the video module according to the quality inspection result;
and S6, after the calibration is finished, the motor motion module is controlled to act through the upper computer module, and the fixed support is driven to be accommodated in the rear cover of the video module.
Specifically, in step S4, the method for calculating the quality inspection result of the image includes: and according to the standard curve of the video module, comparing the error between the actually measured brightness value and the standard value of each test picture, and calculating to obtain the image quality of the current display.
Further, in step S5, the method for calibrating the video module includes: the method comprises the steps of controlling a video module to display screen original characteristic images, collecting real-time brightness values of each original characteristic image, calculating and fitting original screen characteristic data closer to a real-time state of a display according to the standard curve and the real-time brightness values of each original characteristic image, and sending the original screen characteristic data to the video module to achieve the purpose of calibrating curves and colors of the display.
Compared with the prior art, the invention has the beneficial effects that: the invention controls a motor motion module through an upper computer module to drive a fixed bracket provided with an optical sensor module to move to an area where the front side of a video module covers a test picture; after the inspection and calibration are finished, driving the fixed support to be accommodated in the rear cover of the video module; the image quality and the standard conformance of the medical display can be judged quickly, accurately and conveniently, the screen occupation ratio of the display is improved in the design of the display, the dependence of the structural design of the medical display on the width and the thickness of a frame is reduced, and troubleshooting, maintenance and replacement of accessories are facilitated.
Drawings
FIG. 1 is a flow chart of a method for inspecting and calibrating images of a medical display according to the present invention;
FIG. 2 is a schematic view of a test frame with different gray levels generated by the video module according to the present invention;
FIG. 3 is a schematic diagram of a front side of an image inspecting and calibrating system for a medical display according to the present invention;
FIG. 4 is a schematic diagram of a back side structure of a medical display image inspection and calibration system according to the present invention;
FIG. 5 is a schematic view of the shield and the U-shaped bracket in the initial positions according to the embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating a state of the shielding plate moving from the initial position to the testing position according to the embodiment of the present invention;
FIG. 7 is a schematic view of the U-shaped bracket moving from the initial position to the testing position when the shielding plate is at the testing position according to the embodiment of the present invention;
FIG. 8 is a schematic view of the shielding plate and the U-shaped bracket in the testing position according to the embodiment of the present invention;
FIG. 9 is a schematic view of the U-shaped bracket of the embodiment of the present invention returning to the initial position when the shielding plate is at the testing position;
FIG. 10 is a schematic view showing the shield and the U-shaped bracket of the embodiment of the present invention returned to their initial positions;
in the figure: 1. a video module; 2. a light sensor module; 3. a shielding plate; 4. a first motor; 5. fixing a bracket; 6. a second motor; 7. an opening; 8. a slide rail; 9. testing the picture; 10. a light-transmitting hole; 11. a first limit switch; 12. a second limit switch; 13. a third limit switch; 14. and a fourth limit switch.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, the present embodiment provides a system for image inspection and calibration of a medical display, including:
the video module 1 is used for displaying a test picture 9 to be detected;
the optical sensor module 2 is used for collecting the brightness data of the test picture 9;
the upper computer module is used for acquiring the brightness data acquired by the optical sensor module 2, obtaining the quality inspection result of the image according to the brightness data and executing image calibration work according to the quality inspection result;
the motor motion module is used for driving the fixed bracket 5 provided with the optical sensor module 2 to move to the area of the front side of the video module 1 covering the test picture 9; and is used for driving the fixed bracket 5 to be accommodated in the back cover of the video module 1 after the checking and the calibration are finished;
the video module 1, the optical sensor module 2 and the motor motion module are respectively connected with the upper computer module.
Specifically, as shown in fig. 5 to 10, the motor motion module includes a shielding plate 3, a first motor 4 driving the shielding plate 3 to move along a horizontal straight line, a fixing bracket 5 on which the optical sensor module 2 is mounted, and a second motor 6 driving the fixing bracket 5 to rotate; the video module 1 is a display, an opening 7 is formed in a position, close to an upper frame, of a back shell of the display, the shielding plate 3 is slidably mounted on the inner side of the back shell of the display through a sliding rail 8, and the first motor 4 drives the shielding plate 3 to linearly move along the sliding rail 8 to shield or expose the opening 7; the mounting position of the fixed support 5 corresponds to the position of the opening 7, the second motor 6 drives the fixed support 5 to rotate, so that the tail end of the fixed support 5 moves to the area of the front surface of the display corresponding to the test picture 9, or the fixed support 5 is accommodated inside the back shell of the display.
Further, the fixed support 5 is a U-shaped support, the fixed end of the U-shaped support is hinged to the inner side of the display back shell, the free end of the U-shaped support is provided with a light hole 10, and the optical sensor module 2 is installed at the position, corresponding to the light hole 10, of the free end of the U-shaped support; the second motor 6 is used for driving the free end of the U-shaped support to rotate around the fixed end, when the free end of the U-shaped support rotates to the inner side of the display back shell, and the second motor 6 drives the shielding plate 3 to move to the position of the opening 7, the U-shaped support is located on the inner side of the shielding plate 3.
Further, the motor motion module further comprises a first limit switch 11, a second limit switch 12, a third limit switch 13 and a fourth limit switch 14 which are connected with the upper computer module, and the first motor 4 and the second motor 6 are respectively connected with the upper computer module; the first limit switch 11 and the second limit switch 12 are both installed on a motion path of the shielding plate 3 and used for detecting position information of the shielding plate 3; the third limit switch 13 and the fourth limit switch 14 are both installed on a motion path of the U-shaped bracket and used for detecting position information of the U-shaped bracket; when the shielding plate 3 is in the initial position, the opening 7 is closed by the shielding plate 3, and the second limit switch 12 is triggered; when the shielding plate 3 is in the testing position, the opening 7 is completely exposed, and the first limit switch 11 is triggered; when the U-shaped bracket is at the initial position, the free end of the U-shaped bracket is positioned at the inner side of the display back shell, and the fourth limit switch 14 is triggered at the moment; when the U-shaped bracket is in the testing position, the free end of the U-shaped bracket is located at the position corresponding to the testing picture 9 on the front of the display, and the third limit switch 13 is triggered at this time.
The embodiment also provides a method for checking and calibrating the image of the medical display, which comprises the following steps:
s1, controlling a motor motion module to act through an upper computer module, and driving a fixed support 5 provided with an optical sensor module 2 to move to an area where the front side of a video module 1 covers a test picture 9;
the shielding plate 3 is driven by the first motor 4 to move along a horizontal straight line, when the shielding plate reaches the position of the leftmost end (observed from the back of the display), the first limit switch 11 is triggered, the first motor 4 stops working, and the shielding plate 3 moves from the initial position to the testing position; then the second motor 6 drives the U-shaped bracket provided with the optical sensor module 2 to rotate around the fixed end, and the bracket reaches the front of the screen effective area (the area corresponding to the test picture 9) after rotating counterclockwise (observed from the right side of the display) by 270 degrees, at this time, the third limit switch 13 is triggered, and the bracket continues to drive the U-shaped bracket to rotate counterclockwise for 0.5s and then stops, so as to ensure that the free end of the fixed bracket 5 is close to the screen display area.
S2, controlling the video module 1 to display and switch test pictures 9 with different gray scales through the upper computer module (as shown in figure 2);
s3, acquiring brightness data of the test picture 9 through the optical sensor module 2, and sending the acquired brightness data to the upper computer module;
s4, the upper computer module calculates the quality inspection result of the image according to the acquired brightness data;
the upper computer module compares the error between the actually measured brightness value and the standard value of each test picture 9 according to the standard curve of the video module 1, and then the image quality of the current display can be calculated;
s5, the upper computer module calibrates the video module 1 according to the quality inspection result;
the upper computer module controls the video module 1 to display screen original characteristic images, collects the real-time brightness value of each original characteristic image, calculates and fits original screen characteristic data closer to the real-time state of the display according to the standard curve and the real-time brightness value of each original characteristic image, and sends the original screen characteristic data to the video module 1 so as to achieve the purpose of calibrating the curve and the color of the display;
s6, after the calibration is finished, the motor motion module is controlled to act through the upper computer module, and the fixed support 5 is driven to be accommodated in the rear cover of the video module 1;
after the calibration is finished, the U-shaped bracket is driven to return along the original path by the second motor 6 until the fourth limit switch 14 is triggered, and the U-shaped bracket is at the initial position; the first motor 4 drives the shielding plate 3 to move back to the position of the opening 7 along a straight line until the second limit switch 12 is triggered, and the shielding plate 3 is at the initial position.
In this embodiment, after the motor motion module is powered on, the real-time position of the fixed bracket 5 is detected first, and if the fourth limit switch 14 is not triggered, it is determined that the fixed bracket 5 is not at the initial position currently; if the shielding plate 3 is not triggered, judging that the shielding plate 3 is not in the testing position, and executing a zeroing action, namely firstly driving the shielding plate 3 to move through the first motor 4 until the first limit switch 11 is triggered, and then driving the U-shaped bracket to rotate through the second motor 6 until the fourth limit switch 14 is triggered; finally, the first motor 4 drives the shielding plate 3 to move until the second limit switch 12 is triggered.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A system for image inspection and calibration of a medical display, comprising:
the video module is used for displaying a test picture to be detected;
the optical sensor module is used for collecting the brightness data of the test picture;
the upper computer module is used for acquiring the brightness data acquired by the optical sensor module, obtaining the quality inspection result of the image according to the brightness data and executing image calibration work according to the quality inspection result;
the motor motion module is used for driving the fixed bracket provided with the optical sensor module to move to an area where the front side of the video module covers a test picture; the fixing bracket is used for driving the fixing bracket to be accommodated in the rear cover of the video module after the detection and the calibration are finished; the motor motion module comprises a shielding plate, a first motor for driving the shielding plate to move along a horizontal straight line, a fixed bracket provided with the optical sensor module, and a second motor for driving the fixed bracket to rotate; the video module is a display, an opening is formed in the position, close to the upper frame, of the back shell of the display, the shielding plate is slidably mounted on the inner side of the back shell of the display through a sliding rail, and the shielding plate is driven by the first motor to linearly move along the sliding rail to shield or expose the opening; the mounting position of the fixed support corresponds to the position of the opening, and the fixed support is driven to rotate by the second motor, so that the tail end of the fixed support moves to the region of the front face of the display, which corresponds to the test picture, or the fixed support is accommodated in the inner side of the back shell of the display;
the video module, the optical sensor module and the motor motion module are respectively connected with the upper computer module;
the method for applying the system for verifying and calibrating the medical display image comprises the following steps:
s1, controlling a motor motion module to act through an upper computer module, and driving a fixed support provided with an optical sensor module to move to an area where the front side of a video module covers a test picture;
s2, controlling a video module to display and switch different test pictures through an upper computer module;
s3, acquiring brightness data of the test picture through the optical sensor module, and sending the acquired brightness data to the upper computer module;
s4, the upper computer module calculates the quality inspection result of the image according to the acquired brightness data;
s5, the upper computer module calibrates the video module according to the quality inspection result;
and S6, after the calibration is finished, the motor motion module is controlled to act through the upper computer module, and the fixed support is driven to be accommodated in the rear cover of the video module.
2. The system for image inspection and calibration of a medical display according to claim 1, wherein the fixed bracket is a U-shaped bracket, the fixed end of the U-shaped bracket is hinged inside the back shell of the display, the free end of the U-shaped bracket is provided with a light hole, and the light sensor module is installed at the position of the free end of the U-shaped bracket corresponding to the light hole; the second motor is used for driving the free end of the U-shaped support to rotate around the fixed end, when the free end of the U-shaped support rotates to the inner side of the display back shell, the shielding plate is driven by the second motor to move to the opening position, and the U-shaped support is located on the inner side of the shielding plate.
3. The system for inspecting and calibrating the image of the medical display according to claim 2, wherein the motor motion module further comprises a first limit switch, a second limit switch, a third limit switch and a fourth limit switch which are connected with the upper computer module, and the first motor and the second motor are respectively connected with the upper computer module; the first limit switch and the second limit switch are both arranged on a motion path of the shielding plate and used for detecting position information of the shielding plate; the third limit switch and the fourth limit switch are both arranged on the motion path of the U-shaped bracket and are used for detecting the position information of the U-shaped bracket; when the shielding plate is at the initial position, the opening is closed by the shielding plate, and the second limit switch is triggered at the moment; when the shielding plate is in the testing position, the opening is completely exposed, and the first limit switch is triggered at the moment; when the U-shaped support is located at the initial position, the free end of the U-shaped support is located on the inner side of the display back shell, and at the moment, the fourth limit switch is triggered; when the U-shaped support is located at the testing position, the free end of the U-shaped support is located at the position, corresponding to the testing picture, of the front face of the display, and the third limit switch is triggered at the moment.
4. The system for image inspection and calibration of medical displays according to claim 1, wherein in step S4, the method for calculating the quality inspection result of the image comprises: and according to the standard curve of the video module, comparing the error between the actually measured brightness value and the standard value of each test picture, and calculating to obtain the image quality of the current display.
5. The system for image inspection and calibration of medical displays according to claim 4, wherein in step S5, the method for calibrating the video module comprises: the method comprises the steps of controlling a video module to display screen original characteristic images, collecting real-time brightness values of each original characteristic image, calculating and fitting original screen characteristic data closer to a real-time state of a display according to the standard curve and the real-time brightness values of each original characteristic image, and sending the original screen characteristic data to the video module to achieve the purpose of calibrating curves and colors of the display.
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| CN107463789A (en) * | 2017-08-21 | 2017-12-12 | 中国计量科学研究院 | A kind of integrated medical display self-checking device and its calibration method |
| CN109747415A (en) * | 2018-12-20 | 2019-05-14 | 惠州华阳通用电子有限公司 | A kind of combination instrument shows picture calibration system and method |
| CN112368559A (en) * | 2019-03-19 | 2021-02-12 | 西安诺瓦星云科技股份有限公司 | Display unit correction system and correction method |
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