Dot pen device, coding calibration method, system and electronic equipment

Abstract

The present invention relates to a dot matrix pen device, a coding calibration method, a system, an electronic device and a computer-readable storage medium, wherein the method comprises: obtaining a first micro-image dot code and a second micro-image dot code; the micro-image dot code has a micro-image mark code and a micro-image information code; respectively enhancing the first micro-image dot code and the second micro-image dot code to obtain a first enhanced image and a second enhanced image; verifying the first enhanced image and the second enhanced image to obtain a verified information code; identifying the verified information code to obtain a writing track record of the dot matrix pen. The present invention can greatly increase the reading accuracy of the information code by using the first enhanced image and the second enhanced image to verify the micro-image dot code.

Description

Technical Field

[0001] The present invention relates to the technical field of image calibration, and in particular to a dot matrix pen device, a coding calibration method, a system, an electronic device and a computer-readable storage medium. Background Art

[0002] A micro-dot code is printed on the paper as the background of the paper, which is different from the text, pictures and other contents on the paper. Then, a pen with a camera is used to select different positions on the paper, and the micro-dot code is read and analyzed to obtain the marking information corresponding to the relevant text, pictures and other contents. This kind of pen with a camera is generally called a dot matrix pen, which generally includes an infrared light-emitting tube, a micro camera, an image processing unit, a communication unit, etc. There are generally two types of dot matrix pen applications, one for point reading (generally called a point reading pen), and the other for recording the writing trajectory of the pen.

[0003] The dot matrix pen (hereinafter referred to as the dot matrix pen) used to record the writing trajectory of the pen needs to take continuous and rapid photos of the micro-image dot code under the pen tip position, and requires rapid processing of the micro-image dot code image to obtain relevant information about the position of the pen tip, including page number, coordinates and other information. The existing micro-image coding generally includes two parts: one, the micro-image marking code; two, the micro-image information code. The micro-image marking code is mainly used to identify the size and orientation of the micro-image information code, while the micro-image information code records the relevant position information of the micro-image unit through the encoding method, including page number, horizontal coordinate, vertical coordinate, etc.

[0004] like Figure 1 A micro-image unit 1 of the prior art micro-image dot code includes a micro-image marking code 2 and an information code 3.

[0005] When the dot matrix pen is writing, it is necessary to first identify the micro-image unit through the micro-image mark code, and then obtain the micro-image information code. However, due to the high acquisition frame rate, the interference of ambient light on the optical camera, and the distortion of the image caused by the tilt of the pen and other factors, errors may occur in the decoding of the information code. The existing method for judging information code errors generally uses the images of the previous and next related frames to assist in judgment. If an abnormal data frame appears, it is judged that the information code is wrong. However, since this judgment method is based on the images of the previous and next related frames, the judgment accuracy of the information code is not high. Summary of the invention

[0006] To solve the above problems, an object of the embodiments of the present invention is to provide a coding calibration method, device, electronic device and computer-readable storage medium.

[0007] A coding calibration method, comprising:

[0008] Step 1: Obtain a first micro-image point code; the micro-image point code has a micro-image mark code and a micro-image information code, and the micro-image mark code has at least one check code point that is the same as the code point on the micro-image information code;

[0009] Step 2: Verify the first micro-image point code to obtain a verified information code;

[0010] Step 3: Identify the verified information code to obtain the writing track record of the dot matrix pen.

[0011] Preferably, the step 2: verifying the first micro-image point code to obtain a verified information code comprises:

[0012] Step 2.1: Obtain the second micro-image point code;

[0013] Step 2.2: judging whether the first micro-picture point code and the second micro-picture point code are normal according to the micro-picture mark code;

[0014] Step 2.3: If the first micro-picture dot code is normal and the second micro-picture dot code is abnormal, the first micro-picture dot code is selected for verification to obtain a verified information code;

[0015] Step 2.4: If the first micro-picture dot code is abnormal and the second micro-picture dot code is normal, the second micro-picture dot code is selected for verification to obtain a verified information code;

[0016] Step 2.5: If both the first micro-picture dot code and the second micro-picture dot code are abnormal, the first micro-picture dot code and the second micro-picture dot code are reacquired and the process returns to step 2.2.

[0017] Preferably, the step 2: verifying the first micro-image point code to obtain a verified information code comprises:

[0018] Step 2.1: Obtain the second micro-image point code;

[0019] Step 2.2: performing image enhancement on the first micro-image dot code and the second micro-image dot code respectively to obtain a first enhanced image and a second enhanced image;

[0020] Step 2.3: Verify the first enhanced image and the second enhanced image to obtain a verified information code;

[0021] Step 2.4: Identify the verified information code to obtain the writing track record of the dot matrix pen.

[0022] Preferably, the step 2.2: performing image enhancement on the first micro-image dot code and the second micro-image dot code respectively to obtain a first enhanced image and a second enhanced image, comprises:

[0023] Take a neighborhood with each pixel in the micro-image point code as the center, calculate the grayscale average of all pixels in the neighborhood, and use it as the output of the central pixel to obtain the enhanced image; the output formula of the central pixel is:

[0024]

[0025] Among them, G(j,k) represents the central pixel, N×N represents the neighborhood of N*N size, A represents the point set composed of neighborhood pixels, and d(m,n) represents the pixel point in the neighborhood.

[0026] Preferably, after the step 2.2: respectively performing image enhancement on the first micro-image dot code and the second micro-image dot code to obtain a first enhanced image and a second enhanced image, the method further includes:

[0027] Using the filtering model:

[0028]

[0029] The first enhanced image and the second enhanced image are filtered respectively; wherein g(x, y) represents the filtered image, f(x, y) represents the enhanced image, α represents the adjustment factor,

[0030] Preferably, the step 2.3: verifying the first enhanced image and the second enhanced image to obtain a verified information code comprises:

[0031] Step 2.3.1: Obtain a first shooting height of the first enhanced image and a second shooting height of the second enhanced image;

[0032] Step 2.3.2: adjusting the sizes of the first enhancement image and the second enhancement image according to the first shooting height and the second shooting height respectively to obtain a first calibration image and a second calibration image with the same sizes;

[0033] Step 2.3.3: Determine whether the micro-image marking codes on the first verification image and the second verification image are consistent;

[0034] Step 2.3.4: If the micro-image marking codes on the first verification image and the second verification image are consistent, the micro-image information code on the first verification image or the second verification image is taken as the information code after verification;

[0035] Step 2.3.5: If the micro-image marking codes on the first verification image and the second verification image are inconsistent, a verification error message is output.

[0036] The present invention also provides a coding calibration system, comprising:

[0037] A micro-picture point code acquisition module, used for acquiring a first micro-picture point code; the micro-picture point code has a micro-picture mark code and a micro-picture information code, and the micro-picture mark code has at least one check code point that is the same as the code point on the micro-picture information code;

[0038] A verification module, used for verifying the first micro-image point code to obtain a verified information code;

[0039] The information code recognition module is used to recognize the calibrated information code to obtain the writing track record of the dot matrix pen.

[0040] The present invention also provides a dot matrix pen device, comprising:

[0041] A first camera is used to collect a first micro-image point code at a first height;

[0042] A second camera is used to collect a second micro-image point code at a second height;

[0043] The image processor is connected to the first camera and the second camera respectively, and is used to verify and identify the first micro-image dot code and the second micro-image dot code to obtain the writing trajectory record of the dot matrix pen, and transmit the writing trajectory record to the host computer for display.

[0044] Preferably, it also includes:

[0045] A communication unit, connected to the image processor, for transmitting the writing trajectory record to a host computer;

[0046] A first lens, arranged in front of the lens of the first camera;

[0047] The second lens is arranged in front of the lens of the second camera.

[0048] The present invention also provides an electronic device, comprising a bus, a transceiver (display unit / output unit, input unit), a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the transceiver, the memory, and the processor are connected via the bus, and wherein the computer program, when executed by the processor, implements the steps in any one of the above-mentioned coding calibration methods.

[0049] The present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps in any one of the above-mentioned coding calibration methods.

[0050] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0051] The present invention relates to a dot matrix pen device, a coding calibration method, a system, an electronic device and a computer-readable storage medium, wherein the method comprises: obtaining a first micro-image dot code and a second micro-image dot code; performing image enhancement on the first micro-image dot code and the second micro-image dot code to obtain a first enhanced image and a second enhanced image; verifying the first enhanced image and the second enhanced image to obtain a verified information code; and identifying the verified information code to obtain a writing track record of the dot matrix pen. The present invention can greatly increase the reading accuracy of the information code by using the first enhanced image and the second enhanced image to verify the micro-image dot code.

[0052] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 A schematic diagram of the existing micro-image coding provided by the present invention;

[0055] Figure 2 A schematic diagram of the micro-picture point code provided by the present invention;

[0056] Figure 3 A schematic diagram of a dot matrix pen device in an embodiment of the present invention;

[0057] Figure 4 This is another schematic diagram of a dot matrix pen device in an embodiment of the present invention. DETAILED DESCRIPTION

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0060] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] The object of the present invention is to provide a dot pen device, a coding calibration method, a system and an electronic device, aiming to solve the problem of low recognition accuracy of the existing coding calibration method.

[0062] The present invention provides a coding calibration method, comprising:

[0063] Step 1: Obtain a first micro-picture point code; the micro-picture point code has a micro-picture mark code and a micro-picture information code, and the micro-picture mark code has at least one check code point that is the same as the code point on the micro-picture information code;

[0064] See also Figure 2 The present invention adds a point code check mark 4 to the existing micro-image coding. Each check code point is composed of 4 code points, and their positions are recorded as upper left, lower left, upper right, and lower right respectively. This check code point plays two roles. One is to check the information code, and the other is to make the existing micro-image mark code "L" form an asymmetric figure, which is conducive to judging the direction of the micro-image without adding extra KEY codes to mark the direction. The check code of the present invention can be checked for code points at different positions respectively, that is, all code points at the same position in the micro-image unit, and the code points at the corresponding positions of the check code block, together form an even check, so 4 check code points will be generated. By the same token, for other types of information code points, for example, each information code point block is composed of 8 code points, similar 8 code points are used for verification.

[0065] Step 2: Verify the first micro-image point code to obtain a verified information code;

[0066] In practical applications, the present invention can use an even check method to check the micro-image point code.

[0067] Step 3: Identify the calibrated information code to obtain the writing track record of the dot matrix pen.

[0068] The present invention can directly determine the direction of the micro-image by using the first micro-image point code to verify it, without adding extra KEY codes to mark the direction, which can not only improve the recognition accuracy, but also improve the recognition speed.

[0069] As another specific implementation of the present invention, the present invention can also use a dual camera to verify the micro-picture point code. Further, in this embodiment, step 2: can also be:

[0070] Step 2.1: Obtain the second micro-image point code;

[0071] Step 2.2: judging whether the first micro-picture point code and the second micro-picture point code are normal according to the micro-picture mark code;

[0072] Step 2.3: If the first micro-picture code is normal and the second micro-picture code is abnormal, the first micro-picture code is selected for verification to obtain the verified information code;

[0073] Step 2.4: If the first micro-picture dot code is abnormal and the second micro-picture dot code is normal, the second micro-picture dot code is selected for verification to obtain the verified information code;

[0074] Step 2.5: If both the first micro-picture dot code and the second micro-picture dot code are abnormal, reacquire the first micro-picture dot code and the second micro-picture dot code, and return to step 2.2.

[0075] The present invention uses dual cameras to simultaneously capture the same medium with a micro-image dot code to obtain a first micro-image dot code and a second micro-image dot code, and performs verification based on the first micro-image dot code and the second micro-image dot code, which can greatly improve the recognition speed of the information code.

[0076] As another specific implementation of the present invention, the present invention can also pre-process the micro-picture point code collected by the dual cameras and then verify it. Further, in this embodiment, step 2: can also be:

[0077] Step 2.1: Obtain the second micro-image point code;

[0078] Step 2.2: performing image enhancement on the first micro-image dot code and the second micro-image dot code respectively to obtain a first enhanced image and a second enhanced image;

[0079] Furthermore, the step 2.2 includes:

[0080] Take a neighborhood with each pixel in the micro-image point code as the center, calculate the grayscale average of all pixels in the neighborhood, and use it as the output of the central pixel to obtain the enhanced image; the output formula of the central pixel is:

[0081]

[0082] Among them, G(j,k) represents the central pixel, N×N represents the neighborhood of N*N size, A represents the point set composed of neighborhood pixels, and d(m,n) represents the pixel point in the neighborhood.

[0083] The present invention selects a neighborhood, calculates the grayscale average value of all pixels in the neighborhood, and uses the grayscale average value as the output of the central pixel, thereby effectively eliminating image noise generated by the camera during image acquisition.

[0084] After step 2.2, the method further includes:

[0085] Using the filtering model:

[0086]

[0087] The first enhanced image and the second enhanced image are filtered respectively; wherein g(x, y) represents the filtered image, f(x, y) represents the enhanced image, α represents the adjustment factor,

[0088] The present invention utilizes a filtering model to perform image filtering on an image, which can enlarge the difference between different features in the image and enhance the image interpretation and recognition effect.

[0089] Step 2.3: Verify the first enhanced image and the second enhanced image to obtain a verified information code;

[0090] In the embodiment of the present invention, step 2.3 specifically includes:

[0091] Step 2.3.1: Obtain a first shooting height of the first enhanced image and a second shooting height of the second enhanced image;

[0092] Step 2.3.2: Adjust the sizes of the first enhanced image and the second enhanced image according to the first shooting height and the second shooting height respectively to obtain the first verification image and the second verification image with the same size; it should be noted that the shooting height is proportional to the adjustment of the size, that is, the higher the shooting height, the larger the size that needs to be enlarged.

[0093] Step 2.3.3: Determine whether the micro-image marking codes on the first verification image and the second verification image are consistent;

[0094] Step 2.3.4: If the micro-image marking codes on the first verification image and the second verification image are consistent, the micro-image information code on the first verification image or the second verification image is taken as the verified information code; it should be noted that the present invention can use even parity to verify whether the micro-image marking codes are consistent.

[0095] Step 2.3.5: If the micro-image marking codes on the first verification image and the second verification image are inconsistent, a verification error message is output.

[0096] Step 2.4: Identify the verified information code to obtain the writing track record of the dot matrix pen.

[0097] The present invention uses a dot code acquisition device with dual cameras to collect micro-image dot codes and performs image enhancement and filtering on the collected micro-image dot codes, so as to obtain more accurate dot codes, thereby greatly increasing the accuracy of dot pen reading. Assuming that the error rate of a reading device using one camera is 10%, the error rate can be reduced to 1% in theory by using a reading device using two cameras.

[0098] The present invention also provides a coding calibration system, comprising:

[0099] A micro-picture point code acquisition module, used for acquiring a first micro-picture point code; the micro-picture point code has a micro-picture mark code and a micro-picture information code, and the micro-picture mark code has at least one check code point that is the same as the code point on the micro-picture information code;

[0100] A verification module, used for verifying the first micro-image point code to obtain a verified information code;

[0101] The information code recognition module is used to recognize the calibrated information code to obtain the writing track record of the dot matrix pen.

[0102] See also Figure 3 The present invention also provides a dot pen device, and the above-mentioned encoding calibration method is implemented based on the dot pen device of the present invention, wherein the device includes: a first camera, a second camera, an image processor, a communication unit, a first lens and a second lens.

[0103] The first camera is used to collect the first micro-image dot code at a first height; the second camera is used to collect the second micro-image dot code at a second height; the image processor is connected to the first camera and the second camera respectively, and is used to verify and identify the first micro-image dot code and the second micro-image dot code to obtain the writing trajectory record of the dot matrix pen. The communication unit is connected to the image processor, and is used to transmit the writing trajectory record to the host computer for display. The first lens is set in front of the lens of the first camera; the second lens is set in front of the lens of the second camera. The present invention can make the image collected by the camera clearer by adding a lens in front of the camera.

[0104] In practical applications, the first and second cameras are arranged separately and at a certain distance from each other, one is the main working camera and the other is the auxiliary camera. When the main camera obtains the micro-image point code image and analyzes and calculates that the check code in the micro-image point code is wrong, the micro-image point code image in the auxiliary camera can be used to continue the check, thereby improving the check speed. The present invention can also use the two in combination for compensation, so that the reading error rate is greatly reduced.

[0105] See also Figure 4 As another embodiment of the device of the present invention, the focal lengths of the two cameras can be different, which further increases the difference between the two cameras and makes the code reading accuracy of the entire dot matrix pen better.

[0106] An embodiment of the present invention also provides an electronic device, including a bus, a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor. The transceiver, the memory, and the processor are respectively connected via a bus. When the computer program is executed by the processor, each process of the above-mentioned coding calibration method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0107] In addition, an embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the various processes of the above-mentioned encoding calibration method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0108] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technical solution that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A coding calibration method, characterized in that: include: Step 1: Obtain the first micro-image point code; The micro-image point code has a micro-image mark code and a micro-image information code, and the micro-image mark code has at least one check code point that is the same as the code point on the micro-image information code; Step 2: Verify the first micro-image point code to obtain a verified information code; Step 3: Identify the verified information code to obtain the writing track record of the dot matrix pen.

2. A coding calibration method according to claim 1, characterized in that: The step 2: verifying the first micro-image point code to obtain a verified information code, including: Step 2.1: Obtain the second micro-image point code; Step 2.2: judging whether the first micro-picture point code and the second micro-picture point code are normal according to the micro-picture mark code; Step 2.3: If the first micro-picture dot code is normal and the second micro-picture dot code is abnormal, the first micro-picture dot code is selected for verification to obtain a verified information code; Step 2.4: If the first micro-picture dot code is abnormal and the second micro-picture dot code is normal, the second micro-picture dot code is selected for verification to obtain a verified information code; Step 2.5: If both the first micro-picture dot code and the second micro-picture dot code are abnormal, the first micro-picture dot code and the second micro-picture dot code are reacquired and the process returns to step 2.

2.

3. A coding calibration method according to claim 1, characterized in that: The step 2: verifying the first micro-image point code to obtain a verified information code, including: Step 2.1: Obtain the second micro-image point code; Step 2.2: performing image enhancement on the first micro-image dot code and the second micro-image dot code respectively to obtain a first enhanced image and a second enhanced image; Step 2.3: Verify the first enhanced image and the second enhanced image to obtain a verified information code; Step 2.4: Identify the verified information code to obtain the writing track record of the dot matrix pen.

4. A coding calibration method according to claim 3, characterized in that: The step 2.2: performing image enhancement on the first micro-image dot code and the second micro-image dot code respectively to obtain a first enhanced image and a second enhanced image, comprises: Take a neighborhood with each pixel in the micro-image point code as the center, calculate the grayscale average of all pixels in the neighborhood, and use it as the output of the central pixel to obtain the enhanced image; the output formula of the central pixel is: Among them, G(j,k) represents the central pixel, N×N represents the neighborhood of N*N size, A represents the point set composed of neighborhood pixels, and d(m,n) represents the pixel point in the neighborhood.

5. A coding calibration method as claimed in claim 4, characterized in that: After the step 2.2 of performing image enhancement on the first micro-image dot code and the second micro-image dot code to obtain a first enhanced image and a second enhanced image, the method further includes: Using the filtering model: g(x,y)=f(x,y)-α▽ 2 f Filter the first enhanced image and the second enhanced image respectively; wherein g(x, y) represents the filtered image, f(x, y) represents the enhanced image, α represents the adjustment factor, ▽ 2 f=[f(x+1,y)+f(x-1,y)+f(x,y+1)+f(x,y-1)]-4f(x,y).

6. A coding calibration method according to claim 4, characterized in that: The step 2.3 of verifying the first enhanced image and the second enhanced image to obtain a verified information code includes: Step 2.3.1: Obtain a first shooting height of the first enhanced image and a second shooting height of the second enhanced image; Step 2.3.2: adjusting the sizes of the first enhancement image and the second enhancement image according to the first shooting height and the second shooting height respectively to obtain a first calibration image and a second calibration image with the same sizes; Step 2.3.3: Determine whether the micro-image marking codes on the first verification image and the second verification image are consistent; Step 2.3.4: If the micro-image marking codes on the first verification image and the second verification image are consistent, the micro-image information code on the first verification image or the second verification image is taken as the information code after verification; Step 2.3.5: If the micro-image marking codes on the first verification image and the second verification image are inconsistent, a verification error message is output.

7. A coding calibration system, characterized in that: include: A micro-picture point code acquisition module is used to acquire a first micro-picture point code; The micro-image point code has a micro-image mark code and a micro-image information code, and the micro-image mark code has at least one check code point that is the same as the code point on the micro-image information code; A verification module, used for verifying the first micro-image point code to obtain a verified information code; The information code recognition module is used to recognize the calibrated information code to obtain the writing track record of the dot matrix pen.

8. A dot pen device, characterized in that: include: A first camera is used to collect a first micro-image point code at a first height; A second camera is used to collect a second micro-image point code at a second height; An image processor is connected to the first camera and the second camera respectively, and is used to verify and identify the first micro-image dot code and the second micro-image dot code to obtain a writing track record of the dot matrix pen, and transmit the writing track record to a host computer for display; The micro-image point code has a micro-image mark code and a micro-image information code, and the micro-image mark code has at least one check code point that is the same as the code point on the micro-image information code; Judging whether the first micro-picture point code and the second micro-picture point code are normal according to the micro-picture mark code; If the first micro-picture dot code is normal and the second micro-picture dot code is abnormal, the first micro-picture dot code is selected for verification to obtain the verified information code; If the first micro-picture dot code is abnormal and the second micro-picture dot code is normal, the second micro-picture dot code is selected for verification to obtain the verified information code; If both the first micro-picture point code and the second micro-picture point code are abnormal, the first micro-picture point code and the second micro-picture point code are re-acquired and returned.

9. A dot matrix pen device according to claim 8, characterized in that: Also includes: A communication unit, connected to the image processor, for transmitting the writing trajectory record to a host computer; A first lens, arranged in front of the lens of the first camera; The second lens is arranged in front of the lens of the second camera.

10. An electronic device, comprising a bus, a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the transceiver, the memory, and the processor are connected via the bus, wherein: When the computer program is executed by the processor, the steps in the encoding calibration method according to any one of claims 1 to 6 are implemented.

Images