Oak tree growth monitoring device and use method thereof

Abstract

The invention discloses an oak tree growth monitoring device and a method for using the same, and relates to the technical field of tree growth monitoring. The invention solves the problem that, in the process of the monitoring device camera performing growth monitoring on the oak tree, the position setting of the camera of the monitoring device is unreasonable due to the inability to accurately calculate the monitoring height and the monitoring distance, which affects the monitoring of the growth of the oak tree crown by the monitoring device, and is conducive to adaptively adjusting the monitoring height and the monitoring distance of the camera of the monitoring device according to the height of the oak tree crown to be monitored, thereby ensuring the best monitoring viewing angle for the growth monitoring of the oak tree crown during the process of the monitoring device camera performing growth monitoring on the oak tree, ensuring the effective transmission of the monitoring information on the growth of the oak tree crown, and improving the accuracy of the monitoring of the growth of the oak tree crown.

Description

Technical Field

[0001] The invention belongs to the technical field of tree growth monitoring, and in particular is an oak tree growth monitoring device and a use method thereof. Background Art

[0002] Oak tree growth monitoring equipment includes real-time tree growth monitors, urban tree intelligent monitoring systems, ring-type automatic tree growth measuring instruments, etc. The steps of using oak tree growth monitoring equipment include installing the equipment, setting parameters, synchronizing data, etc.;

[0003] Patent publication number CN117685469A discloses an auxiliary device for monitoring the growth of forest trees. It mainly aims at the problem that the fixed angle of the monitoring camera may not cover the entire target area, resulting in the inability to obtain complete and comprehensive monitoring data, and may miss important tree growth information or animal and plant activities. The following technical solution is proposed: including a fixed mechanism for fixed installation, the fixing mechanism includes a fixing frame and a fixing plate; a mounting assembly for installing the monitoring equipment, the mounting assembly is arranged on the top of the fixing plate; a rotating mechanism that drives the monitoring equipment to rotate for comprehensive monitoring, and the rotating mechanism is installed on the fixing mechanism. The present invention can obtain more comprehensive, accurate and detailed monitoring data, and thus better understand the growth of forest trees and animal and plant activities. At the same time, two adjustment methods are driven by a motor, which effectively utilizes energy.

[0004] However, when the growth of the oak tree crown is monitored by the monitoring device camera, the monitoring height and monitoring distance cannot be accurately calculated, resulting in unreasonable position setting of the monitoring device camera, and the optimal monitoring angle for the growth monitoring of the oak tree crown cannot be obtained, which affects the monitoring device's monitoring of the growth of the oak tree crown. Based on this, an oak tree growth monitoring device and a method of using the same are proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an information interaction method for power field operations, which solves the technical problem that when the growth of the oak tree crown is monitored by the monitoring equipment camera, the monitoring height and the monitoring distance cannot be accurately calculated, resulting in unreasonable position setting of the monitoring equipment camera, and the optimal monitoring angle for the growth monitoring of the oak tree crown cannot be obtained, which affects the monitoring equipment's monitoring of the growth of the oak tree crown.

[0006] An oak tree growth monitoring device and a method of using the same, comprising the following steps:

[0007] Step 1: Obtain and record the shooting angle range of the monitoring device camera in advance;

[0008] Step 2: Draw a two-dimensional plane diagram of the shooting angle range of the monitoring device camera;

[0009] Step 3: Process the frontal plane image of one side of the oak tree to be monitored, and then obtain the tree contour edge line of the oak tree to be monitored;

[0010] Step 4: Identify and analyze the contour lines corresponding to the crown and trunk of the oak tree to be monitored, and then obtain the heights to be monitored corresponding to the crown and trunk of the oak tree to be monitored;

[0011] Step 5: Draw an oak tree monitoring schematic diagram based on the two-dimensional plane diagram of the shooting angle range of the monitoring device camera and the corresponding monitoring heights of the crown and trunk of the oak tree to be monitored, and analyze the oak tree monitoring schematic diagram to obtain the corresponding monitoring height and monitoring distance when the monitoring device camera monitors the oak tree crown;

[0012] Step 6: Set the height and distance of the monitoring device camera according to the corresponding monitoring height and monitoring distance when the monitoring device camera monitors the oak tree crown.

[0013] As a further solution of the present invention: the specific method of drawing a two-dimensional plane diagram of the shooting angle range of the monitoring device camera is:

[0014] The monitoring device camera is used as the calibration point of the shooting angle range, and the starting line and the ending line of the shooting angle range are obtained. The ending line is located above the starting line. The calibration point of the shooting angle range is used as the origin. According to the calibration point, the starting line and the ending line of the shooting angle range, a two-dimensional plane diagram of the shooting angle range of the monitoring device camera is drawn. At the same time, the angle between the starting line and the ending line of the shooting angle range is defined as the shooting angle value β of the shooting angle range.

[0015] As a further solution of the present invention, a specific method for obtaining the tree outline of the oak tree to be monitored is:

[0016] The frontal plane image of one side of the oak tree to be monitored is captured by the monitoring device camera, and then the acquired frontal plane image is processed by using image processing technology to obtain the tree contour edge line of the oak tree to be monitored.

[0017] As a further solution of the present invention, the specific method of obtaining the heights to be monitored corresponding to the crown and trunk of the oak tree to be monitored is:

[0018] Identify and segment the crown and trunk parts of the tree contour line to obtain the contour lines corresponding to the crown and trunk parts respectively, analyze the contour line of the crown part to obtain the corresponding monitoring height of the crown part, and analyze the contour line of the trunk part to obtain the corresponding monitoring height of the crown part.

[0019] As a further solution of the present invention, the specific method of obtaining the height to be monitored corresponding to the crown part is:

[0020] Get the coordinates of the highest and lowest points on the crown outline, and mark them as GA (GAx, GAy) and GB (GBx, GBy), respectively. , calculate the distance between the highest point GA (GAx, GAy) and the lowest point GB (GBx, GBy), and define it as the height DA corresponding to the crown part that needs to be monitored.

[0021] As a further solution of the present invention, the specific method of obtaining the height to be monitored corresponding to the crown part is:

[0022] Connect the two side lines of the outline of the trunk to establish an outline rectangle, and mark the four endpoints of the outline rectangle as J1A (J1Ax, J1Ay), J2A (J2Ax, J2Ay), J1B (J1Bx, J1By), and J2B (J2Bx, J2By) in order from left to back and from top to bottom, where J1A (J1Ax, J1Ay) and J2A (J2Ax, J2Ay) are the two endpoints on the upper side line of the outline rectangle, and J1B (J1Bx, J1By) and J2B (J2Bx, J2By) are the two endpoints on the lower side line of the outline rectangle. According to the coordinates of the endpoints on the upper and lower side lines of the outline rectangle, the coordinates of the two midpoints ZA (ZAx, ZAy) and ZB (ZBx, ZBy) of the outline rectangle are obtained, and the distance calculation formula is used. , calculate the distance between the midpoints ZA (ZAx, ZAy) and ZB (ZBx, ZBy), and define it as the height DB of the trunk part that needs to be monitored.

[0023] As a further solution of the present invention: a specific method for obtaining the height to be monitored and the distance to be monitored corresponding to the camera of the monitoring device when monitoring the crown of the oak tree is:

[0024] According to the origin of the two-dimensional plane diagram of the shooting angle range as the endpoint 0, a straight line L is made parallel to the horizon, and the shooting angle value β of the shooting angle range is evenly divided into two equal sub-ranges through the straight line L, and the range angles of the two sub-ranges are equal to ½β. A straight line E perpendicular to the straight line L is made in the shooting angle range of the two-dimensional plane diagram, and the two endpoints R1 and R2 of the straight line E are respectively located at the starting line and the ending line of the shooting angle range, R1 is located at the starting line of the shooting angle range, and R2 is located at the ending line of the shooting angle range;

[0025] The value of the height DB to be monitored corresponding to the trunk is defined as the height HA between the end point R1 of the straight line E and the horizon, and the value of the height DA to be monitored corresponding to the crown is defined as the length HB of the straight line E, and then the height to be monitored is established to draw a schematic diagram for oak tree monitoring;

[0026] The intersection of the straight line E and the straight line L is marked as G, and the points O, R1 and G are connected to form a right triangle. Since the straight line E and the straight line L are perpendicular, ∠G is a right angle. Since the range angles of the two sub-ranges are equal to ½β, the angle of ∠O in the right triangle is ½β, and the angle of ∠R1 is 90°-(½β). According to the definition of trigonometric functions, ∠O, ∠G and ∠R1 in the right triangle are analyzed to obtain the specific value of OG, which is used as the monitoring distance MA corresponding to the monitoring device camera when monitoring the oak tree crown. At the same time, through , calculate and obtain the height MB to be monitored corresponding to when the monitoring equipment camera monitors the oak tree crown.

[0027] As a further solution of the present invention: according to the definition of trigonometric functions, ∠O, ∠G and ∠R1 in the right triangle are analyzed, and the specific method for obtaining the specific value of OG is as follows:

[0028] Mark the intersection point between the straight line E and the straight line L as G, connect the points O, R1 and G to form a right triangle △R1OG. Since the straight line E and the straight line L are perpendicular, ∠G is a right angle in the right triangle △R1OG. Since the range angles of the two sub-ranges are equal to ½β, the angle of ∠O in the right triangle △R1OG is ½β, and the angle of ∠R1 is 90°-(½β).

[0029] According to the definition of trigonometric functions, since, ,Right now ,so, , where HB=DA, due to ,Right now ,so, ;

[0030] By looking up the table, you can get and Substitute the specific value of into the above OG calculation formula to obtain the specific value of OG.

[0031] An oak tree growth monitoring device, comprising:

[0032] A data acquisition module is used to acquire the shooting angle range of the monitoring device camera;

[0033] The image processing module draws a two-dimensional plane map of the shooting angle range of the monitoring device camera, and processes the front view plane image of one side of the oak tree to be monitored, thereby obtaining the tree contour edge line of the oak tree to be monitored;

[0034] The module for acquiring the height to be monitored obtains the height to be monitored corresponding to the crown and trunk of the oak tree to be monitored by analyzing the contour lines corresponding to the crown and trunk of the oak tree to be monitored;

[0035] The module for acquiring the height and distance to be monitored draws a schematic diagram for monitoring the oak tree according to the two-dimensional plane diagram of the shooting angle range of the monitoring device camera and the heights to be monitored corresponding to the crown and trunk of the oak tree to be monitored, and analyzes it to obtain the height and distance to be monitored corresponding to the crown of the oak tree when the monitoring device camera monitors the crown of the oak tree;

[0036] The setting module sets the height and distance of the monitoring device camera according to the corresponding monitoring height and monitoring distance when the monitoring device camera monitors the oak tree crown.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The present invention solves the problem that, during the process of the monitoring device camera performing growth monitoring of the oak tree, the position setting of the camera of the monitoring device is unreasonable due to the inability to accurately calculate the monitoring height and the monitoring distance, thus affecting the monitoring of the growth of the oak tree crown by the monitoring device, by setting the monitoring height and the monitoring distance of the camera of the monitoring device when monitoring the oak tree crown according to the monitoring distance and the monitoring height corresponding to the camera of the monitoring device when monitoring the oak tree crown. The present invention is beneficial to adaptively adjust the monitoring height and the monitoring distance of the camera of the monitoring device according to the height of the oak tree crown to be monitored, thereby ensuring the best monitoring angle for the growth monitoring of the oak tree crown during the process of the growth monitoring of the oak tree by the camera of the monitoring device, ensuring the effective transmission of the monitoring information of the oak tree crown growth, and improving the accuracy of the monitoring of the growth of the oak tree crown. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the system framework structure of the present invention;

[0040] Figure 2 It is a schematic diagram of the structure of a right triangle of the present invention;

[0041] Figure 3 It is a structural schematic diagram of the oak tree growth monitoring device of the present invention. DETAILED DESCRIPTION

[0042] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Example 1: Please refer to Figure 1-Figure 2 The present application provides a method for using an oak tree growth monitoring device, comprising the following steps:

[0044] Step 1: Obtain and record the shooting angle range of the monitoring device camera in advance;

[0045] It should be noted that the shooting angle range of the monitoring device camera is obtained from the product manual or official information of the monitoring device. The above data is existing and arbitrarily obtained, so I will not elaborate on it here:

[0046] Step 2: Draw a two-dimensional plane diagram of the shooting angle range of the monitoring device camera. The specific method is as follows:

[0047] The camera of the monitoring device is used as the calibration point of the shooting angle range, and the starting line and the ending line of the shooting angle range are obtained. The ending line is located above the starting line. The calibration point of the shooting angle range is used as the origin. According to the calibration point, the starting line and the ending line of the shooting angle range, a two-dimensional plane diagram of the shooting angle range of the camera of the monitoring device is drawn. At the same time, the angle between the starting line and the ending line of the shooting angle range is defined as the shooting angle value β of the shooting angle range;

[0048] By drawing a two-dimensional plane diagram of the shooting angle range of the monitoring device camera according to the calibration points, starting line and ending line of the shooting angle range, it is helpful to have a more intuitive understanding of the monitoring capability of the monitoring device camera;

[0049] Step 3: Obtain a frontal plane image of one side of the oak tree to be monitored, and process the image to obtain the tree contour edge line of the oak tree to be monitored. The specific method is as follows:

[0050] The frontal plane image of one side of the oak tree to be monitored is photographed and acquired by using the monitoring equipment camera, and then the acquired frontal plane image is processed by using image processing technology to obtain the tree contour edge line of the oak tree to be monitored;

[0051] It should be noted that the image processing technology here includes but is not limited to edge detection algorithms, such as Canny edge detection algorithm, Sobel edge detection algorithm, etc., which analyze and calculate the pixel values ​​of the image, identify the edges of the objects in the image, and thus extract the tree contour edge lines of the oak tree to be monitored. The above technologies are existing and mature technologies, so no further description is made here;

[0052] Step 4: Identify and analyze the contour lines corresponding to the crown and trunk of the oak tree to be monitored, and then obtain the heights to be monitored corresponding to the crown and trunk of the oak tree to be monitored. The specific method is as follows:

[0053] Identify and segment the crown and trunk parts of the tree contour edge line to obtain the contour lines corresponding to the crown and trunk parts respectively;

[0054] Analyze the outline of the tree crown to obtain the height that needs to be monitored. The specific method is as follows:

[0055] Get the coordinates of the highest and lowest points on the crown outline, and mark them as GA (GAx, GAy) and GB (GBx, GBy), respectively. , calculate the distance between the highest point GA (GAx, GAy) and the lowest point GB (GBx, GBy), and define it as the height DA corresponding to the canopy that needs to be monitored;

[0056] Analyze the outline of the trunk to obtain the corresponding height of the crown that needs to be monitored. The specific method is as follows:

[0057] Connect the two side lines of the outline of the trunk to establish an outline rectangle, and mark the four endpoints of the outline rectangle as J1A (J1Ax, J1Ay), J2A (J2Ax, J2Ay), J1B (J1Bx, J1By), and J2B (J2Bx, J2By) in order from left to back and from top to bottom, where J1A (J1Ax, J1Ay) and J2A (J2Ax, J2Ay) are the two endpoints on the upper side line of the outline rectangle, and J1B (J1Bx, J1By) and J2B (J2Bx, J2By) are the two endpoints on the lower side line of the outline rectangle. According to the coordinates of the endpoints on the upper and lower side lines of the outline rectangle, the coordinates of the two midpoints ZA (ZAx, ZAy) and ZB (ZBx, ZBy) of the outline rectangle are obtained, and the distance calculation formula is used. , calculate the distance between the midpoints ZA (ZAx, ZAy) and ZB (ZBx, ZBy), and define it as the height DB of the trunk part to be monitored;

[0058] The specific method of obtaining the coordinates of the two midpoints ZA and ZB of the outline rectangle according to the coordinates of the endpoints on the upper and lower sides of the outline rectangle is:

[0059] The mean values ​​of the abscissa and ordinate of the endpoints J1A and J2A are used as the abscissa and ordinate of the midpoint ZA on the upper side of the outline rectangle, and the mean values ​​of the abscissa and ordinate of the endpoints J1B and J2B are used as the abscissa and ordinate of the midpoint ZB on the lower side of the outline rectangle;

[0060] Step 5: Draw an oak tree monitoring schematic diagram based on the two-dimensional plane diagram of the camera shooting angle range of the monitoring equipment and the corresponding monitoring heights of the crown and trunk of the oak tree to be monitored. Analyze the oak tree monitoring schematic diagram to obtain the corresponding monitoring height and monitoring distance when the camera of the monitoring equipment monitors the oak tree crown. The specific method is as follows:

[0061] According to the origin of the two-dimensional plane diagram of the shooting angle range as the endpoint 0, a straight line L is made parallel to the horizon, and the shooting angle value β of the shooting angle range is evenly divided into two equal sub-ranges through the straight line L, and the range angles of the two sub-ranges are equal to ½β. A straight line E perpendicular to the straight line L is made in the shooting angle range of the two-dimensional plane diagram, and the two endpoints R1 and R2 of the straight line E are respectively located at the starting line and the ending line of the shooting angle range, R1 is located at the starting line of the shooting angle range, and R2 is located at the ending line of the shooting angle range;

[0062] The value of the height DB to be monitored corresponding to the trunk is defined as the height HA between the end point R1 of the straight line E and the horizon;

[0063] The value of the height DA required for monitoring corresponding to the crown part is defined as the length HB of the straight line E, and then the height required for monitoring is established to draw a schematic diagram for monitoring oak trees;

[0064] Mark the intersection point between the straight line E and the straight line L as G, connect the points O, R1 and G to form a right triangle △R1OG. Since the straight line E and the straight line L are perpendicular, ∠G is a right angle in the right triangle △R1OG. Since the range angles of the two sub-ranges are equal to ½β, the angle of ∠O in the right triangle △R1OG is ½β, and the angle of ∠R1 is 90°-(½β).

[0065] According to the definition of trigonometric functions, since, ,Right now ,so, , where HB=DA, due to ,Right now ,so, ;

[0066] By looking up the table, you can get and The specific value of OG can be substituted into the above calculation formula to calculate the specific value of OG, which is used as the monitoring distance MA corresponding to the monitoring device camera when monitoring the oak tree crown. , calculate and obtain the height MB to be monitored corresponding to the camera of the monitoring equipment when monitoring the crown of the oak tree;

[0067] For example, assuming θ=60°, then ½θ=30°. , , if L=4, then , ;

[0068] Step 6: according to the monitoring distance MA and the monitoring height MA corresponding to the monitoring device camera when monitoring the oak tree crown; the height and distance of the monitoring device camera when monitoring the oak tree crown are set;

[0069] The problem of unreasonable position setting of the camera of the monitoring equipment affecting the growth monitoring of the oak tree crown by the monitoring equipment camera due to the inability to accurately calculate the monitoring height and the monitoring distance during the growth monitoring of the oak tree by the monitoring equipment camera is solved. The problem is that the height and distance of the camera of the monitoring equipment can be adaptively adjusted according to the height of the oak tree crown to be monitored, thereby ensuring the best monitoring angle for the growth monitoring of the oak tree crown during the growth monitoring of the oak tree by the camera of the monitoring equipment, ensuring the effective transmission of the monitoring information of the oak tree crown growth, and improving the accuracy of the monitoring of the oak tree crown growth.

[0070] Example 2: Please refer to Figure 3 As the second embodiment of the present invention, this embodiment also includes an oak tree growth monitoring device, which is used to implement the method for using the oak tree growth monitoring device disclosed above, specifically including:

[0071] The data acquisition module acquires and records the shooting angle range of the monitoring device camera through the product manual or official information of the monitoring device;

[0072] The image processing module draws a two-dimensional plane diagram of the shooting angle range of the monitoring device camera according to the calibration points, starting line and ending line of the shooting angle range, and processes the front view plane image of one side of the oak tree to be monitored by image processing technology, thereby obtaining the tree contour edge line of the oak tree to be monitored;

[0073] The module for acquiring the height to be monitored identifies and segments the crown and trunk parts of the tree contour edge line, obtains the contour lines corresponding to the crown and trunk parts respectively, analyzes the contour lines corresponding to the crown and trunk parts of the oak tree to be monitored, and obtains the height to be monitored corresponding to the crown and trunk of the oak tree to be monitored respectively;

[0074] The module for acquiring the height and distance to be monitored draws a schematic diagram for monitoring the oak tree according to the two-dimensional plane diagram of the shooting angle range of the monitoring device camera and the heights to be monitored corresponding to the crown and trunk of the oak tree to be monitored, and analyzes it to obtain the height and distance to be monitored corresponding to the crown of the oak tree when the monitoring device camera monitors the crown of the oak tree;

[0075] The setting module sets the height and distance of the monitoring device camera according to the corresponding monitoring height and monitoring distance when the monitoring device camera monitors the oak tree crown.

[0076] Embodiment 3: As the embodiment 3 of the present invention, when the present application is implemented specifically, compared with the embodiments 1 and 2, the technical solution of this embodiment is to combine the solutions of the above-mentioned embodiments 1 and 2 for implementation.

[0077] The above formulas are all dimensionless and numerical calculations. The formula is a formula for the most recent real situation obtained by collecting a large amount of data and performing software simulation. The preset parameters and thresholds in the formula are set by technicians in this field according to actual conditions.

[0078] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An oak tree growth monitoring device and a method of using the same, characterized in that: The following steps are involved: Step 1: Obtain and record the shooting angle range of the monitoring device camera in advance; Step 2: Draw a two-dimensional plane diagram of the shooting angle range of the monitoring device camera; Step 3: Process the frontal plane image of one side of the oak tree to be monitored, and then obtain the tree contour edge line of the oak tree to be monitored; Step 4: Identify and analyze the contour lines corresponding to the crown and trunk of the oak tree to be monitored, and then obtain the heights to be monitored corresponding to the crown and trunk of the oak tree to be monitored; Step 5: Draw an oak tree monitoring schematic diagram based on the two-dimensional plane diagram of the shooting angle range of the monitoring device camera and the corresponding monitoring heights of the crown and trunk of the oak tree to be monitored, and analyze the oak tree monitoring schematic diagram to obtain the corresponding monitoring height and monitoring distance when the monitoring device camera monitors the oak tree crown; Step 6: Set the height and distance of the monitoring device camera according to the height and distance to be monitored when the monitoring device camera monitors the crown of the oak tree; The specific method of drawing a two-dimensional plane diagram of the shooting angle range of the monitoring device camera is: The camera of the monitoring device is used as the calibration point of the shooting angle range, and the starting line and the ending line of the shooting angle range are obtained. The ending line is located above the starting line. The calibration point of the shooting angle range is used as the origin. According to the calibration point, the starting line and the ending line of the shooting angle range, a two-dimensional plane diagram of the shooting angle range of the camera of the monitoring device is drawn. At the same time, the angle between the starting line and the ending line of the shooting angle range is defined as the shooting angle value β of the shooting angle range; The specific method of obtaining the tree outline of the oak tree to be monitored is: The frontal plane image of one side of the oak tree to be monitored is photographed and acquired by using the monitoring equipment camera, and then the acquired frontal plane image is processed by using image processing technology to obtain the tree contour edge line of the oak tree to be monitored; The specific method of obtaining the corresponding monitoring heights of the crown and trunk of the oak tree to be monitored is: Identify and segment the crown and trunk parts of the tree outline to obtain the corresponding contour lines of the crown and trunk parts respectively, analyze the outline line of the crown part to obtain the corresponding monitoring height of the crown part, and analyze the outline line of the trunk part to obtain the corresponding monitoring height of the trunk part; The specific method of obtaining the height of the tree crown corresponding to the monitoring height is: Get the coordinates of the highest and lowest points on the crown outline, and mark them as GA (GAx, GAy) and GB (GBx, GBy), respectively. , calculate the distance between the highest point GA (GAx, GAy) and the lowest point GB (GBx, GBy), and define it as the height DA corresponding to the canopy that needs to be monitored; The specific method of obtaining the height to be monitored corresponding to the trunk part is: Connect the two side lines of the outline of the trunk to establish an outline rectangle, and mark the four endpoints of the outline rectangle as J1A (J1Ax, J1Ay), J2A (J2Ax, J2Ay), J1B (J1Bx, J1By), and J2B (J2Bx, J2By) in order from left to back and from top to bottom, where J1A (J1Ax, J1Ay) and J2A (J2Ax, J2Ay) are the two endpoints on the upper side line of the outline rectangle, and J1B (J1Bx, J1By) and J2B (J2Bx, J2By) are the two endpoints on the lower side line of the outline rectangle. According to the coordinates of the endpoints on the upper and lower side lines of the outline rectangle, the coordinates of the two midpoints ZA (ZAx, ZAy) and ZB (ZBx, ZBy) of the outline rectangle are obtained, and the distance calculation formula is used. , calculate the distance between the midpoints ZA (ZAx, ZAy) and ZB (ZBx, ZBy), and define it as the height DB of the trunk part to be monitored; The specific method for obtaining the height and distance to be monitored corresponding to the monitoring device camera when monitoring the oak tree crown is as follows: According to the origin of the two-dimensional plane diagram of the shooting angle range as the endpoint 0, a straight line L is made parallel to the horizon, and the shooting angle value β of the shooting angle range is evenly divided into two equal sub-ranges through the straight line L, and the range angles of the two sub-ranges are equal to ½β. A straight line E perpendicular to the straight line L is made in the shooting angle range of the two-dimensional plane diagram, and the two endpoints R1 and R2 of the straight line E are respectively located at the starting line and the ending line of the shooting angle range, R1 is located at the starting line of the shooting angle range, and R2 is located at the ending line of the shooting angle range; The value of the height DB to be monitored corresponding to the trunk is defined as the height HA between the end point R1 of the straight line E and the horizon, and the value of the height DA to be monitored corresponding to the crown is defined as the length HB of the straight line E, and then the height to be monitored is established to draw a schematic diagram for oak tree monitoring; The intersection of the straight line E and the straight line L is marked as G, and the points O, R1 and G are connected to form a right triangle. Since the straight line E and the straight line L are perpendicular, ∠G is a right angle. Since the range angles of the two sub-ranges are equal to ½β, the angle of ∠O in the right triangle is ½β, and the angle of ∠R1 is 90°-(½β). According to the definition of trigonometric functions, ∠O, ∠G and ∠R1 in the right triangle are analyzed to obtain the specific value of OG, which is used as the monitoring distance MA corresponding to the monitoring device camera when monitoring the oak tree crown. At the same time, through , calculate and obtain the height MB to be monitored corresponding to when the monitoring equipment camera monitors the crown of the oak tree.

2. The oak tree growth monitoring device and the method of using the same according to claim 1, characterized in that: The specific way to obtain the specific value of OG is: Mark the intersection point between the straight line E and the straight line L as G, connect the points O, R1 and G to form a right triangle △R1OG. Since the straight line E and the straight line L are perpendicular, ∠G is a right angle in the right triangle △R1OG. Since the range angles of the two sub-ranges are equal to ½β, the angle of ∠O in the right triangle △R1OG is ½β, and the angle of ∠R1 is 90°-(½β). According to the definition of trigonometric functions, since, ,Right now ,so, , where HB=DA, due to ,Right now ,so, ; By looking up the table, you can get and Substitute the specific value of into the above OG calculation formula to obtain the specific value of OG.

3. An oak tree growth monitoring device, the oak tree growth monitoring device is used to implement the oak tree growth monitoring device and the use method thereof as described in any one of claims 1 to 2, characterized in that: include: A data acquisition module is used to acquire the shooting angle range of the monitoring device camera; The image processing module draws a two-dimensional plane map of the shooting angle range of the monitoring device camera, and processes the front view plane image of one side of the oak tree to be monitored, thereby obtaining the tree contour edge line of the oak tree to be monitored; The module for acquiring the height to be monitored obtains the height to be monitored corresponding to the crown and trunk of the oak tree to be monitored by analyzing the contour lines corresponding to the crown and trunk of the oak tree to be monitored; The module for acquiring the height and distance to be monitored draws a schematic diagram for monitoring the oak tree according to the two-dimensional plane diagram of the shooting angle range of the monitoring device camera and the heights to be monitored corresponding to the crown and trunk of the oak tree to be monitored, and analyzes it to obtain the height and distance to be monitored corresponding to the crown of the oak tree when the monitoring device camera monitors the crown of the oak tree; The setting module sets the height and distance of the monitoring device camera according to the corresponding monitoring height and monitoring distance when the monitoring device camera monitors the oak tree crown.

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