Analysis control system and method of electronic rearview mirror

Abstract

The invention provides an analysis control system and method for an electronic rearview mirror, and relates to the technical field of automobiles, and the analysis control system comprises a reference determination unit which is used for obtaining an inter-eye distance line data set in the posture correcting and adjusting process, determining an inter-eye distance line reference value according to the inter-eye distance line data set, and determining the posture of the electronic rearview mirror based on the inter-eye distance line reference value. Obtaining initial adjustment data of a display picture of the electronic rearview mirror; the state monitoring unit is used for monitoring the moving state of the inter-eye distance line; and the modeling unit is used for establishing a real-time dynamic linear model of the interocular distance line according to the interocular distance line reference value when the interocular distance line moving state is an electronic rearview mirror viewing state. According to the analysis control system and method provided by the invention, the switchability of the display picture when the electronic rearview mirror is viewed is realized, and the viewing experience of the electronic rearview mirror is improved.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to an analysis control system and method for an electronic rearview mirror. Background Art

[0002] An electronic rearview mirror is an indirect vision device that uses a system consisting of a camera and a monitor to obtain a specified field of view. It includes electronic devices such as a high-definition camera, a digital visual processing system, a safety system, and an LCD display, and is a new type of rearview mirror that can replace traditional optical rearview mirrors.

[0003] In the existing electronic rearview mirror, users, especially beginners, cannot adapt well to the fixed rearview display screen. Therefore, when viewing the rearview mirror display screen, they cannot obtain a good dynamic switching experience of the field of view according to the changes in the human viewing state, which increases the awkwardness of people when using the electronic rearview mirror. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an analysis and control system and method for an electronic rearview mirror, which is used to solve the problem in the prior art that when using an electronic rearview mirror, the users of the electronic rearview mirror, especially the novice users, are unable to adapt well to the fixed display rearview display screen, and thus cannot obtain a good dynamic switching experience in the field of view according to the changes in the human body's viewing state when viewing the display screen of the rearview mirror, thereby increasing the awkwardness of people when using the electronic rearview mirror.

[0005] To achieve the above-mentioned and other related objectives, the present invention provides an analysis and control system for an electronic rearview mirror, comprising: a reference determination unit for acquiring an eye distance line dataset during posture calibration, determining an eye distance line reference value based on the eye distance line dataset, and obtaining initial adjustment data for an electronic rearview mirror display screen based on the eye distance line reference value; a state monitoring unit for monitoring the movement state of the eye distance line; a modeling unit for establishing a real-time dynamic linear model of the eye distance line based on the eye distance line reference value when the movement state of the eye distance line is a state for viewing the electronic rearview mirror; and a field of view adjustment unit for switching the electronic rearview mirror display screen based on the initial adjustment data to a desired field of view area based on the viewing state of the electronic rearview mirror display screen corresponding to the eye distance line in the real-time dynamic model.

[0006] In one embodiment of the present invention, the benchmark determination unit includes: a data set creation module for scanning a human head image in real time to obtain an eye distance line L of the human head; i , establish the eye distance line data set [L1, L2, ..., L i]; and a reference locking module for filtering out the eye spacing line dataset [L1, L2, ..., L i ] the maximum interocular distance line L max As the eye distance reference value, and based on the position of the electronic rearview mirror display area, determine the eye distance reference value L max The corresponding center point reference coordinates (x max ,y max , z max ).

[0007] In one embodiment of the present invention, the data set creation module includes: an eye determination module for determining the human head image P i The left eye coordinate (x eLi ,y eLi , z eLi ) and right eye coordinates (x eRi ,y eRi , z eRi ); and an eye distance calculation module for calculating the distance between the left eye and the right eye according to the left eye coordinate (x eLi ,y eLi , z eLi ) and right eye coordinates (x eRi ,y eRi , z eRi ), calculate the eye spacing line of the human head Among them, L max ≥L i .

[0008] In one embodiment of the present invention, the interocular distance reference value L max The corresponding left eye coordinates (x eLmax ,y eLmax , z eLmax ) and right eye coordinates (x eRmax ,y eRmax , z eRmax ) is kept linearly parallel to the plane where the electronic rearview mirror display area is located.

[0009] In one embodiment of the present invention, the state monitoring unit includes: a distance calculation module for calculating the eye distance line L when the human head moves. j The center point coordinates (x j ,y j , z j ) and the center point reference coordinates (x max ,y max , z max ) to get the moving distance between the two And the state judgment module is used to judge the moving distance △X jmaxWhether it exceeds the set distance value X0, if △X≥X0, it is determined that the movement state of the eye distance line is the state of checking the electronic rearview mirror.

[0010] In one embodiment of the present invention, the modeling unit includes: a reference modeling module for modeling the eye distance reference value L max The corresponding left eye coordinates (x eLmax ,y eLmax , z eLmax )、right eye coordinates (x eRma , x y eRma , x z eRmax ) and the center point reference coordinates (x max ,y max , z max ), establish an eye spacing reference linear model; and a dynamic modeling module for viewing the eye spacing line L when the electronic rearview mirror moves according to the eye spacing line state. j The left eye coordinate (x eLj ,y eLj , z eLj )、right eye coordinates (x eR , j y eR , j z eRj ) and the center point coordinates (x j ,y j , z j ), based on the eye spacing baseline linear model, establish the eye spacing line L j Real-time dynamic model.

[0011] In one embodiment of the present invention, the field of view adjustment unit includes: a first state confirmation module for monitoring the movement direction of the human head along the x-axis when viewing the electronic rearview mirror, and obtaining the x-direction adjustment parameter x of the electronic rearview mirror display screen. T The second state confirmation module is used to monitor the movement direction of the human head along the y-axis when viewing the electronic rearview mirror, and obtain the z-direction adjustment parameter z of the electronic rearview mirror display screen T The third state confirmation module is used to monitor the movement direction of the human head along the z axis when viewing the electronic rearview mirror, and obtain the zoom adjustment parameter y of the electronic rearview mirror display screen T ; Adjustment control module, used to adjust the obtained x-axis parameter x T , z-axis adjustment parameter z T and scaling adjustment parameter y T Adjust the electronic rearview mirror display screen respectively to obtain the field of view area to be viewed.

[0012] In one embodiment of the present invention, the first status confirmation module includes:max -x j When >0, it is determined that the human head is moving in the positive direction of the x-axis, and the x-direction adjustment parameter x is obtained to adjust the electronic rearview mirror display screen to the reverse direction of the x-axis. T ; Reverse control module, used when x max -x j <0, it is determined that the human head is moving in the reverse direction of the x-axis, and the x-direction adjustment parameter x is obtained to adjust the electronic rearview mirror display screen to the positive direction of the x-axis. T The second state confirmation module includes: when z max -z j When >0, it is determined that the human head is moving in the positive direction of the z-axis, and the z-direction adjustment parameter z for moving the electronic rearview mirror display screen in the reverse direction of the z-axis is obtained. T ; When z max -z j <0, it is determined that the human head is moving in the reverse direction of the z-axis, and the z-direction adjustment parameter z is obtained to move the electronic rearview mirror display screen in the positive direction of the z-axis. T ; The third state confirmation module includes: when y max -y j When y is greater than 0, it is determined that the human head is moving in the positive direction of the y-axis, and the zoom adjustment parameter y for magnifying the electronic rearview mirror display is obtained. T When y max -y j <0, it is determined that the human head is moving in the opposite direction of the y-axis, and the zoom adjustment parameter y is obtained to reduce the display screen of the electronic rearview mirror. T .

[0013] In one embodiment of the present invention, the first state confirmation module includes: according to the maximum adjustment amount x along the x-axis from the center of the electronic rearview mirror display screen Tmax and the maximum movement of the human head along the x-axis x Cmax , determine the x-axis adjustment parameter The second state confirmation module includes: Tmax and the maximum movement of the human head along the z axis z Cmax , determine the z-axis adjustment parameters The third state confirmation module includes: Tmax and the maximum movement of the human head along the y-axis y Cmax , determine the scaling adjustment parameters

[0014] The present invention also provides an analysis and control method for an electronic rearview mirror, comprising the following steps: obtaining an eye distance line data set during a posture calibration process, determining an eye distance line reference value based on the eye distance line data set, and obtaining initial adjustment data for an electronic rearview mirror display screen based on the eye distance line reference value; monitoring a movement state of the eye distance line; when the movement state of the eye distance line is a state for viewing the electronic rearview mirror, establishing a real-time dynamic linear model of the eye distance line based on the eye distance line reference value; and switching the electronic rearview mirror display screen based on the initial adjustment data to a desired viewing field of view according to the viewing state of the electronic rearview mirror display screen corresponding to the eye distance line in the real-time dynamic model.

[0015] As described above, the present invention provides an analysis and control system and method for an electronic rearview mirror, which has the following beneficial effects: An interocular distance line dataset is established based on interocular distance line data during the posture adjustment process when viewing the electronic rearview mirror, and the interocular distance line value with the largest value in the interocular distance line dataset is determined as a reference interocular distance line value. This interocular distance line reference value is then used as the optimal viewing angle for viewing the electronic rearview mirror, and the electronic rearview mirror display is adjusted based on this interocular distance line reference value, so that the electronic rearview mirror display shows the optimal viewing area that conforms to driving habits. When viewing the electronic rearview mirror based on the calibrated interocular distance line reference value, the movement state of the interocular distance line, i.e., the movement state of the human head, is also detected. When the movement state of the interocular distance line is determined to be in the state of viewing the electronic rearview mirror, a real-time dynamic linear model of the interocular distance line is established. This real-time dynamic linear model facilitates rapid and accurate determination of the interocular distance line movement viewing state based on the real-time dynamic linear model, thereby adjusting the electronic rearview mirror's adaptive viewing area based on the corresponding viewing state to meet personalized viewing requirements for different viewing areas on the electronic rearview mirror display. Through the above-mentioned analysis and control method, it is easy to realize the simulated analysis and display of the electronic rearview mirror based on the physical rearview mirror, that is, the display screen is adjusted in real time when the human head moves left and right, up and down, and approaches to view the rearview mirror, so as to improve the switchability of the display screen when viewing the electronic rearview mirror. When the driver views the rearview mirror, it is provided with the convenience of switching the rearview mirror display screen based on the habit of viewing the physical rearview mirror, thereby improving the rearview mirror viewing experience while reducing blind spots. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an architectural diagram of the analysis control system of the present invention.

[0017] Figure 2 Shown is a schematic diagram of an electronic rearview mirror display screen under initial adjustment data in a preferred embodiment of the present invention.

[0018] Figure 3Shown is a schematic diagram of an electronic rearview mirror display screen when viewing the electronic rearview mirror in a preferred embodiment of the present invention.

[0019] Figure 4 The figure is a flow chart of the analysis control method of the present invention. DETAILED DESCRIPTION

[0020] See also Figure 1 In one embodiment of the present invention, an analysis and control system for an electronic rearview mirror is provided, comprising: a reference determination unit for acquiring an eye distance line dataset during a posture calibration process, determining an eye distance line reference value based on the eye distance line dataset, and obtaining initial adjustment data for an electronic rearview mirror display screen based on the eye distance line reference value; a state monitoring unit for monitoring a movement state of the eye distance line; a modeling unit for establishing a real-time dynamic linear model of the eye distance line based on the eye distance line reference value when the movement state of the eye distance line is a state for viewing the electronic rearview mirror; and a field of view adjustment unit for switching the electronic rearview mirror display screen based on the initial adjustment data to a desired field of view area based on the viewing state of the electronic rearview mirror display screen corresponding to the eye distance line in the real-time dynamic model.

[0021] In the electronic rearview mirror analysis and control system of the present invention, a benchmark determination unit can be used to construct an interocular distance line dataset based on interocular distance line data. When acquiring the interocular distance line data, a calibration function for configuring an interocular distance line benchmark value can be actively enabled, and interocular distance line data can be collected according to relevant configuration rules to construct the interocular distance line dataset. The interocular distance line can be the distance between the left and right eyes of a human head, and can be expressed as the distance from the leftmost point of the left eye to the rightmost point of the right eye, the distance from the center of the left eye to the center of the right eye, or the distance from the rightmost point of the left eye to the leftmost point of the right eye. After obtaining the interocular distance dataset, the interocular distance line value with the largest value in the interocular distance dataset is extracted as the interocular distance line benchmark value. Based on this interocular distance line benchmark value, the electronic camera display is adjusted to achieve an optimal display viewing angle. When determining this optimal display viewing angle, initial adjustment data obtained during the adjustment is further determined. After obtaining the interocular distance line reference value, the state monitoring unit can detect the movement state of the interocular distance line based on the interocular distance line reference value, thereby further determining whether the movement state of the interocular distance line corresponds to viewing the electronic rearview mirror. Furthermore, the modeling unit can establish a real-time dynamic linear model of the interocular distance line when the movement state corresponds to viewing the electronic rearview mirror, thereby intuitively displaying the real-time movement state of the interocular distance line. Furthermore, before establishing the real-time dynamic linear model, a linear model corresponding to the interocular distance line reference value can be pre-established to enable comparative analysis with the real-time dynamic linear model. The field of view adjustment unit can determine the corresponding viewing state when viewing the electronic rearview mirror display based on the changes in the interocular distance line in the real-time dynamic linear model. This viewing state can be expressed as the distance from the electronic rearview mirror display screen, the left-right offset from the electronic rearview mirror, the vertical offset from the electronic rearview mirror, and so on. Furthermore, based on the viewing state, an adjustment plan for the electronic rearview mirror display based on the initial adjustment data is further determined, and the display angle of the electronic rearview mirror display is switched according to the adjustment plan to obtain the field of view area corresponding to the viewing state. Of course, it can also be understood as the predicted field of view area that may be desired to be viewed in the viewing state. Through the above-mentioned analysis and control system, it is easy to realize the simulation analysis and display of the electronic rearview mirror based on the physical rearview mirror, that is, the display image is adjusted in real time when the human head moves left and right, up and down, and approaches the rearview mirror, so as to improve the switchability of the display image when viewing the electronic rearview mirror, and provide the driver with convenient switching of the rearview mirror display image based on the habit of viewing the physical rearview mirror when viewing the rearview mirror, thereby improving the rearview mirror viewing experience while reducing the blind spot of the field of view.

[0022] Specifically, when viewing the electronic rearview mirror, the display size of the corresponding area in the electronic rearview mirror display can be further enlarged or reduced based on the proximity or distance of the human head to the electronic rearview mirror display. Preferably, the electronic rearview mirror has a maximum display area in the wide-angle state, and the display area of ​​the electronic rearview mirror display corresponding to the initial adjustment data is smaller than the display area in the wide-angle state.

[0023] In one embodiment of the present invention, the establishment of the eye distance line dataset can be achieved through the reference determination unit. Specifically, the reference determination unit includes: a dataset creation module for scanning the human head image in real time to obtain the eye distance line L of the human head i , establish the eye distance line data set [L1, L2, ..., L i ]; and a reference locking module for filtering out the eye spacing line dataset [L1, L2, ..., L i ] the maximum interocular distance line L max As the eye distance reference value, and based on the position of the electronic rearview mirror display area, determine the eye distance reference value L max The corresponding center point reference coordinates (x max ,y max , z max ).

[0024] In this embodiment, when the human head is in the process of adjusting the posture, the eye distance reference value can be determined by moving the head left and right, and up and down, that is, the level-of-sight state of the human eye when viewing the electronic rearview mirror display can be found. In other words, the data set creation module can scan the eye information in the human head image, and then obtain the eye distance line L of the human head. i . Among them, when obtaining the image of the human head, it is also necessary to continue with, for example, radar detection technology or infrared detection technology. For example, when obtaining the image of the human head, the distance between the radar probe or infrared detection probe and each point of the human head is obtained, and then based on the linear value from the probe to each point of the human head and the angle value between the probe and the electronic rearview mirror display screen, the distance between the radar probe or infrared probe and each point of the human head is further converted into the distance between the electronic rearview mirror display screen and each point of the human head, thereby obtaining the eye coordinates based on the coordinate points of the electronic rearview mirror display screen. Then, based on the eye coordinates of the left eye and the right eye, the eye distance line L can be further obtained. i The arrangement of the spatial position. The eye distance line L at multiple consecutive moments is obtained i After that, we build the eye distance line dataset [L1, L2, ..., L i ] for further analysis. The interocular distance line dataset [L1, L2, ..., L i] the maximum eye distance line L max Query and find the maximum eye spacing line L max Then, the eye distance reference value L is further determined based on the coordinates of the electronic rearview mirror display area, that is, the location of the electronic rearview mirror display screen. max Corresponding center point reference coordinates For example, when the left eye coordinate (x eLi ,y eLi , z eLi ) and right eye coordinates (x eRi ,y eRi , z eRi ), we can get

[0025] In one embodiment of the present invention, when establishing the interocular distance line dataset [L1, L2, ..., L i ], it is also necessary to further determine the distance value of the eye spacing line of the human head according to the position of the two eyes. Specifically, the dataset creation module includes: an eye determination module for determining the human head image P i The left eye coordinate (x eLi ,y eLi , z eLi ) and right eye coordinates (x eRi ,y eRi , z eRi ); and an eye distance calculation module for calculating the distance between the left eye and the right eye according to the left eye coordinate (x eLi ,y eLi , z eLi ) and right eye coordinates (x eRi ,y eRi , z eRi ), calculate the eye spacing line of the human head Among them, L max ≥L i .

[0026] In this embodiment, the eye determination module is used to determine the human head image P i Then, according to the distance from the radar probe or infrared probe to the left eye and the right eye, the distance from the electronic rearview mirror to the left eye and the right eye is further determined to obtain the left eye coordinate (x eLi ,y eLi , z eLi ) and right eye coordinates (x eRi ,y eRi , z eRi ). Through the eye distance calculation module, we can calculate the left eye coordinate (x eLi ,y eLi , z eLi ) and right eye coordinates (xeRi ,y eRi , z eRi ), further determine the left eye coordinate (x eLi ,y eLi , z eLi ) and right eye coordinates (x eRi ,y eRi , z eRi ) is the eye spacing line of the human head. In the interocular distance line dataset [L1, L2, ..., L i ], there exists a relationship [L1, L2, ..., L i ]≥L max , that is, L max The interocular distance line L i Maximum value case.

[0027] Specifically, the interocular distance reference value L max Corresponding left eye coordinates and right eye coordinates The interocular distance linearity between the two sides is parallel to the plane where the electronic rearview mirror display area is located. In this embodiment, when the interocular distance linearity between the two sides is parallel to the plane where the electronic rearview mirror display area is located, it corresponds to the state where the human head maintains the best sitting posture to view the electronic rearview mirror.

[0028] In one embodiment of the present invention, after obtaining the interocular distance reference value L max and its corresponding center point reference coordinates (x max ,y max , z max ) After that, and during normal driving, it is also necessary to perform scene analysis and judgment on whether the human head image moves to check the electronic rearview mirror. Specifically, the state monitoring unit includes: a distance calculation module for performing eye distance line L when the human head moves j The center point coordinates (x j ,y j , z j ) and the center point reference coordinates (x max ,y max , z max ) to get the moving distance between the two And the state judgment module is used to judge the moving distance △X jmax Whether it exceeds the set distance value X0, if △X≥X0, it is determined that the movement state of the eye distance line is the state of checking the electronic rearview mirror.

[0029] In this embodiment, the state monitoring unit can realize the movement of the eye distance line L after the movement of the human head. j The center point coordinates (xj ,y j , z j ) is determined in advance, and its relationship with the center point reference coordinate (x max ,y max , z max ), that is, the distance between the human head and the center point reference coordinate (x max ,y max , z max )'s moving distance The state judgment module can further determine the moving distance △X jmax , determine the moving distance △X jmax The relationship between the eye distance line movement state and the set distance value X0. When △X ≥ X0, it is determined that the eye distance line movement state is the state of viewing the electronic rearview mirror, and the field of view area switching adjustment of the electronic rearview mirror display screen is directly activated. If △X < X0, on the contrary, it can be determined that the eye distance line movement state, that is, the state of the head is a small range of shaking or movement, and there is no need to activate the field of view area switching adjustment of the electronic rearview mirror display screen.

[0030] In one embodiment of the present invention, after obtaining the interocular distance reference value L max The eye distance line L when the moving state is to check the state of the electronic rearview mirror j After that, it is necessary to construct linear models respectively to more intuitively determine the head movement. Specifically, the modeling unit includes: a reference modeling module for determining the eye distance reference value L according to the eye distance reference value L. max The corresponding left eye coordinates (x eLmax ,y eLmax , z eLmax )、right eye coordinates (x eRmax ,y eRmax , z eRmax ) and the center point reference coordinates (x max ,y max , z max ), establish an eye spacing reference linear model; and a dynamic modeling module for viewing the eye spacing line L when the electronic rearview mirror moves according to the eye spacing line state. j The left eye coordinate (x eLj ,y eLj , z eLj )、right eye coordinates (x eRj ,y eRj , z eRj ) and the center point coordinates (x j ,y j , z j ), based on the eye spacing baseline linear model, establish the eye spacing line L j Real-time dynamic model.

[0031] In this embodiment, the eye distance reference value L can be used by the reference modeling module max The left eye coordinate (x eLmax ,y eLmax , z eLmax )、right eye coordinates (x eRmax ,y eRmax , z eRmax ) and the center point reference coordinates (x max ,y max , z max ), create the eye distance reference value L max The corresponding eye distance baseline linear model can be realized through the dynamic modeling module according to the eye distance line L j The left eye coordinate (x eLj ,y eLj , z eLj )、right eye coordinates (x eRj ,y eRj , z eRj ) and the center point coordinates (x j ,y j , z j ), establish the interocular distance line L j If the eye-distance baseline linear model and the real-time dynamic model are displayed on the vehicle's large screen, the eye-distance baseline linear model can be a model with a blurred display effect, while the real-time dynamic model can be a physical display model that can be adjusted according to the real-time state.

[0032] In one embodiment of the present invention, the field of view adjustment unit includes: a first state confirmation module for monitoring the movement direction of the human head along the x-axis when viewing the electronic rearview mirror, and obtaining the x-direction adjustment parameter x of the electronic rearview mirror display screen. T The second state confirmation module is used to monitor the movement direction of the human head along the y-axis when viewing the electronic rearview mirror, and obtain the z-direction adjustment parameter z of the electronic rearview mirror display screen T The third state confirmation module is used to monitor the movement direction of the human head along the z axis when viewing the electronic rearview mirror, and obtain the zoom adjustment parameter y of the electronic rearview mirror display screen T ; Adjustment control module, used to adjust the obtained x-axis parameter x T , z-axis adjustment parameter z T and scaling adjustment parameter y T Adjust the electronic rearview mirror display screen respectively to obtain the field of view area to be viewed.

[0033] In this embodiment, after determining that the eye distance line movement state is the electronic rearview mirror viewing state, the corresponding processing parameters of the electronic rearview mirror display screen can be adjusted by the first state determination module, the second state determination module, and the third state determination module, and the electronic rearview mirror display screen is switched using the adjusted processing parameters. Specifically, the first state confirmation module monitors the movement in the positive or negative direction of the x-axis, and after determining that it is a positive or negative movement, obtains the x-direction adjustment parameter x for the electronic rearview mirror display screen in the direction opposite to the human head. T , and adjust the parameter x according to the x direction by adjusting the control module T Adjust the electronic rearview mirror display. The second state confirmation module monitors the movement along the positive or reverse direction of the z-axis. After determining that it is moving in the positive or reverse direction, the z-axis adjustment parameter z of the electronic rearview mirror display in the opposite direction of the human head is obtained. T , and adjust the parameter z according to the z direction by adjusting the control module T Adjust the electronic rearview mirror display. The third state confirmation module monitors the movement along the y-axis in the positive or reverse direction. After determining that it is moving in the positive or reverse direction, the zoom adjustment parameter y for enlarging or reducing the electronic rearview mirror display is obtained. T And adjust the control module according to the scaling parameter y T The electronic rearview mirror display screen is scaled and adjusted, thereby ensuring that the electronic rearview mirror display screen is adaptable to the movement of the human head during adjustment.

[0034] In one embodiment of the present invention, the first status confirmation module includes: max -x j When >0, it is determined that the human head is moving in the positive direction of the x-axis, and the x-direction adjustment parameter x is obtained to adjust the electronic rearview mirror display screen to the reverse direction of the x-axis. T ; Reverse control module, used when x max -x j <0, it is determined that the human head is moving in the reverse direction of the x-axis, and the x-direction adjustment parameter x is obtained to adjust the electronic rearview mirror display screen to the positive direction of the x-axis. T The second state confirmation module includes: when z max -z j When >0, it is determined that the human head is moving in the positive direction of the z-axis, and the z-direction adjustment parameter z for moving the electronic rearview mirror display screen in the reverse direction of the z-axis is obtained. T ; When z max -z j <0, it is determined that the human head is moving in the reverse direction of the z-axis, and the z-direction adjustment parameter z is obtained to move the electronic rearview mirror display screen in the positive direction of the z-axis. T ; The third state confirmation module includes: when ymax -y j When y is greater than 0, it is determined that the human head is moving in the positive direction of the y-axis, and the zoom adjustment parameter y for magnifying the electronic rearview mirror display is obtained. T When y max -y j <0, it is determined that the human head is moving in the opposite direction of the y-axis, and the zoom adjustment parameter y is obtained to reduce the display screen of the electronic rearview mirror. T .

[0035] In this embodiment, the first state confirmation module can be used to realize max -x j When >0, it indicates that the human head is moving in the positive direction of the x-axis, for example, the head moves to the right side of the human body, thereby adjusting the electronic rearview mirror display screen to the left according to the x-axis adjustment parameter x T Make adjustments. When x max -x j <0, the electronic rearview mirror display screen will be adjusted to the right according to the parameter x on the electronic rearview mirror display screen T Adjustment can be made through the second state confirmation module. max -z j When >0, it indicates that the human head is moving in the positive direction of the z-axis, for example, the head moves upward, so that the electronic rearview mirror display screen is adjusted downward according to the z-axis parameter z T Make adjustments when z max -z j <0, the electronic rearview mirror display screen will be adjusted upwards according to the z direction parameter z on the electronic rearview mirror display screen T Further, the third state confirmation module can be used to realize max -y j When it is >0, it means that the human head is far away from the electronic rearview mirror display screen. At this time, the electronic rearview mirror display screen can be adjusted according to the zoom parameter y T On the contrary, y max -y j When <0, the electronic rearview mirror display can be adjusted according to the zoom parameter y T Make magnification adjustments.

[0036] In one embodiment of the present invention, the first state confirmation module includes: according to the maximum adjustment amount x along the x-axis from the center of the electronic rearview mirror display screen, Tmax and the maximum movement of the human head along the x-axis x Cmax , determine the x-axis adjustment parameter The second state confirmation module includes: Tmax and the maximum movement of the human head along the z axis z Cmax , determine the z-axis adjustment parameters The third state confirmation module includes: Tmax and the maximum movement of the human head along the y-axis y Cmax , determine the scaling adjustment parameters

[0037] In this embodiment, when the electronic rearview mirror display is in the center state (initial state), the maximum adjustment amount along the x-axis is x Tmax , the maximum adjustment along the z axis is z Tmax , and the maximum adjustment amount for zooming the display is y Tmax The first state confirmation module can realize the maximum movement of the human head along the x-axis x Cmax and the center point coordinates (x j ,y j , z j ) in the x-axis coordinate point x j , determine the x-axis adjustment parameter The second state confirmation module can realize the maximum movement z of the human head along the z axis. Cmax and the center point coordinates (x j ,y j , z j ) in the z-axis coordinate point z j , determine the z-axis adjustment parameters The third state confirmation module can realize the maximum movement amount y of the human head along the y axis. Cmax and the center point coordinates (x j ,y j , z j ) in the y-axis coordinate point y j , determine the scaling adjustment parameters This can be achieved according to as well as The electronic rearview mirror display screen is adjusted by adjusting the control module to obtain the desired field of view area.

[0038] See also Figure 2In a preferred embodiment, the red area may be the display screen of the electronic rearview mirror in wide-angle mode, which may include four areas: A, B, C, and D. The display screen in wide-angle mode is located in the center of the electronic rearview mirror display screen, and the display screen size in wide-angle mode is larger than the displayable size of the electronic rearview mirror display screen.

[0039] See also Figure 3 In a preferred embodiment, the red area can be the display screen of the electronic rearview mirror in wide-angle mode, which can include four areas: A, B, C, and D. The display screen in wide-angle mode moves to the upper left relative to the electronic rearview mirror display screen, corresponding to the human head moving in the negative direction of the x-axis, the positive direction of the z-axis, and the positive direction of the y-axis (towards the electronic rearview mirror display screen). The electronic rearview mirror display screen displays the enlarged field of view of the lower right corner of the display screen in wide-angle mode.

[0040] like Figure 4 As shown, the present invention also provides an analysis and control method for an electronic rearview mirror, comprising the following steps:

[0041] Step S10: obtaining an eye distance line data set during the posture calibration process, determining an eye distance line reference value based on the eye distance line data set, and obtaining initial adjustment data for the electronic rearview mirror display based on the eye distance line reference value;

[0042] Step S20: monitoring the movement state of the interocular distance line;

[0043] Step S30: when the moving state of the eye distance line is the state of checking the electronic rearview mirror, a real-time dynamic linear model of the eye distance line is established according to the eye distance line reference value;

[0044] Step S40: switching the electronic rearview mirror display screen based on the initial adjustment data to the viewing field area according to the viewing state of the electronic rearview mirror display screen corresponding to the eye distance line in the real-time dynamic model.

[0045] In summary, the present invention discloses an analysis and control system and method for an electronic rearview mirror. This system establishes an interocular distance line dataset based on interocular distance line data collected during the posture adjustment process when viewing the electronic rearview mirror, and determines the interocular distance line value with the largest value in the interocular distance line dataset as a reference interocular distance line value. This reference interocular distance line value is then used as the optimal viewing angle for viewing the electronic rearview mirror, and the electronic rearview mirror display is adjusted based on this reference interocular distance line value, so that the electronic rearview mirror display shows the optimal viewing area that conforms to driving habits. When viewing the electronic rearview mirror based on the calibrated interocular distance line reference value, the movement state of the interocular distance line, i.e., the movement state of the human head, is also detected. When the movement state of the interocular distance line is found to be in the state of viewing the electronic rearview mirror, a real-time dynamic linear model of the interocular distance line is established. This real-time dynamic linear model facilitates rapid and accurate determination of the interocular distance line movement viewing state based on the real-time dynamic linear model, thereby adjusting the electronic rearview mirror's adaptive viewing area based on the corresponding viewing state to meet personalized viewing requirements for different viewing areas on the electronic rearview mirror display. The above-described analysis and control method facilitates the implementation of simulated analysis and display of the electronic rearview mirror based on a physical rearview mirror. Specifically, the display image is adjusted in real time when the human head moves left and right, up and down, or when viewing the rearview mirror from close proximity. This improves the switchability of the display image when viewing the electronic rearview mirror, providing drivers with convenient switching of the rearview mirror display image based on their habit of viewing a physical rearview mirror. This improves the rearview mirror viewing experience while reducing blind spots. Therefore, the present invention effectively overcomes various shortcomings of the prior art and has high industrial application value.

[0046] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. An analysis and control system for an electronic rearview mirror, characterized in that: include: A reference determination unit, used for acquiring an eye spacing line data set in the process of calibrating the posture, determining an eye spacing line reference value according to the eye spacing line data set, and obtaining initial adjustment data of the electronic rearview mirror display screen based on the eye spacing line reference value; A state monitoring unit, used to monitor the movement state of the interocular distance line; A modeling unit, used for establishing a real-time dynamic linear model of the eye spacing line according to the eye spacing line reference value when the moving state of the eye spacing line is a state of checking the electronic rearview mirror; and The field of view adjustment unit is used to switch the electronic rearview mirror display screen based on the initial adjustment data to the field of view area to be viewed according to the viewing state of the electronic rearview mirror display screen corresponding to the eye distance line in the real-time dynamic model.

2. The analysis and control system of the electronic rearview mirror according to claim 1, characterized in that: The benchmark determination unit comprises: The dataset creation module is used to scan the human head image in real time and obtain the eye spacing line L of the human head. i , establish the interocular distance line data set [L1, L2, ..., L i ];as well as The reference locking module is used to filter out the interocular distance line data set [L1, L2, ..., L i ] the maximum interocular distance line L max As the interocular distance reference value, and based on the location of the electronic rearview mirror display area, the interocular distance reference value L is determined max The corresponding center point reference coordinates (x max ,y max , z max ).

3. The analysis and control system of the electronic rearview mirror according to claim 2, characterized in that: The data set creation module includes: Eye determination module, used to determine the human head image P i The left eye coordinates (x eLi ,y eLi , z eLi ) and right eye coordinates (x eRi ,y eRi , z eRi );as well as The eye distance calculation module is used to calculate the left eye coordinate (x eLi ,y eLi , z eLi ) and right eye coordinates (x eRi ,y eRi , z eRi ), calculate the eye spacing line of the human head Among them, L max ≥L i .

4. The analysis and control system of the electronic rearview mirror according to claim 3, characterized in that: The interocular distance reference value L max The corresponding left eye coordinates (x eLmax ,y eLmax , z eLmax ) and right eye coordinates (x eRmax ,y eRmax , z eRmax ) is linearly parallel to the plane where the electronic rearview mirror display area is located.

5. The analysis and control system of the electronic rearview mirror according to claim 2, characterized in that: The state monitoring unit comprises: Distance calculation module, used to calculate the eye distance line L when the human head moves j The center point coordinates (x j ,y j , z j ) and the center point reference coordinates (x max ,y max , z max ) to obtain the moving distance between the two as well as State judgment module, used to judge the moving distance △X jmax Whether it exceeds the set distance value X0, if △X≥X0, it is determined that the movement state of the eye distance line is the state of checking the electronic rearview mirror.

6. The analysis and control system of the electronic rearview mirror according to claim 3, characterized in that: The modeling unit comprises: The benchmark modeling module is used to calculate the eye spacing based on the eye spacing benchmark value L. max The corresponding left eye coordinates (x eLmax ,y eLmax , z eLmax )、right eye coordinates (x eRmax ,y eRmax , z eRmax ) and the center point reference coordinates (x max ,y max , z max ), establish a baseline linear model of interocular distance; and A dynamic modeling module is used to determine the eye distance line L when the eye distance line moves to the state of viewing the electronic rearview mirror. j The left eye coordinate (x eLj ,y eLj , z eLj )、right eye coordinates (x eRj ,y eRj , z eRj ) and the center point coordinates (x j ,y j , z j ), based on the eye spacing reference linear model, establish the eye spacing line L j Real-time dynamic model.

7. The analysis and control system of the electronic rearview mirror according to claim 6, characterized in that: The field of view adjustment unit comprises: The first state confirmation module is used to monitor the movement direction of the human head along the x-axis when viewing the electronic rearview mirror, and obtain the x-direction adjustment parameter x of the electronic rearview mirror display screen. T ; The second state confirmation module is used to monitor the movement direction of the human head along the y-axis when viewing the electronic rearview mirror, and obtain the z-direction adjustment parameter z of the electronic rearview mirror display screen. T ; The third state confirmation module is used to monitor the movement direction of the human head along the z-axis when viewing the electronic rearview mirror, and obtain the scaling adjustment parameter y of the electronic rearview mirror display screen. T ; The adjustment control module is used to adjust the obtained x-axis parameter x T 、Z-axis adjustment parameter z T and scaling adjustment parameter y T The electronic rearview mirror display screen is adjusted respectively to obtain the desired field of view area.

8. The analysis and control system of the electronic rearview mirror according to claim 7, characterized in that: The first state confirmation module includes: when x max -x j When >0, it is determined that the human head is moving in the positive direction of the x-axis, and the x-direction adjustment parameter x for moving the electronic rearview mirror display screen in the reverse direction of the x-axis is obtained. T ; Reverse control module, used when x max -x j <0, it is determined that the human head is moving in the reverse direction of the x-axis, and the x-direction adjustment parameter x is obtained to adjust the electronic rearview mirror display screen to the positive direction of the x-axis. T ; The second state confirmation module includes: max -z j When >0, it is determined that the human head is moving in the positive direction of the z-axis, and the z-adjustment parameter z for moving the electronic rearview mirror display screen in the reverse direction of the z-axis is obtained. T ; When z max -z j <0, it is determined that the human head is moving in the reverse direction of the z-axis, and the z-adjustment parameter z is obtained to adjust the electronic rearview mirror display screen to the positive direction of the z-axis. T ; The third state confirmation module includes: max -y j >0, it is determined that the human head is moving in the positive direction of the y-axis, and the scaling adjustment parameter y for magnifying the electronic rearview mirror display is obtained. T When y max -y j <0, it is determined that the human head is moving in the opposite direction of the y-axis, and the scaling adjustment parameter y for reducing the display screen of the electronic rearview mirror is obtained. T .

9. The analysis and control system of the electronic rearview mirror according to claim 7, characterized in that: The first state confirmation module includes: according to the maximum adjustment amount x along the x-axis from the center of the electronic rearview mirror display screen Tmax and the maximum movement of the human head along the x-axis x Cmax , determine the x-axis adjustment parameter The second state confirmation module includes: according to the maximum adjustment amount z along the z-axis from the center of the electronic rearview mirror display screen Tmax and the maximum movement of the human head along the z axis z Cmax , determine the z-axis adjustment parameters The third state confirmation module includes: according to the maximum adjustment amount y of the scaling adjustment from the center of the standard display screen of the electronic rearview mirror Tmax and the maximum movement of the human head along the y-axis y Cmax , determine the scaling adjustment parameters 10. An analysis and control method for an electronic rearview mirror, characterized in that: The steps include: Acquire an eye spacing line data set in the posture calibration process, determine an eye spacing line reference value according to the eye spacing line data set, and obtain initial adjustment data of the electronic rearview mirror display screen based on the eye spacing line reference value; Monitor the movement status of the interocular distance line; When the moving state of the eye distance line is a state of checking the electronic rearview mirror, a real-time dynamic linear model of the eye distance line is established according to the eye distance line reference value; According to the viewing state of the electronic rearview mirror display screen corresponding to the eye distance line in the real-time dynamic model, the electronic rearview mirror display screen based on the initial adjustment data is switched to the field of view area to be viewed.

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