CN219980900U - Camera field angle testing device - Google Patents

Abstract

The utility model relates to a camera view angle testing device which comprises a bracket, a ranging component and a target; the camera to be tested is movably arranged on the bracket; the target is arranged in the visual field range of the camera to be detected, and is in a grid pattern; the distance measuring assembly is arranged on the support and opposite to the target in position and used for measuring the horizontal distance between the camera to be measured and the target. The camera view angle testing device can meet the testing requirements of the camera view angles at different positions, and the accuracy of camera view angle measurement is effectively improved.

Description

Camera field angle testing device

Technical Field

The utility model relates to the technical field of cameras, in particular to a camera field angle testing device.

Background

The camera is used as a sensor for acquiring image information and is widely applied to the fields of intelligent driving, security monitoring, industrial engineering, 3D imaging and the like, wherein the field angle is one of the most important parameters of the camera, and the field angle is related to the position and the range of a scene which can be captured by the camera, so that the field angle parameter of the camera is accurately tested to evaluate an important performance index of the camera.

However, in the testing method for the angle of view of the camera in the prior art, the optical center of the default lens is often located at the center of the picture so as to perform the angle of view test, but when the camera is actually installed, the lens and the camera generate certain offset, so that the optical center is not located at the center of the picture, and the accuracy of the angle of view test result is low and the error is larger when the test is performed according to the current testing method.

Disclosure of Invention

In this embodiment, a camera view angle testing device is provided to meet the requirement of accurate view angle testing of a camera.

In a first aspect, in this embodiment, there is provided a camera view angle testing apparatus, including: a support, a ranging assembly, and a target;

the camera to be tested is movably arranged on the bracket;

the target is arranged in the visual field range of the camera to be detected, and is in a grid pattern;

the distance measuring assembly is arranged on the support and opposite to the target in position and used for measuring the horizontal distance between the camera to be measured and the target.

In one embodiment, the bracket comprises a vertical guide rail, a camera fixture and a camera slider;

the vertical guide rail is movably connected with the camera slider;

the camera clamp is fixedly connected with the camera sliding block;

the camera clamp is used for fixing the camera to be tested.

In one embodiment, the target comprises a target shaft and a target disk;

the setting direction of the target rod corresponds to the setting direction of the bracket;

the target disc is fixedly arranged on the target rod, and the target disc is in a lattice pattern.

In one embodiment, the camera view angle testing device further comprises a target sliding rail and a target sliding block;

one end of the target sliding rail is close to the bracket and extends along the direction away from the bracket;

the target sliding block is movably arranged on the target sliding rail;

the target rod is fixedly connected with the target sliding block, so that the target sliding block drives the target disc to move in a direction close to the camera to be detected or in a direction far away from the camera to be detected.

In one embodiment, the target slide rail is provided with a plurality of positioning holes, and the positioning holes are arranged at intervals along the extending direction of the target slide rail;

the target slide block is provided with an adjusting hole;

the camera view angle testing device further comprises a locating pin; the positioning pin is matched with any one of the positioning holes and the adjusting hole.

In one embodiment, the camera view angle testing device further comprises a driving component;

the driving assembly is in driving connection with the target slide block; and the target slide block is used for driving the target slide block to move along the target guide rail.

In one embodiment, the drive assembly includes a lead screw and a linear drive;

the screw rod penetrates through the target sliding block;

the straight driving device is connected with the screw rod in a driving way and is used for driving the screw rod to rotate so as to drive the target disc to move in a direction close to the camera to be detected or in a direction far away from the camera to be detected.

In one embodiment, the camera angle of view testing device further comprises a conveyor belt assembly;

the target is arranged on the conveyor belt assembly, and the conveyor belt device is used for driving the target to move towards the direction close to the camera to be detected or move towards the direction far away from the camera to be detected.

In one embodiment, the camera view angle testing device further comprises a processor;

the processor is electrically connected with the camera to be detected and the ranging component respectively;

the processor is used for acquiring the image acquired by the camera to be detected and the distance acquired by the distance measuring component and calculating the angle of view of the camera to be detected.

In one embodiment, the ranging assembly comprises a laser rangefinder.

Compared with the related art, the camera view angle testing device provided in the embodiment comprises a bracket, a ranging component and a target; the camera to be tested is movably arranged on the bracket; the target is arranged in the visual field range of the camera to be detected, and is in a grid pattern; the distance measuring assembly is arranged on the support and opposite to the target in position and used for measuring the horizontal distance between the camera to be measured and the target. The camera angle of view testing device can meet the testing requirements of camera angles of view under different positions, can overcome the problems that when a camera is actually installed, the optical center is not at the center of a picture due to the offset difference of a lens and the camera, and the accuracy of the angle of view testing result is low and the error is large.

The details of one or more embodiments of the utility model are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the other features, objects, and advantages of the utility model.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic view of a camera lens with an optical center at a field angle of view in the center of a frame;

FIG. 2 is a schematic diagram of a camera view angle testing apparatus according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a stent according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a target according to an embodiment of the utility model;

FIG. 5 is a schematic view of a target slide and a target slider according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a pilot hole and an adjustment hole of an embodiment of the present utility model;

FIG. 7 is a schematic diagram of a drive assembly according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a conveyor belt assembly according to an embodiment of the utility model;

FIG. 9 is a schematic diagram of a camera view angle testing apparatus including a processor in an embodiment of the utility model;

FIG. 10 is a diagram showing the difference between the field angle test and the actual effect at the center of the frame according to the embodiment of the present utility model;

fig. 11 is a schematic view of a view angle calculation principle of a camera to be tested according to an embodiment of the present utility model.

Reference numerals illustrate: 10. a bracket; 101. a vertical guide rail; 102. a camera fixture; 103. a camera slider; 20. a ranging assembly; 30. a target; 301. a target rod; 302. a target plate; 40. a camera to be tested; 50. a target slide rail; 501. positioning holes; 60. a target slider; 601. an adjustment aperture; 70. a positioning pin; 80. a drive assembly; 801. a screw rod; 802. driving in a straight line; 90. a conveyor belt assembly; 110. a processor.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments should be understood as "electrical connection", "communication connection", and the like if there is transmission of electrical signals or data between objects to be connected.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, the term "and/or" as used in this specification includes any and all combinations of the associated listed items.

With the continuous improvement of user intelligent experience demands, the continuous promotion of policies and high importance of industries, the automobile intelligent process is continuously accelerated. As one of the intelligent driving sensors, the vehicle-mounted camera has low cost and relatively mature hardware technology compared with millimeter wave radar, laser radar and the like, and is a core sensor for intelligent application of automobiles.

The camera as a sensor for acquiring image information has important functional application in intelligent driving, security monitoring, industrial engineering, 3D imaging and other watercourses, and has wide application in various scenes. The angle of view is one of the most important parameters of the camera, and the size of the angle of view is related to the position and the range of a scene which can be captured by the camera, so that the accurate test of the angle of view parameter of the camera is an important performance index evaluation of the camera.

The imaging principle of the camera is that a sensor (image sensor) converts an optical signal collected through a lens of the camera into an electrical signal, then converts the electrical signal into a digital image signal through signal processing, and processes the signal into an image of a specific format for display. The lens center of the conventional camera is aligned with the sensor center during assembly, and the camera is symmetrical about the optical axis as a central field angle, so that the default picture center is the optical axis center and the optical axis is the center during the field angle test of the camera.

Referring to fig. 1, fig. 1 is a schematic view of a field angle with a lens optical center of a camera at a picture center, wherein the field angles are identical in size (i.e. HFOV is equal to HFOV on the left) from top to bottom, so that the overall picture size and the picture distance photographed by the camera on the basis of the above are calculated by a trigonometric function. Illustratively, since HFOV left=hfov right, the calculation of the field angle is as shown in equation (1):

hfov=2 x arctan (0.5L/WD) equation (1)

Where HFOV is the camera field angle in the horizontal direction, WD is the vertical distance between the camera and the captured image, and L is the length of the horizontal dimension in the overall image captured by the camera.

The above-mentioned test method is based on the default lens optical center being located at the center of the picture, but when the camera is actually installed, the lens and the camera will generate a certain offset, resulting in the optical center not being located at the center of the picture. Therefore, the accuracy of the test result of the angle of view is low and the error is large when the test is performed according to the current test method.

In order to solve the above-mentioned problems, in the present embodiment, a camera view angle testing device is provided, fig. 2 is a schematic diagram of the camera view angle testing device according to the embodiment of the present utility model, and as shown in fig. 2, the camera view angle testing device includes a bracket 10, a ranging component 20, and a target 30;

the camera 40 to be tested is movably arranged on the bracket 10;

the target 30 is disposed in the field of view of the camera 40 to be tested, and the target 30 is a grid pattern;

the distance measuring assembly 20 is disposed on the support 10 and is opposite to the target 30, and is used for measuring a horizontal distance between the camera 40 to be measured and the target 30.

Specifically, the camera 40 to be tested is movably disposed on the bracket 10, that is, the camera 40 to be tested can move up and down along the direction of the bracket 10;

specifically, when the angle of view test is performed on the camera 40 to be tested, the pattern on the target 30 should be collected by the field of view of the camera 40 to be tested, so the target 30 is disposed in the field of view of the camera 40 to be tested.

Specifically, the target 30 is a grid pattern, the side length of each grid inside the grid pattern is preset and fixed, and the size of the vertical direction and the horizontal direction of the picture shot by the camera is calculated according to the number of grids in the image of the target shot by the camera and the actual grid size.

Specifically, the ranging component 20 is configured to accurately measure the horizontal distance between the camera 40 to be measured and the target 30, and the measuring direction of the ranging component 20 is opposite to the direction of the target surface, that is, the measuring direction is ensured to be perpendicular to the target surface.

In the above embodiment, the camera angle of view testing device formed by the bracket 10, the ranging component 20 and the target 30 can meet the testing requirements of the camera angle of view in different positions, and effectively improves the accuracy of the camera angle of view measurement.

In one embodiment, referring to fig. 3, fig. 3 is a schematic view of a bracket 10 according to an embodiment of the present utility model, where the bracket 10 includes a vertical rail 101, a camera fixture 102, and a camera slider 103;

the vertical guide rail 101 is movably connected with the camera slider 103;

the camera clamp 102 is fixedly connected with the camera slider 103;

the camera fixture 102 is used for fixing the camera 40 to be tested.

Specifically, in this embodiment, the movable connection between the vertical guide rail 101 and the camera slider 103 is that the guide rail groove is movably connected with the camera slider 103, that is, the camera slider 103 can move in the groove of the vertical guide rail 101, so as to drive the camera fixture 102 to move, and since the camera fixture 102 is fixedly connected with the camera slider 103 and the camera 40 to be tested respectively, the camera 40 to be tested can also be driven to move.

Specifically, the camera fixture 102 may be a fixed fixture, on which the camera 40 to be tested may be fixed, and in other embodiments, the camera fixture 102 may be selected according to actual situations, which is not described herein.

In the above embodiment, the bracket 10 is designed to be a structural device including the vertical guide rail 101, the camera fixture 102 and the camera slider 103, so that the up-and-down movement of the camera 40 to be tested can be realized, and the requirements of different testing positions can be met.

In one embodiment, referring to fig. 4, fig. 4 is a schematic view of a target 30 according to an embodiment of the present utility model, the target 30 including a target shaft 301 and a target disk 302;

the setting direction of the target 301 corresponds to the setting direction of the support 10;

the target plate 302 is fixedly arranged on the target rod 301, and the target plate 302 is in a lattice pattern.

Specifically, in the present embodiment, the arrangement direction of the target 301 corresponding to the arrangement direction of the holder 10 means that the holder 10 direction and the target 301 direction are perpendicular to the ground (horizontal plane), and the holder 10 and the target 301 are parallel.

Specifically, the target plate 302 is fixedly disposed on the target rod 301, the grid patterns disposed on the target plate 302 are of preset sizes, and the target plate 302 should be set to a reasonable size, and should not be too large or too small, so as to ensure that the camera 40 to be tested can collect the grid patterns on the target plate 302. When the camera 40 to be tested collects the pictures of the grid patterns, the horizontal or vertical view angle size of the camera 40 to be tested can be determined based on the number and layout of the grid patterns collected in the pictures, and in other embodiments, the size of the target disc 302 and the size of the grid patterns in the target disc 302 can be determined according to the actual situation, which is not described in detail herein.

The pattern in the target disc 302 may be a black-and-white grid, and the size of the black-and-white grid may be used to calculate the size of the camera in the field of view, and the black-and-white grid may be arranged in a different number of squares, such as 10×10 or 12×12, and the arrangement is black-and-white alternation.

Specifically, after the camera collects the black-white grid pictures, the field size calculation program can be utilized to capture the black block closest to the center according to the black-white grid pictures, calculate the number of pixel points occupied by the black block and the pixel size of the sensor, calculate the total black-white grid number n in the vertical direction, and then calculate the actual black-white grid size l ₍₁₎ Calculating the view field size L=l of the camera shooting in the vertical direction ₍₁₎ *n；

In the above embodiment, the target 30 is set to include the target rod 301 and the target disc 302, and the grid pattern is set in the target disc 302, and after the camera 40 to be measured collects the image of the target disc 302, the view angle size of the camera 40 to be measured can be accurately obtained and determined based on the obtained image of the target disc 302.

In one embodiment, referring to fig. 5, fig. 5 is a schematic diagram of a target slide rail 50 and a target slide block 60 according to an embodiment of the present utility model, and the camera view angle testing device further includes the target slide rail 50 and the target slide block 60;

one end of the target sliding rail 50 is close to the bracket 10 and extends along a direction away from the bracket 10;

the target slide block 60 is movably arranged on the target slide rail 50;

the target 301 is fixedly connected to the target slider 60, so that the target slider 60 drives the target disc 302 to move in a direction close to the camera 40 to be detected or in a direction far away from the camera 40 to be detected.

Specifically, in this embodiment, the movable arrangement of the target slide 60 on the target slide 50 indicates that the groove of the target slide 50 is movably connected with the target slide 60, that is, the target slide 60 can move in the groove of the target slide 50, so as to drive the target 301 to move, and because the target 301 is fixedly connected with the target slide 60 and the target disk 302 respectively, the target disk 302 can also be driven to move; in other embodiments, a drive may be added to the target slide 60 to effect automated movement of the target 30.

Specifically, one end of the target sliding rail 50 is close to the support 10, and extends along a direction away from the support 10, which means that the target sliding rail 50 is disposed on a horizontal plane, perpendicular to the support 10, and the placement direction of the target sliding rail 50 extends along a direction away from the support 10, so as to ensure that the target travels along a preset route.

It can be appreciated that the target slide rail 50 may be a linear slide rail or a curved slide rail, and the slide rail type may be selected according to actual situations, which is not described herein.

In the above embodiment, the target can travel according to the preset route through the target slide rail 50 and the target slide block 60, so that the controllability and accuracy of the testing process are improved.

In one embodiment, referring to fig. 6, fig. 6 is a schematic diagram of a positioning hole 501 and an adjusting hole 601 in the embodiment of the present utility model, a plurality of positioning holes 501 are formed on the target sliding rail 50, and the plurality of positioning holes 501 are spaced along the extending direction of the target sliding rail 50;

the target slide block 60 is provided with an adjusting hole 601;

the camera angle of view testing device also includes a locating pin 70; the positioning pin 70 is engaged with any one of the positioning holes 501 and the adjusting hole 601.

Specifically, when the angle of view is tested, there is a case where there is a small vibration or external resistance and thrust in the environment during the test, which may cause a small variation in the target position during the test, thereby resulting in inaccurate results and large errors. Based on the above, the setting position of the positioning hole 501 is determined based on the preset test requirement, and when the positioning hole 501 is aligned with the adjusting hole 601 up and down, the positioning pin 70 is inserted into the aligned holes, so as to fix the position of the target 30.

In the above embodiment, by virtue of the cooperation between the positioning pin 70, the positioning hole 501 and the adjustment hole 601, accurate position fixing of the target 30 can be achieved.

In one embodiment, the camera view angle testing device further comprises a driving assembly 80;

the driving assembly 80 is in driving connection with the target slide 60; for driving the target slide 60 to move along the target slide rail 50.

Specifically, the driving component 80 may be a motor driving or a mechanical driving, and the driving component may be selected according to actual situations, which is not described herein in detail.

In the above embodiment, by adding the driving component 80, the automatic movement of the target slider 60 can be realized, and then the target 30 is driven to automatically move, so that the testing efficiency of the angle of view is improved.

In one embodiment, referring to fig. 7, fig. 7 is a schematic diagram of a driving assembly 80 according to an embodiment of the present utility model, the driving assembly 80 includes a screw 801 and a straight driving 802;

the screw rod 801 penetrates through the target slide block 60;

the straight driving device 802 is in driving connection with the screw rod 801, and is used for driving the screw rod 801 to rotate so as to drive the target disc 302 to move in a direction approaching to the camera 40 to be tested or move in a direction far away from the camera 40 to be tested.

Specifically, the lead screw 801 is arranged between the target slide rails 50, a straight driving 802 is arranged at the tail of the lead screw 801 and used for driving the lead screw 801 to rotate, then the lead screw 801 rotates to drive the middle target slide block 60 to move, and further the front and back movement of the target 30 is realized, and the balance of the target 30 is mainly maintained at two sides of the target slide rails 50. Chain wire boxes may also be provided on both sides of the target slide rail 50 for protecting the associated wire harness from interfering with the rotation of the lead screw 801 during movement.

It will be appreciated that the target slide 60 may also be manually slid by the user and not entirely by electrical power.

In the above embodiment, the driving assembly 80 is matched with the target slider 60 through the screw 801 with low cost and easy material drawing, so that the forward and backward movement of the target 30 is efficiently realized.

In one embodiment, referring to fig. 8, fig. 8 is a schematic view of a conveyor belt assembly 90 according to an embodiment of the present utility model, and the camera angle of view testing device further includes the conveyor belt assembly 90; the target 30 is disposed on the conveyor belt assembly 90, and the conveyor belt assembly 90 is configured to drive the target 30 to move in a direction approaching the camera 40 to be tested or in a direction away from the camera 40 to be tested.

Specifically, after the target 30 is placed on the conveyor belt assembly 90, the target is slid relative to the conveyor belt and accelerated by sliding friction force until the speed is increased to be the same as that of the conveyor belt, the target 30 is relatively stationary relative to the conveyor belt, and keeps moving at a uniform speed with the speed of the conveyor belt, and the conveyor belt is continuously operated by friction force between the conveyor belt and the driving roller under the driving of the motor, so that the target 30 is moved.

In the above embodiment, the driving assembly 80 cooperates with the target 30 through the conveyor belt assembly 90 with high automation and easy material drawing, and the forward and backward movement of the target 30 is efficiently realized.

In one embodiment, referring to fig. 9, fig. 9 is a schematic diagram of a camera view angle testing apparatus including a processor 110 according to an embodiment of the present utility model, where the camera view angle testing apparatus further includes the processor 110;

the processor 110 is electrically connected with the camera 40 to be measured and the ranging component 20 respectively;

the processor 110 is configured to obtain an image collected by the camera 40 to be measured and a distance collected by the ranging component 20, and calculate a field angle of the camera 40 to be measured.

Specifically, when the optical center of the default lens is located at the center of the picture, but the camera is actually installed, the lens and the camera generate certain offset, so that the optical center is not located at the center of the picture, that is, when the field angle is actually tested, the obtained result of the field angle is inaccurate, and certain error can be generated.

For example, referring to fig. 10, fig. 10 is a schematic diagram showing a difference between a field angle test performed at the center of a screen and an actual effect, that is, a difference between an actual β angle and a theoretical α angle value according to an embodiment of the present utility model. In addition, in other embodiments, due to the limitation of requirements of some special application scenes or structural design, the assembly design is performed by adopting a scheme of offsetting the optical center of the lens and the sensor in the scheme design, so as to generate the effect that the range of the view angle is increased or decreased in a specific direction, and the view angle is asymmetric with the lens center, that is, the optical center is offset from the actual picture center more greatly. If the traditional general field angle testing principle is adopted for calculation, the actual field angle value and shooting range of the camera cannot be accurately tested. In addition, the existing test method can only test the whole horizontal or vertical field angle, and cannot independently obtain the vertical field angle sizes (beta 1 and beta 2) of the asymmetric camera in two directions with the optical axis as the center, so that the change effect of the actual field range caused by the offset scheme cannot be tested.

Specifically, referring to fig. 11, fig. 11 is a schematic view of a calculation principle of a field angle of a camera 40 to be measured according to an embodiment of the present utility model, where the processor 110 is configured to obtain an image collected by the camera 40 to be measured and a distance collected by the ranging component 20, calculate the field angle of the camera 40 to be measured, and specifically calculate the following steps:

1. the processor 110 reads the camera characteristic related parameters stored in the flash by the camera 40 to be measured.

The camera characteristic related parameters include a camera focal length (horizontal focal length fx and vertical focal length fy), an image principal point position (horizontal position cx and vertical position cy), a lens distortion center and the like.

Illustratively, the lens distortion center represents the actual pixel position of the principal point of the image, i.e., the actual position of the lens center in the camera imaging frame; for example, the full pixel at the lens angle is 1280 x 800, the distortion center is (640,500), and the full pixel representing the lens center is shifted by 100 pixels from the lens angle (theoretical image center is (640,400)

2. The processor 110 reads the value of WD from the ranging assembly 20.

3. The processor 110 obtains an actual vertical viewing angle dimension L based on the image acquired by the camera 40 to be tested.

Wherein the actual vertical view angle size can be calculated based on the image because the number and position of the lattices can be seen from the acquired image and the actual lattice size is determined.

4. The obtained distortion center value and WD are introduced into the view angle calculation, and as shown in fig. 11, the ratio of the distortion center value and WD is calculated based on the vertical distortion position cy of the lens and the vertical integral pixel value of the sensor (full pixel of the lens angle), wherein l1=l-l×cy/P and l2=l×cy/P.

5. The processor 110 calculates the actual magnitudes of the vertical angles of view of the bias scheme camera in the upper and lower directions based on the L1, L2 and the inverse trigonometric function formula, and the specific calculation process is as follows:

β1＝arctan(L1/WD)＝arctan((L-L*cy/P)/WD)

β2＝arctan(L2/WD)＝arctan((L*cy/P)/WD)

in the above embodiment, the processor 110 automatically calculates the sizes of the angles of view of the camera 40 to be measured in two directions with the optical axis as the center, so as to effectively improve the error of the test result caused by the difference between the theoretical and actual optical centers, and improve the accuracy and automation of the calculation of the angles of view.

In one embodiment, the distance measuring assembly 20 comprises a laser distance meter.

Specifically, the laser range finder mainly utilizes laser as a core part of measurement, is a simpler measurement mode, and the specific laser measurement principle is as follows: d=ct/2. From this formula, it can be known that D refers to the distance between two points measured, c is the speed of light, and t is time. According to the formula, if the actual distance with higher accuracy between two points is obtained, the time required for the laser to go back and forth to the measuring point is known, and the known number of the measurement is brought into the formula, so that the measurement between the two points can be realized. In other embodiments, an appropriate ranging apparatus may be selected according to actual situations, which will not be described herein.

In the above embodiment, the distance measuring assembly 20 is determined as a laser distance measuring device. Because the advantage that laser range finder itself precision is high conveniently carries, can reduce measuring error, can also ensure that measurement accuracy is higher.

It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to be limiting. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure in accordance with the embodiments provided herein.

It is to be understood that the drawings are merely illustrative of some embodiments of the present utility model and that it is possible for those skilled in the art to adapt the present utility model to other similar situations without the need for inventive work. In addition, it should be appreciated that while the development effort might be complex and lengthy, it will nevertheless be a routine undertaking of design, fabrication, or manufacture for those of ordinary skill having the benefit of this disclosure, and further having the benefit of this disclosure.

The term "embodiment" in this disclosure means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive. It will be clear or implicitly understood by those of ordinary skill in the art that the embodiments described in the present utility model can be combined with other embodiments without conflict.

The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.

Claims (10)

1. A camera angle of view testing arrangement, characterized in that includes: a support, a ranging assembly, and a target;

the camera to be tested is movably arranged on the bracket;

the target is arranged in the visual field range of the camera to be detected, and is in a grid pattern;

the distance measuring assembly is arranged on the support and opposite to the target in position and used for measuring the horizontal distance between the camera to be measured and the target.

2. The camera view angle testing device of claim 1, wherein the bracket comprises a vertical rail, a camera fixture, and a camera slider;

the vertical guide rail is movably connected with the camera slider;

the camera clamp is fixedly connected with the camera sliding block;

the camera clamp is used for fixing the camera to be tested.

3. The camera field angle testing device of claim 1, wherein the target comprises a target rod and a target disk;

the setting direction of the target rod corresponds to the setting direction of the bracket;

the target disc is fixedly arranged on the target rod, and the target disc is in a lattice pattern.

4. The camera view angle testing device of claim 3, further comprising a target slide rail and a target slide block;

one end of the target sliding rail is close to the bracket and extends along the direction away from the bracket;

the target sliding block is movably arranged on the target sliding rail;

the target rod is fixedly connected with the target sliding block, so that the target sliding block drives the target disc to move in a direction close to the camera to be detected or in a direction far away from the camera to be detected.

5. The camera angle of view testing apparatus of claim 4, wherein,

the target sliding rail is provided with a plurality of positioning holes, and the positioning holes are arranged at intervals along the extending direction of the target sliding rail;

the target slide block is provided with an adjusting hole;

the camera view angle testing device further comprises a locating pin; the positioning pin is matched with any one of the positioning holes and the adjusting hole.

6. The camera view angle testing device of claim 4, further comprising a drive assembly;

the driving assembly is in driving connection with the target slide block; and the target sliding block is used for driving the target sliding block to move along the target sliding rail.

7. The camera view angle testing device of claim 6, wherein the drive assembly comprises a screw and a straight drive;

the screw rod penetrates through the target sliding block;

the straight driving device is connected with the screw rod in a driving way and is used for driving the screw rod to rotate so as to drive the target disc to move in a direction close to the camera to be detected or in a direction far away from the camera to be detected.

8. The camera field angle testing device of claim 1, further comprising a conveyor belt assembly;

the target is arranged on the conveyor belt assembly, and the conveyor belt assembly is used for driving the target to move towards the direction close to the camera to be detected or move towards the direction far away from the camera to be detected.

9. The camera view angle testing device of claim 1, further comprising a processor;

the processor is electrically connected with the camera to be detected and the ranging component respectively;

the processor is used for acquiring the image acquired by the camera to be detected and the distance acquired by the distance measuring component and calculating the angle of view of the camera to be detected.

10. The camera field angle testing device of claim 1, wherein the ranging assembly comprises a laser range finder.