CN207677915U - Camera visual field angle measuring system and equipment - Google Patents
Camera visual field angle measuring system and equipment Download PDFInfo
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- CN207677915U CN207677915U CN201721528244.2U CN201721528244U CN207677915U CN 207677915 U CN207677915 U CN 207677915U CN 201721528244 U CN201721528244 U CN 201721528244U CN 207677915 U CN207677915 U CN 207677915U
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Abstract
A kind of camera visual field angle measuring system of the utility model offer and equipment.Wherein, system includes：Test pattern, plane mirror and Test bench；The test pattern is non-closed cylinder, and multiple bar patens are equipped on the inside of the cylinder；The imaging surface of the plane mirror is placed towards cylinder inside, and along the bottom surface radius of the cylinder, and is in contact with the first side of the cylinder；The Test bench is set to the bottom surface circle centre position of the cylinder, for fixing and adjusting the orientation of camera to be tested in test, so that the camera to be tested is towards on the inside of the cylinder.Camera visual field angle measuring system provided in this embodiment can measure the field angle more than 180 °.
Description
Technical field
The utility model is related to field of measuring technique more particularly to a kind of camera visual field angle measuring system and equipment.
Background technology
In camera, using the camera lens of camera as vertex, the maximum magnitude of camera lens can be passed through with the image of measured target
The angle that constitutes of two edges, referred to as field angle.The method of the existing field angle for measuring camera mainly has following two：
The first is image height based on camera and focal length calculates field angle, i.e. θ=2arttan ((h/2)/f),.
Wherein h is image height, and f is lens focus, and θ is field angle.But this method is only applicable to the smaller camera that distorts, if
Camera distortion is larger, and image height will appear error, leads to field angle measuring error.Second is camera in real scene shooting process
In, field angle is calculated based on the distance by camera visual range and camera to object, i.e. θ=2arctan ((d/2)/
C), wherein d is the diameter of camera visual range, and c is distance of the camera to object.This method is suitable for test field angle
Camera less than 180 °.
In order to meet wider array of field range demand, there is the camera that many field angles are more than 180 °, the camera
Bigger less than the distortion degree of 180 ° of camera than field angle, above two method is not suitable for testing field angle more than 180 °
Camera.Therefore, it is necessary to a kind of field angles of the new camera for field angle more than 180 ° to test system.
Utility model content
A kind of camera visual field angle measuring system of many aspects offer and equipment of the utility model, to measure camera
Field angle, especially greater than 180 ° of field angle.
The utility model provides a kind of camera visual field angle measuring system, including：
Test pattern, plane mirror and Test bench；
The test pattern is non-closed cylinder, and multiple bar patens are equipped on the inside of the cylinder；The plane mirror
Imaging surface is placed towards cylinder inside, and along the bottom surface radius of the cylinder, and is connected with the first side of the cylinder
It touches；
The Test bench is set to the bottom surface circle centre position of the cylinder, for being fixed in test and adjusting to be tested take the photograph
As the orientation of head, so that the camera to be tested is towards on the inside of the cylinder.
In an optional embodiment, the central angle of the cylinder is greater than or equal to 90 °.
In an optional embodiment, the length of the plane mirror is greater than or equal to the bottom surface radius of the cylinder.
In an optional embodiment, the Test bench is additionally operable to adjust the camera to be tested in test
Angle, so that the optical axis of the camera to be tested is vertical with the second side of the cylinder and intersects.
In an optional embodiment, the multiple bar paten is set uniformly, continuously along the directrix direction of the cylinder
The different striped of multiple visualization features for setting.
In an optional embodiment, camera visual field angle measuring system further includes：
Electronic equipment, the test pattern image for receiving the thecamera head to be tested, and according to the test chart
The bar paten for including in card graphic calculates the field angle of the camera to be tested；
Wherein, the test pattern image is the camera to be tested in test to the test pattern and/or institute
State what the virtual image of the test pattern in the plane mirror was shot.
The utility model also provides a kind of camera shooting suitable for the camera visual field angle measuring system described in above-described embodiment
Head visual field angle measuring method, including：
Receive the test pattern image of the thecamera head to be tested, the test pattern image is described to be tested takes the photograph
As head is shot to obtain in test to the virtual image of the test pattern and/or the test pattern in the plane mirror
's；
According to the bar paten for including in the test pattern image, the field angle of the camera to be tested is calculated.
In an optional embodiment, according to the bar paten for including in the test pattern image, calculate described to be measured
The field angle of camera is tried, including：
According to the central angle of the bar paten and the cylinder that include in the test pattern image, the test is calculated
The corresponding central angle of graph card image；
According to the optical axis of the corresponding central angle of the test pattern image and the camera to be tested described virtual
Position on cylinder, determines the field angle of the camera to be tested, and the virtual cylinder refers to the test pattern and described
The cylinder of virtual image synthesis of the test pattern in the plane mirror.
It is described according to the bar paten for including in the test pattern image and the column in an optional embodiment
The central angle in face calculates the corresponding central angle of the test pattern image, including：
Identify the quantity for the bar paten for including in the test pattern image；According to the corresponding center of circle of single bar paten
The quantity for the bar paten for including in angle and the test pattern image calculates the corresponding center of circle of the test pattern image
Angle；The corresponding central angle of the single bar paten is the ratio of bar paten sum on the central angle and the cylinder of the cylinder
Value；Or
Calculate the sum of the width of bar paten that the test pattern image includes on the cylinder and the cylinder
The ratio of directrix length；According to the central angle of the ratio and the cylinder, the corresponding center of circle of the test pattern image is calculated
Angle.
In an optional embodiment, the quantity for the bar paten for including in the identification test pattern image, packet
It includes：
In the case where the field angle of the camera to be tested is less than or equal to 180 °, directly by the test pattern figure
As the quantity of the bar paten shown, the quantity as the bar paten that the test pattern image includes；
In the case where the field angle of the camera to be tested is more than 180 °, the test pattern image is shown
The quantity of bar paten adds 1, the quantity as the bar paten that the test pattern image includes.
It is described according to the corresponding central angle of the test pattern image and described to be tested in an optional embodiment
Position of the optical axis of camera on virtual cylinder determines the field angle of the camera to be tested, including：
It is vertical with the second side of the cylinder in the optical axis of the camera to be tested and when intersecting, by the test chart
The corresponding central angle of card graphic is multiplied by 2, the field angle as the camera to be tested；Or
It is vertical with the first side of the cylinder in the optical axis of the camera to be tested and when intersecting, by the test chart
Field angle of the corresponding central angle of card graphic as the camera to be tested.
The utility model also provides a kind of electronic equipment, including：Processor and the memory being connected to the processor；
The memory, for storing one or more computer instruction；
The processor, for executing one or more computer instruction, for：
Receive the test pattern image of the thecamera head to be tested, the test pattern image is described to be tested takes the photograph
As head is shot to obtain in test to the virtual image of the test pattern and/or the test pattern in the plane mirror
's；
According to the bar paten for including in the test pattern image, the field angle of the camera to be tested is calculated.
In the utility model embodiment, test pattern image be camera to be tested in test to test pattern and/
Or the virtual image of the test pattern in plane mirror is shot, compared to only shooting test pattern, in test pattern image
Including bar paten it is more, and then the field angle of camera bigger to be tested can be measured.When test pattern image is corresponding
When central angle is more than 90 °, the field angle for being more than 180 ° of camera to be tested can be measured.Further, the present embodiment passes through
The virtual image in plane mirror expands the central angle of cylinder, and no need to increase the central angles of test pattern so that is expanding cylinder central angle
While, save the occupied space of measuring system.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and constitutes one of the utility model
Point, the exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the utility model
Improper restriction.In the accompanying drawings：
Fig. 1 is the first front view of the camera visual field angle measuring system that one embodiment of the utility model provides；
Fig. 2 is the second front view of the camera visual field angle measuring system that another embodiment of the utility model provides；
Fig. 3 is the vertical view for the camera visual field angle measuring system that another embodiment of the utility model provides；
Fig. 4 is the third front view for the camera visual field angle measuring system that another embodiment of the utility model provides；
Fig. 5 is the flow diagram for the camera visual field angle measuring method that another embodiment of the utility model provides；
Fig. 6 is the schematic diagram for the test pattern image that another embodiment of the utility model provides；
Fig. 7 is the structural schematic diagram for the electronic equipment that another embodiment of the utility model provides.
Specific implementation mode
It is specific below in conjunction with the utility model to keep the purpose of this utility model, technical solution and advantage clearer
Technical solutions of the utility model are clearly and completely described in embodiment and corresponding attached drawing.Obviously, described embodiment
Only it is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, this field
The every other embodiment that those of ordinary skill is obtained without making creative work, belongs to the utility model
The range of protection.
Below in conjunction with attached drawing, the technical solution that various embodiments of the utility model provides is described in detail.
Fig. 1 is the first front view of the camera visual field angle measuring system that one embodiment of the utility model provides.Such as Fig. 1 institutes
Show, which includes：Test pattern 10, plane mirror 20 and Test bench 30.
Test pattern 10 is non-closed cylinder, and multiple bar patens are equipped on the inside of cylinder.Optionally, test pattern 10 can
To be rectangle graph card, and it is bent into cylinder.Test pattern 10 can also be the fixed cylinder graph card of form.Wherein, cylinder is one
Straight line along one determines oriented parallel and moves to be formed by curved surface.Preferably, cylinder is non-closed cylindrical surface.Multiple bar charts
Case can be multiple stripeds as shown in Figure 1, can also be rectangle frame as shown in Figure 2, can also be other and be in figures of bar shaped
Case.
As shown in Figure 1, test pattern 10 includes first side 11 and the second side 12 positioned at cylinder left and right ends.Its
In, plane mirror 20 is in contact with first side 11.Optionally, the side with first side 11 of plane mirror 20 is connect.Plane mirror 20
Including imaging surface and coat side, as shown in Figure 1, the imaging surface of plane mirror 20 is towards on the inside of cylinder.
Fig. 3 is the vertical view for the camera visual field angle measuring system that another embodiment of the utility model provides.Such as Fig. 3 institutes
Show, the bottom surface of cylinder is a sector region, and plane mirror 20 is placed along the bottom surface radius of cylinder.Optionally, the bottom edge of plane mirror 20
On the bottom surface of cylinder.After light is irradiated to test pattern 10, can further it be reflected into plane mirror 20, in plane mirror 20
Will present with test pattern 10 it is equidistant, etc. big, the upright virtual image 50, as shown in Figure 3.It is tested in test pattern 10 and plane mirror 20
The virtual cylinder that the virtual image of graph card can collectively form.
As shown in figure 3, Test bench 30 is set to the bottom surface circle centre position of cylinder, for fixing and adjusting to be measured in test
The orientation of camera 40 is tried, so that camera to be tested 40 is towards on the inside of cylinder.
The orientation of camera 40 to be tested includes the direction and position of camera 40 to be tested.The side of camera 40 to be tested
To the direction for the optical axis for referring to camera 40 to be tested.The position of camera 40 to be tested refers to camera to be tested 40 relative to test
The position of graph card 10 and plane mirror 20.
Optionally, Test bench 30 includes the pedestal positioned at 30 bottom end of Test bench, the support element being fixedly connected with pedestal,
And the fixture being flexibly connected with support element.Wherein, the length of support element is adjustable.By adjusting the position of pedestal 30, survey can be made
Examination pedestal 30 is located at the bottom surface circle centre position of cylinder.By adjusting the length of support element, make through the fixed camera shooting to be tested of fixture
First 40 are located in the cylinder space that cylinder surrounds.Based on being flexibly connected between fixture and support element, can by floating holder come
Camera 40 to be tested is adjusted towards cylinder inside.
Optionally, camera 40 to be tested may be mounted on different carriers.In one example, camera 40 to be tested
It is installed in camera module.Based on this, camera module can be fixed on fixture, and camera module is adjusted by fixture
In camera to be tested 40 orientation so that camera to be tested 40 is towards on the inside of cylinder.In another example, to be tested to take the photograph
It is installed on the capture apparatus such as mobile phone, computer, camera as first 40.Based on this, capture apparatus can be fixed in fixture, pass through folder
The orientation of camera to be tested 40 in tool adjustment capture apparatus, so that camera to be tested 40 is towards on the inside of cylinder.
In the present embodiment, based on camera to be tested towards cylinder inside, camera to be tested can take test chart
The virtual cylinder that the virtual image of test pattern collectively forms in card and plane mirror, compared to the cylinder of test pattern, virtual cylinder
The central angle bigger of bottom surface, enabling measure the field angle of camera bigger to be tested.Further, the present embodiment passes through flat
The mode of face mirror imaging expands the central angle of cylinder, and plane mirror is placed along bottom surface radius so that is expanding cylinder central angle
Meanwhile saving the occupied space of measuring system.
In an optional embodiment, the central angle of cylinder is greater than or equal to 90 °.In order to make entire cylinder be presented on plane
In mirror 20, the length of plane mirror 20 should be greater than or equal to cylinder bottom surface radius.As shown in figure 3, the central angle of cylinder is equal to
90 °, the length of plane mirror 20 is equal to bottom surface radius.The virtual image of test pattern 10 and entire cylinder etc. are big, equidistant in plane mirror 20,
Therefore the central angle of the virtual image is also 90 °, and the central angle of virtual cylinder is 180 ° of the sum of the central angle of cylinder and the central angle of the virtual image.
If the central angle of cylinder is more than 90 degree, correspondingly, the central angle of the virtual image of test pattern 10 can also be more than in plane mirror 20
90 °, the central angle of virtual cylinder can be more than 180 °.The void that central angle is greater than or equal to 180 ° is shot by camera 30 to be tested
Quasi- cylinder, can measure the field angle of to be tested camera 30 of the field angle more than or equal to 180 °.
In an optional embodiment, as shown in figure 3, Test bench 30 is additionally operable to adjust camera to be tested in test
40 angle.Optionally, Test bench 30 adjusts the angle of camera 40 to be tested by fixture thereon, so as to be tested take the photograph
Optical axis as first 40 is vertical with the second side 12 of cylinder and intersects.When the optical axis of camera 40 to be tested hangs down with second side 12
When direct join is intersected, camera 40 to be tested can take test pattern 10 or test chart by the field angle of half just
Card 10 and the virtual image of the test pattern 10 in plane mirror 20.It in turn, can be according to the corresponding circle of test pattern image taken
Heart angle obtains the field angle of 40 half of camera to be tested.Based on this, the corresponding central angle of test pattern image can be multiplied by 2,
Field angle as camera 40 to be tested.
Optionally, if the bottom surface radius that the length of plane mirror 20 is equal to cylinder can also pass through survey as depicted in figs. 1 and 2
Examination pedestal 30 adjusts the angle of camera 40 to be tested in test, so that the optical axis of camera to be tested 40 is remote with plane mirror 20
Side from test pattern is vertical and intersects.
Based on the present embodiment provides measuring system, the central angle of test pattern image is the one of camera field angle to be tested
Half, you can measure the field angle of camera to be tested.The field angle maximum of camera to be tested does not exceed 360 °, is based on this,
The central angle of virtual cylinder can be greater than or equal to 180 °, you can measure the camera shooting to be tested that field angle is less than or equal to 360 °
Head.Preferably, in order to further save the occupied space of virtual cylinder, the central angle of virtual cylinder is equal to 180 °, i.e. cylinder
Central angle is equal to 90 °, and the length of plane mirror is equal to the bottom surface radius of cylinder, as shown in Figure 3.
In an optional embodiment, as shown in Figure 1 or 2, the multiple bar patens being equipped on the inside of cylinder are along cylinder
Directrix direction uniformly, the different striped of multiple visualization features for being arranged continuously.Wherein, along cylinder between multiple bar patens
Directrix direction it is of same size.
Optionally, visualization feature includes but not limited to color, gray scale, brightness, texture etc..For example, multiple stripeds are Fig. 1
The chequered with black and white striped shown.In another example multiple stripeds be Fig. 2 shows the different striped of texture.
In the present embodiment, the precision of visual field angular measurement can be controlled by adjusting the density of candy strip on test pattern.
Moreover, by according to the bar paten for including in test pattern image, the field angle of camera to be tested is calculated so that calculated
Journey is simple and clear, reduces the operation time of data.
In an optional embodiment, camera visual field angle measuring system further includes electronic equipment.As shown in figure 4, electronics
Equipment 60 is used to receive the test pattern image that camera 40 to be tested transmits, and according to the bar shaped for including in test pattern image
Pattern calculates the field angle of camera 40 to be tested.Optionally, electronic equipment 60 can by it is wired or wirelessly with wait for
It tests camera 40 and establishes communication connection, and test pattern image is received by the communication connection of foundation.Wherein, test pattern figure
Seem that the virtual image 50 of the camera 40 to be tested in test to test pattern 10 and/or test pattern 10 in plane mirror 20 carries out
What shooting obtained.
Optionally, electronic equipment 60 can be computer, mobile phone, intelligent robot etc..Electronic equipment 60 passes through its inside
Processor and memory calculate the field angle of camera 40 to be tested according to the bar paten for including in test pattern image.
It is worth noting that processor and memory can also be mounted in camera to be tested.Based on this, the present embodiment
The camera visual field angle measuring system of offer includes test pattern, plane mirror and Test bench.Processing in camera to be tested
Test pattern image can be read in device and memory, and according to the bar paten for including in test pattern image, calculates to be tested take the photograph
As the field angle of head.
The utility model embodiment also provides a kind of camera visual field angle measuring system provided suitable for above-described embodiment
Camera visual field angle measuring method.The executive agent of this method can be electronic equipment, or can be include processor and
The camera to be tested of memory.As shown in figure 5, this approach includes the following steps：
101, the test pattern image of thecamera head to be tested is received, test pattern image is that camera to be tested is being surveyed
The virtual image of test pattern and/or test pattern in plane mirror is shot when examination.
102, according to the bar paten for including in test pattern image, the field angle of camera to be tested is calculated.
In conjunction with the camera visual field angle measuring system that above-described embodiment provides, test pattern is non-closed cylinder, cylinder
Inside is equipped with multiple bar patens；The imaging surface of plane mirror is placed towards cylinder inside, and along the bottom surface radius of cylinder, and and column
The first side in face is in contact；Test bench is set to the bottom surface circle centre position of cylinder, for fixing and adjusting to be measured in test
The orientation of camera is tried, so that camera to be tested is towards on the inside of cylinder.It, can be in the visual field for testing camera to be tested based on this
When angle, camera to be tested is opened, the virtual image of test pattern and/or test pattern in plane mirror is shot, to obtain
Test pattern image.Since camera to be tested can shoot test pattern and/or the virtual image in its field angle, and then basis
Test pattern in test pattern image and/or the virtual image, i.e., virtual cylinder, obtain the field angle of camera to be tested.Wherein, empty
Quasi- cylinder refers to the cylinder of the virtual image synthesis of test pattern and test pattern in plane mirror.
Bar paten on the inside of cylinder is corresponding with central angle.It, can be according to the bar shaped for including in test pattern image based on this
Pattern calculates the corresponding central angle of test pattern image, further obtains the field angle of camera to be tested.
In the present embodiment, test pattern image is camera to be tested in test to test pattern and/or test pattern
What the virtual image in plane mirror was shot, compared to only shooting test pattern, the bar shaped for including in test pattern image
Pattern is more, and then can measure the field angle of camera bigger to be tested.When the corresponding central angle of test pattern is more than 90 °
When, the field angle for being more than 180 ° of shooting virtual column planar survey camera to be tested can be passed through.Further, the present embodiment is logical
The mode for crossing plane mirror imaging expands the central angle of cylinder, and plane mirror is placed along bottom surface radius so that is expanding the cylinder center of circle
While angle, the occupied space of measuring system is saved.
In an optional embodiment, multiple bar patens are the multiple visualization features being arranged along the directrix direction of cylinder
Different stripeds, width of the bar paten along directrix direction correspond to central angle.Correspondingly, the candy strip in test pattern image
Also central angle can be corresponded to, and then according to the bar paten for including in test pattern image, regarding for camera to be tested can be calculated
Rink corner.Optionally, according to the bar paten for including in test pattern image, the field angle for calculating camera to be tested includes following
Two steps.
The first step：According to the central angle of the bar paten and cylinder that include in test pattern image, test pattern is calculated
The corresponding central angle of image.
Optionally, according to whether identical between the bar paten for including in test pattern image, calculating test pattern image
The method of corresponding central angle is different.Specifically include following two situations：
The first situation：The bar paten for including in test pattern image be uniformly, continuously, as depicted in figs. 1 and 2,
Corresponding central angle all same between single bar paten.Based on this, test pattern figure can be identified by image recognition algorithm
The quantity for the bar paten for including as in；Further according to including in the corresponding central angle of single bar paten and test pattern image
Bar paten quantity, calculate the corresponding central angle of test pattern image.
Wherein, the corresponding central angle of single bar paten is the ratio of bar paten sum on the central angle and cylinder of cylinder
Value.In one example, the central angle of cylinder is, for example, 90 °, and bar paten sum is 6 on cylinder, then single bar paten pair
The central angle answered be 90 °/6, i.e., 15 °.If including 10 bar patens in test pattern image, test pattern image is corresponding
Central angle is 10*15 °, i.e., 150 °.
The second situation：The bar paten for including in test pattern image along cylinder the uneven setting in directrix direction, or
Person is of different size along directrix direction.Corresponding central angle is different between namely single bar paten.Based on this, test is calculated
The ratio of the sum of the width of the bar paten that graph card image includes on cylinder and the directrix length of cylinder；According to ratio and cylinder
Central angle, calculate the corresponding central angle of test pattern image.
It optionally, can be first before the sum of width in the bar paten that calculating test pattern image includes on cylinder
Image recognition algorithm is first passed through, identifies the bar paten on test pattern image；The bar shaped on test pattern image is determined again
Width of the pattern on cylinder.In one example, by image recognition algorithm, it includes 6 red to recognize test pattern image
Bar paten, 2 white bar patens and 4 yellow bar patens.Wherein, on cylinder, the width of red bar paten is
The width of 3cm, white bar paten are 2cm, and the width of yellow bar paten is 4cm.Based on this, test pattern image includes
6 bar patens that width is 3cm, 2 bar patens that width is 2cm and 2 bar patens that width is 4cm, bar shaped
The sum of width of pattern is 30cm.Assuming that the directrix length of cylinder is 20cm, then ratio is 30/20, i.e., 1.5.
Cylinder central angle is then multiplied, to be surveyed by then above-mentioned example if the central angle of cylinder is 90 ° with ratio
Attempt the corresponding central angle of card graphic, i.e., 1.5*90 °=135 °.
After obtaining the corresponding central angle of test pattern image, following second steps can be continued to execute.
Second step：According to the optical axis of the corresponding central angle of test pattern image and camera to be tested on virtual cylinder
Position, determine the field angle of camera to be tested.
Optionally, by the fixture on Test bench in above-described embodiment, the angle of camera to be tested is adjusted, so as to wait for
The optical axis for testing camera is vertical with the first side of cylinder and intersect, or make camera to be tested optical axis and cylinder the
Dual side-edge is vertical and intersects.
Vertical in the optical axis of camera to be tested and the second side of cylinder and when intersecting, camera to be tested just can
Test pattern or test pattern and the virtual image of the test pattern in plane mirror are taken by the field angle of half.In turn, may be used
According to the corresponding central angle of test pattern image, to obtain the field angle of camera half to be tested.It, can be by test chart based on this
The corresponding central angle of card graphic is multiplied by 2, the field angle as camera to be tested.
Optionally, if the length of plane mirror be equal to cylinder bottom surface radius, can also by Test bench test when tune
The angle of whole camera to be tested, so that the optical axis of camera to be tested simultaneously phase vertical with side of the plane mirror far from test pattern
It hands over.Based on this, camera to be tested can take the virtual image of the test pattern in plane mirror by the field angle of half just,
Or test pattern and the virtual image of the test pattern in plane mirror.Therefore, the corresponding central angle of test pattern image is multiplied by 2,
Field angle as camera to be tested.
Vertical in the optical axis of camera to be tested and the first side of cylinder and when intersecting, camera to be tested can pass through
Whole field angles take the virtual image of test pattern and test pattern in plane mirror.It, can be directly by test pattern based on this
Field angle of the corresponding central angle of image as camera to be tested.
In the present embodiment, the precision of visual field angular measurement can be controlled by adjusting the density of candy strip on test pattern.
Moreover, by according to the bar paten for including in test pattern image, the field angle of camera to be tested is calculated so that calculated
Journey is simple and clear, reduces the operation time of data.
In an optional embodiment, due to the virtual image of test pattern and test pattern or so in plane mirror on the contrary, and surveying
The first side for attempting card is in contact with plane mirror, can lead to bar paten and test pattern close to first side in plane mirror
In between the bar paten of first side almost without gap, and the two bar patens are stripeds, and the face of striped
The visualization features such as color, brightness, gray scale are identical.Then, it is measured in based on camera visual field angle measuring system shown in Fig. 3 big
In the field angle of 180 ° of camera to be tested, and the optical axis of camera to be tested is vertical with second side and when intersecting, test
The case where will appear a wider bar paten being merged by two bar patens on graph card image, such as dotted line frame in Fig. 6
Shown in.Test pattern image is shown in the quantity for the bar paten for including in identifying test pattern image based on this
The quantity of bar paten add 1, the quantity as the bar paten that test pattern image includes.
It is worth noting that if the visualization feature of bar paten is texture, close to first side in plane mirror
Bar paten is with grain direction of bar paten of close first side or so in test pattern on the contrary, then in test pattern image
On the case where being not in a wider bar paten being merged by two bar patens, then directly by test pattern image
The quantity of the bar paten shown, the quantity as the bar paten that test pattern image includes.If bar paten is square
Shape frame, and color, brightness, gray scale are not filled by rectangle frame etc., then be not in by two bar charts on test pattern image
The case where wider bar paten that case is merged into, the then number of the bar paten directly shown test pattern image
Amount, the quantity as the bar paten that test pattern image includes.
In another optional embodiment, in based on camera visual field angle measuring system shown in Fig. 3 measure be less than or
The field angle of camera to be tested equal to 180 °, and the optical axis of camera to be tested is vertical with second side and when intersecting, and surveys
Attempt that the texture image at first side will not be taken on card graphic, would not also occur being merged by two bar patens
The case where one wider bar paten, the then quantity of the bar paten directly shown test pattern image, as test
The quantity for the bar paten that graph card image includes.
It is worth noting that when camera to be tested dispatches from the factory, it is known that whether field angle, which is more than 180 °,.This implementation
Example can after camera to be tested manufacture, by the camera visual field angle measuring method based on camera visual field angle measuring system,
Measure the exact field angle of camera to be tested.
The utility model embodiment also provides a kind of electronic equipment, as shown in fig. 7, electronic equipment 700 includes processor 701
And the memory 702 being connect with processor 701.
Memory 702, for storing one or more computer instruction.
Processor 701, for executing one or more computer instruction stored in memory 702, for：Reception waits for
Test the test pattern image of thecamera head, test pattern image be camera to be tested in test to test pattern and/
Or the virtual image of the test pattern in plane mirror is shot；According to the bar paten for including in test pattern image, meter
Calculate the field angle of camera to be tested.
In the present embodiment, test pattern image is camera to be tested in test to test pattern and/or test pattern
What the virtual image in plane mirror was shot, compared to only shooting test pattern, the bar shaped for including in test pattern image
Pattern is more, and then can measure the field angle of camera bigger to be tested.Further, the present embodiment passes through plane mirror imaging
Mode expand the central angle of cylinder, and plane mirror is placed along bottom surface radius so that while expanding cylinder central angle, saving
The occupied space of measuring system.
In an optional embodiment, according to the bar paten for including in test pattern image, calculating waits for processor 701
When testing the field angle of camera, it is specifically used for：According to the center of circle of the bar paten and cylinder that include in test pattern image
Angle calculates the corresponding central angle of test pattern image；According to the corresponding central angle of test pattern image and camera to be tested
Position of the optical axis on virtual cylinder, determine that the field angle of camera to be tested, virtual cylinder refer to test pattern and test
The cylinder of virtual image synthesis of the graph card in plane mirror.
In an optional embodiment, processor 701 is according to the bar paten and column for including in test pattern image
The central angle in face is specifically used for when calculating the corresponding central angle of test pattern image：The item for including in identification test pattern image
The quantity of shape pattern；According to the number for the bar paten for including in the corresponding central angle of single bar paten and test pattern image
Amount calculates the corresponding central angle of test pattern image；The corresponding central angle of single bar paten is the central angle and cylinder of cylinder
The ratio of upper bar paten sum.
Alternatively, calculating directrix length of the sum of the width on cylinder of bar paten that test pattern image includes with cylinder
Ratio；According to the central angle of ratio and cylinder, the corresponding central angle of test pattern image is calculated.
In an optional embodiment, the quantity for the bar paten that processor 701 includes in identifying test pattern image
When, it is specifically used for：In the case where the field angle of camera to be tested is less than or equal to 180 °, directly test pattern image is shown
The quantity of the bar paten shown, the quantity as the bar paten that test pattern image includes；In regarding for camera to be tested
In the case that rink corner is more than 180 °, the quantity for the bar paten that test pattern image is shown is added 1, as test pattern image
Including bar paten quantity.
In an optional embodiment, processor 701 is according to the corresponding central angle of test pattern image and to be tested
Position of the optical axis of camera on virtual cylinder is specifically used for when determining the field angle of camera to be tested：It is taken the photograph to be tested
As the optical axis of head and the second side of cylinder are vertical and when intersecting, the corresponding central angle of test pattern image is multiplied by 2, as waiting for
Test the field angle of camera；Or it is vertical and when intersecting in the optical axis of camera to be tested and the first side of cylinder, it will survey
Attempt field angle of the corresponding central angle of card graphic as camera to be tested.
The utility model embodiment also provides a kind of computer media.One or more meter of computer storage media storage
Calculation machine instruct, when which is computer-executed, it can be achieved that：Receive the survey of thecamera head to be tested
Attempt card graphic, test pattern image be camera to be tested in test to test pattern and/or test pattern in plane mirror
In the virtual image shot；According to the bar paten for including in test pattern image, regarding for camera to be tested is calculated
Rink corner.
The utility model is produced with reference to according to the method, equipment (system) and computer program of the utility model embodiment
The flowchart and/or the block diagrams of product describes.It should be understood that can be realized by computer program instructions in flowchart and/or the block diagram
Each flow and/or block and flowchart and/or the block diagram in flow and/or box combination.These meters can be provided
Calculation machine program instruction is to the place of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices
Device is managed to generate a machine so that the instruction executed by computer or the processor of other programmable data processing devices is produced
Life is for realizing the function of being specified in one flow of flow chart or multiple flows and/or one box of block diagram or multiple boxes
Device.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
In a typical configuration, computing device includes one or more processors (CPU), input/output interface, net
Network interface and memory.
Memory may include computer-readable medium in volatile memory, random access memory (RAM) and/or
The forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable medium
Example.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology realizes information storage.Information can be computer-readable instruction, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase transition internal memory (PRAM), static RAM (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), fast flash memory bank or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storages, magnetic tape cassette, tape magnetic disk storage or other magnetic storage apparatus
Or any other non-transmission medium, it can be used for storage and can be accessed by a computing device information.As defined in this article, it calculates
Machine readable medium does not include temporary computer readable media (transitory media), such as data-signal and carrier wave of modulation.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
Including so that process, method, commodity or equipment including a series of elements include not only those elements, but also wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that wanted including described
There is also other identical elements in the process of element, method, commodity or equipment.
The above description is only the embodiments of the present invention, is not intended to limit the utility model.For this field
For technical staff, various modifications and changes may be made to the present invention.All institutes within the spirit and principle of the utility model
Any modification, equivalent substitution, improvement and etc. of work, should be included within the right of the utility model.
Claims (6)
1. a kind of camera visual field angle measuring system, which is characterized in that including：
Test pattern, plane mirror and Test bench；
The test pattern is non-closed cylinder, and multiple bar patens are equipped on the inside of the cylinder；The imaging of the plane mirror
It on the inside of facing towards the cylinder, and places along the bottom surface radius of the cylinder, and is in contact with the first side of the cylinder；
The Test bench is set to the bottom surface circle centre position of the cylinder, for being fixed in test and adjusting camera to be tested
Orientation so that the camera to be tested is towards on the inside of the cylinder.
2. system according to claim 1, which is characterized in that the central angle of the cylinder is greater than or equal to 90 °.
3. system according to claim 1, which is characterized in that the length of the plane mirror is greater than or equal to the cylinder
Bottom surface radius.
4. system according to claim 1, which is characterized in that the Test bench is additionally operable in test described in adjustment
The angle of camera to be tested, so that the optical axis of the camera to be tested is vertical with the second side of the cylinder and intersects.
5. system according to claim 1, which is characterized in that the multiple bar paten is along the directrix side of the cylinder
The striped different to the multiple visualization features being arranged uniformly, continuously.
6. according to claim 1-5 any one of them systems, which is characterized in that further include：
Electronic equipment, the test pattern image for receiving the thecamera head to be tested, and according to the test pattern figure
The bar paten for including as in calculates the field angle of the camera to be tested；
Wherein, the test pattern image is the camera to be tested in test to the test pattern and/or the survey
What the virtual image for attempting to be stuck in the plane mirror was shot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721528244.2U CN207677915U (en) | 2017-11-15 | 2017-11-15 | Camera visual field angle measuring system and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721528244.2U CN207677915U (en) | 2017-11-15 | 2017-11-15 | Camera visual field angle measuring system and equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207677915U true CN207677915U (en) | 2018-07-31 |
Family
ID=62964144
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721528244.2U Withdrawn - After Issue CN207677915U (en) | 2017-11-15 | 2017-11-15 | Camera visual field angle measuring system and equipment |
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| Country | Link |
|---|---|
| CN (1) | CN207677915U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107749981A (en) * | 2017-11-15 | 2018-03-02 | 歌尔科技有限公司 | Camera visual field angle measuring method, equipment and system |
| CN110006634A (en) * | 2019-04-15 | 2019-07-12 | 北京京东方光电科技有限公司 | Visual field angle measuring method, visual field angle measuring device, display methods and display equipment |
-
2017
- 2017-11-15 CN CN201721528244.2U patent/CN207677915U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107749981A (en) * | 2017-11-15 | 2018-03-02 | 歌尔科技有限公司 | Camera visual field angle measuring method, equipment and system |
| CN107749981B (en) * | 2017-11-15 | 2024-01-30 | 歌尔光学科技有限公司 | Camera field angle measurement method and system |
| CN110006634A (en) * | 2019-04-15 | 2019-07-12 | 北京京东方光电科技有限公司 | Visual field angle measuring method, visual field angle measuring device, display methods and display equipment |
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Effective date of registration: 20201022 Address after: 261031 north of Yuqing street, east of Dongming Road, high tech Zone, Weifang City, Shandong Province (Room 502, Geer electronic office building) Patentee after: GoerTek Optical Technology Co.,Ltd. Address before: 266104 Laoshan Qingdao District North House Street investment service center room, Room 308, Shandong Patentee before: GOERTEK TECHNOLOGY Co.,Ltd. |
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