CN109348217A - A kind of graph card, device and method parsing power for testing fish eye lens - Google Patents
A kind of graph card, device and method parsing power for testing fish eye lens Download PDFInfo
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- CN109348217A CN109348217A CN201811574729.4A CN201811574729A CN109348217A CN 109348217 A CN109348217 A CN 109348217A CN 201811574729 A CN201811574729 A CN 201811574729A CN 109348217 A CN109348217 A CN 109348217A
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- graph card
- fish
- eye lens
- parsing power
- testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras
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- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
This application discloses a kind of for testing graph card, the device and method of fish eye lens parsing power, and the graph card is hemispherical.By taking pictures with fish-eye camera module to hemispheric graph card, according to the test image of acquisition it is determined that fish-eye parsing power, the hemispherical setting of graph card is simple and test method is also simple, the result accuracy rate obtained is high.
Description
Technical field
The present invention relates to field of camera technology, more particularly to a kind of graph card for testing fish eye lens parsing power, dress
It sets and method.
Background technique
Currently, the field angle of common camera in the market, less than 90 °, wide-angle camera can be used flat less than 180 °
Face type graph card test camera shooting header parsing power, and fish-eye camera field angle is 180 °, plane graph card is unable to satisfy flake camera shooting
The requirement of head.
Therefore, how to design a kind of new graph card to measure the parsing power of fish-eye camera, be those skilled in the art urgently
Technical problem to be solved.
Summary of the invention
In view of this, the purpose of the present invention is to provide it is a kind of for test the fish eye lens parsing graph card of power, device and
Method, graph card setting is simple, Easy Test, and accuracy rate is high.Its concrete scheme is as follows:
A kind of graph card parsing power for testing fish eye lens, the graph card are hemispherical.
Preferably, in provided in an embodiment of the present invention above-mentioned for testing in the graph card of fish eye lens parsing power, the figure
The width of card is the semi-perimeter of bottom circle in the hemispherical；
Ratio of the line width of the graph card between the number of lines in the width and the graph card of the graph card.
Preferably, in the above-mentioned graph card for parsing power for testing fish eye lens provided in an embodiment of the present invention, when described
When fish eye lens is 13,000,000 pixel, the number of lines is decremented to 800 to set rule from 2400 in the graph card.
The embodiment of the invention also provides a kind of for testing the device of fish eye lens parsing power, comprising: has flake mirror
The camera module of head and such as above-mentioned graph card provided in an embodiment of the present invention.
Fish eye lens is tested using above-mentioned apparatus provided in an embodiment of the present invention the embodiment of the invention also provides a kind of
The method for parsing power, comprising:
By taking pictures with fish-eye camera module to hemispheric graph card, test image is obtained；
According to the test image of acquisition, the fish-eye parsing power is determined.
Preferably, in the method for above-mentioned test fish eye lens parsing power provided in an embodiment of the present invention, the graph card is adopted
It is designed with following formula:
Wherein, R is the radius of bottom circle in the hemispherical, and x is the width of the graph card, and λ is lines in the graph card
Number, y be the graph card line width.
It can be seen from the above technical proposal that provided by the present invention a kind of for testing the figure of fish eye lens parsing power
Card, device and method, the graph card are hemispherical.By taking pictures with fish-eye camera module to hemispheric graph card,
According to the test image of acquisition it is determined that simple and test method is arranged in fish-eye parsing power, the hemispherical of graph card
Simply, the result accuracy rate obtained is high.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structural schematic diagram provided in an embodiment of the present invention for parsing the graph card of power for testing fish eye lens；
Fig. 2 is a certain screenshot of the graph card provided in an embodiment of the present invention after being photographed；
Fig. 3 is the method flow diagram that test fish eye lens provided in an embodiment of the present invention parses power.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of graph card that power is parsed for testing fish eye lens, as shown in Figure 1, the graph card is hemisphere
Shape.
Further, in the specific implementation, in above-mentioned graph card provided in an embodiment of the present invention, the width of the graph card can
Semi-perimeter to be designed as bottom circle (circle i.e. in hemispherical the centre of sphere as the center of circle) in the hemispherical；The line of the graph card
Wide (i.e. the width of lines in graph card) can be designed as the ratio in the width and the graph card of the graph card between the number of lines
Value.By taking pictures with fish-eye camera module to hemispheric graph card, according to the test image of acquisition it is determined that
Fish-eye parsing power, process are very simple.
Further, in the specific implementation, in above-mentioned graph card provided in an embodiment of the present invention, in the graph card
The number of lines can be designed with screenshot shown in Figure 2.The number design of lines in the graph card that pixel does not design simultaneously
It is different.Specifically, when the fish eye lens is 13,000,000 pixel, the number of lines can be to set rule in the graph card
Rule is decremented to 800 from 2400.The setting rule, which can be, subtracts 100 every time, i.e., the number of lines can be in graph card
2400、2300、2200、2100…800。
Based on the same inventive concept, the embodiment of the invention also provides a kind of for testing the dress of fish eye lens parsing power
It sets, comprising: there is fish-eye camera module and such as above-mentioned graph card provided in an embodiment of the present invention.
Based on the same inventive concept, above-mentioned dress provided in an embodiment of the present invention is used the embodiment of the invention also provides a kind of
The method to test fish eye lens parsing power is set, the principle solved the problems, such as due to this method and aforementioned one kind are for testing flake mirror
The graph card of header parsing power is similar, therefore the implementation of this method may refer to the reality of the graph card for testing fish eye lens parsing power
It applies, overlaps will not be repeated.
In the specific implementation, the method for test fish eye lens parsing power provided in an embodiment of the present invention, as shown in figure 3, tool
Body the following steps are included:
S301, by taking pictures with fish-eye camera module to hemispheric graph card, obtain test image；
S302, the test image according to acquisition determine the fish-eye parsing power.
Further, in the specific implementation, in the side of above-mentioned test fish eye lens parsing power provided in an embodiment of the present invention
In method, the graph card can be designed using following formula:
Wherein, R is the radius of bottom circle in the hemispherical, and x is the width of the graph card, and λ is lines in the graph card
Number, y be the graph card line width.
To sum up, provided in an embodiment of the present invention a kind of for testing graph card, the device and method of fish eye lens parsing power, institute
Stating graph card is hemispherical.By taking pictures with fish-eye camera module to hemispheric graph card, according to the test chart of acquisition
As it is determined that fish-eye parsing power, the hemispherical setting of graph card is simple and test method is also simple, the result obtained
Accuracy rate is high.
Finally, it is to be noted that, herein, relational terms be used merely to by an entity or operation with it is another
A entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this actual
Relationship or sequence.Moreover, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion,
So that the process, method, article or equipment for including a series of elements not only includes those elements, but also including not having
The other element being expressly recited, or further include for elements inherent to such a process, method, article, or device.Do not having
There is the element limited in the case where more limiting by sentence "including a ...", it is not excluded that in the mistake including the element
There is also other identical elements in journey, method, article or equipment.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Graph card, the device and method to provided by the present invention for testing fish eye lens parsing power have carried out in detail above
It introduces, used herein a specific example illustrates the principle and implementation of the invention, the explanation of above embodiments
It is merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to this
The thought of invention, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification is not answered
It is interpreted as limitation of the present invention.
Claims (6)
1. a kind of for testing the graph card of fish eye lens parsing power, which is characterized in that the graph card is hemispherical.
2. according to claim 1 for testing the graph card of fish eye lens parsing power, which is characterized in that the width of the graph card
Degree is the semi-perimeter of bottom circle in the hemispherical；
Ratio of the line width of the graph card between the number of lines in the width and the graph card of the graph card.
3. according to claim 2 for testing the graph card of fish eye lens parsing power, which is characterized in that when the flake mirror
When head is 13,000,000 pixel, the number of lines is decremented to 800 to set rule from 2400 in the graph card.
4. a kind of for testing the device of fish eye lens parsing power characterized by comprising have fish-eye camera module
With graph card as described in any one of claims 1 to 3.
5. a kind of method for testing fish eye lens parsing power using device as claimed in claim 4, which is characterized in that packet
It includes:
By taking pictures with fish-eye camera module to hemispheric graph card, test image is obtained；
According to the test image of acquisition, the fish-eye parsing power is determined.
6. the method for test fish eye lens parsing power according to claim 5, which is characterized in that the graph card is using following
Formula is designed:
Wherein, R is the radius of bottom circle in the hemispherical, and x is the width of the graph card, and λ is the number of lines in the graph card
Mesh, y are the line width of the graph card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574729.4A CN109348217A (en) | 2018-12-21 | 2018-12-21 | A kind of graph card, device and method parsing power for testing fish eye lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574729.4A CN109348217A (en) | 2018-12-21 | 2018-12-21 | A kind of graph card, device and method parsing power for testing fish eye lens |
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| Publication Number | Publication Date |
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| CN109348217A true CN109348217A (en) | 2019-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811574729.4A Pending CN109348217A (en) | 2018-12-21 | 2018-12-21 | A kind of graph card, device and method parsing power for testing fish eye lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110191337A (en) * | 2019-06-17 | 2019-08-30 | 东莞市宇瞳光学科技股份有限公司 | A kind of graph card test board, camera lens parsing force test device and test method |
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| CN203849004U (en) * | 2014-04-29 | 2014-09-24 | 凤凰光学(广东)有限公司 | Projection target surface used for detecting resolution of ultra-wide angle fish-eye lens and detection device applying same |
| CN104330872A (en) * | 2014-10-27 | 2015-02-04 | 东莞市明镜光学有限公司 | Large-aperture ultra-wide-angle optical lens |
| CN106527039A (en) * | 2016-09-30 | 2017-03-22 | 歌尔科技有限公司 | Resolution test chart and resolution test method of ultra-wide angle lens |
| CN107449586A (en) * | 2017-08-16 | 2017-12-08 | 信利光电股份有限公司 | A kind of fish-eye method of testing and test device |
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2018
- 2018-12-21 CN CN201811574729.4A patent/CN109348217A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203849004U (en) * | 2014-04-29 | 2014-09-24 | 凤凰光学(广东)有限公司 | Projection target surface used for detecting resolution of ultra-wide angle fish-eye lens and detection device applying same |
| CN104330872A (en) * | 2014-10-27 | 2015-02-04 | 东莞市明镜光学有限公司 | Large-aperture ultra-wide-angle optical lens |
| CN106527039A (en) * | 2016-09-30 | 2017-03-22 | 歌尔科技有限公司 | Resolution test chart and resolution test method of ultra-wide angle lens |
| CN107449586A (en) * | 2017-08-16 | 2017-12-08 | 信利光电股份有限公司 | A kind of fish-eye method of testing and test device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110191337A (en) * | 2019-06-17 | 2019-08-30 | 东莞市宇瞳光学科技股份有限公司 | A kind of graph card test board, camera lens parsing force test device and test method |
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Application publication date: 20190215 |