CN109819242A - A kind of flare test method, system and readable storage medium storing program for executing - Google Patents
A kind of flare test method, system and readable storage medium storing program for executing Download PDFInfo
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- CN109819242A CN109819242A CN201910020545.1A CN201910020545A CN109819242A CN 109819242 A CN109819242 A CN 109819242A CN 201910020545 A CN201910020545 A CN 201910020545A CN 109819242 A CN109819242 A CN 109819242A
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Abstract
The invention discloses a kind of flare test methods, comprising: step 1: camera to be measured shooting array light source, obtains dot matrix light image；Step 2: in the dot matrix light image of acquisition, calculating the farthest bright spot distance value of each bright area.The flare test method can carry out flare test to camera to be measured, to screen qualified product, carry out quality control.Invention additionally discloses a kind of flare test macro and readable storage medium storing program for executing.
Description
Technical field
The present invention relates to field of photography more particularly to a kind of flare test methods, system and readable storage medium storing program for executing.
Background technique
In photographic light sources or strong light object, edge will appear some halation, shadow or to external radiation camera to be measured
Solar flare, these are referred to as flare.Flare can seriously affect the quality of image, it is therefore desirable to before factory, it is necessary to treat
The flare for surveying camera is tested, and to screen qualified product, carries out quality control.
Summary of the invention
In order to solve above-mentioned the deficiencies in the prior art, the present invention provides a kind of flare test method, can be to camera to be measured
Flare tested, to screen qualified product, carry out quality control.
The present invention also provides a kind of flare test macro and readable storage medium storing program for executing.
The technical problems to be solved by the invention are achieved by the following technical programs:
A kind of flare test method, comprising:
Step 1: camera to be measured shooting array light source, obtains dot matrix light image；
Step 2: in the dot matrix light image of acquisition, calculating the farthest bright spot distance value of each bright area.
Further, step 2 includes:
Step 2.1: in the dot matrix light image of acquisition, calculating the neighborhood contrast of each pixel；
Step 2.2: according to the neighborhood contrast of each pixel, binaryzation being carried out to each pixel, obtains binary image；
Step 2.3: in the binary image of acquisition, the farthest bright spot distance value of each binaryzation bright area is calculated, as
The maximum centrifugal distance of corresponding bright area.
Further, step 2.1 includes:
Step 2.1.1: choosing comprising the first area including it as its corresponding prospect each pixel, choose comprising its
As its corresponding background, the second area of same pixel includes and is greater than first area interior second area；
Step 2.1.2: calculating the first average brightness value of the first area of each pixel and the second of second area Y2 is averaged
Brightness value；
Step 2.1.3: the neighborhood contrast of each pixel is calculated, wherein (i, j)
For the coordinate of each pixel, Ave_Y1 is pixel (i, j) corresponding first average brightness value, and Ave_Y2 is pixel (i, j) corresponding the
Two average brightness values.
Further, in step 2.2, the neighborhood contrast of each pixel is compared with default contrast, if adjacent
Domain contrast is greater than default contrast, then sets 255 for the brightness value of respective pixel, if neighborhood contrast is less than or equal in advance
If contrast, then 0 is set by the brightness value of respective pixel.
Further, step 2.3 includes:
Step 2.3.1: it in the binary image of acquisition, calculates between each binaryzation bright spot and the mass center of corresponding bright area
Distance value；
Step 2.3.2: in same binaryzation bright area, being compared calculated each distance value, obtain it is maximum away from
Farthest bright spot distance value from value, as corresponding bright area.
Further, before carrying out step 2 further include:
In the dot matrix light image of acquisition, the mass center of each bright area is obtained.
Further, the mass center for obtaining each bright area, includes the following steps:
S1: each bright area is extracted in the dot matrix light image of acquisition according to predetermined luminance threshold value；
S2: it in each bright area extracted, obtains each bright area and corresponds to mass center.
Further, after carrying out step 2, further includes:
Step 3: if any farthest bright spot distance value is greater than pre-determined distance value, judging that the flare test of camera to be measured does not conform to
Lattice.
A kind of flare test macro, comprising:
Array light source obtains dot matrix light image for being shot for camera to be measured；
Computing module, the dot matrix light image for obtaining to camera to be measured are handled, to carry out the above-mentioned test side flare
Step 2 in method.
A kind of readable storage medium storing program for executing, stores the computer program executed for processor, and the computer program is processed
When device executes, the step 2 in above-mentioned flare test method is carried out.
The invention has the following beneficial effects: the flare test methods to carry out camera to be measured to the array light source
It shoots to obtain the dot matrix light image of test, then calculates the farthest bright spot distance of each bright area according to dot matrix light image
Value, the flare performance of camera to be measured is measured with farthest bright spot distance value, flare test is carried out to camera to be measured, with screening
Qualified product carries out quality control.
Detailed description of the invention
Fig. 1 is the step block diagram of test method provided by the invention；
Fig. 2 is the step block diagram of step 2 in test method shown in FIG. 1；
Fig. 3 is the schematic diagram of the dot matrix light image obtained；
Fig. 4 is the schematic diagram of prospect and background when calculating the neighborhood contrast of pixel；
Fig. 5 is the schematic diagram of the binary image obtained；
Fig. 6 is the front schematic view of array light source provided by the invention；
Fig. 7 is the side schematic view of array light source provided by the invention.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawings and examples.
Embodiment one
As shown in Figure 1, a kind of flare test method, comprising:
Step 1: camera to be measured shooting array light source, obtains dot matrix light image；
In the step 1, as shown in Figures 6 and 7, the array light source includes a substrate 11 and is arranged in 11 one side of substrate
Several point light sources 12, several point light sources 12 on the substrate 11 in uniform dot matrix way arrange；The point light source 12 is excellent
It selects but is not limited to LED light.The driving mould for driving each point light source 12 to switch is provided on the another side of the substrate 11
Block 13, the output end of the drive module 13 are electrically connected at the input of each point light source 12 by the circuit of the substrate 11
End.
As shown in figure 3, having several bright areas in the dot matrix light image obtained, several bright areas are in dot matrix light image
Uniform dot matrix way arrangement, a bright area correspond to a point light source on the array light source.
Step 2: in the dot matrix light image of acquisition, calculating the farthest bright spot distance value of each bright area；
In the step 2, the farthest bright spot distance value of each bright area refers to farthest each of the mass center apart from place bright area
The distance between a bright spot and corresponding mass center value.
Therefore, before carrying out step 2 further include:
In the dot matrix light image of acquisition, the mass center of each bright area is obtained.
Wherein, the mass center for obtaining each bright area, includes the following steps:
S1: each bright area is extracted in the dot matrix light image of acquisition according to predetermined luminance threshold value；
In step S1, the size of predetermined luminance threshold value can choose biggish numerical value (this reality by tester's manual setting
Apply predetermined luminance threshold value=200 in example)；In the dot matrix light image of acquisition, the bright spot that brightness value is greater than predetermined luminance threshold value is mentioned
It takes out combination and forms each bright area.
S2: it in each bright area extracted, obtains each bright area and corresponds to mass center；
In step S2, in the dot matrix light image of acquisition, using i axis as horizontal axis, j axis as the longitudinal axis, rectangular co-ordinate is established
It is ij, obtains the coordinate (i, j) of each pixel, then the coordinate value according to each bright spot extracted calculates each bright area
Center-of-mass coordinate.
As shown in Fig. 2, the step 2 specifically includes:
Step 2.1: in the dot matrix light image of acquisition, calculating the neighborhood contrast of each pixel；
Wherein, which includes:
Step 2.1.1: as shown in figure 4, each pixel is chosen comprising the first area Y1 including it as its corresponding prospect,
It chooses comprising the second area Y2 including it as its corresponding background, the second area Y2 of same pixel includes and is greater than first
Region Y1；
In step 2.1.1, the present embodiment chooses first area Y1 of the region of 6*6 pixel formation as each pixel,
Choose second area Y2 of the region of 30*30 pixel formation as each pixel.
Step 2.1.2: the first average brightness value Ave_Y1 and second area of the first area Y1 of each pixel are calculated
The second average brightness value Ave_Y1 of Y2；
In step 2.1.2, the brightness value according to all pixels in the Y1 of first area calculates its first average brightness value
Ave_Y1, the brightness value according to all pixels in second area Y2 calculate its second average brightness value Ave_Y2.
Step 2.1.3: the neighborhood contrast of each pixel is calculated, wherein
(i, j) is the coordinate of each pixel, and Ave_Y1 is pixel (i, j) corresponding first average brightness value, and Ave_Y2 is that pixel (i, j) is right
Answer the second average brightness value.
Step 2.2: according to the neighborhood contrast of each pixel, binaryzation being carried out to each pixel, obtains binary image；
In the step 2.2, the numerical value of default contrast thres is empirically preset (in embodiment by testing staff
Thres=2.2), the neighborhood contrast of each pixel is compared with default contrast thres, if neighborhood contrast is greater than in advance
If contrast thres then sets 255 for the brightness value of respective pixel, if neighborhood contrast is less than or equal to default contrast
Thres then sets 0 for the brightness value of respective pixel.
As shown in figure 5, having several binaryzation bright areas on the binary image obtained, several binaryzation bright areas are two
It is arranged on value image in uniform dot matrix way, a binaryzation bright area corresponds to a clear zone in dot matrix light image
Domain.
Step 2.3: in the binary image of acquisition, the farthest bright spot distance value of each binaryzation bright area is calculated,
Maximum centrifugal distance as corresponding bright area；
In the step 2.3, before calculating farthest bright spot distance value, first remove the discrete bright area in binary image；?
When removing discrete bright area, the binaryzation bright area that 4 connected regions or 8 connected regions are met in binary image is screened
Remove as discrete bright area.
Likewise, the farthest bright spot distance value of each binaryzation bright area refers to distance and place binaryzation bright area
The distance between the farthest each binaryzation bright spot of the mass center of corresponding bright area and corresponding mass center are worth.
Wherein, which includes:
Step 2.3.1: it in the binary image of acquisition, calculates between each binaryzation bright spot and the mass center of corresponding bright area
Distance value；
In step 2.3.1, calculated by the coordinate of each binaryzation bright spot and mass center in rectangular coordinate system ij
The distance between each binaryzation bright spot and corresponding mass center value.
Step 2.3.2: in same binaryzation bright area, being compared calculated each distance value, obtains maximum
Distance value, the farthest bright spot distance value as corresponding bright area.
In addition, after carrying out step 2, further includes:
Step 3: if any farthest bright spot distance value is greater than pre-determined distance value, judging that the flare test of camera to be measured does not conform to
Lattice；
In the step 3, pre-determined distance value (the present embodiment uses 140 pixels) is needed according to each on the array light source
The shooting distance of the light emitting region size of point light source and camera to be measured determines.
The flare test method shoots camera to be measured to the array light source to obtain the array light of test
Image, then calculate the farthest bright spot distance value of each bright area according to dot matrix light image, with farthest bright spot distance value measure to
The flare performance for surveying camera carries out flare test to camera to be measured, to screen qualified product, carries out quality control.
Embodiment two
A kind of flare test macro, comprising:
Array light source obtains dot matrix light image for being shot for camera to be measured；
Computing module, the dot matrix light image for obtaining to camera to be measured are handled, to carry out described in embodiment one
Step 2 in flare test method.
Embodiment three
A kind of readable storage medium storing program for executing, stores the computer program executed for processor, which is held by processor
When row, the step 2 in flare test method described in embodiment one is carried out.
Embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but can not
Therefore limitations on the scope of the patent of the present invention are interpreted as, as long as skill obtained in the form of equivalent substitutions or equivalent transformations
Art scheme should all be fallen within the scope and spirit of the invention.
Claims (10)
1. a kind of flare test method characterized by comprising
Step 1: camera to be measured shooting array light source, obtains dot matrix light image；
Step 2: in the dot matrix light image of acquisition, calculating the farthest bright spot distance value of each bright area.
2. flare test method according to claim 1, which is characterized in that step 2 includes:
Step 2.1: in the dot matrix light image of acquisition, calculating the neighborhood contrast of each pixel；
Step 2.2: according to the neighborhood contrast of each pixel, binaryzation being carried out to each pixel, obtains binary image；
Step 2.3: in the binary image of acquisition, the farthest bright spot distance value of each binaryzation bright area is calculated, as
The maximum centrifugal distance of corresponding bright area.
3. flare test method according to claim 2, which is characterized in that step 2.1 includes:
Step 2.1.1: choosing comprising the first area including it as its corresponding prospect each pixel, choose comprising its
As its corresponding background, the second area of same pixel includes and is greater than first area interior second area；
Step 2.1.2: calculate the first area of each pixel the first average brightness value and second area it is second average bright
Angle value；
Step 2.1.3: the neighborhood contrast of each pixel is calculated, wherein (i, j)
For the coordinate of each pixel, Ave_Y1 is pixel (i, j) corresponding first average brightness value, and Ave_Y2 is pixel (i, j) corresponding the
Two average brightness values.
4. flare test method according to claim 2, which is characterized in that in step 2.2, by the neighbour of each pixel
Domain contrast is compared with default contrast, if neighborhood contrast is greater than default contrast, by the brightness value of respective pixel
255 are set as, if neighborhood contrast is less than or equal to default contrast, sets 0 for the brightness value of respective pixel.
5. flare test method according to claim 2, which is characterized in that step 2.3 includes:
Step 2.3.1: it in the binary image of acquisition, calculates between each binaryzation bright spot and the mass center of corresponding bright area
Distance value；
Step 2.3.2: in same binaryzation bright area, being compared calculated each distance value, obtain it is maximum away from
Farthest bright spot distance value from value, as corresponding bright area.
6. any flare test method in -5 according to claim 1, which is characterized in that also wrapped before carrying out step 2
It includes:
In the dot matrix light image of acquisition, the mass center of each bright area is obtained.
7. flare test method according to claim 6, which is characterized in that obtain the mass center of each bright area, including such as
Lower step:
S1: each bright area is extracted in the dot matrix light image of acquisition according to predetermined luminance threshold value；
S2: it in each bright area extracted, obtains each bright area and corresponds to mass center.
8. any flare test method in -5 according to claim 1, which is characterized in that after carrying out step 2, and also
Include:
Step 3: if any farthest bright spot distance value is greater than pre-determined distance value, judging that the flare test of camera to be measured does not conform to
Lattice.
9. a kind of flare test macro characterized by comprising
Array light source obtains dot matrix light image for being shot for camera to be measured；
Computing module, the dot matrix light image for obtaining to camera to be measured are handled, any in claim 1-8 to carry out
Step 2 in the flare test method.
10. a kind of readable storage medium storing program for executing stores the computer program executed for processor, which is characterized in that the computer
When program is executed by processor, the step 2 in flare test method described in any one of claims 1-8 is carried out.
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| CN201910020545.1A CN109819242B (en) | 2019-01-09 | 2019-01-09 | Flare testing method and system and readable storage medium |
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| CN201910020545.1A CN109819242B (en) | 2019-01-09 | 2019-01-09 | Flare testing method and system and readable storage medium |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111951322A (en) * | 2020-07-16 | 2020-11-17 | 昆山丘钛光电科技有限公司 | Camera module quality detection method and device and computer storage medium |
| CN111988604A (en) * | 2020-08-19 | 2020-11-24 | 威海世高光电子有限公司 | Flare automatic checking system |
| CN113473110A (en) * | 2021-03-25 | 2021-10-01 | 广州得尔塔影像技术有限公司 | Lens detection method and device and terminal equipment |
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| CN111951322A (en) * | 2020-07-16 | 2020-11-17 | 昆山丘钛光电科技有限公司 | Camera module quality detection method and device and computer storage medium |
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| CN113473110A (en) * | 2021-03-25 | 2021-10-01 | 广州得尔塔影像技术有限公司 | Lens detection method and device and terminal equipment |
| CN113473110B (en) * | 2021-03-25 | 2024-04-16 | 广州得尔塔影像技术有限公司 | Lens detection method and device and terminal equipment |
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Inventor after: Lin Ting Inventor after: Li Shanmeng Inventor after: Liu Xing Inventor after: Zheng Huaixi Inventor after: Shi Shijie Inventor after: Fan Jie Inventor after: Zheng Ruijian Inventor before: Lin Ting |
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