CN106572346B - 360 degree of monoscopic video data correcting methods of one kind and correction system - Google Patents
360 degree of monoscopic video data correcting methods of one kind and correction system Download PDFInfo
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Abstract
The invention discloses a kind of 360 degree of monoscopic video data correcting methods and correction systems, black and white correction is carried out first, obtain light sources project image and standard projection image circle, then judge whether light source center point and center sensor point are overlapped, it is accordingly corrected if not being overlapped, to obtain video data circle, edge determination step finally is carried out to video data circle, determine it is qualified after output data information, and according to H.264 carrying out Video coding.The present invention can effectively solve the problems, such as that central point deviation leads to the video of output not exclusively or video is not placed in the middle.
Description
Technical field
The present invention relates to technical field of image processing, more particularly to a kind of 360 degree of monoscopic video data correcting methods and
Correction system.
Background technique
With the development of the society, people are higher and higher to the quality requirement of camera shooting, however in camera batch production, camera lens
The assembling of mould group is it is difficult to ensure that the physical centre of light source center and sensor is completely coincident, it may appear that certain deviation, lens module
The video quality of final output also will receive influence, and video shows the problems such as incomplete or video is not placed in the middle out, influence people's sight
It sees.The measure being usually taken at present is to reduce video effectively to intercept area, and to obtain video placed in the middle, however the way is but held
Easily lead to video pictures show it is imperfect.
Summary of the invention
The technical problems to be solved by the present invention are: providing 360 degree of monoscopic video data correcting methods of one kind and correction
System.
In order to solve the above-mentioned technical problem, a kind of the technical solution adopted by the present invention are as follows: 360 degree of monoscopic video data schools
Correction method includes the following steps:
S1: judging the underlapped area ratio of light sources project image and standard projection image circle, if being less than preset value,
Step S2 is then carried out, if it is greater than or equal to preset value, then prompts error message；
S2: using center sensor point as the center of circle, the intersection point of light sources project image and standard projection image circle is into sensor
The distance of the heart is that radius does circle, obtains video data circle.
Further, before the step S1 further include:
S11: judging whether center sensor point is overlapped with light source center point, if so, carrying out step S1；If it is not, then carrying out
Step S12；
S12: the standard white of vector shift is measured according to the coordinate shift of center sensor point to the light source center point
The standard projection image circle of vector shift is calculated in projection image's matrix array.
Further, further include following steps before the step S11:
S111: carrying out white correction, obtains white image matrix array and light source center point；
S112: carrying out black correction, obtains shadow as matrix array；
S113: by shadow as the corresponding numerical value of matrix array and the progress operation of white image matrix array, light sources project is obtained
Image；By shadow as the corresponding numerical value of matrix array and the progress operation of standard white image matrix array, standard projection image is obtained
Circle.
Further, after the step S2 further include:
S21: the boundary of video data circle is judged, if carrying out step S22 in the effective pixel area of sensor entirely；If
Error message is not prompted then in the effective pixel area of sensor entirely；
S22: output OK information, and the data of video data circle are output to DSP video processing unit, recording light source center
Point.
Further, H.264 the DSP video processing unit according to carrying out Video coding.
A kind of 360 degree of monoscopic video data correction systems, comprising:
Judgment module, for judging the underlapped area ratio of light sources project image and standard projection image circle；
Selecting module selects next carry out step according to the judging result of judgment module；
Video data obtains module, for obtaining video data circle；
Nformation alert module, for prompting error message or output OK information.
Further, the judgment module is also used to judge whether center sensor point is overlapped with light source center point.
Further, the judgment module be also used to determine video data circle whether sensor effective pixel area it
It is interior.
It further, further include vector shift module, the vector shift module is used to be calculated the mark of vector shift
Quasi- projection image's circle.
The beneficial effects of the present invention are: underlapped part is justified by comparison light sources project area and standard projection image
Whether area ratio is qualified to determine camera lens assembly, and is corrected to obtain video data circle to light sources project image, can be with
It solves to lead to problems such as video show that incomplete or video is not placed in the middle due to central point deviation.
Detailed description of the invention
Fig. 1 is black and white correcting process schematic diagram；
Fig. 2 is white correction result schematic diagram；
Fig. 3 is Matrix List schematic diagram；
Fig. 4 is black correction result schematic diagram；
Fig. 5 is that light sources project image circle or standard projection image circle obtain schematic diagram；
Fig. 6 is that the check and correction of center sensor point and light source center point and video data circle obtain flow diagram；
Fig. 7 is that light sources project area and standard projection image area of a circle difference are more than or equal to preset value schematic diagram；
Fig. 8 is that light sources project area and standard projection image area of a circle difference are less than preset value schematic diagram；
Fig. 9 is that standard projection image circle deviates certain schematic vector diagram；
Figure 10 is video data circle not entirely in effective pixel area schematic diagram；
Figure 11 is correction system block diagram；
Label declaration:
1, standard projection image circle；2, light sources project image；3, video data circle；4, effective pixel area.
Specific embodiment
To explain the technical content, the achieved purpose and the effect of the present invention in detail, below in conjunction with embodiment and cooperate attached
Figure is explained.
The most critical design of the present invention is: passing through comparison light sources project area and the underlapped part of standard projection image circle
Area ratio determine whether camera lens assembly qualified, and light sources project image is corrected to obtain video data circle, can be with
It solves to lead to problems such as video show that incomplete or video is not placed in the middle due to central point deviation.
Fig. 1 to Figure 11 is please referred to, a kind of 360 degree of monoscopic video data correcting methods include the following steps:
S1: judging the underlapped area ratio of light sources project image and standard projection image circle, if being less than preset value,
Step S2 is then carried out, if it is greater than or equal to preset value, then prompts error message；
S2: using center sensor point as the center of circle, the intersection point of light sources project image and standard projection image circle is into sensor
The distance of the heart is that radius does circle, obtains video data circle.
As can be seen from the above description, the beneficial effects of the present invention are: pass through comparison light sources project area and standard projection shadow
As the difference in areas of circle determines whether camera lens assembly is qualified, is corrected to obtain video data to light sources project image if qualified
Circle, error message is prompted if unqualified and resets camera lens, and corrected video data circle can solve due to central point deviation
Video is led to problems such as to show that incomplete or video is not placed in the middle.
Further, before the step S1 further include:
S11: judging whether center sensor point is overlapped with light source center point, if so, carrying out step S1；If it is not, then carrying out
Step S12；
S12: the standard white of vector shift is measured according to the coordinate shift of center sensor point to the light source center point
The standard projection image circle of vector shift is calculated in projection image's matrix array.
Seen from the above description, determine whether center sensor point and light source center point are overlapped first, carried out again if being overlapped
Area compares, if not being overlapped, carries out area comparison again after standard projection image circle is deviated certain vector.
Further, further include following steps before the step S11:
S111: carrying out white correction, obtains white image matrix array and light source center point；
S112: carrying out black correction, obtains shadow as matrix array；
S113: by shadow as the corresponding numerical value of matrix array and the progress operation of white image matrix array, light sources project is obtained
Image circle；By shadow as the corresponding numerical value of matrix array and the progress operation of standard white image matrix array, standard projection shadow is obtained
As circle.
Seen from the above description, the purpose for carrying out the white correction of camera lens is to obtain white image matrix array and light source center point,
The purpose for carrying out the black correction of sensor is to generate shadow as matrix array, obtains projection image's circle after then carrying out certain operation
With standard projection image circle.
Further, after the step S2 further include:
S21: the boundary of video data circle is judged, if carrying out step S22 in the effective pixel area of sensor entirely；If
Error message is not prompted then in the effective pixel area of sensor entirely；
S22: output OK information, and the data of video data circle are output to DSP video processing unit, recording light source center
Point.
Seen from the above description, the judgement on boundary is carried out to the video data circle after correction, video data circle must exist entirely
Within the scope of the valid pixel of sensor.
Further, H.264 the DSP video processing unit according to carrying out Video coding.
A kind of 360 degree of monoscopic video data correction systems, comprising:
Judgment module, for judging the underlapped area ratio of light sources project image and standard projection image circle；
Selecting module selects next carry out step according to the judging result of judgment module；
Video data obtains module, for obtaining video data circle；
Nformation alert module, for prompting error message or output OK information.
Further, the judgment module is also used to judge whether center sensor point is overlapped with light source center point.
Further, the judgment module be also used to determine video data circle whether sensor effective pixel area it
It is interior.
It further, further include vector shift module, the vector shift module is used to be calculated the mark of vector shift
Quasi- projection image's circle.
Embodiment one
Please refer to Fig. 1 to Figure 10, the embodiment of the present invention one are as follows: a kind of 360 degree of monoscopic video data correcting methods, packet
Include: black and white correction, central point correction obtain video data circle and video data circle edge determination.
As shown in Figure 1, being to carry out black and white correction, and obtain light sources project image circle and standard projection shadow by operation first
As circle.
The method of white correction is: opening the light-source box of D65, camera lens is buckled on D65 light-source box, make the light of light-source box logical
It crosses camera lens to reach on sensor, then obtains out the image matrix array of sensor, i.e., white image matrix array, as shown in Fig. 2,
White image matrix array is exactly the data of intermediate circle mapping, round central part brightness highest, is all black around circle.Its
The reason is that because camera lens ametropia characteristic, under uniform D65 light source, the brightness at center be it is highest, more arrive edge, it is bright
Degree is lower, so certainly existing bright maximum value in white image matrix array, it is assumed that camera lens installs no deviation, then camera lens is thrown
The center of light source center point and sensor on shadow to sensor is same point, and this central point is also brightness maximum point.This
In embodiment, it is assumed that the pixel of sensor is 500 mega pixels, then just having 500,000,000 photosensitive small crystals on sensor, often
A photosensitive small crystals all corresponds a register, and each photosensitive small crystals indicates a pixel, and software can obtain sensor
Effective pixel points, and form Matrix List, the effective pixel points arrangement of the Matrix List and sensor is consistent, and is passed through
Reading order, software can get each effective pixel points of sensor and correspond to the value of register, and be saved in matrix array, rectangular array
Table can be as shown in Figure 3.
The method of black correction is: not allowing light to be mapped on sensor by camera lens, so that not having on the photosurface of sensor
Light and image, as shown in figure 4, then obtaining the image matrix array of sensor at this time, as shadow is as matrix array.Such as figure
Shown in 5, by shadow as the numerical value of matrix array mapping and the progress operation of white image matrix array, light sources project image is just obtained
Circle just obtains standard projection image by shadow as numerical value and standard white image matrix array the progress operation of matrix array mapping
Circle.In the present embodiment, standard white image matrix array is repeatedly practised and is obtained in design and making technology according to image principle
Parameter matrix array.
Correcting process is put centered on as shown in fig. 6, and video data circle is obtained by correction.
It first determines whether light source center point and center sensor point are overlapped, if being overlapped, calculates light sources project image
Area, and the underlapped area of the area of light sources project image and standard projection image circle is compared, judges two
Whether the underlapped area ratio of person is more than or equal to preset value, as shown in fig. 7, assume that preset value is 5% in the present embodiment,
I.e. when light sources project image 2 and standard projection image circle 1 underlapped area ratio >=5%, software can issue wrong letter
Breath prompt, demonstrates the need for re-assemblying camera lens；As shown in figure 8, if light sources project imagery coverage does not weigh with standard projection image circle
The area ratio < 5% of folded part, then using center sensor point as the center of circle, light sources project image circle/oval and standard projection shadow
As the distance of intersection point to the center sensor point of circle is that radius makees circle to get to video data circle 3, due to center sensor point and
Light source center point is not overlapped, so light sources project image may be an ellipse, rather than a standard round.
If light source center point and center sensor point are not overlapped, then first will be in the coordinate and sensor of light source center point
The coordinate of heart point is subtracted each other to obtain a coordinate vector offset, assume in the present embodiment light source center coordinate be (1/2W',
1/2H'), center sensor point coordinate is (1/2W, 1/2H), then coordinate vector offset is (1/2 (W'-W), 1/2 (H'-
H)), according to vector shift amount, each data of standard white image matrix array and vector shift amount are done into subtraction, to make
The central point for obtaining standard white image matrix array is overlapped with light source center point, then obtains the standard projection image of vector shift
Then circle compares light sources project area and standard projection as shown in figure 9, the central point of standard projection image circle moves on to O ' from O again
The area ratio of the underlapped part of image circle issues error message prompt, shows if underlapped area ratio >=5%
It needs to re-assembly camera lens, if underlapped area ratio < 5%, with O ' for the center of circle, light sources project image center and mark
The distance of intersection point to the O ' of quasi- projection image's circle are that radius makees circle to get video data circle is arrived.
After obtaining video data circle, the edge determination of Yao Jinhang video data circle, as shown in Figure 10, if video data circle
Part is located at except effective pixel area 4, then can issue error message prompt, and video data circle must fully fall in valid pixel
OK information can be just exported within region 4, then the data of video data circle are output to DSP video processing unit, and also will
Light source center point is recorded, finally to video data circle data according to H.264 carrying out Video coding.
Embodiment two
Figure 11 is please referred to, the embodiment of the present invention two is corresponding with the bearing calibration of embodiment one, the embodiment of the present invention two
Are as follows: a kind of 360 degree of monoscopic video data correction systems, including judgment module, selecting module, video data obtain module, letter
Cease cue module and vector shift module.The judgment module is for judging light sources project image and standard projection image circle not
Lap area ratio, judges whether center sensor point is overlapped with light source center point, and whether determines video data circle
Within the effective pixel area of sensor, the selecting module is walked according to the selection of the judging result of judgment module is next
Suddenly, the video data obtains module for obtaining video data circle, the nformation alert module for prompt error message or
OK information is exported, the vector shift module is used to be calculated the standard projection image circle of vector shift.
In the present embodiment, when judgment module judges light source center point and center sensor point is overlapped, if underlapped portion
Area ratio is divided to be more than or equal to preset value, selecting module can be issued to nformation alert module and be ordered, nformation alert module prompt mistake
False information, if the judging result of judgment module is that underlapped area ratio is less than preset value, selecting module is to video counts
Order is issued according to module is obtained, video data obtains module using center sensor point as the center of circle, and light sources project image is round or ellipse
It is round to do circle at a distance from the intersection point to center sensor of standard projection image circle for radius, obtain video data circle.
When judgment module judges light source center point and center sensor point is not overlapped, vector shift module can be according to institute
The coordinate shift for stating center sensor point to light source center point measures the standard white projection image matrix array of vector shift, so
The standard projection image circle of vector shift is calculated again afterwards, then system judges light sources project image and standard projection image again
Round underlapped area ratio and progress subsequent step.
After obtaining video data circle, judgment module also carries out edge determination, i.e., whether judgement video data circle is sensing
Within the effective pixel area of device, if all in effective pixel area, then nformation alert module exports OK information, if not having
It is complete complete in effective pixel area, then nformation alert module prompts error message.
In conclusion a kind of 360 degree of monoscopic video data correcting methods provided by the invention and correction system, first into
The correction of row black and white obtains light sources project image circle and standard projection image circle, then judges whether the two central point is overlapped, and is overlapped
The round area discrepancy with the underlapped part of standard projection image circle of light sources project image is then determined, if underlapped area ratio
More than or equal to preset value, then error message is prompted, with center sensor point if underlapped area ratio is less than preset value
For the center of circle, light sources project image circle/ellipse is made at a distance from the intersection point to center sensor point of standard projection image circle for radius
Circle is to get round to video data；If the two central point is not overlapped, carry out certain vector shift so that light source center point and
The central point of standard projection image circle is overlapped, and then carries out underlapped area ratio comparison step again.Obtain video data
After circle, Yao Jinhang edge determination step, i.e., whether judgement video data circle is within the effective pixel area of sensor, if not
Completely in effective pixel area, then error message is prompted, if completely in effective pixel area, the data quilt of video data circle
It is output to DSP video processing unit, finally to video data circle data according to H.264 carrying out Video coding.The correction system
Module, nformation alert module and vector shift module are obtained including judgment module, selecting module, video data.The judgement mould
Block be used for judge light sources project image and standard projection image circle underlapped area ratio, judge center sensor point and
Whether light source center point is overlapped, and determines that video data is round whether within the effective pixel area of sensor, the selection
Module selects next carry out step according to the judging result of judgment module, and the video data obtains module for obtaining video
Data circle, the nformation alert module is for prompting error message or output OK information, and the vector shift module is for calculating
Obtain the standard projection image circle of vector shift.360 degree of monoscopic video data correcting methods of the present invention and correction system
System can effectively solve the problems, such as that central point deviation leads to the video of output not exclusively or video is not placed in the middle.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalents made by bright specification and accompanying drawing content are applied directly or indirectly in relevant technical field, similarly include
In scope of patent protection of the invention.
Claims (7)
1. a kind of 360 degree of monoscopic video data correcting methods, which comprises the steps of:
S1: judging the underlapped area ratio of light sources project image and standard projection image circle, if being less than preset value, into
Row step S2 then prompts error message if it is greater than or equal to preset value；
S2: using center sensor point as the center of circle, the light sources project image intersection point round with standard projection image to center sensor
Distance is that radius does circle, obtains video data circle；
Before the step S1 further include:
S11: judging whether center sensor point is overlapped with light source center point, if so, carrying out step S1；If it is not, then carrying out step
S12；
S12: it is projected according to the standard white that the coordinate shift of center sensor point to the light source center point measures vector shift
The standard projection image circle of vector shift is calculated in image matrix array；
Further include following steps before the step S11:
S111: carrying out white correction, obtains white image matrix array and light source center point；
S112: carrying out black correction, obtains shadow as matrix array；
S113: by shadow as the corresponding numerical value of matrix array and the progress operation of white image matrix array, light sources project image is obtained；
By shadow as the corresponding numerical value of matrix array and the progress operation of standard white image matrix array, standard projection image circle is obtained.
2. 360 degree of monoscopic video data correcting methods according to claim 1, which is characterized in that the step S2 it
Afterwards further include:
S21: the boundary of video data circle is judged, if carrying out step S22 in the effective pixel area of sensor entirely；If incomplete
In the effective pixel area of sensor, then error message is prompted；
S22: output OK information, and the data of video data circle are output to DSP video processing unit, recording light source central point.
3. 360 degree of monoscopic video data correcting methods according to claim 2, which is characterized in that at the DSP video
H.264, reason unit is according to carrying out Video coding.
4. a kind of 360 degree of monoscopic video data correction systems characterized by comprising
Judgment module, for judging the underlapped area ratio of light sources project image and standard projection image circle；
Selecting module selects next carry out step according to the judging result of judgment module, specifically includes: if the underlapped portion
Divide area ratio to be less than preset value, then obtains video data circle；If it is greater than or equal to preset value, then error message is prompted；
Video data obtains module, for obtaining video data circle；
Nformation alert module, for prompting error message or output OK information；
The standard projection image circle obtains as follows:
White correction is carried out, white image matrix array and light source center point are obtained；
Black correction is carried out, obtains shadow as matrix array；
By shadow as the corresponding numerical value of matrix array and the progress operation of white image matrix array, light sources project image is obtained；It will be black
The corresponding numerical value of image matrix array and standard white image matrix array carry out operation, obtain standard projection image circle；
The video data circle obtains as follows:
Using center sensor point as the center of circle, light sources project image is at a distance from the intersection point to center sensor of standard projection image circle
Justify for radius work, obtains video data circle.
5. 360 degree of monoscopic video data correction systems according to claim 4, which is characterized in that the judgment module
It is also used to judge whether center sensor point is overlapped with light source center point.
6. 360 degree of monoscopic video data correction systems according to claim 4 or 5, which is characterized in that the judgement mould
Whether block is also used to determine video data circle within the effective pixel area of sensor.
7. 360 degree of monoscopic video data correction systems according to claim 4 or 5, which is characterized in that further include vector
Offset module, the vector shift module are used to be calculated the standard projection image circle of vector shift.
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| KR20090129080A (en) * | 2008-06-12 | 2009-12-16 | 넥스타테크놀로지 주식회사 | Apparatus and method for aligning optic axis of lens module |
| CN103679166A (en) * | 2013-11-22 | 2014-03-26 | 江西好帮手电子科技有限公司 | Method and system for quickly acquiring center offset of fisheye lens in equipment |
| CN105451017A (en) * | 2015-12-29 | 2016-03-30 | 努比亚技术有限公司 | Camera module photosensitive quality detection method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101043585A (en) * | 2006-03-21 | 2007-09-26 | 明基电通股份有限公司 | Method for correcting image capture center to light axis center of lens module |
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| KR20090129080A (en) * | 2008-06-12 | 2009-12-16 | 넥스타테크놀로지 주식회사 | Apparatus and method for aligning optic axis of lens module |
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