CN103824289B - Based on the array image method for registering of template in a kind of snapshot light spectrum image-forming - Google Patents
Based on the array image method for registering of template in a kind of snapshot light spectrum image-forming Download PDFInfo
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- CN103824289B CN103824289B CN201410052688.8A CN201410052688A CN103824289B CN 103824289 B CN103824289 B CN 103824289B CN 201410052688 A CN201410052688 A CN 201410052688A CN 103824289 B CN103824289 B CN 103824289B
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Abstract
In snapshot light spectrum image-forming, array image method for registering based on template belongs to a light spectrum image-forming technical field, is specifically related to a kind of image rapid registering method; The method taking lens arra be the imaging system of core to predetermined template imaging, extract the template subgraph that each sub-lens is corresponding; Using template subgraph that to be in the sub-lens of lenslet array center corresponding as with reference to figure, demarcating other all template subgraph, obtain and demarcate data; All template subgraphs are done affined transformation relative to reference drawing, using the registration parameter matrix of affine transformation parameter as system; It is that target is carried out imaging by the imaging system of core taking lens arra, extracts the target subgraph that each sub-lens that CCD gathers is corresponding; Utilize registration parameter matrix to be converted one to one by target subgraph, obtain the target subgraph after registration; The target subgraph after registration is utilized to calculate target optical spectral data cube; The present invention is possible not only to improve registration speed, and can improve registration precision.
Description
Technical field
In snapshot light spectrum image-forming, array image method for registering based on template belongs to a light spectrum image-forming technical field, is specifically related to a kind of image rapid registering method.
Background technology
Interference imaging is one of important means obtaining target optical spectrum. By introducing, lens arra makes interference imaging the form of obstructed overscanning just can directly obtain the 3-D data set of target to fast illuminated inteference imaging spectrometer, reduces acquisition time greatly.
In fast illuminated inteference imaging spectrometer, the image gathered by lens arra is due to lens production process existing defects, the reasons such as imaging optical path is uneven, the subgraph array obtained more or less also exists some skews, the subgraph shining into different zones by reasons such as camera lens spherical aberrations produces the displacement of some equivalences, deflection, distortion etc., this makes when extracting the interferogram of corresponding points in subgraph, owing to the pixel of coordinate same in each subgraph might not the same point of corresponding object, just there is deviation in the interferogram extracted like this, the precision of spectrograph can be reduced significantly.
Can so that the point of target of some correspondence of the same coordinate of each subgraph be as far as possible near even overlapping by effective registration means, the interferogram precision of each point put forward like this will improve greatly. But traditional registration means are by relative to subgraph registration between two, not only calculated amount is very big, and registration is long for operation time, limits the registration speed of image; And for different images, due to the diversity of specifying information so that precision is difficult to improve.
Summary of the invention
In order to improve image registration speed, a kind of array image method for registering based on template of inventive design, this method for registering is possible not only to improve registration speed, and can improve registration precision.
The object of the present invention is achieved like this:
Based on an array image method for registering for template in snapshot light spectrum image-forming, comprise the following steps:
Predetermined template is carried out imaging by a, the imaging system taking lens arra as core, extracts the template subgraph that each sub-lens that CCD gathers is corresponding;
B, using template subgraph that to be in the sub-lens of lenslet array center corresponding as with reference to figure, demarcating other all template subgraph except reference drawing, obtain and demarcate data;
C, the demarcation data obtained according to step b, do affined transformation by all template subgraphs relative to reference drawing, using the registration parameter matrix of affine transformation parameter as system;
Target is carried out imaging by d, the imaging system taking lens arra as core, extracts the target subgraph that each sub-lens that CCD gathers is corresponding;
The target subgraph that steps d is obtained by e, the registration parameter matrix utilizing step c to obtain converts one to one, obtains the target subgraph after registration;
F, utilize registration that step e obtains after target subgraph calculate target optical spectral data cube.
Based on the array image method for registering of template in above-mentioned snapshot light spectrum image-forming, the predetermined template described in step a, have at the bottom of fast black base, white mesh lines and for encode �� 45 �� and �� 135 �� of oblique line sections.
Based on the array image method for registering of template in above-mentioned snapshot light spectrum image-forming, the demarcation data described in step b are the position data of the feature grid point after the predetermined templates encode described in step a, other net point and mesh lines.
Based on the array image method for registering of template in above-mentioned snapshot light spectrum image-forming, the registration parameter matrix described in step c repeats to call.
Based on the array image method for registering of template in above-mentioned snapshot light spectrum image-forming, step c is specially: the demarcation data obtained according to step b, net point in all template subgraphs is done affined transformation relative to the net point of reference drawing, the registration parameter matrix of data as system will be converted.
Based on the array image method for registering of template in above-mentioned snapshot light spectrum image-forming, the rule converted one to one described in step e is, the template subgraph of one of them sub-lens imaging in lens arra acts on the target subgraph of this sub-lens imaging relative to the affine transformation parameter of reference drawing.
Useful effect:
1, registration template can according to different applicable cases particular design, by first to template, target is carried out registration by non-immediate, and in advance the registration parameter matrix of template is stored, and directly the target image gathered is out of shape with this parameter matrix, greatly reduce the time of registration, exempt from the loaded down with trivial details registration process to complicated target simultaneously.
2, have employed template registration simultaneously, obtain registration parameter more convenient and more accurate, it is possible to the effective precision improving registration.
Accompanying drawing explanation
Fig. 1 is array image method for registering schema based on template in snapshot light spectrum image-forming of the present invention.
Fig. 2 is predetermined template schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the invention is described in further detail.
Based on the array image method for registering of template in the snapshot light spectrum image-forming of the present embodiment, as shown in Figure 1, the method comprises the following steps schema:
Predetermined template is carried out imaging by a, the imaging system taking lens arra as core, extracts the template subgraph that each sub-lens that CCD gathers is corresponding;
Described predetermined template, have at the bottom of fast black base, white mesh lines and for encode �� 45 �� and �� 135 �� of oblique line sections, the schematic diagram of predetermined template is as shown in Figure 2;
B, using template subgraph that to be in the sub-lens of lenslet array center corresponding as with reference to figure, demarcating other all template subgraph except reference drawing, obtain and demarcate data;
Described demarcation data are the position data of the feature grid point after the predetermined templates encode described in step a, other net point and mesh lines;
C, the demarcation data obtained according to step b, do affined transformation by all template subgraphs relative to reference drawing, using the registration parameter matrix of affine transformation parameter as system;
Described registration parameter matrix can repeat to call;
Step c is specially: the demarcation data obtained according to step b, and relative to the net point of reference drawing, the net point in all template subgraphs is done affined transformation, will convert the registration parameter matrix of data as system;
Target is carried out imaging by d, the imaging system taking lens arra as core, extracts the target subgraph that each sub-lens that CCD gathers is corresponding;
The target subgraph that steps d is obtained by e, the registration parameter matrix utilizing step c to obtain converts one to one, obtains the target subgraph after registration;
The described rule converted one to one is, the template subgraph of one of them sub-lens imaging in lens arra acts on the target subgraph of this sub-lens imaging relative to the affine transformation parameter of reference drawing.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn that the structure change made under the enlightenment of the present invention or method are improved, and every have identical or close technical scheme with the present invention, all falls within protection scope of the present invention.
Claims (6)
1. based on the array image method for registering of template in a snapshot light spectrum image-forming, it is characterised in that, comprise the following steps:
Predetermined template is carried out imaging by a, the imaging system taking lens arra as core, extracts the template subgraph that each sub-lens that CCD gathers is corresponding;
B, using template subgraph that to be in the sub-lens of lenslet array center corresponding as with reference to figure, demarcating other all template subgraph except reference drawing, obtain and demarcate data;
C, the demarcation data obtained according to step b, do affined transformation by all template subgraphs relative to reference drawing, using the registration parameter matrix of affine transformation parameter as system;
Target is carried out imaging by d, the imaging system taking lens arra as core, extracts the target subgraph that each sub-lens that CCD gathers is corresponding;
The target subgraph that steps d is obtained by e, the registration parameter matrix utilizing step c to obtain converts one to one, obtains the target subgraph after registration;
F, utilize registration that step e obtains after target subgraph calculate target optical spectral data cube.
2. based on the array image method for registering of template in snapshot light spectrum image-forming according to claim 1, it is characterised in that, the predetermined template described in step a, have at the bottom of fast black base, white mesh lines and for encode �� 45 �� and �� 135 �� of oblique line sections.
3. based on the array image method for registering of template in snapshot light spectrum image-forming according to claim 1, it is characterized in that, the demarcation data described in step b are the position data of the feature grid point after the predetermined templates encode described in step a, other net point and mesh lines.
4. based on the array image method for registering of template in snapshot light spectrum image-forming according to claim 1, it is characterised in that, the registration parameter matrix described in step c repeats to call.
5. based on the array image method for registering of template in snapshot light spectrum image-forming according to claim 1, it is characterized in that, step c is specially: the demarcation data obtained according to step b, net point in all template subgraphs is done affined transformation relative to the net point of reference drawing, the registration parameter matrix of data as system will be converted.
6. based on the array image method for registering of template in snapshot light spectrum image-forming according to claim 1, it is characterized in that, the rule converted one to one described in step e is, the template subgraph of one of them sub-lens imaging in lens arra acts on the target subgraph of this sub-lens imaging relative to the affine transformation parameter of reference drawing.
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| US5168529A (en) * | 1988-08-29 | 1992-12-01 | Rayethon Company | Confirmed boundary pattern matching |
| JPH0683964A (en) * | 1992-08-31 | 1994-03-25 | Takayama:Kk | Picture collation method |
| US6226418B1 (en) * | 1997-11-07 | 2001-05-01 | Washington University | Rapid convolution based large deformation image matching via landmark and volume imagery |
| US7127093B2 (en) * | 2002-09-17 | 2006-10-24 | Siemens Corporate Research, Inc. | Integrated image registration for cardiac magnetic resonance perfusion data |
| CN101609554B (en) * | 2009-07-27 | 2012-06-27 | 浙江工商大学 | Gray-scale template matching method based on gray-scale statistical characteristics |
| CN102004898A (en) * | 2010-11-03 | 2011-04-06 | 天津工业大学 | Target tracking method based on template matching |
| CN102005047B (en) * | 2010-11-15 | 2012-09-26 | 无锡中星微电子有限公司 | Image registration system and method thereof |
| CN102547066B (en) * | 2011-12-12 | 2014-11-19 | 苏州科雷芯电子科技有限公司 | Video image stabilization method based on image registering technology |
| CN102564586B (en) * | 2012-01-09 | 2013-08-07 | 南京邮电大学 | Miniature spectrograph with diffraction hole array structure and high resolution spectrum reconstruction method thereof |
| CN102663732B (en) * | 2012-03-14 | 2015-04-01 | 中国科学院光电研究院 | Relative radiometric calibration method for light field camera |
| CN103218811B (en) * | 2013-03-29 | 2016-03-23 | 中国资源卫星应用中心 | A kind of satellite multispectral image waveband registration method of Corpus--based Method distribution |
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