CN106327424A - Correction device and correction method of infrared and visible image registration parameters - Google Patents
Correction device and correction method of infrared and visible image registration parameters Download PDFInfo
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- G—PHYSICS
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
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- G06T3/14—Transformations for image registration, e.g. adjusting or mapping for alignment of images
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Abstract
The invention provides a correction device of infrared and visible image registration parameters. The positions of an infrared detector and a visible detector are arranged in different angles, on the premise of guaranteeing that optical axes are parallel to each other, an image of a chessboard-shaped correcting target is shot, translation and zooming correction parameters of a visible image are calculated according to the distance between the chessboard-shaped correcting target and the correction device and image ghosting, the obtained parameters can realize adaptive registration of an infrared image and the visible image in an infrared and visible image fusion system, the registration correction of the detectors with different fixed forms can be realized, the registration of targets with different depths of field can be performed, the image data volume is reduced, and the operation speed is accelerated.
Description
Technical field
The invention belongs to image registration field, a kind of infrared and visible light image registration parameter correction device and school
Correction method.
Background technology
Image registration is one of infrared bottleneck with visual image fusion technology, and it can be by visible images and infrared
Image mates effectively, superposition, provides the picture number on room and time with highlights correlations for follow-up fusion treatment
According to, the problem that fusion image is fuzzy, of poor quality, do not meet human eye vision custom can be solved, by various countries' researcher
Pay attention to.
Infrared and visible light image registration belongs to multi-modality image registration, and its method for registering mainly has two classes: based on image
The method in region and method based on characteristics of image.Method for registering based on image-region be typically with a certain region of image or
Person's entire image goes to estimate the transformation parameter on space geometry between image, and common method for registering has associated class method, phase place
Method of correlation, probabilistic type measure method etc..Method for registering based on characteristics of image extract comparative example in image, rotate, translate, illumination etc.
Keep constant feature, make use of the high layer information of image, be suitable for multi-modality images analysis.According to said method, state's internal medicine
The development that the personnel that grind are image registration is made that contribution, and Liu Hongjuan, Guo Baolong have developed Aerial Images registration arrangement, uses S-
SIFT algorithm, solving unmanned plane, to shoot the Aerial Images resolution of acquisition in flight course low, and be vulnerable to illumination and make an uproar
The problem of the interference of sound.Liu Wei light uses phase correlation method, devises a kind of infrared and visual image fusion and registration arrangement,
Obtain accurate registration image.Nie Hongbin proposes image registration algorithm based on likelihood function EM iteration, and this algorithm is to scheme
As edge is as registration point feature, allos image registration is converted into edge point set registration, is modeled by the Gaussian Mixture of point set
Establishing point set registration likelihood function, using this function as object function, affine transformation parameter, as optimized variable, utilizes EM repeatedly
Optimal transformation parametric solution is carried out for optimization method.In iterative process, outside introducing based on probability density adaptive threshold fuzziness
Point rejects mechanism, solves the exterior point interference problem to object function, it is achieved that the accuracy registration of edge point set, utilizes actual measurement
Visible ray and infrared image carried out proof of algorithm, it was demonstrated that the effectiveness of this algorithm.From the point of view of above analysis, infrared and visible
The development primary limitation of light image registration is in theory analysis and algorithm research field, and the research for figure registration system is less,
And image registration function is the part in image processing system mostly, lacks and specially image is registrated or registration parameter school
Positive system, this largely constrains infrared and visual image fusion technology development.
Summary of the invention
Technical problem solved by the invention is to provide a kind of infrared and visible light image registration parameter correction device, if
Put Infrared Detectors and become different angles with the position of visible-light detector, shoot tessellate when guarantee optical axis is parallel to each other simultaneously
The image of testing target, and according to tessellate testing target and the distance of correcting unit and image ghost image, calculate visible images
Pan and Zoom correction parameter, parameters obtained achieves infrared and visual image fusion system mid-infrared image and visible ray figure
The auto-registration of picture；This device can carry out geometric precision correction to different detectors in fixed form can be to the mesh of the different depth of field
Mark registrates, and decreases image data amount, accelerates arithmetic speed.
The technical solution realizing the object of the invention is:
Infrared with visible light image registration parameter correction device, including:
Detection device, including fixed support, firm banking, infrared detection device and visible light detection device, infrared acquisition
Device is arranged on firm banking by fixed support, and infrared detection device and visible light detection device are connected by draw-in groove；
Optical axis correcting unit, for regulating the parallelism of optical axis between infrared detection device and visible light detection device；
Tessellate testing target, is used as the measurement target of detection correction；
Image transmission, for the image transmitting infrared detection device and visible light detection device collects；
Computer, for the image merging infrared detection device and visible light detection device collects；
Wherein, infrared detection device and visible light detection device are connected to computer by image transmission；
Power module, for for detecting device, tessellate testing target and computer power supply.
Further, the infrared and visible light image registration parameter correction device of the present invention, infrared detection device includes surveying
Away from machine, Infrared Detectors, Infrared Detectors sleeve and Infrared Detectors fixed structure, described Infrared Detectors and Infrared Detectors
Fixed structure is fixing to be connected, and Infrared Detectors fixed structure and range finder are arranged on Infrared Detectors sleeve inner, infrared acquisition
Device sleeve periphery is evenly arranged with the Infrared Detectors sleeve fixed card slot of depression, and range finder is arranged under Infrared Detectors sleeve
Side.
Further, the infrared and visible light image registration parameter correction device of the present invention, Infrared Detectors sleeve is peripheral
Every 30 °, an Infrared Detectors sleeve fixed card slot is set.
Further, the infrared and visible light image registration parameter correction device of the present invention, it is seen that light detection device includes
Visible-light detector, visible-light detector sleeve and visible-light detector multidimensional adjustment structure, described visible-light detector with can
See that photo-detector multidimensional adjustment structure is fixing to connect, it is seen that photo-detector multidimensional adjustment structure is arranged on visible-light detector sleeve
Internal, it is seen that photo-detector sleeve periphery is evenly arranged with prominent visible-light detector sleeve fixed card slot.
Further, the infrared and visible light image registration parameter correction device of the present invention, it is seen that outside photo-detector sleeve
Enclose and a visible-light detector sleeve fixed card slot is set every 30 °.
Further, the infrared and visible light image registration parameter correction device of the present invention, the target surface of tessellate testing target
It is made up of horizontally set and longitudinally disposed tungsten filament, between tungsten filament, leaves space.
Further, the infrared and visible light image registration parameter correction device of the present invention, tessellate testing target also includes
Lifting pedestal, for regulating the height of tessellate testing target 2 target surface.
Further, the infrared and visible light image registration parameter correction device of the present invention, described tungsten filament is by power module
Heating.
Further, the invention allows for a kind of infrared and visible light image registration parameter correcting method, including following
Step:
Step 1: fixing detection device in darkroom, utilizes optical axis correcting unit regulation Infrared Detectors and visible ray detection
Parallelism of optical axis between device；
Step 2: detection device is placed in outdoor, is placed on the maximum detectable range of Infrared Detectors by tessellate testing target
Place；
Step 3: open range finder, measures tessellate testing target to detecting the distance of device, and by distance information transmission extremely
In computer；
Step 4: connect tessellate testing target and power-supply system heats, opens Infrared Detectors and visible ray detection
Device, collects infrared image and visible images respectively, and by image by image transmission transmission to computer；
Step 5: computer receives and merge infrared image and visible images, then judges whether fusion image has ghost image；
Step 6: if fusion image has ghost image, then on the basis of infrared image, mobile or scaling visible images, until melting
Close image ghost image to disappear, record now tessellate testing target and the detection distance of device, the amount of movement of visible images or scaling
Amount；If fusion image does not has ghost image, record tessellate testing target and the detection distance of device, the location parameter of visible images；
Step 7: judge that the tessellate testing target distance with detection device whether more than 10 meters, the most then detects to close
Tessellate testing target 10 meters is moved in the direction of device, repeats step 3 to step 6；If it is not, then terminate registration parameter correction, by institute
Registration parameter is had to be depicted as form.
Further, the infrared and visible light image registration parameter correcting method of the present invention, optical axis correcting unit in step 1
Parallelism of optical axis between Infrared Detectors and visible-light detector is regulated to parallelism of optical axis more than 95%.
The present invention uses above technical scheme compared with prior art, has following technical effect that
1, the correcting unit of the present invention is according to the distance of target Yu device, calculates the Pan and Zoom correction parameter of image,
Achieve the automatic image registration after infrared image and visual image fusion；
2, the correcting unit of the present invention is not affected by target range, it is possible to registrate the target of the different depth of field；
3, the correcting unit of the present invention can be carried out Infrared Detectors becomes different angles with visible-light detector when
Registration parameter corrects；
4, the bearing calibration of the present invention uses data scaling method, decreases image data amount, accelerates arithmetic speed.
Accompanying drawing explanation
Fig. 1 is the infrared of the present invention and visible light image registration parameter correction device schematic diagram；
Fig. 2 is the detection apparatus structure schematic diagram of the present invention；
Fig. 3 is the tessellate testing target structural representation of the present invention；
Fig. 4 is the infrared of the present invention and visible light image registration parameter correcting method flow chart；
Fig. 5 is the flow chart of the computer fusion image of the present invention.
Reference implication: 1: detection device, 2: tessellate testing target, 3: image transmission, 4: optical axis correcting unit,
5: computer, 6: power module, 7: visible-light detector sleeve, 8: visible-light detector, 9: the fixing card of Infrared Detectors sleeve
Groove, 10: Infrared Detectors, 11: visible-light detector sleeve fixed card slot, 12: fixed support, 13: Infrared Detectors sleeve,
14: Infrared Detectors fixed structure, 15: visible-light detector multidimensional adjustment structure, 16: range finder, 17: tungsten filament, 18: the lifting end
Seat.
Detailed description of the invention
Embodiments of the present invention are described below in detail, and the example of described embodiment is shown in the drawings, the most ad initio
Represent same or similar element to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
The present invention proposes a kind of infrared and visible light image registration parameter correction device, as it is shown in figure 1, include detecting device
1, optical axis correcting unit 4, tessellate testing target 2, image transmission 3, computer 5 and power module 6, wherein:
Detection device 1, including fixed support 12, firm banking, infrared detection device and visible light detection device, infrared spy
Surveying device to be arranged on firm banking by fixed support 12, infrared detection device and visible light detection device are by draw-in groove even
Connect.
As in figure 2 it is shown, infrared detection device includes range finder 16, Infrared Detectors 10, Infrared Detectors sleeve 13 and red
External detector fixed structure 14, described Infrared Detectors 10 is fixing with Infrared Detectors fixed structure 14 to be connected, Infrared Detectors
It is internal that fixed structure 14 and range finder 16 are arranged on Infrared Detectors sleeve 13, and Infrared Detectors sleeve 13 periphery is every 30 ° all
The even Infrared Detectors sleeve fixed card slot 9 being provided with depression, range finder 16 is arranged on below Infrared Detectors sleeve 13, is used for
Measure the distance between measured target and detection device, and by distance information transmission to computer 5.
As in figure 2 it is shown, visible light detection device includes that visible-light detector 8, visible-light detector sleeve 7 and visible ray are visited
Surveying device multidimensional adjustment structure 15, described visible-light detector 8 is fixing with visible-light detector multidimensional adjustment structure 15 to be connected, it is seen that
It is internal that photo-detector multidimensional adjustment structure 15 is arranged on visible-light detector sleeve 7, it is seen that photo-detector sleeve 7 periphery every
30 ° are evenly arranged with prominent visible-light detector sleeve fixed card slot 11.When carrying out Photoperiodic effects in darkroom, it is seen that light is visited
In the case of the target existence in the picture of survey device multidimensional adjustment structure 15 obscures or is misaligned, it is possible to visible-light detector 8
Carry out upper and lower, left and right, pitching adjusts, and makes the target in fused image be completely superposed.
Infrared Detectors sleeve fixed card slot 9 and visible-light detector sleeve fixed card slot 11 can be engaged, according to
It is actually needed, can be combined fixing with multiple angles with Infrared Detectors 10 by draw-in groove visible-light detector 8, as long as i.e.
The optical axis of Infrared Detectors and visible-light detector is parallel to each other, and Infrared Detectors can become not with the position of visible-light detector
Same angle, native system also can carry out the correction of registration parameter, and during detector fixed angle difference, the correction size of registration parameter
The most different, say, that native system can carry out geometric precision correction to the detector fixed form of multi-form, this is also that this is
One feature of system.Such as Fig. 2, it is seen that photo-detector sleeve can be placed on the position on figure, it is also possible to be placed on red by draw-in groove
Putting on outer detection device, it is also possible to be placed on the right side of it, different position registration parameters is different, and native system all can carry out school
Just.
Optical axis correcting unit 4, in the target of lab simulation infinite point, with the use of visible-light detector multidimensional regulation knot
Structure 15 regulates the parallelism of optical axis between Infrared Detectors and visible-light detector so that it is more than or equal to 95%.
Tessellate testing target 2, as it is shown on figure 3, be used as the measurement target of detection correction.The target surface of tessellate testing target is by horizontal stroke
Form chessboard pattern to arranging with longitudinally disposed tungsten filament 17, leave space between tungsten filament 17 and prevent power supply short circuit, described tungsten filament
17 are heated by power module 6, make tungsten filament 17 produce temperature difference with surrounding so that it is to become well in Infrared Detectors 10
Picture.Tessellate testing target 2 also includes lifting pedestal 18, for regulating the height of tessellate testing target 2 target surface, makes its central point
With the midpoint of Infrared Detectors 10 on same horizontal line.
Image transmission 3, for the image transmitting infrared detection device and visible light detection device collects.
Computer 5, for the image merging infrared detection device and visible light detection device collects, and judges that image is
No it is registered.
Wherein, infrared detection device and visible light detection device are connected to computer by image transmission 3.
Power module 6, for powering for detection device 1, tessellate testing target 2 and computer 5.
Based on above-mentioned infrared and visible light image registration parameter correction device, it is also proposed that a kind of infrared and visible images
Registration parameter bearing calibration, as shown in Figure 4, Figure 5, comprises the following steps:
Step 1: fixing detection device in darkroom, utilize optical axis correcting unit in the target of lab simulation infinite point,
Parallelism of optical axis between regulation Infrared Detectors and visible-light detector, makes between Infrared Detectors and visible-light detector
Parallelism of optical axis is more than 95%；
Step 2: detection device is placed in outdoor, is placed on the maximum detectable range of Infrared Detectors by tessellate testing target
Place；
Step 3: open range finder, measures tessellate testing target to detecting the distance of device, and by distance information transmission extremely
In computer；
Step 4: connect tessellate testing target and power-supply system heats, opens Infrared Detectors and visible ray detection
Device, collects infrared image and visible images respectively, and by image by image transmission transmission to computer；
Step 5: computer receives and merge infrared image and visible images, then judges whether fusion image has ghost image；
Step 6: if fusion image has ghost image, then on the basis of infrared image, mobile or scaling visible images, until melting
Close image ghost image to disappear, record now tessellate testing target and the detection distance of device, the amount of movement of visible images or scaling
Amount；If fusion image does not has ghost image, record tessellate testing target and the detection distance of device, the location parameter of visible images；
Step 7: judge that the tessellate testing target distance with detection device whether more than 10 meters, the most then detects to close
Tessellate testing target 10 meters is moved in the direction of device, repeats step 3 to step 6；If it is not, then terminate registration parameter correction, by institute
Registration parameter is had to be depicted as form.
The above is only the some embodiments of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvement, these improve the guarantor that should be regarded as the present invention
Protect scope.
Claims (10)
- The most infrared with visible light image registration parameter correction device, it is characterised in that to include:Detection device, including fixed support, firm banking, infrared detection device and visible light detection device, infrared detection device Being arranged on firm banking by fixed support, infrared detection device and visible light detection device are connected by draw-in groove；Optical axis correcting unit, for regulating the parallelism of optical axis between infrared detection device and visible light detection device；Tessellate testing target, is used as the measurement target of detection correction；Image transmission, for the image transmitting infrared detection device and visible light detection device collects；Computer, for the image merging infrared detection device and visible light detection device collects；Wherein, infrared detection device and visible light detection device are connected to computer by image transmission；Power module, for for detecting device, tessellate testing target and computer power supply.
- The most according to claim 1 infrared with visible light image registration parameter correction device, it is characterised in that infrared acquisition Device includes range finder, Infrared Detectors, Infrared Detectors sleeve and Infrared Detectors fixed structure, described Infrared Detectors with Infrared Detectors fixed structure is fixing to be connected, and Infrared Detectors fixed structure and range finder are arranged in Infrared Detectors sleeve Portion, Infrared Detectors sleeve periphery is evenly arranged with the Infrared Detectors sleeve fixed card slot of depression, and range finder is arranged on infrared Below detector sleeve.
- The most according to claim 2 infrared with visible light image registration parameter correction device, it is characterised in that infrared acquisition Device sleeve periphery arranges an Infrared Detectors sleeve fixed card slot every 30 °.
- The most according to claim 1 infrared with visible light image registration parameter correction device, it is characterised in that visible ray is visited Survey device and include visible-light detector, visible-light detector sleeve and visible-light detector multidimensional adjustment structure, described visible ray Detector is fixing with visible-light detector multidimensional adjustment structure to be connected, it is seen that photo-detector multidimensional adjustment structure is arranged on visible ray Detector sleeve inner, it is seen that photo-detector sleeve periphery is evenly arranged with prominent visible-light detector sleeve fixed card slot.
- The most according to claim 4 infrared with visible light image registration parameter correction device, it is characterised in that visible ray is visited Survey device sleeve periphery and a visible-light detector sleeve fixed card slot is set every 30 °.
- The most according to claim 1 infrared with visible light image registration parameter correction device, it is characterised in that tessellate school The target surface of positive target is made up of horizontally set and longitudinally disposed tungsten filament, leaves space between tungsten filament.
- 7. according to the infrared and visible light image registration parameter correction device described in claim 1 or 6, it is characterised in that chessboard Shape testing target also includes lifting pedestal, for regulating the height of tessellate testing target 2 target surface.
- The most according to claim 6 infrared with visible light image registration parameter correction device, it is characterised in that described tungsten filament Heated by power module.
- 9. one kind infrared and visible light image registration parameter correcting method, it is characterised in that comprise the following steps:Step 1: fixing detection device in darkroom, utilize optical axis correcting unit regulation Infrared Detectors and visible-light detector it Between parallelism of optical axis；Step 2: detection device is placed in outdoor, is placed on tessellate testing target at the maximum detectable range of Infrared Detectors；Step 3: open range finder, measures the tessellate testing target distance to detection device, and by distance information transmission to calculating In machine；Step 4: connect tessellate testing target and power-supply system heats, open Infrared Detectors and visible-light detector, point Do not collect infrared image and visible images, and by image by image transmission transmission to computer；Step 5: computer receives and merge infrared image and visible images, then judges whether fusion image has ghost image；Step 6: if fusion image has ghost image, then on the basis of infrared image, mobile or scaling visible images, until merging figure As ghost image disappears, record now tessellate testing target and the detection distance of device, the amount of movement of visible images or amount of zoom；If Fusion image does not has ghost image, record tessellate testing target and the detection distance of device, the location parameter of visible images；Step 7: judge that the tessellate testing target distance with detection device whether more than 10 meters, the most then detects device to close Direction move tessellate testing target 10 meters, repeat step 3 to step 6；If it is not, then terminate registration parameter correction, join all Quasi-parameter is depicted as form.
- The most according to claim 9 infrared with visible light image registration parameter correcting method, it is characterised in that in step 1 Parallelism of optical axis regulation between Infrared Detectors and visible-light detector is more than by optical axis correcting unit to parallelism of optical axis 95%.
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