CN109862256A - A kind of device and localization method of vision positioning band fibre - Google Patents
A kind of device and localization method of vision positioning band fibre Download PDFInfo
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- CN109862256A CN109862256A CN201811588870.XA CN201811588870A CN109862256A CN 109862256 A CN109862256 A CN 109862256A CN 201811588870 A CN201811588870 A CN 201811588870A CN 109862256 A CN109862256 A CN 109862256A
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Abstract
The invention discloses the devices and localization method of a kind of vision positioning band fibre.It includes low range gamma camera, high magnification gamma camera, for controlling signal according to taking pictures under different light and shade light and taking pictures to band fibre, obtains image and is sent to control module；Camera motion axis, for driving low range video camera, high magnification video camera to do linear motion axially according to position control signal；Light source, for changing low range video camera, the light and shade light of high magnification shot by camera image；Control module, for taking pictures to low range gamma camera, the transmission of high magnification gamma camera and controlling signal, for sending position control signal to camera motion axis, for controlling light-source brightness, it takes pictures image for storing, for according to the optical fiber in the framing of taking pictures of storage, identification high magnification camera coverage；Microscope carrier.The present invention does not need to extract with fine characteristic information, has preferable practicability for the optical fiber of same specification, while easy to operate.
Description
Technical field
The invention belongs to optical fiber processing technical fields, and in particular to a kind of device and localization method of vision positioning band fibre.
Background technique
In the optical fiber processings technique such as fiber cut, fused fiber splice, it is also most heavy that positioning and the identification of optical fiber, which are primary,
The step wanted.The positioning of optical fiber is often realized in existing positioning with recognition methods by vision camera, and process is such that head
It is first taken pictures using camera to optical fiber, on the basis of imaging clearly, selects benchmark of one piece of region with feature as optical fiber
Region or template area；Then, use optical fiber identical with above-mentioned fiber dimensions as photograph subject, find institute into optical fiber figure
The region similar with template area as in；Finally, using the centre coordinate in the region found or be matched to as a reference coordinate,
Realize the positioning and identification to optical fiber.Existing positioning cannot be used for recognition methods with fine detection well, the reason is as follows that
Described in text: band fibre is to be alternatively arranged to be composed by multifiber, and the physical agents such as length, diameter of each optical fiber are identical,
Unique difference is only that the coat color of these optical fiber is different；These different colors will be with different gray scales after camera processing
The form of value displays, if identified using gray scale as feature with the optical fiber in fibre, needs ash corresponding to two optical fiber
Region is spent to there is difference as similar black and white or amplify the minor differences in two optical fiber corresponding grey scale regions so as to can be more
It accurately detects；Of course, it is possible to using the gray difference between the camera shooting optical fiber and amplifying fiber of high magnification, but it is high
Multiplying power camera fields of view is narrow, cannot obtain confirming which during band is fine the optical fiber in present viewing field be with fine global image
Root；In conclusion cannot be positioned well using gray scale as feature, identify that band is fine, there is an urgent need to a kind of new positioning, identification side
Method is used for fine positioning, identification.
Summary of the invention
The object of the invention is to solve existing positioning, recognition methods existing for above-mentioned background technique to fit well
For providing the device and localization method of a kind of vision positioning band fibre with fine problem.
The technical solution adopted by the present invention is that: a kind of device of vision positioning band fibre, comprising:
Low range gamma camera, for according to take pictures control signal under different light and shade light to band fibre take pictures, obtain
Image is sent to control module；
High magnification gamma camera, for according to take pictures control signal under different light and shade light to band fibre take pictures, obtain
Image is sent to control module；
Camera motion axis, for driving low range video camera, high magnification video camera to do along axis according to position control signal
The linear motion in direction；
Light source, for changing low range video camera, the light and shade light of high magnification shot by camera image；
Control module is used for for taking pictures to low range gamma camera, the transmission of high magnification gamma camera and controlling signal to video camera
Kinematic axis sends position control signal, and the ratio for adjusting R G B synthesizes to control light-source brightness, for storing figure of taking pictures
Picture, for according to the optical fiber in the framing of taking pictures of storage, identification high magnification camera coverage；
Microscope carrier, for holding the device of simultaneously fixing belt fibre.
Further, the low range video camera is fixed with high magnification video camera, the low range video camera and high magnification
The center spacing of video camera is L1；Light source is connected with low range video camera, high magnification video camera respectively；The low range camera shooting
Machine and high magnification video camera are hung on camera motion axis；The operating distance of the low range video camera is H1, the high magnification
The operating distance of video camera is H2；It is mobile that low range video camera and high magnification video camera can be made in tri- directions XYZ relative to microscope carrier.
Further, the operating distance of the low range video camera is H1；The operating distance of the high magnification video camera is
H2；The operating distance H2 of high magnification video camera is less than the operating distance H1 of low range video camera.
Further, the operating position H1 of low range video camera should meet the height that can clearly take pictures.Low range video camera
Field range should can cover on microscope carrier with fibre locating for region；The relative motion of low range video camera and microscope carrier can be low
Magnification camera motion stage is fixed, and is also possible to microscope carrier movement low range video camera and is fixed or each autokinesis of the two, they
Movement implementation on method of the present invention without influence.
Further, the operating position H2 of high magnification video camera should meet the height that can clearly take pictures；High magnification video camera
Field range need can and be only capable of covering microscope carrier on band fibre locating for partial region, i.e., high magnification video camera be used for shoot with fibre
Local map；The relative motion of high magnification video camera and microscope carrier can be high magnification camera motion microscope carrier and fix, and be also possible to carry
Platform moves high magnification camera motion or each autokinesis of the two, their movement implementation to method of the present invention without
It influences.
A kind of localization method of the device of vision positioning band fibre, comprising the following steps:
(1), the operating distance H1 of low range video camera and the operating distance H2 of high magnification video camera are determined；
(2), the relative position for adjusting microscope carrier and low range video camera, makes microscope carrier be located at lower section and the band of low range video camera
Fibre enters in its visual field, it is ensured that low range video camera imaging is clear, and the light source of different color light is then used to image as low range
The light source of machine successively takes pictures to band fibre using low range video camera, obtains the final image of low range video camera；
(3), the relative position for adjusting high magnification video camera and microscope carrier, makes microscope carrier be located at the lower section of high magnification video camera, band
Fine part can occupy the global visual field and the imaging clearly of high magnification video camera, obtain microscope carrier relative to low range video camera edge
The offset L2 in the direction x is positioned, the optical fiber in identification high magnification camera coverage.
In above-mentioned steps (3), the process of the optical fiber in the positioning high magnification camera coverage: microscope carrier is relative to low range
The offset of video camera in the x-direction be L2, obtain low range video camera at the picture centre O1 and high magnification after image translation L2
Video camera at picture centre P offset L3, this difference between L1 and L2 of offset L3, according to the size of L1 and L2, low range
Video camera at the position of the picture centre O1 after image translation L2 be likely located at high magnification video camera at picture centre P a left side
Side or the right.
In above-mentioned steps (3), the process of the optical fiber in the identification high magnification camera coverage: according to two picture centre O1
With the spacing L3 of P and the visual field of high magnification video camera or the size relation of picture size, can determine low range video camera institute at
Whether the picture centre O1 after image translation L2 is located on image formed by high magnification video camera；As the center O1 and P of two images
Spacing L3 be less than high magnification video camera a half view or picture size when, low range video camera at image translation L2 after
Picture centre O1 obtains the position of its image formed by high magnification video camera on the image formed by high magnification video camera at this time
O2, and with position at marked P and O2 two；In high magnification video camera institute on image, positioned at first, the left side of O2 point
Optical fiber correspond to low range video camera at picture centre O first, left side optical fiber；When low range video camera institute is at image translation
Picture centre O1 after L2 not on the image formed by high magnification video camera when, need according to the spacing L3 at two center O1, P and high
The visual field of magnification camera half or the difference L4 of picture size, to judge optical fiber is which root optical fiber in the visual field, in low range
Video camera in image find range image center O physical length be greater than L4 first optical fiber, as high magnification image
First optical fiber of left or right side in the machine visual field, left side or right side are determined according to the relative position of two center P, O1.
The present invention takes pictures to band fibre by the video camera of two multiplying powers of height, extract the fine overall situation of band obtained with
Local message, according to these information, present invention positioning identifies band fibre.Compared with the existing methods, side of the present invention
Method, does not need to extract with fine characteristic information, has preferable practicability for the optical fiber of same specification, while easy to operate,
It only needs successively to take pictures to band line using two cameras, then positioning optical fiber is identified by image processing techniques.
Detailed description of the invention
Fig. 1 is the structural schematic diagram with fine positioning device；
Fig. 2 is gamma camera imaging schematic diagram under different light sources；
Fig. 3 is the schematic diagram of gamma camera imaging composite diagram；
Fig. 4 is microscope carrier positional shift schematic diagram；
Fig. 5 is the statuette heart away from lower band fibre positioning schematic diagram；
Fig. 6 is big as the heart is away from lower band fibre positioning schematic diagram.
In figure: 1- low range gamma camera；2- high magnification gamma camera；3- microscope carrier；4- camera movements axis；5- light source；6- control
Molding block.
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments, convenient for this hair is well understood
It is bright, but they limiting the invention.
As shown in Figure 1, the present invention is by low range video camera 1, high magnification video camera 2, microscope carrier 3, camera motion axis 4, light
Source 5 forms.
The present invention is to be taken pictures by the video camera of two kinds of multiplying powers of height to band fibre, obtains believing with fine overall situation and partial situation
Breath is realized in conjunction with image processing techniques with fine positioning and identification.Band fibre of the present invention positions, recognition methods is according to following
Step carries out:
Step 1: determine low range video camera 1 and high magnification video camera 2 at the pixel of image and the pass of physical length
System, i.e., a pixel corresponds to how many millimeter.
According to the model of camera, all multi-parameters of camera can be obtained.For example, low power of the present invention can be inquired
The pixel size x1*y1 of rate video camera 1, the size d1*d2 of low range video camera 1, low range video camera 1 optical magnification
The size d3* of the focal length r1 of α, low range video camera 1, the pixel size x2*y2 of high magnification video camera 2, high magnification video camera 2
D4, the optical magnification β of high magnification video camera 2, high magnification video camera 2 focal length r2.It will be placed into fibre on microscope carrier 3 and solid
It sets, the relative position of adjustment microscope carrier 3 and low range camera shooting 1, microscope carrier 3 is made to be located at the lower section of low range video camera 1 and is imaged clear
It is clear, the difference in height of low range video camera 1 and microscope carrier 3 at this time is obtained, this difference in height is the operating distance of low range video camera 1
H1；Next, the relative position of adjustment microscope carrier 3 and high magnification video camera 2, makes microscope carrier 3 be located at the lower section of high magnification video camera 2,
High magnification video camera 2 is adjusted, makes the fine imaging clearly of band, obtains the difference in height of high magnification video camera 2 and microscope carrier 3 at this time, this height
Difference is also the operating distance of high magnification video camera 2.It is long with formula two to can be obtained the physics under unit pixel in conjunction with formula one
Degree.
Here it is noted that video camera size and pixel have the value of x, y both direction, if it is to be understood that the direction x
Physical length under unit pixel just all uses the value in the direction x, and the direction y is also the same.It so can be obtained low described in this patent
Magnification camera 1 and high magnification video camera 2 respectively the direction x, y unit pixel length X1, Y1, X2, Y2.
Step 2: the relative position of adjustment microscope carrier 3 and low range video camera 1, makes microscope carrier 3 be located at low range video camera 1
Lower section and with fibre enter its visual field in, it is ensured that 1 imaging clearly of low range video camera；Then use the light source 5 of different color light as
The light source of low range video camera 1 successively takes pictures to band fibre using low range video camera 1.
Due to fibre being arranged by the different multifiber of coat color, by light source 5 of the present invention
Under irradiation, optical fiber with the coloured light solid colour of light source 5, after the shooting of low range video camera 1, formed optical fiber image region
It will be the most bright part in whole image region.Low range video camera 1 of the present invention selects black and white tupe, with light source
One piece of white area will be presented in the consistent optical fiber of 5 colors on the image, and white to black will be presented in the optical fiber of other colors on the image
Between different gray areas.Change the coloured light of light source 5, low range video camera 1 of the present invention will obtain multiple light and shade areas
The fine image (as shown in Figure 2) of the different band in domain.This comprehensive a few width image can obtain the fine image of light and dark band (such as
Shown in Fig. 3), the imaging region of every optical fiber is in other words become bright areas entirely, other regions are all secretly, with such width
Final image of the image as low range video camera 1.
The combined process of image is such that the change of the coloured light because of light source 5, and the present invention has obtained several bright areas not
The fine image of same band, the most bright extracted region in every piece image is come out, the image being composed is final figure
Picture.In order to which synthesis goes out the fine image of light and dark band, present invention employs the methods of two dimensional discrete Fourier transform.For each
Width image, the present invention establish the mathematic(al) representation of pixel Yu its gray value, and wherein x, y are respectively picture on image to as f (x, y)
The transverse and longitudinal coordinate of vegetarian refreshments.Using formula three, available each image in a frequency domain the case where.So-called frequency domain, just the present invention comes
It says, refers to the sharply degree of gray-value variation on image, change most violent part (high frequency section) with regard to bright in representative image
The dark maximum region of difference, is based on this, the high frequency section of every piece image is combined, and becomes the figure in the new frequency domain of one kind
Picture, can be common image by the image restoring in frequency domain using formula four, and obtained image has light and dark spy
Property.
Wherein M, N for low range video camera 1 at image size, u, v be image on pixel gray scale in the direction x, y
Frequency.
Step 3: the relative position of adjustment high magnification video camera 2 and microscope carrier 3, makes microscope carrier 3 be located at high magnification video camera 2
Lower section can occupy the global visual field and the imaging clearly of high magnification video camera 2 with fine part, obtain microscope carrier 3 relative to low power
The offset L2 (as shown in Figure 4) of rate video camera 1 in the x-direction.
As shown in figure 4, high magnification video camera 2 of the present invention visual field compared with low range video camera 1 is small, energy in the visual field
The optical fiber radical seen is few, but is their ability to amplify the local message of optical fiber, utilizes the available high magnification of computer technology
In 2 visual field of video camera the centre coordinate Pn of every optical fiber and at image centre coordinate P.Second step is integrated out
The fine image of light and dark band can be relatively easy to obtain the centre coordinate with every optical fiber in fibre because its terminator is prominent
Pm and at image centre coordinate O.Next need to confirm that the optical fiber in 2 visual field of high magnification video camera is low range camera shooting
Chequered with black and white which root or which root optical fiber in fine image that machine 1 integrates out.
Positioning, the process for identifying the optical fiber in 2 visual field of high magnification video camera are so: microscope carrier 3 is relative to low range
The offset of video camera 1 in the x-direction is L2, it is believed that is 1 L2 that is shifted in the x-direction at image of low range video camera, in this way
Can obtain low range video camera 1 at after image translation L2 picture centre O1 and the institute of high magnification video camera 2 at picture centre P
Offset L3, this difference for L1 and L2 between of offset L3, according to the size of L1 and L2, low range video camera 1 at image translation
The position of picture centre O1 after L2 be likely located at high magnification video camera 2 at picture centre P the left side or the right；In addition to concern
The drift condition of two image centers, it is often more important that need to consider the institute of low range camera 1 at as image shift L2 away from
From rear, whether picture centre O1 is located on image formed by high magnification video camera 2；According to the spacing of two picture centre O1 and P
L3 and the visual field of high magnification video camera 2 or the size relation of picture size can determine 1 institute of low range video camera at image translation
Whether the picture centre O1 after L2 is located on image formed by high magnification video camera 2；As shown in figure 5, as the center O1 of two images
When being less than the half view or picture size of high magnification video camera 2 with the spacing L3 of P, 1 institute of low range video camera is at image translation
Picture centre O1 after L2 obtains its figure formed by high magnification video camera 2 on the image formed by high magnification video camera 2 at this time
The position O2 of picture, and with position at marked P and O2 two；In the institute of high magnification video camera 2 on image, positioned at the left side of O2 point
First optical fiber correspond to low range video camera 1 at picture centre O first, left side optical fiber；As shown in fig. 6, working as low range
Video camera 1 on the picture centre O1 after image translation the L2 not image formed by high magnification video camera 2 when, need basis
The spacing L3 and the visual field of 2 half of high magnification video camera or the difference L4 of picture size at two center O1, P, to judge light in the visual field
Which root optical fiber fibre is, is greater than the of L4 at the physical length for finding range image center O in image in the institute of low range video camera 1
A piece optical fiber, first optical fiber of left or right side as in 2 visual field of high magnification video camera, left side or right side are according in two
The relative position of the heart P, O1 determines.
The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (6)
1. a kind of device of vision positioning band fibre, it is characterised in that: include:
Low range gamma camera, for according to take pictures control signal under different light and shade light to band fibre take pictures, obtain image
It is sent to control module；
High magnification gamma camera, for according to take pictures control signal under different light and shade light to band fibre take pictures, obtain image
It is sent to control module；
Camera motion axis, for driving low range video camera, high magnification video camera to do axially according to position control signal
Linear motion；
Light source, for changing low range video camera, the light and shade light of high magnification shot by camera image；
Control module is used for for taking pictures to low range gamma camera, the transmission of high magnification gamma camera and controlling signal to camera motion
Axis sends position control signal, for controlling light-source brightness, for storing image of taking pictures, for fixed according to the image of taking pictures of storage
Optical fiber in position, identification high magnification camera coverage；
Microscope carrier, for holding the device of simultaneously fixing belt fibre.
2. the device of vision positioning band fibre according to claim 1, it is characterised in that: the low range video camera and high magnification
Video camera is fixed, and the center spacing of the low range video camera and high magnification video camera is L1；Light source is imaged with low range respectively
Machine, high magnification video camera are connected；The low range video camera and high magnification video camera are hung on camera motion axis；It is described low
The operating distance of magnification camera is H1, and the operating distance of the high magnification video camera is H2；Low range video camera and high magnification
It is mobile that video camera can be made in tri- directions XYZ relative to microscope carrier.
3. the device of vision positioning band fibre according to claim 2, it is characterised in that: the working distance of the low range video camera
From for H1；The operating distance of the high magnification video camera is H2；The operating distance H2 of high magnification video camera is imaged less than low range
The operating distance H1 of machine.
4. a kind of localization method of the device of vision positioning band fibre, it is characterised in that: the following steps are included:
(1), the operating distance H1 of low range video camera and the operating distance H2 of high magnification video camera are determined；
(2), adjust microscope carrier and low range video camera relative position, make microscope carrier be located at low range video camera lower section and with fibre into
Enter in its visual field, it is ensured that low range video camera imaging is clear, then uses the light source of different color light as low range video camera
Light source successively takes pictures to band fibre using low range video camera, obtains the final image of low range video camera；
(3), the relative position for adjusting high magnification video camera and microscope carrier, makes microscope carrier be located at the lower section of high magnification video camera, with fibre
Part can occupy the global visual field and the imaging clearly of high magnification video camera, obtain microscope carrier relative to low range video camera along the side x
To offset L2, positioning, identification high magnification camera coverage in optical fiber.
5. the localization method of the device of vision positioning band fibre according to claim 4, it is characterised in that: in above-mentioned steps (3),
The process of optical fiber in the positioning high magnification camera coverage: microscope carrier is relative to the offset of low range video camera in the x-direction
L2, obtain low range video camera at after image translation L2 picture centre O1 and high magnification video camera at picture centre P's
L3 is deviated, difference of this offset L3 between L1 and L2, according to the size of L1 and L2, after low range video camera institute is at image translation L2
Picture centre O1 position be likely located at high magnification video camera at picture centre P the left side or the right.
6. the localization method of the device of vision positioning band fibre according to claim 5, it is characterised in that: in above-mentioned steps (3),
The process of optical fiber in the identification high magnification camera coverage: it is taken the photograph according to the spacing L3 of two picture centre O1 and P with high magnification
The visual field of camera or the size relation of picture size, can determine low range video camera at the picture centre after image translation L2
Whether O1 is located on image formed by high magnification video camera；When the spacing L3 of the center O1 and P of two images are imaged less than high magnification
When the half view or picture size of machine, low range video camera at the picture centre O1 after image translation L2 high magnification image
On image formed by machine, the position O2 of its image formed by high magnification video camera is obtained at this time, and with marked P and O2 two
Locate position；In high magnification video camera institute on image, positioned at the left side of O2 point, first optical fiber corresponds to low range video camera institute
At first, the left side optical fiber of picture centre O；When low range video camera at image translation L2 after picture centre O1 not in height
When on image formed by magnification camera, need according to the spacing L3 at two center O1, P and the visual field of high magnification video camera half or
The difference L4 of picture size, to judge optical fiber is which root optical fiber in the visual field, low range video camera institute at found in image away from
Physical length from picture centre O is greater than first optical fiber of L4, the of left or right side as in high magnification camera coverage
A piece optical fiber, left side or right side are determined according to the relative position of two center P, O1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811588870.XA CN109862256B (en) | 2018-12-25 | 2018-12-25 | Device and method for visually positioning belt fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811588870.XA CN109862256B (en) | 2018-12-25 | 2018-12-25 | Device and method for visually positioning belt fiber |
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| CN109862256B CN109862256B (en) | 2020-10-27 |
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| CN114518217A (en) * | 2021-12-31 | 2022-05-20 | 深圳市瑞图生物技术有限公司 | Method for determining center distance between lenses, microscope control device, and storage medium |
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| CN109862256B (en) | 2020-10-27 |
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