CN205123882U - Image scanning system and device - Google Patents
Image scanning system and device Download PDFInfo
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- CN205123882U CN205123882U CN201520976883.XU CN201520976883U CN205123882U CN 205123882 U CN205123882 U CN 205123882U CN 201520976883 U CN201520976883 U CN 201520976883U CN 205123882 U CN205123882 U CN 205123882U
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Abstract
This application embodiment provides an image scanning system, device, and wherein scanning system includes the image board and carries out the image scanning device that scans to the image board, and the image scanning device include: central control module and with the equal electric connection's of central control module image board transmission module, image scanning module and image processing module, image processing module combines the position to detect to flow the image signal who gathers and handle, carries out just location, accurate positioning and the three processing procedure of picture image rotation to the image, can guarantee that image information extracts the accuracy, and the image border obtains better keeping, compares prior art, can obtain comparatively ideal ranks and align, have the outgoing picture who deflects.
Description
Technical field
The utility model belongs to X ray computer photographic imagery field, the system especially using the image information of laser to Using Image Plate record to scan and device.
Background technology
When X ray penetrates imaging object, incide on the Using Image Plate (ImagingPlate, IP) containing Optical-excitation fluorescent powder, a frame latent image (LatentImage) can be produced, and be stored in Using Image Plate.With the laser pumping Using Image Plate of certain wavelength, Using Image Plate can launch the intensity fluorescence consistent with latent image Energy distribution, and these fluorescence are collected, convert the signal of telecommunication to and digitlization, thus latent image is converted to the two-dimensional digital image that can transmit and store.
The scanning means that current existence is applied to different field, can reads the Using Image Plate sub-image information of all size, but because the beginning of image scan, end time exist deviation, and may deviation be there is in the position of Using Image Plate when interleave scan device, make that deviation is existed to the location of image, thus cause that image is synchronous in collection, there is error in ranks alignment etc.Although this part error can carry out making up to a certain degree by the image procossing of rear end, excessive image procossing often causes image blurring.For the scanning means of miniaturization, as being applied to the tooth sheet scanner of gear division, will be more difficult in image position accuracy guarantee.
Utility model content
The purpose of this utility model is to provide a kind of image-scanning system and device, accurately can locate image, the problem such as image blurring avoiding that follow-up excessive image procossing causes.
For achieving the above object, the utility model embodiment provides a kind of image-scanning system on the one hand, comprise Using Image Plate and scan to obtain the device of image scanning of image to described Using Image Plate, described device of image scanning comprises: central control module and the Using Image Plate transmission module, image scanning module and the image processing module that are all electrically connected with described central control module;
Described Using Image Plate transmission module comprises position detection unit and Using Image Plate gear unit, and described image processing module comprises image just locating module, the accurate locating module of image and image rotation module;
Described position detection unit is used for carrying out detecting obtaining primary importance testing result and carrying out detection to the laser position of described image scanning module to the position of described Using Image Plate obtaining second place testing result;
Described Using Image Plate gear unit is used for determining after described Using Image Plate enters the CD feeding port of described image scanning module according to described primary importance testing result driving described Using Image Plate to move to the outlet of described image scanning module;
Described central control module is used for determining when described Using Image Plate enters the CD feeding port of described image scanning module according to described primary importance testing result controlling described image scanning module unlatching image scanning;
Described image scanning module is used for utilizing laser rotary mode to carry out line scanning to described Using Image Plate, obtains often capable digital signal streams and send described digital signal by described central control module to flow to described image processing module;
Described image just locating module is used for carrying out image initial location according to described primary importance testing result, described second place testing result and described digital signal streams, generates initial pictures matrix;
The accurate locating module of described image for judge described initial pictures matrix often row, often arrange and whether there is signal and generate exact image matrix according to judged result, described exact image matrix is the minimum matrix comprising effective image-region;
Described image rotation module is used for according to the apex coordinate computed image angle of inclination Φ of described exact image matrix, if Φ ≠ 0, then by image rotation algorithm by image clockwise or rotated counterclockwise by angle Φ to generate final image matrix.
Preferably, described position detection unit comprises position transducer R and position transducer A;
Described position transducer R is positioned at the CD feeding port place of described image scanning module, whether arrives described CD feeding port for detecting described Using Image Plate;
Described position transducer A is for detecting the position of the laser of described image scanning module transmitting, and described position transducer A is positioned at described image scanning module and is positioned at outside the row region of described Using Image Plate;
Described image is locating module just, for when determining described Using Image Plate and arriving pre-starting position, digital signal acquiring and record is started at next line, when determining described laser and arriving described position transducer A, start the digital signal record of current line, when determining described laser and arriving row end position, terminate the digital signal record of current line, when determining described Using Image Plate and arriving pre-end position, at next line end number signals collecting and record
Described pre-starting position be described position transducer R position or between described position transducer R and the plane of scanning motion of described laser, described pre-end position is between described laser scanning plane and the piece mouth of described image scanning module, described row end position is positioned at described image scanning module and lays respectively at the both sides in the row region of described Using Image Plate with described position transducer A and all do not blocked by described Using Image Plate, and described laser first scans position transducer A when execution one line scanning scans row end position again.
Preferably, described position detection unit also comprises position transducer P, Q, B;
Wherein said position transducer P is positioned at described pre-starting position place, and described position transducer Q is positioned at described pre-end position place, and described position transducer B is positioned at described row end position place.
Preferably, described position transducer R, P, Q are all made up of at least one group of light source and receiver, and described position transducer A, B are made up of laser pickoff.
Preferably, described device of image scanning also comprises at least one timer for timing; The time length of described timing regulates according to Using Image Plate translational speed and/or laser scanning speed;
Described image is locating module just, for judging according to the timing results of described timer whether described Using Image Plate arrives described pre-starting position, in advance end position and judge whether described laser arrives row end position.
Preferably, described device of image scanning also comprises image and wipes module, for wiping the latent image from described image scanning module Using Image Plate out.
Preferably, the LED light source of described image erasing module uses ruddiness, and optical wavelength peak value is 600nm-700nm.
Preferably, described Using Image Plate is flexible Using Image Plate, and described Using Image Plate gear unit comprises for making described flexible Using Image Plate curve the regulating wheel of circular arc by extruding, and described laser is identical with the distance of a line each position to described Using Image Plate.
Preferably, described image-scanning system also comprises computer, for receiving the image that described device of image scanning exports, and according to user's request by described graphical analysis, preservation or display.
Preferably, described image-scanning system is applied in dentistry.
The utility model also provides a kind of device of image scanning as described in the claims.
The utility model by increasing an image processing module in device of image scanning, the detection of this module binding site transducer flows to row relax to the picture signal gathered, just location, accurately location and image rotation three processing procedures are carried out to image, can guarantee that image information is extracted accurately, image edge is better kept, compared to existing technology, ideal ranks alignment, the output image of zero deflection can be obtained.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is scanning system structure chart;
Fig. 2 is device of image scanning structure chart;
Fig. 3 is image transmission module structure chart;
Fig. 4 is image scanning module structure chart;
Fig. 5 is central control module and other model calling schematic diagrames;
Fig. 6 is image scan process chart;
Fig. 7 is position transducer R, P, Q installation site schematic diagram;
Fig. 8 A, 8B are the utility model laser scanning floor map;
Fig. 9 is image just positioning embodiment one flow chart;
Figure 10 is image just positioning embodiment two flow chart;
Figure 11 is the image array that image just locates rear acquisition;
Figure 12 A, 12B, 13-15 are that image accurately locates schematic diagram;
Figure 16 is the image array after image is accurately located;
Figure 17 is the image array after image rotation;
Figure 18 is the accurate positioning flow figure of image.
Embodiment
Technical scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the application's protection.
The utility model relates to a kind of image-scanning system for computer X-ray.As shown in Figure 1, this system comprise record expose sub-image Using Image Plate (ImagingPlate also claims IP plate), by using this Using Image Plate of the continuous rapid scanning of laser, the fluorescence excited is collected, opto-electronic conversion, A/D conversion synthesize the device of image scanning of a width two dimensional image after converting the sub-image be recorded on Using Image Plate to digital information and be used for receiving the workbench of the image that device of image scanning exports.
This workbench can be man-machine interactive platform, by the support of software, can carry out sweep object registration, starts image scan, browses, analyzes, preserves the functions such as image.Concrete, this workbench can be connected by wired (as Serial Port Line, USB line, RJ45 netting twine etc.) or the mode of wireless (as bluetooth, wifi, 3G/4G etc.) with scanning means.The instruction that this workbench certain can also accept user controls device of image scanning.
As shown in Figure 2, above-mentioned device of image scanning forms primarily of Using Image Plate transmission module, image scanning module, image processing module, network driver block, power module and central control module.
The Using Image Plate that it should be noted that in Fig. 2 is not the organic component of device of image scanning, is just used for illustrating as the object to be scanned inserted.
Above-mentioned Using Image Plate transmission module comprises position detection unit and Using Image Plate gear unit, and image processing module comprises image just locating module, the accurate locating module of image and image rotation module.
Above-mentioned position detection unit is used for carrying out detecting obtaining primary importance testing result and carrying out detection to the laser position of image scanning module to the position of Using Image Plate obtaining second place testing result.
Using Image Plate gear unit is used for determining after Using Image Plate enters the CD feeding port of image scanning module according to primary importance testing result driving Using Image Plate to move to the outlet of image scanning module.
Central control module is used for determining when Using Image Plate enters the CD feeding port of image scanning module according to primary importance testing result controlling image scanning module unlatching image scanning.
Image scanning module is used for utilizing laser rotary mode to carry out line scanning to Using Image Plate, obtains often capable digital signal streams and send digital signal by central control module to flow to image processing module.
Image just locating module is used for carrying out image initial location according to primary importance testing result, second place testing result and digital signal streams, generates initial pictures matrix.
The accurate locating module of image for judge initial pictures matrix often row, often arrange and whether there is signal and generate exact image matrix according to judged result, exact image matrix is the minimum matrix comprising effective image-region.
Image rotation module is used for according to the apex coordinate computed image angle of inclination Φ of exact image matrix, if Φ ≠ 0, then by image rotation algorithm by image clockwise or rotated counterclockwise by angle Φ to generate final image matrix.
As shown in Figure 3, be image transmission module structural representation, wherein image gear unit comprises conveyer belt, driving wheel, driven pulley, regulating wheel, supporting construction, motor #1, and motor drives and control circuit #1.Wherein, wherein, driving wheel, driven pulley, regulating wheel are used for driving and fastening conveyer belt; Using Image Plate regulating wheel is used for fastening Using Image Plate and Using Image Plate cambered surface moulding (flexible Using Image Plate).Motor #1 works together with conveyer belt, drives Using Image Plate to continue to move forward.Described motor drives and control circuit #1, runs, and provide velocity accuracy to control for drive motors #1.
Position detection unit comprises position transducer and position detecting circuit.Described position transducer by organizing photoelectric tube or photodiode is formed more, can not only detect whether Using Image Plate inserts (primary importance testing result) or shift out scan module, initial zero location (second place testing result) can also be carried out to every row image scan.Described position detecting circuit, for activation point working sensor, and carries out useful signal detection.
Image scanning module major function is, start the laser beam of laser to stable output power, the light velocity, after focusing to certain spot size, impinges perpendicularly on Using Image Plate on certain very little region, inspires the fluorescence signal with the proportional relation of sub-image gray value in this region.The fluorescence signal excited is collected through light path, and through steps such as opto-electronic conversion, A/D conversions, is converted to digital signal streams by equal proportion.Described laser beam is necessarily through a specular-reflection unit, and therefore this device at High Rotation Speed under driven by motor, can achieve the scanning in all regions on Using Image Plate.As shown in Figure 4, image scanning module at least comprises following assembly:
Laser and drive circuit for laser.Described laser provides light source for image scan.Laser exports ruddiness, and optical wavelength, can the semiconductor laser of choice for use helium neon laser or specific wavelength between 600nm ~ 700nm.Described drive circuit for laser, for laser provides constant current to drive, and guarantees the temperature stability of laser.
Laser adjustment light path.Be made up of one group of lens and supporting construction thereof, adjust the output light source of laser, guarantee to project spot size on Using Image Plate continually and steadily in required scope, such as hot spot should be less than 50 microns.
Motor #2, and motor drives and control circuit #2.Motor #2, for driving laser to adjust light path, especially driving light reflection mirror wherein to rotate, making laser can continue, circumferentially scan evenly.Described motor drives and control circuit #2, runs, and provide velocity accuracy to control for drive motors #2.
Phosphor collection light path.Laser facula projects on Using Image Plate relevant position, can inspire the fluorescence of a wavelength range instantaneously, and the sub-image information that the intensity of fluorescence and Using Image Plate record exists proportionate relationship.Fluorescence, according to certain outside scattering of angular distribution rule, is collected by phosphor collection light path.Phosphor collection optical routing one group of lens or speculum composition, object is focused on by the fluorescence scattered out, and project in the light collection window of corresponding electrooptical device.
Electrooptical device.For collecting the fluorescence signal through focusing on, and amplify, and convert the current signal of some strength in proportion to.Typically, laser scanning device adopts photomultiplier (PMT) to carry out the work of optical signal amplification and opto-electronic conversion.
Signals collecting control circuit.Drive for electrooptical device provides and control on the one hand, realize the A/D sampling of the signal of telecommunication on the other hand, current signal is converted to digital signal.Sample rate is set by central controller.
Above-mentioned image processing module, mainly under the scheduling of central control module, completes and Using Image Plate latent image information is extracted from the signal stream gathered, and be combined into a width two-dimensional rectangular image like clockwork.
Described image processing module can integrate with central control module, also can be made up of independent hardware, such as FPGA, DSP etc.
Described image processing module, just locate for image, accurately locate and image rotation:
Image is just located, and based on the transducer of fixed position, such as photoelectric tube or photodiode, or combined sensor and timer, realize tentatively determining Using Image Plate column locations.Image is accurately located.Based on the image information gathered, by signal strength analysis, accurately determine the border of Using Image Plate.Image rotation.To the image inclination caused due to Using Image Plate malposition, corrected as turned clockwise by image rotation.
Above-mentioned network driver block is for realizing the interconnection between the central control module of scanning means and workbench or other parametric controller, be convenient to workbench and send controling parameters and control command to scanning means, and scanning means is to workbench transmit image data, work state information and abnormal information.
In the utility model, network driver block includes but not limited to:
(1) USB driver module.For realizing the usb communication of workbench and scanning means.
(2) Ethernet driver module.Gigabit or 100 m ethernet for realizing workbench and scanning means communicate.
(3) wifi driver module.For realizing the short-distance wireless communication between moving bolster and scanning means.
(4) bluetooth module.For realizing moving bolster and scanning means short-distance wireless communication.
(5) 3G/4G communication module.For realizing moving bolster or remote platform and scanning means mobile communication.
Each functional module that above-mentioned power module is used for whole scanning means is powered, and voltage is no more than 24V.Power supply control is carried out by central control module.
As shown in Figure 5, be central control module and other modules connection layouts.Central control module is used for connecting and control each n-back test module peripheral, controls the orderly function of whole scanning means.Central control unit can be ARM+FPGA platform, can be FPGA+DSP platform, also can be independent FPGA module.
Device of image scanning of the present utility model also comprises image erasing module.
Through the Using Image Plate of laser traverse scanning, still likely containing remaining latent image information.Can reuse in order to ensure Using Image Plate, and Multiple-Scan image can not interfere with each other, need the latent image of remnants to wipe out.
To the Using Image Plate region through above-mentioned laser scanning, use the LED light source face battle array of relatively high power, latent image remaining on Using Image Plate is wiped.Described LED light source uses ruddiness, and optical wavelength peak value is 600nm-700nm.By erasing, make to be resetted completely by the electronics of excitation of X-rays, Using Image Plate can reuse.
Fig. 6 is the whole handling process of image scan:
The object of scanning means process is through the Using Image Plate after x-ray bombardment, and this Using Image Plate remains with the latent image information at x-ray bombardment position, as the tooth, thoracic cavity, four limbs etc. of patient.Described Using Image Plate must through being inserted into the CD feeding port of scanning means manually.
Generally, namely holding state is entered after scanning means start.In the standby state, position detecting circuit meeting continuous service, after detecting that Using Image Plate inserts CD feeding port, can start Using Image Plate scanning process by central control module.
The first step, starter motor #2 drive circuit, drive laser adjustment light path High Rotation Speed by motor #2, Negotiation speed precision controlling, guarantees motor uniform motion under setting speed;
Second step, starter motor #1 drive circuit, makes motor #1 uniform motion at lower speeds, transmits Using Image Plate enter scanning area evenly by conveyer belt.By the squeezing action of regulating wheel, make Using Image Plate curve circular arc, guarantee that the center of circle of circular arc overlaps with the axis of rotation of motor #2 by structural design;
3rd step, starts drive circuit for laser, lights laser and make its power stability.Through the small size hot spot that laser adjustment light path focuses on, can vertically incide on Using Image Plate, and under motor #2 drives, hot spot can a circle be another encloses the land inswept on Using Image Plate, forms continuous print scan line.Under the synergy of motor #1 and motor #2, scan line can be realized and travel through whole Using Image Plate;
4th step, is collected by phosphor collection light path, collects the fluorescence of scattering and to go forward side by side line focusing.The fluorescence focused on is sent to the light inlet of electrooptical device;
5th step, carries out clutter filtering by electrooptical device to fluorescence, amplifies useful fluorescence signal, and converts current signal output to;
6th step, by signals collecting control circuit, amplifies the current signal exported through electrooptical device and A/D conversion, forms digitized signal stream.
7th step, by image processing module, and binding site sensor information, in above-mentioned digitized signal stream, carries out that image is just located, image is accurately located and image rotation step, obtains efficient 2-d image information;
8th step, by central control module, encapsulation two-dimensional image information, and by specific network driver block, image is sent to workbench, carry out showing and filing.
Below the first location of the image in above-mentioned flow process is described in detail:
Position detection unit comprises position transducer R and position transducer A;
Described position transducer R is positioned at the CD feeding port place of described image scanning module, whether arrives described CD feeding port for detecting described Using Image Plate;
Described position transducer A is for detecting the position of the laser of described image scanning module transmitting, and described position transducer A is positioned at described image scanning module and is positioned at outside the row region of described Using Image Plate;
Described image is locating module just, for when determining described Using Image Plate and being positioned at pre-starting position, digital signal acquiring and record is started at next line, when determining described laser and arriving described position transducer A, start the digital signal record of current line, when determining described laser and arriving row end position, terminate the digital signal record of current line, when determining described Using Image Plate and being positioned at pre-end position, at next line end number signals collecting and record
Described pre-starting position is between described position transducer R and the plane of scanning motion of described laser, described wish end position is between described laser scanning plane and the piece mouth of described image scanning module, and described row end position is positioned at described image scanning module and lays respectively at the both sides in the row region of described Using Image Plate with described position transducer A.
Be below two specific embodiments of image initial location, be respectively the situation of maximum position transducer and minimum position transducer:
Embodiment one
Lower edges is just located
Image is just located, mainly to the location of Using Image Plate.In order to position Using Image Plate, image transmission module can comprise R, P, Q position transducer shown in lower Fig. 7.
Position transducer R, is positioned at CD feeding port, whether inserts CD feeding port for detecting Using Image Plate; Position transducer P, is positioned at the below of transducer R, the top of laser scanning plane ACDB, and for determining the lower edge of Using Image Plate, instruction Using Image Plate is about to enter scanning area, as the original position of image acquisitions; Position transducer Q, is positioned at the below of transducer R, and also in the below of laser scanning plane, and for determining upper edge when Using Image Plate shifts out scanning area, instruction Using Image Plate is about to shift out scanning area completely, as the end position of image acquisitions.
Above-mentioned said below is a kind of supposition, and namely suppose that conveyer belt is vertically placed in scanning means, Using Image Plate inserts CD feeding port from top to bottom.In any case when Using Image Plate advances, transducer P is in the front of transducer R, and transducer Q is in the front of transducer P.
R, P, Q transducer should use light source and the optical receiver of pairing, and light source is separated placement with receiver, as photoelectric tube etc.Each position transducer can be made up of one or more groups light source and receiver.
Described light source, the light sent should be able to direct projection on optical receiver.Described receiver should be able to export corresponding level state according to whether sensing light.Such as, after the light that light source is not luminous or light source sends is blocked by Using Image Plate, receiver output low level; And when the light direct beam that light source sends is to receiver, receiver exports high level.Vice versa.
Edge, left and right is just located
The schematic diagram of the plane of scanning motion ACDB of Fig. 8 A, 8B reflection, laser scanning line is High Rotation Speed in this plane only.In figure, r is sweep radius, and θ is the scanning angle that Using Image Plate is corresponding.Because the crooked radian of Using Image Plate is limited, therefore r can not be too little, also just determines θ not too large.Laser scanning is described one week, the most of the time is in sky and sweeps state.In order to determine the position of Using Image Plate in every line scanning process, in the plane of scanning motion, also want setting position transducer, to determine original position and the end position of every line scanning valid data.
As shown below, setting position sensors A and B, and arrange laser scanning line and sweep to B by A.The installation site of A, B, through optimal design, must meet the following conditions:
(1) must the plane of scanning motion be positioned at, can be irradiated to by laser scanning line;
(2) sensors A range image plate left side edge, transducer B range image plate right edge are along all having rational distance, and distance can not be excessively far away, can not be blocked by Using Image Plate.This is applicable to the Using Image Plate of all dimensionss.As Fig. 8 B, θ 1>0 should be had, θ 2>0.
Above-mentioned said left side and right side, be a kind of supposition of position, also can oppositely state.In any case, when laser scanning line continues scanning, always before scanning Using Image Plate, first scan sensors A; After scanning Using Image Plate, just can scan transducer B.
A and B is only made up of laser pickoff, can actual induction scan laser hot spot, and exports instruction level, and can be high level, also can be low level.
Laser scanning line High Rotation Speed under the drive of motor #2, often rotate a circle, all can flow serially through position transducer A and B, laser intensity can be responded to by A and B.When through A, start Imagery Data Recording, as the initiating terminal of picturedeep certificate.When through B, stop Imagery Data Recording, as the end of picturedeep certificate.The level signal collection of sensors A, B and laser scanning signal (picturedeep certificate) gather answers stringent synchronization.
The idiographic flow of this embodiment as shown in Figure 9.
Embodiment 2
Lower edges is just located
If the transducer P in above-mentioned Fig. 7 or Q one do not exist, or P and Q does not exist, so namely can calculate in conjunction with the timing of timer the original position and end position that obtain image collection by specific distance relation.As shown in Figure 7, the distance of design attitude transducer R to P is h1, distance to laser scanning plane is h1+h2, distance to Q is h1+h2+h3, and suppose that Using Image Plate is of a size of h × w (long × wide), the speed that Using Image Plate transmits is v, and laser scanning line angular velocity of rotation is ω, then after transducer P senses that Using Image Plate inserts
After the interval t1 time, namely Using Image Plate lower edge should reach the position of position transducer P in theory, now should start image acquisitions.Actual in kinematic error and the existence controlling time delay, be difficult to the time of advent accurately estimate.Described t1 computing formula is:
t1＝h1/v
After the interval t2 time, Using Image Plate lower edge should arrive the plane of scanning motion in theory.Described t2 computing formula is:
t2＝(h1+h2)/v
After the interval t3 time, Using Image Plate upper edge should arrive the plane of scanning motion in theory.Described t3 computing formula is:
t3＝(h1+h2+h)/v
After the interval t4 time, Using Image Plate upper edge should arrive the position at position transducer Q place in theory, now should stop image acquisitions.Described t4 computing formula is:
t4＝(h1+h2+h3+h)/v
Edge, left and right is just located
Transducer B can not be tangible material object, can also be obtained by distance estimations equivalently, as started image line data record when laser scanning line is irradiated to sensors A, as laser scanning line scanning angle θ+θ 1+ θ 2 again, namely after arriving the position of virtual-sensor B, the record of picturedeep certificate can be stopped, completing Primary Location and the collection of a line view data equally.Can be expressed as by the time interval t5 of A to B:
t5＝(θ+θ1+θ2)/ω
Flow chart as indicated by 10
In above-described embodiment 2, its essence is that by means of timer estimates the position whether Using Image Plate or laser reach setting.
By the picturedeep certificate that the first position fixing process of image obtains, through inverted order restructuring, the image array of formation is illustrated in fig. 11 shown below.
This image may include larger white space around effective imaging region EFGH, defines image array JKLM.In real image analytic process, these white spaces are useless, also likely form interference.Meanwhile, the picture size comprising white space is comparatively large, Image Processing and transmission speed.Therefore, be necessary white space all to remove, this relates to image exact localization operation.
Image accurately locates each step comprised shown in Figure 18.
According to order (L1, L2, L3 shown in Figure 12 A, L4, L5 ...), from top to bottom line scanning is carried out to image array JKLM, and line by line signal strength signal intensity is analyzed, judge whether current line has signal to exist, that is: whether there is continuous print, range value departs from the larger picture signal of noise level and there is (Figure 12 B), and the S point as L4 is judged to signal to T point, the U point of L5 is judged to signal to W point, and all the other are noise.
Owing to judging have signal to exist at line number L4, can using L4 as effective image beginning-of-line, i.e. upper edge.
According to shown in Figure 13 order (L1, L2, L3, L4, L5 ...), from down to up line scanning is carried out to image array JKLM, and line by line signal strength signal intensity is analyzed, judge whether current line has picture signal to exist.Rule of judgment be image intensity signal much larger than background noise, the mode by setting threshold finds picture signal border.To find that the first row of picture signal is as the capable end point of effective image, i.e. lower edge.
According to shown in Figure 14 order (L1, L2, L3, L4, L5 ...), by left-to-right, column scan is carried out to image array JKLM, and by column signal strength signal intensity is analyzed, judge whether have signal to exist when prostatitis.The starting point of first row as image column of signal, i.e. left side edge will be found.
According to shown in Figure 15 order (L1, L2, L3, L4, L5 ...), to a left side, column scan is carried out to image array JKLM by the right side, and by column signal strength signal intensity is analyzed, judge whether have signal to exist when prostatitis.The end point of first row as image column of signal, i.e. right edge edge will be found.
Accurately located by image, the image array obtained is J ' K ' L ' M ', is the minimum matrix comprising effective image-region EFGH.As shown in figure 16.
Further, if before searching image signal, to scan line or the smoothing filtering of column signal, be then more conducive to the precision improving image edge detection.
Further, carry out image pixel sampling if having employed when sampling than the much higher frequency of the sample rate required by Nyquist law, then it is more accurate to obtain image edge detection.
Consider that Using Image Plate is not easy to accomplish desirable vertical placement when inserting CD feeding port, the effective image-region EFGH therefore collected is difficult to overlap with above-mentioned pinpoint image array J ' K ' L ' M ', needs to carry out image rotation.
By the coordinate of E, F, G, H point in image array J ' K ' L ' M ', computed image angle of inclination Φ.Adopt general image rotation algorithm, by image clockwise anglec of rotation Φ, thus obtain final image array E ' F ' G ' H '.As shown in figure 17.
Through above-mentioned steps, the latent image of Using Image Plate record can be obtained.
It should be noted that, said system specifically can be applicable in dentistry.
Corresponding said system, the utility model additionally provides a kind of device of image scanning and scan method, and related content can describe see components of system as directed.
Although depict the application by embodiment, those of ordinary skill in the art know, the application has many distortion and change and do not depart from the spirit of the application, and the claim appended by wishing comprises these distortion and change and do not depart from the spirit of the application.
Claims (11)
1. an image-scanning system, comprise Using Image Plate and scan to obtain the device of image scanning of image to described Using Image Plate, it is characterized in that, described device of image scanning comprises: central control module and the Using Image Plate transmission module, image scanning module and the image processing module that are all electrically connected with described central control module;
Described Using Image Plate transmission module comprises position detection unit and Using Image Plate gear unit, and described image processing module comprises image just locating module, the accurate locating module of image and image rotation module;
Described position detection unit is used for carrying out detecting obtaining primary importance testing result and carrying out detection to the laser position of described image scanning module to the position of described Using Image Plate obtaining second place testing result;
Described Using Image Plate gear unit is used for determining after described Using Image Plate enters the CD feeding port of described image scanning module according to described primary importance testing result driving described Using Image Plate to move to the outlet of described image scanning module;
Described central control module is used for determining when described Using Image Plate enters the CD feeding port of described image scanning module according to described primary importance testing result controlling described image scanning module unlatching image scanning;
Described image scanning module is used for utilizing laser rotary mode to carry out line scanning to described Using Image Plate, obtains often capable digital signal streams and send described digital signal by described central control module to flow to described image processing module;
Described image just locating module is used for carrying out image initial location according to described primary importance testing result, described second place testing result and described digital signal streams, generates initial pictures matrix;
The accurate locating module of described image for judge described initial pictures matrix often row, often arrange and whether there is signal and generate exact image matrix according to judged result, described exact image matrix is the minimum matrix comprising effective image-region;
Described image rotation module is used for according to the apex coordinate computed image angle of inclination Φ of described exact image matrix, if Φ ≠ 0, then by image rotation algorithm by image clockwise or rotated counterclockwise by angle Φ to generate final image matrix.
2. image-scanning system as claimed in claim 1, it is characterized in that, described position detection unit comprises position transducer R and position transducer A;
Described position transducer R is positioned at the CD feeding port place of described image scanning module, whether arrives described CD feeding port for detecting described Using Image Plate;
Described position transducer A is for detecting the position of the laser of described image scanning module transmitting, and described position transducer A is positioned at described image scanning module and is positioned at outside the row region of described Using Image Plate;
Described image is locating module just, for when determining described Using Image Plate and arriving pre-starting position, digital signal acquiring and record is started at next line, when determining described laser and arriving described position transducer A, start the digital signal record of current line, when determining described laser and arriving row end position, terminate the digital signal record of current line, when determining described Using Image Plate and arriving pre-end position, at next line end number signals collecting and record
Described pre-starting position be described position transducer R position or between described position transducer R and the plane of scanning motion of described laser, described pre-end position is between described laser scanning plane and the piece mouth of described image scanning module, described row end position is positioned at described image scanning module and lays respectively at the both sides in the row region of described Using Image Plate with described position transducer A and all do not blocked by described Using Image Plate, and described laser first scans position transducer A when execution one line scanning scans row end position again.
3. image-scanning system as claimed in claim 2, it is characterized in that, described position detection unit also comprises position transducer P, Q, B;
Wherein said position transducer P is positioned at described pre-starting position place, and described position transducer Q is positioned at described pre-end position place, and described position transducer B is positioned at described row end position place.
4. image-scanning system as claimed in claim 3, it is characterized in that, described position transducer R, P, Q are all made up of at least one group of light source and receiver, and described position transducer A, B are made up of laser pickoff.
5. image-scanning system as claimed in claim 2, is characterized in that, described device of image scanning also comprises at least one timer for timing; The time length of described timing regulates according to Using Image Plate translational speed and/or laser scanning speed;
Described image is locating module just, for judging according to the timing results of described timer whether described Using Image Plate arrives described pre-starting position, in advance end position and judge whether described laser arrives row end position.
6. image-scanning system as claimed in claim 1, is characterized in that, described device of image scanning also comprises image and wipes module, for wiping the latent image from described image scanning module Using Image Plate out.
7. image-scanning system as claimed in claim 6, is characterized in that, the LED light source of described image erasing module uses ruddiness, and optical wavelength peak value is 600nm-700nm.
8. image-scanning system as claimed in claim 1, it is characterized in that, described Using Image Plate is flexible Using Image Plate, and described Using Image Plate gear unit comprises for making described flexible Using Image Plate curve the regulating wheel of circular arc by extruding, and described laser is identical with the distance of a line each position to described Using Image Plate.
9. image-scanning system as claimed in claim 1, it is characterized in that, described image-scanning system also comprises computer, for receiving the image that described device of image scanning exports, and according to user's request by described graphical analysis, preservation or display.
10. image-scanning system as claimed in claim 1, it is characterized in that, described image-scanning system is applied in dentistry.
11. 1 kinds of device of image scanning as described in any one of claim 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520976883.XU CN205123882U (en) | 2015-12-01 | 2015-12-01 | Image scanning system and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520976883.XU CN205123882U (en) | 2015-12-01 | 2015-12-01 | Image scanning system and device |
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| Publication Number | Publication Date |
|---|---|
| CN205123882U true CN205123882U (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520976883.XU Withdrawn - After Issue CN205123882U (en) | 2015-12-01 | 2015-12-01 | Image scanning system and device |
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| CN (1) | CN205123882U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105430300A (en) * | 2015-12-01 | 2016-03-23 | 天逸瑞狮（苏州）口腔医疗科技股份有限公司 | Image scanning system, device and method |
| CN105997133A (en) * | 2016-05-04 | 2016-10-12 | 上海汉缔医疗设备有限公司 | Oral cavity computed radiography (CR) scanning system and oral cavity CR scanning method |
-
2015
- 2015-12-01 CN CN201520976883.XU patent/CN205123882U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105430300A (en) * | 2015-12-01 | 2016-03-23 | 天逸瑞狮（苏州）口腔医疗科技股份有限公司 | Image scanning system, device and method |
| CN105430300B (en) * | 2015-12-01 | 2018-08-21 | 天逸瑞狮（苏州）口腔医疗科技股份有限公司 | A kind of image-scanning system, device and method |
| CN105997133A (en) * | 2016-05-04 | 2016-10-12 | 上海汉缔医疗设备有限公司 | Oral cavity computed radiography (CR) scanning system and oral cavity CR scanning method |
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