CN106551701A - A kind of wireless flat detector and its method for correcting image - Google Patents
A kind of wireless flat detector and its method for correcting image Download PDFInfo
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Abstract
The present invention provides a kind of wireless flat detector and its method for correcting image, wherein, wireless flat detector includes：Flat board detecting module, for X-ray energy is converted into the signal of telecommunication, generates X ray picture；Image correction module, for the image rectification of the X ray picture；Wherein, described image correction module is embedded on the flat board detecting module.When wireless flat detector is in without correction work pattern, X ray picture is transferred to external equipment to be processed by SDK by image correction module；In front correction work pattern, post-equalization mode of operation and intelligent synchronization mode of operation when, then directly by gain calibration, maximum gain correction, defect correction, ghost correction and microseism correction image rectification is carried out to X ray picture.Image correction module is changed to be completely embedded into wireless flat detector by the present invention from traditional DR process, is substantially increased the picture quality that wireless flat detector obtains image, and is reduced the integrated technical costss for using of user.
Description
Technical field
The present invention relates to X-ray detector and its image processing method, more particularly to a kind of to have embedded image calibration function
Wireless flat detector and its method for correcting image.
Background technology
Nineteen ninety-five, RSNA are proposed First flat panel detector FPD (Flat Panel Detector) equipment, and which is that one kind will
X-ray energy is converted into the signal of telecommunication, produces the detector of radioscopic image.In recent years, as flat board Detection Techniques are obtained
Tremendous development, the quality of image of flat panel detector have obtained significantly improving, service life also superior to image intensifier, from
And it is more economical practical.Meanwhile, the technology of flat panel detector, cost and Maturity are gradually approved by market, and in related neck
Domain is used widely.
At present, flat panel detector is widely used in optical medical diagnosis, and X-ray is projected on flat panel detector after through human body,
By scan picture, directly obtain image digital signal, be then transferred to work station, work station based on computer,
Applied Computer Techniques are by digital image acquisition, process, transmission and show over the display, observe image for medical worker, enter
Row medical diagnosiss.
But, accordingly, market is grown with each passing day to the demand of high-quality high performance flat detector so as to image procossing
Improve particularly important in the development of flat panel detector.Therefore, how to carry out outstanding image quality correction becomes wireless flat
The research direction of detector, being reached with this makes wireless flat detector obtain high-quality image.
The content of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of wireless flat detector and its image calibration
Correction method, for solving the problems, such as that wireless flat detector itself cannot carry out image rectification in prior art.
For achieving the above object and other related purposes, the present invention provides a kind of wireless flat detector, the wireless flat detection
Device includes：Flat board detecting module, for X-ray energy is converted into the signal of telecommunication, generates X ray picture；Image calibration holotype
Block, for the image rectification of the X ray picture；Wherein, described image correction module is embedded on the flat board detecting module.
Alternatively, when the wireless flat detector is in without correction work pattern, described image correction module passes through SDK by institute
Stating X ray picture transfers to external equipment to be processed.
Alternatively, the wireless flat detector is in front correction work pattern, post-equalization mode of operation and intelligent synchronization Working mould
During formula, directly corrected to the X ray picture by gain calibration, maximum gain correction, defect correction, ghost correction and microseism
Carry out image rectification.
The invention also discloses a kind of method for correcting image of wireless flat detector, the wireless flat detector is using embedded
Image correction module, described image bearing calibration includes：Without the image rectification under correction work pattern, front correction work pattern
Under image rectification, the image rectification under post-equalization mode of operation and the image rectification under intelligent synchronization mode of operation；Wherein,
Without the image rectification under correction work pattern：The X ray picture of collection is directly transferred to by the wireless flat detector by SDK
External equipment is processed；The image rectification under image rectification, post-equalization mode of operation and intelligence under front correction work pattern
Image rectification under synchronous working pattern：The wireless flat detector is directly corrected by described image correction module.
Alternatively, the image rectification under the front correction work pattern includes：Step S11, calculates the intermediate value of the X ray picture；
Step S12, selects and generates precorrection template according to the intermediate value of the X ray picture；Wherein, the precorrection template includes original
Beginning precorrection template and dynamic precorrection template；Step S13, according to the precorrection template, carries out gain calibration, most successively
Large gain correction, defect correction and ghost correction.
Alternatively, the original precorrection template is the details in a play not acted out on stage, but told through dialogues figure gathered when the wireless flat detector is started shooting；The dynamic is pre-
Calibration template is to select in accordance with the following steps to generate：Collection postpones three details in a play not acted out on stage, but told through dialogues figures for 0.5 second, 2 seconds and 5 seconds respectively successively；
Three details in a play not acted out on stage, but told through dialogues figures to gathering carry out microseism correction, generate once fitting K/B coefficient；Institute is generated according to the delay of current bright field figure
State dynamic precorrection template.
Alternatively, the image rectification under the post-equalization mode of operation includes：Step S21, gathers a bright field figure successively respectively
With a details in a play not acted out on stage, but told through dialogues figure, and to gather details in a play not acted out on stage, but told through dialogues figure carry out microseism correction；Step S22, using the details in a play not acted out on stage, but told through dialogues figure pair through microseism correction
Bright field figure carries out post-equalization；Step S23, then gain calibration, maximum are carried out successively to the bright field figure after the process of step S22
The correction of gain calibration, defect correction and ghost.
Alternatively, the image rectification under the intelligent synchronization mode of operation includes：Step S31, details in a play not acted out on stage, but told through dialogues figure before gathering respectively successively,
Bright field figure and rear details in a play not acted out on stage, but told through dialogues figure；Step S32, the difference of details in a play not acted out on stage, but told through dialogues figure and front details in a play not acted out on stage, but told through dialogues figure is used as microseism criterion later, and to rear dark
Field figure carries out microseism correction；Step S33, using the difference of bright field figure and rear details in a play not acted out on stage, but told through dialogues figure as original image, school after then carrying out successively
Just, gain calibration, maximum gain correction, defect correction and ghost correction.
Alternatively, dynamic ghost calibration template to be generated before ghost correction, including：Two details in a play not acted out on stage, but told through dialogues postponed as 1 second are gathered respectively
Figure；Two details in a play not acted out on stage, but told through dialogues figures to gathering carry out microseism correction；Post-equalization, and post-equalization are carried out to two details in a play not acted out on stage, but told through dialogues figures after microseism correction
Result be the ghost calibration template.
Alternatively, microseism correction includes：Gather details in a play not acted out on stage, but told through dialogues figure to be determined and correction details in a play not acted out on stage, but told through dialogues figure；To correcting school after details in a play not acted out on stage, but told through dialogues figure is carried out successively
Just and defect correction, and the result of post-equalization and defect correction is the microseism calibration template；Microseism is carried out to details in a play not acted out on stage, but told through dialogues figure to be determined
Judge：If so, then the X ray picture is carried out to export after microseism correction according to the microseism calibration template；Otherwise, then directly
Export the X ray picture.
As described above, the wireless flat detector and its method for correcting image of the present invention, by image correction module from traditional numeral
Imaging (DR：Digital Radiography) process and be changed to be completely embedded into wireless flat detector, it is wireless flat ensure that
On the premise of the portability of partitioned detector, the direct correction process of the image that wireless flat detector is gathered to itself is realized, greatly
The picture quality that wireless flat detector obtains image is improve greatly, the integrated technical costss for using of user are reduced；Also, by
Process can be directly corrected to image in wireless flat detection, it is not necessary to which, by external equipment, this is also greatly lowered wirelessly
Restriction of the flat panel detector to use environment.
Description of the drawings
Fig. 1 is shown as a kind of structural representation of wireless flat detector disclosed in the embodiment of the present invention.
Fig. 2 is shown as image rectification of a kind of wireless flat detector under front correction work pattern disclosed in the embodiment of the present invention
Schematic flow sheet.
Fig. 3 is shown as a kind of wireless flat detector disclosed in the embodiment of the present invention under front correction work pattern, dynamic precorrection
The product process schematic diagram of template.
Fig. 4 is shown as image rectification of a kind of wireless flat detector under post-equalization mode of operation disclosed in the embodiment of the present invention
Schematic flow sheet.
Fig. 5 is shown as image rectification of a kind of wireless flat detector under intelligent synchronization mode of operation disclosed in the embodiment of the present invention
Schematic flow sheet.
Fig. 6 is shown as in a kind of method for correcting image disclosed in the embodiment of the present invention, the product process schematic diagram of ghost calibration template.
Fig. 7 is shown as in a kind of method for correcting image disclosed in the embodiment of the present invention, the schematic flow sheet of microseism correction.
Component label instructions
100 wireless flat detectors
110 flat board detecting modules
120 image correction modules
S11～S13 steps
S21～S23 steps
S31～S33 steps
Specific embodiment
Embodiments of the present invention are illustrated below by way of specific instantiation, those skilled in the art can be by disclosed by this specification
Content understand easily the present invention other advantages and effect.The present invention can also be added by specific embodiments different in addition
To implement or apply, the every details in this specification can also be based on different viewpoints and application, in the essence without departing from the present invention
Various modifications and changes are carried out under god.It should be noted that, the feature in the case where not conflicting, in following examples and embodiment
Can be mutually combined.
Refer to accompanying drawing.It should be noted that the diagram provided in following examples only illustrates the base of the present invention in a schematic way
This conception, only shows the component relevant with the present invention then rather than according to component count during actual enforcement, shape and chi in schema
Very little drafting, which is actual when the implementing kenel of each component, quantity and ratio can be a kind of random change, and its assembly layout kenel
It is likely to increasingly complex.
Embodiment 1
Present embodiment discloses a kind of wireless flat detector, which is embedded in image rectification technology inside wireless flat detector.
As shown in figure 1, wireless flat detector 100 includes disclosed in the present embodiment：
Flat board detecting module 110, for X-ray energy is converted into the signal of telecommunication, generates X ray picture.Certainly, it is described
Flat board detecting module 110 can be also used for gathering details in a play not acted out on stage, but told through dialogues figure and bright field figure.Wherein, details in a play not acted out on stage, but told through dialogues figure be without scanned object, do not open
The image gathered in the case of opening X source；Bright field figure is the image gathered after exposure in the case where X source is opened.
Image correction module 120, for completing the image rectification of the X ray picture；Wherein, image correction module 120 is embedding
Enter on the flat board detecting module 110.
Wherein, the image correction module 120 of wireless flat detector 100 disclosed in the present embodiment carries out image rectification and is divided into four kinds
Mode of operation：Without correction (no offset) mode of operation, front correction (pre offset) mode of operation, post-equalization (post offset)
Mode of operation and intelligent synchronization (Isync+) mode of operation.
Under without correction work pattern, the X ray picture that flat board detecting module 110 is gathered by image correction module 120 passes through SDK
(Software Development Kit, SDK) transfers to external equipment to be processed.Wherein, external equipment bag
Include but be not limited to PC.
In front correction work pattern, post-equalization mode of operation and intelligent synchronization mode of operation, image correction module 120 is by more
Planting method for correcting image carries out image rectification to X ray picture, that is to say, that various method for correcting image are all embedded in wireless flat
In partitioned detector..Wherein, method for correcting image includes but is not limited to gain calibration (Gain Offset), maximum gain correction
(Most Gain Offset), defect correction (Defect Offset), ghost correction (Ghost Offset) and microseism correction
(Microphony Offset).Further, since method for correcting image (gain calibration, maximum gain correction, defect correction,
Ghost is corrected and microseism is corrected) it has been highly developed image rectification technology, will not be described here.
Additionally, the technology proposed by the invention with solution is not asked in the present embodiment by the innovative part in order to project the present invention
The less close module of topic relation is introduced, but there are no other modules during this is not intended that the present embodiment.
Embodiment 2
Present embodiment discloses a kind of method for correcting image of wireless flat detector, wherein, wireless flat detector such as embodiment
Shown in 1, including image correction module, image correction module is embedded in wireless flat detector.
The method for correcting image of the wireless flat detector of the present embodiment is included but is not limited to without the image calibration under correction work pattern
Just, under front correction work pattern under image rectification, image rectification and intelligent synchronization mode of operation under post-equalization mode of operation
Image rectification.
Under without correction work pattern, the X ray picture of collection is directly transferred to external equipment by SDK by wireless flat detector
It is corrected process.
Under front correction work pattern, as shown in Fig. 2 the method for correcting image of wireless flat detector includes：
Step S11, calculates the intermediate value of the X ray picture of collection；
Step S12, according to the intermediate value of X image figures, selects and generates precorrection module；
Step S13, according to precorrection template, carries out gain calibration, maximum gain correction, defect correction and ghost correction successively.
In step s 12, the correction module for selecting and generating includes original precorrection module and dynamic precorrection module.
Wherein, original precorrection module is the details in a play not acted out on stage, but told through dialogues figure that wireless flat detector is gathered in start.
As shown in figure 3, dynamic precorrection template is then to select in accordance with the following steps to generate：
Collection postpones three details in a play not acted out on stage, but told through dialogues figures for 0.5 second, 2 seconds and 5 seconds respectively successively；
Three details in a play not acted out on stage, but told through dialogues figures to gathering carry out microseism correction, generate once fitting K/B coefficient；Wherein, once fitting refers to one
The fitting of first linear function, K/B coefficients are the coefficient of linear equation with one unknown, such as Y=KX+B；
Corresponding dynamic precorrection template is generated according to the delay of current bright field figure.
Certainly, the generating mode of the dynamic precorrection template of the present embodiment is so as to generate using the once fitting under front correction mode
Dynamic precorrection template, which can also generate dynamic precorrection template using the conic fitting for temperature, and here is no longer
Repeat.
Under post-equalization mode of operation, as shown in figure 4, the method for correcting image of wireless flat detector includes：
Step S21, gathers a bright field figure and a details in a play not acted out on stage, but told through dialogues figure successively respectively, and the details in a play not acted out on stage, but told through dialogues figure to gathering carries out microseism correction；
Step S22, carries out post-equalization to bright field figure using the details in a play not acted out on stage, but told through dialogues figure corrected through microseism；
Step S23, then carry out gain calibration, maximum gain correction, defect to the bright field figure after the process of step S22 successively
Correction and ghost are corrected.
Under intelligent synchronization mode of operation, as shown in figure 5, the method for correcting image of wireless flat detector includes：
Step S31, gathers front details in a play not acted out on stage, but told through dialogues figure (Pre-Dark Image), bright field figure (Light Image) and rear details in a play not acted out on stage, but told through dialogues figure successively respectively
(Post-Dark Image)；Wherein, front details in a play not acted out on stage, but told through dialogues figure is to gather the details in a play not acted out on stage, but told through dialogues figure gathered before bright field figure, and rear details in a play not acted out on stage, but told through dialogues figure is that collection is bright
The details in a play not acted out on stage, but told through dialogues figure gathered after the figure of field.
Step S32, the difference (Preview Image) of details in a play not acted out on stage, but told through dialogues figure and front details in a play not acted out on stage, but told through dialogues figure is used as microseism criterion later, to rear dark
Field figure carries out microseism correction；
Step S33, using the difference of bright field figure and rear details in a play not acted out on stage, but told through dialogues figure as original image (Full Image), carries out post-equalization successively, increases
Benefit correction, maximum gain correction, defect correction and ghost correction.
Method for correcting image under the past correction work pattern, post-equalization mode of operation and intelligent synchronization mode of operation is not difficult to find out,
Wireless flat detector carries out being required for carrying out gain calibration, maximum gain correction, defect correction, ghost correction during image rectification
And microseism correction.Gain calibration, maximum gain correction, defect correction, ghost correction and microseism correction be very into
Ripe image rectification technology, will not be described here.
Additionally, ghost correction needs to be corrected under ghost calibration template；Microseism correction needs the microseism correction generated in dynamic
It is corrected under template.
As shown in fig. 6, ghost calibration template is generated in accordance with the following steps：
Two details in a play not acted out on stage, but told through dialogues figures postponed as 1 second are gathered respectively；
Two details in a play not acted out on stage, but told through dialogues figures to gathering carry out microseism correction；
Two details in a play not acted out on stage, but told through dialogues figures after microseism correction are carried out with post-equalization, the result of post-equalization is ghost calibration template.
As shown in fig. 7, microseism correction is carried out in accordance with the following steps：
Gather details in a play not acted out on stage, but told through dialogues figure to be determined and correction details in a play not acted out on stage, but told through dialogues figure；Wherein, details in a play not acted out on stage, but told through dialogues figure to be determined is the X ray picture for needing to carry out microseism correction
Details in a play not acted out on stage, but told through dialogues figure；Correction details in a play not acted out on stage, but told through dialogues figure is then the details in a play not acted out on stage, but told through dialogues figure for being exclusively used in generating microseism calibration template.
Post-equalization and defect correction are carried out successively to correcting details in a play not acted out on stage, but told through dialogues figure, and the result of post-equalization and defect correction is microseism calibration template；
Microseism judgement is carried out to details in a play not acted out on stage, but told through dialogues figure to be determined：
If so, then X ray picture is carried out to export after microseism correction according to microseism calibration template；
Otherwise, then microseism correction is not carried out to X ray picture, directly exports X ray picture.
Divide the step of various methods above, be intended merely to describe clear, a step can be merged into when realizing or to some
Step is split, and is decomposed into multiple steps, as long as comprising identical logical relation, all in the protection domain of this patent；It is right
Add inessential modification in algorithm or in flow process or introduce inessential design, but do not change its algorithm and flow process
Core design is all in the protection domain of the patent.
Further, it is seen that, the present embodiment is embodiment of the method corresponding to those in the first embodiment, and the present embodiment can be with the
One embodiment is worked in coordination enforcement.The relevant technical details mentioned in first embodiment are still effective in the present embodiment, in order to subtract
It is few to repeat, repeat no more here.Correspondingly, the relevant technical details mentioned in the present embodiment are also applicable in first embodiment.
In sum, wireless flat detector of the invention and its method for correcting image, by image correction module from traditional numeral
Imaging (DR：Digital Radiography) process and be changed to be completely embedded into wireless flat detector, it is wireless flat ensure that
On the premise of the portability of partitioned detector, the direct correction process of the image that wireless flat detector is gathered to itself is realized, greatly
The picture quality that wireless flat detector obtains image is improve greatly, the integrated technical costss for using of user are reduced；Also, by
Process can be directly corrected to image in wireless flat detection, it is not necessary to which, by external equipment, this is also greatly lowered wirelessly
Restriction of the flat panel detector to use environment.So, the present invention effectively overcomes various shortcoming of the prior art and has height and produce
Industry value.
The principle and its effect of above-described embodiment only illustrative present invention, it is of the invention not for limiting.It is any to be familiar with this skill
The personage of art all can carry out modifications and changes to above-described embodiment under the spirit and the scope without prejudice to the present invention.Therefore, such as
Those of ordinary skill in the art completed under without departing from disclosed spirit and technological thought all etc.
Effect modifications and changes, should be covered by the claim of the present invention.
Claims (10)
1. a kind of wireless flat detector, it is characterised in that the wireless flat detector includes：
Flat board detecting module, for X-ray energy is converted into the signal of telecommunication, generates X ray picture；
Image correction module, for the image rectification of the X ray picture；
Wherein, described image correction module is embedded on the flat board detecting module.
2. wireless flat detector according to claim 1, it is characterised in that：The wireless flat detector is in without correction work
During operation mode, the X ray picture is transferred to external equipment to be processed by SDK by described image correction module.
3. wireless flat detector according to claim 1, it is characterised in that：The wireless flat detector is in front correction work
When operation mode, post-equalization mode of operation and intelligent synchronization mode of operation, directly correct, lack by gain calibration, maximum gain
Falling into correction, ghost correction and microseism correction carries out image rectification to the X ray picture.
4. a kind of method for correcting image of wireless flat detector, the wireless flat detector adopt Embedded image correction module,
It is characterized in that：Described image bearing calibration includes：Without under the image rectification under correction work pattern, front correction work pattern
Image rectification, the image rectification under post-equalization mode of operation and the image rectification under intelligent synchronization mode of operation；Wherein,
Without the image rectification under correction work pattern：The wireless flat detector is by SDK directly by the X-ray of collection
Figure transfers to external equipment to be processed；
The image rectification under image rectification, post-equalization mode of operation and intelligent synchronization mode of operation under front correction work pattern
Under image rectification：The wireless flat detector is directly corrected by described image correction module.
5. method for correcting image according to claim 4, it is characterised in that：Image calibration positive closure under the front correction work pattern
Include：
Step S11, calculates the intermediate value of the X ray picture；
Step S12, selects and generates precorrection template according to the intermediate value of the X ray picture；Wherein, the precorrection template
Including original precorrection template and dynamic precorrection template；
Step S13, according to the precorrection template, carries out gain calibration, maximum gain correction, defect correction and ghost successively
Shadow is corrected.
6. method for correcting image according to claim 5, it is characterised in that：The original precorrection template is the wireless flat
The details in a play not acted out on stage, but told through dialogues figure that detector is gathered when starting shooting；
The dynamic precorrection template is to select in accordance with the following steps to generate：
Collection postpones three details in a play not acted out on stage, but told through dialogues figures for 0.5 second, 2 seconds and 5 seconds respectively successively；
Three details in a play not acted out on stage, but told through dialogues figures to gathering carry out microseism correction, generate once fitting K/B coefficient；
The dynamic precorrection template is generated according to the delay of current bright field figure.
7. method for correcting image according to claim 4, it is characterised in that：Image calibration positive closure under the post-equalization mode of operation
Include：
Step S21, gathers a bright field figure and a details in a play not acted out on stage, but told through dialogues figure successively respectively, and the details in a play not acted out on stage, but told through dialogues figure to gathering carries out microseism correction；
Step S22, carries out post-equalization to bright field figure using the details in a play not acted out on stage, but told through dialogues figure corrected through microseism；
Step S23, then carry out gain calibration, maximum gain correction to the bright field figure after the process of step S22 successively, lack
Fall into correction and ghost is corrected.
8. method for correcting image according to claim 4, it is characterised in that：Image rectification under the intelligent synchronization mode of operation
Including：
Step S31, gathers front details in a play not acted out on stage, but told through dialogues figure, bright field figure and rear details in a play not acted out on stage, but told through dialogues figure successively respectively；
Step S32, the difference of details in a play not acted out on stage, but told through dialogues figure and front details in a play not acted out on stage, but told through dialogues figure is used as microseism criterion later, and carries out microseism to rear details in a play not acted out on stage, but told through dialogues figure
Correction；
Step S33, using the difference of bright field figure and rear details in a play not acted out on stage, but told through dialogues figure as original image, then carry out successively post-equalization, gain calibration,
Maximum gain correction, defect correction and ghost correction.
9. the method for correcting image according to any one in claim 5-8, it is characterised in that：Will dynamic generation before ghost correction
Ghost calibration template, including：
Two details in a play not acted out on stage, but told through dialogues figures postponed as 1 second are gathered respectively；
Two details in a play not acted out on stage, but told through dialogues figures to gathering carry out microseism correction；
Two details in a play not acted out on stage, but told through dialogues figures after microseism correction are carried out with post-equalization, and the result of post-equalization is the ghost calibration template.
10. the method for correcting image according to any one in claim 6-8, it is characterised in that：Microseism correction includes：
Gather details in a play not acted out on stage, but told through dialogues figure to be determined and correction details in a play not acted out on stage, but told through dialogues figure；
Post-equalization and defect correction are carried out successively to correcting details in a play not acted out on stage, but told through dialogues figure, and the result of post-equalization and defect correction is the microseism school
Positive template；
Microseism judgement is carried out to details in a play not acted out on stage, but told through dialogues figure to be determined：If so, then the X ray picture is entered according to the microseism calibration template
Export after row microseism correction；Otherwise, then directly export the X ray picture.
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| CN108056785A (en) * | 2017-12-04 | 2018-05-22 | 上海奕瑞光电子科技股份有限公司 | A kind of update method of flat panel detector gain calibration template |
| CN110426402A (en) * | 2019-08-09 | 2019-11-08 | 北京万东医疗科技股份有限公司 | A kind of data processing equipment, flat panel detector, system and data processing method |
| CN111476728A (en) * | 2020-03-26 | 2020-07-31 | 上海奕瑞光电子科技股份有限公司 | Image correction method and image correction triggering method |
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