CN202069600U - Double-energy X-ray human storage inspection device - Google Patents
Double-energy X-ray human storage inspection device Download PDFInfo
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- CN202069600U CN202069600U CN2010205874837U CN201020587483U CN202069600U CN 202069600 U CN202069600 U CN 202069600U CN 2010205874837 U CN2010205874837 U CN 2010205874837U CN 201020587483 U CN201020587483 U CN 201020587483U CN 202069600 U CN202069600 U CN 202069600U
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Abstract
A double-energy X-ray human storage inspection device comprises an X-ray source, an X-ray collimation component, an X-ray double-energy detector, an inspection channel, a human transfer device, a control desk, a control crib, a computer, an image acquisition system and an image process and control system. The double-energy detector comprises a low-energy detector, a filter sheet and a high-energy detector which are mounted in turn. The double-energy detector is mounted in the detection channel and used for detecting high, low energy X-ray penetrating through the human to be detected and changing the high, low energy X-ray into the corresponding electric signal and transferring the signal to the image process and control system. The signal is processed into the digital signal capable of being recognized and processed by the computer and representing the detected object images of different material characters using different color and the digital signal is processed by the computer to be displayed on a reel at the real time. The equivalent atomic number information of the detected object is obtained by the high, low energy data detected by the inspection device, so as to distinguish the organic matter, the inorganic matter and the mixture, thus the interpretation efficiency is high and the effect is good.
Description
Technical field
This utility model relates to digital image safety inspection technical field, relates in particular to a kind of double energy X-ray human body Tibetan quality testing and looks into equipment.
Background technology
In recent years, criminal activities such as traffic in drugs, terrorism are more and more rampant, the serious harm social safety, and, occur with the form that is hidden in human body more and more.That is, carry out drug smuggling, the attack of terrorism by human body.And this criminal activity makes that threat and danger are more hidden, and therefore, severe situation has also proposed strict more requirement to the human body safety inspection technology.
At present, have only X ray transmission imaging technology can satisfy simultaneously being hidden in the human body, and be attached to the requirement that the outer contrabands such as drugs, explosive, metal and nonmetal weapon of human body are checked.Traditional X ray transmission human body safety inspection equipment is monoergic X-ray examination system mostly, and it comprises a radiographic source, a cover detector and a sets of data acquisition system.In checking process, the X ray transmission signal of radiographic source outgoing receives through being detected device behind the checking matter, has only half-tone information and contour of object information through handling the image that forms.Aspect the image interpretation method, owing to check that object is a human body, the integral image gray scale is on the low side, grey scale change a little less than, and existing interpretation method relies on the shape and the combination of multiple normal image treatment technology of object itself mostly: such as adjusting brightness of image, contrast, size, improve image edge information etc., by observing the gray-level and the edge contour characteristic of object, distinguish wherein suspicious object.Therefore, interpretation efficient is not high relatively, and interpretation effect and operator's experience are closely related.
The utility model content
The technical problems to be solved in the utility model provides a kind of interpretation efficient height, effective dual energy X ray human body is hidden quality testing and looked into equipment.
Goal of the invention of the present utility model is achieved through the following technical solutions:
A kind of double energy X-ray human body is hidden quality testing and is looked into equipment, be used to check that tested personnel hide thing, it comprises x-ray source, X ray collimating components, X ray dual intensity detector, check passage, place tested personnel's human body transporter, control station, control subrack, with the computer that described control subrack links to each other, the image capturing system and Flame Image Process and the control system that be arranged in the described control subrack, are connected with X ray dual intensity detector.Wherein: described x-ray source is high-order to be placed, and aims at tested personnel's abdominal part, is used for the outgoing X ray.Described control station sends control instruction.Described control subrack is connected with control station, is used to receive described control instruction, the work of control x-ray source, human body transporter.Described X ray dual intensity detector, comprise the mental retardation detector that is used to receive low energy X ray that order is provided with, be used to filter the filter disc of low energy X ray, and the high energy detector that is used to receive sigmatron, be installed in the described inspection passage, be used to survey the sigmatron that penetrates detected human body, low energy X ray, and convert the corresponding signal of telecommunication to, be sent to Flame Image Process and control system, be processed into described computer and can discern processing, represent the digital signal of the analyte image of dissimilar material properties with different colours, and by computer to this digital signal handle the back in real time spool show.
Double energy X-ray human body of the present utility model is hidden quality testing and is looked into equipment, by the detected high and low energy detection data of X ray dual intensity detector, obtain the equivalent atom ordinal number information of checking matter, utilize this information can distinguish Organic substance, inorganic matter and mixture, and when showing, compose with different colours, the accurate interpretation of operator of being more convenient for, interpretation efficient height, effective.
Description of drawings
In order to be easy to explanation, this utility model is done to describe in detail by following preferred embodiment and accompanying drawing.
Fig. 1 hides the planar structure sketch map that quality testing is looked into equipment for this utility model first embodiment double energy X-ray human body.
Fig. 2 hides the planar structure sketch map that quality testing is looked into equipment for this utility model second embodiment double energy X-ray human body.
Fig. 3 hides the planar structure sketch map that quality testing is looked into equipment for this utility model the 3rd embodiment double energy X-ray human body.
Fig. 4 is the flow chart of this utility model image processing method.
Fig. 5 is the refinement flow chart of step S2 among this utility model Fig. 4.
Fig. 6 is the refinement flow chart of step S3 among this utility model Fig. 4.
The specific embodiment
Figure 1 shows that this utility model first embodiment double energy X-ray human body hides the planar structure sketch map that quality testing is looked into equipment, it is used to check that tested personnel hide thing, comprise x-ray source 4, X ray collimating components 5, X ray dual intensity detector 6, check passage 7, place tested personnel's human body transporter 8, control station 9, fan part 1, control subrack 2, with the computer 3 that the control subrack links to each other, the image capturing system and Flame Image Process and the control system that be arranged in the control subrack 2, are connected with X ray dual intensity detector 6.
X ray dual intensity detector 6 is installed in and checks in the passage 7, is used to survey the sigmatron, the low energy X ray that penetrate detected human body.This X ray dual intensity detector 6 comprises the mental retardation detector (not shown) that is used to receive low energy X ray that order is provided with, be used to filter the filter disc (not shown) of low energy X ray, and the high energy detector (not shown) that is used to receive sigmatron.After being X ray process checking matter (tested personnel), transmission signal receives through the mental retardation detector earlier, passes through the intermediary filter disc of high mental retardation detector again, is all received by high energy detector at last.Its advantage is: utilize the equivalent atom ordinal number information that high and low energy detection data can obtain checking matter that detects, utilize this information can distinguish Organic substance, inorganic matter and mixture, and when showing, compose with different colours the accurate interpretation of the operator that are more convenient for.
Check that passage 7 adopts the door case type structures, in the specific embodiment, X ray dual intensity detector 6 is mounted in the doorframe, and its quantity is a plurality of, and the row that is arranged in a straight line, L is capable or C is capable.Again, X ray dual intensity detector 6 array installation directions are identical with the covering of the fan direction of X ray, and are positioned at the position of X ray covering of the fan vertical irradiation.
Flame Image Process links to each other with X ray dual intensity detector 6 with the control system front end, and the rear end sends to Flame Image Process and control signal in the computer 3, and the X ray dual intensity signal of gathering is handled, and uses less than the analyte image with the color showing dissimilar material properties.Specifically: X ray dual intensity detector 6 is used to survey sigmatron, the low energy X ray that penetrates detected human body, and convert the corresponding signal of telecommunication to, be sent to Flame Image Process and control system, be processed into described computer 3 by Flame Image Process and control system and can discern digital signal processing, represent the analyte image of dissimilar material properties with different colours, and by 3 pairs of these digital signals of computer handle the back in real time spool show that the display at control station 9 shows at last.
The work process that this utility model double energy X-ray human body Tibetan quality testing is looked into equipment is as follows: the staff presses the switching on and shutting down switch on the control station 9, open computer 3, system, control circuit plate (CCPU) in the control subrack 2 sends instruction according to the program that is solidificated in the plank to x-ray source 4, and x-ray source 4 is instructed pipe by X ray signal controlling plate (XGCB), to optimize the radiographic source duty.Instruction is after pipe finishes, and human body transporter 8 is provided with according to system by computer 3 and sends instruction to the CCPU in the control subrack 2 and control it and be in original position, and indication equipment enters normal operating conditions.
When tested personnel climb up conveyer belt, enter when checking passage 7, need to put and be with well upward eyeshield such as hands, foot in the position as indicated.The staff sends work order for human body transporter 8 by the supervisory keyboard of control station 9 by CCPU, drags conveyer belt and moves, and x-ray source 4 preheatings simultaneously also begin to launch X ray, detect beginning.When X ray sees through human body, ray signal is received by X ray dual intensity detector 6, become the signal of telecommunication by opto-electronic conversion, this signal is processed into the digital signal that computer 3 can be discerned processing by image processing system, shows by the real-time spool of the display of control station 9 after 3 pairs of these Digital Signal Processing of computer.By behind the X ray covering of the fan, conveyer belt is out of service under the control of limit switch fully for tested personnel, and x-ray source 4 stops emission, finishes primary measured personnel's image acquisition operation.At this moment, display shows tested personnel's X ray transmission image (the colored spool image of human body), whether carries contraband by the staff at the tested personnel of image discriminating.
Therefore, double energy X-ray human body of the present utility model is hidden quality testing and is looked into equipment, by the detected high and low energy detection data of X ray dual intensity detector, obtain the equivalent atom ordinal number information of checking matter, utilize this information can distinguish Organic substance, inorganic matter and mixture, and when showing, compose with different colours the accurate interpretation of the operator that are more convenient for.
Figure 2 shows that this utility model second embodiment double energy X-ray human body hides the planar structure sketch map that quality testing is looked into equipment, the structure of the checkout equipment of this checkout equipment and first embodiment is basic identical, and difference is that checkout equipment shown in Figure 2 also comprises the protected type protective cover 13 that surrounds whole inspection passage 7 and also be provided with the interlocking switch 12 that is used to prevent the X ray leakage on protected type protective cover 13.When having only protective cover 13 to be in closed condition, X ray just can be launched, otherwise radiographic source is not sent out X ray.In addition, check also to be provided with between passage 7 and the control station 9 and be used to monitor the video monitoring system 10 of tested personnel's health and the voice interactive system 11 of linking up with tested personnel.
Figure 3 shows that this utility model the 3rd embodiment double energy X-ray human body hides the planar structure sketch map that quality testing is looked into equipment, the structure of the checkout equipment of this checkout equipment and second embodiment is basic identical, difference is that checkout equipment shown in Figure 3 is arranged in the automobile 14, become a practicality, motility, human body safety inspection equipment that convenience is stronger, can fit the inspection requirements of the various occasions of quick response.In the time of in checkout equipment is arranged on automobile 14, omit the travelling car of control station.
After the collection of double energy X-ray human body image is finished, the staff is by control station 9, handle except carrying out conventional assistant images, as highlight, add beyond dark, edge enhancing, subregion amplification, white and black displays, image inversion, the pulling back image etc., can also carry out a kind of double energy X-ray human body that this utility model relates to and hide the image processing method that the quality testing measurement equipment uses, make the image after the processing more help eye-observation, checking process is more effective and rapid.
Figure 4 shows that the flow chart of this utility model image processing method.At step S1, gather the dual intensity human body image, that is, gather tested personnel's high and low energy human body image by x-ray source, X ray dual intensity detector and image capturing system.At step S2, obtain the ratio gray level image, promptly from the high and low energy human body image that collects, obtain the ratio gray level image.The ratio gray level image of indication is meant herein: the mental retardation image is than last high energy image, and respective pixel ratio is shone upon the gray level image that obtains, and the gray-level of this gray level image is consistent with high and low energy human body image gray-level.At step S3, tissue is peeled off, and promptly the reduced value gray level image carries out tissue and peels off.
Figure 5 shows that the refinement flow chart of step S2 among this utility model Fig. 4.At step S21, carry out Gauss's low-pass filtering treatment, promptly utilize Gauss's low-pass filtering operator can carry out process of convolution by human body image with high and low respectively.Image after the processing is compared with the image before the filtering, and is more level and smooth, and signal noise ratio (snr) of image improves.In this utility model embodiment, Gauss's low-pass filtering operator h is:
At step S22, obtain the ratio gray level image, promptly by the mental retardation image after the convolution than last high energy image, obtain each pixel mental retardation and high energy ratio R in the image, its expression formula is:
At step S23, mapping promptly is mapped to and the consistent grey image R of high and low energy human body image gray-level by ratio figure R '.Concrete operations are: seek peak v in ratio image R; Afterwards, each pixel is carried out following formula manipulation among the reduced value image R:
Figure 6 shows that the refinement flow chart of step S3 among this utility model Fig. 4.At step S31, carry out image segmentation, promptly the reduced value gray level image carries out image segmentation, keeps the part that meets the segmentation threshold requirement in the ratio gray level image, and the labelling segmentation result is communicated with district's (after cutting apart, each independently is called the connection district in the target area).Wherein, segmentation threshold be made as s (HI (i, j)) needs explanation, this step relate to segmentation threshold s (HI (i, j)) is designed to the monotonic function relevant with pixel grey scale, and the ratio gray level image is cut apart regular shown in following formula:
Wherein, the ratio gray level image after SR represents to cut apart, Z are used for the labelling segmentation result and are communicated with the district.
For step S32, this utility model adopts a kind of connection district labeling method of zone similarity growth to realize, these method basic ideas are: the whole connection of a labelling district, in labeling process, the minimum boundary rectangle scope in record connection district, and in this scope, be communicated with other character of district statistics of (other character refer to be communicated with district's area, with the corresponding ratio gray level image average gray in connection district), and then next zone of labelling and statistics, be communicated with the district up to all and all be labeled and added up.Mainly may further comprise the steps:
(1) labelling is communicated with that each independently is communicated with district in the district, and add up each independently be communicated with distinguish area, independently corresponding ratio gray level image average gray is distinguished in connection.
(2) filter judgement and operation to being communicated with the district, promptly according to default experience thresholding area threshold and thresholding average gray threshold value, filter being communicated with the district, only keep connection district area and be not less than experience thresholding area threshold, be communicated with the connection district that the corresponding ratio gray level image average gray in district is not higher than thresholding average gray threshold value.
Specifically, comprising: input is communicated with district's image lines by line scan, find unmarked regional first point, this point of labelling; Check this point eight pixels (four pixels in upper and lower, left and right on every side, and upper left, lower-left, upper right, four pixels in bottom right), and labelling satisfies some connectivity platform, that be not labeled as yet, simultaneously newly-increased gauge point noted the seed points as region growing; In the follow-up labeling process, take out a seed points in the array of the seed points that constantly from internal memory, writes down, implement above-mentioned operation, array up to the record seed points is empty, finish one and be communicated with district's labelling, record is communicated with district's area, and in this labeling process, record is communicated with the minimum boundary rectangle scope in district, finishes an independent district's labelling that is communicated with; Utilize minimum boundary rectangle range computation to be communicated with the corresponding ratio gray level image average gray in district; Filter judgement and operation to being communicated with the district; Labelling is communicated with in the district next unmarked zone and judges and operation being communicated with the district, is communicated with that the district all is labeled and judges and operation through filtering up to input.
At step S32, filtering is communicated with the district, promptly segmentation result is communicated with the district and is communicated with district's filtering, removes tissue part in the image.Image SR after connection district's filtering is labeled as SR '.
At step S33, greyscale transformation is promptly carried out greyscale transformation to the ratio gray level image that is communicated with after district's filtering, obtains atomic number and the tissue parts of images Eo that differs greatly.In this utility model embodiment, the greyscale transformation process comprises that linear gray scale stretches and two steps of image inverse.Image after connection district's filtering soon carries out linear gray scale and stretches; Afterwards, linear gray scale stretched image is carried out inverse.And the image after connection district's filtering is carried out grey scale change is to carry out according to following formula:
Wherein, 1v is for being communicated with the low gray scale empirical value in the ratio gray level image after district's filtering, hv is the high gray scale empirical value in the ratio gray level image, t is a picture signal gray scale peak value, SR ' is the image after connection district's filtering, the pixel grey scale of gray scale between lv and hv among the image SR ' is stretched to O to t, and then carries out inverse (inverse is meant the whole upset of gray value).
Behind step S33, obtain tissue and peel off the back image, compare with the ratio gray level image, muscle in the human body, skin, internal organs etc. are organized and substantially all are stripped from, the object 100 that has only kept the part skeleton in the image and differed greatly with the tissue atomic number, as: contrabands such as drugs, explosive, metal and nonmetal weapon, this type objects gray scale is lower, in image, relatively significantly, more help eye-observation.
Therefore, image processing method of the present utility model by tissue in the image is discerned and peeled off, only keeps the part that atomic number and tissue differ greatly in the image, make the image after the processing more help eye-observation, checking process is more effective and rapid.
The specific embodiment of the above is the better embodiment of utility model; be not to limit concrete practical range of the present utility model with this; scope of the present utility model comprises and is not limited to this specific embodiment, and the equivalence that all shapes according to this utility model, structure are done changes and all comprises in the protection domain of the present utility model.
Claims (10)
1. a double energy X-ray human body is hidden quality testing and is looked into equipment, be used to check that tested personnel hide thing, it comprises x-ray source, X ray collimating components, X ray dual intensity detector, check passage, place tested personnel's human body transporter, control station, control subrack, with the computer that described control subrack links to each other, the image capturing system and Flame Image Process and the control system that be arranged in the described control subrack, are connected with X ray dual intensity detector;
Wherein: described x-ray source is high-order to be placed, and aims at tested personnel's abdominal part, is used for the outgoing X ray; Described control station sends control instruction; Described control subrack is connected with control station, is used to receive described control instruction, the work of control x-ray source, human body transporter; Described X ray dual intensity detector, be installed in the described inspection passage, be used to survey the sigmatron, the low energy X ray that penetrate detected human body, and convert the corresponding signal of telecommunication to, be sent to Flame Image Process and control system, be processed into described computer can discern processing, represent the digital signal of the analyte image of dissimilar material properties with different colours, and by computer to this digital signal handle the back in real time spool show;
It is characterized in that described X ray dual intensity detector comprises the mental retardation detector that is used to receive low energy X ray that order is provided with, and is used to filter the filter disc of low energy X ray, and the high energy detector that is used to receive sigmatron.
2. double energy X-ray human body according to claim 1 is hidden quality testing and is looked into equipment, it is characterized in that, described inspection passage adopts the door case type structure; Described X ray dual intensity detector is installed in the doorframe, and its quantity is a plurality of, be arranged in a straight line the row, L is capable or C is capable.
3. double energy X-ray human body according to claim 1 is hidden quality testing and is looked into equipment, it is characterized in that, also be provided with between described inspection passage and the control station and be used to monitor the video monitoring system of tested personnel's health and the voice interactive system of linking up with tested personnel.
4. double energy X-ray human body according to claim 1 is hidden quality testing and is looked into equipment, it is characterized in that described control station comprises display and supervisory keyboard.
5. double energy X-ray human body according to claim 4 is hidden quality testing and is looked into equipment, it is characterized in that described control station also comprises travelling car, and described display and supervisory keyboard are arranged on the described travelling car.
6. double energy X-ray human body according to claim 1 is hidden quality testing and is looked into equipment, it is characterized in that described X ray collimating components is made up of radiographic source collimator and protective cover.
7. double energy X-ray human body according to claim 1 is hidden quality testing and is looked into equipment, it is characterized in that, described human body transporter comprises motor, be connected with described motor, by steadily dragging the conveyer belt of realizing tested personnel movement, and be arranged on described conveyer belt two ends, be used for controlling the limit switch of stroke.
8. double energy X-ray human body according to claim 1 is hidden quality testing and is looked into equipment, it is characterized in that, comprises that also keeping the double energy X-ray human body hides quality testing and look into equipment and be operated in fan part in the rational temperature scope.
9. double energy X-ray human body according to claim 1 is hidden quality testing and is looked into equipment, it is characterized in that, also comprises the protected type protective cover that surrounds whole inspection passage; Also be provided with the interlocking switch that is used to prevent the X ray leakage on the described protected type protective cover.
10. double energy X-ray human body according to claim 9 is hidden quality testing and is looked into equipment, it is characterized in that, described double energy X-ray human body Tibetan quality testing is looked into equipment and is arranged in the automobile.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102455305A (en) * | 2010-11-01 | 2012-05-16 | 北京中盾安民分析技术有限公司 | Device for detecting hidden matters on human body by using dual-energy X-rays and image processing method used by device |
| CN102657537A (en) * | 2012-04-28 | 2012-09-12 | 深圳黎明镒清图像技术有限公司 | Movable X-ray human body whole safety inspection system |
| CN108460753A (en) * | 2018-01-03 | 2018-08-28 | 沈阳东软医疗系统有限公司 | Dual energy CT image processing method, device and equipment |
| CN108992081A (en) * | 2011-10-21 | 2018-12-14 | 三星电子株式会社 | X-ray imaging equipment and its control method |
-
2010
- 2010-11-01 CN CN2010205874837U patent/CN202069600U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102455305A (en) * | 2010-11-01 | 2012-05-16 | 北京中盾安民分析技术有限公司 | Device for detecting hidden matters on human body by using dual-energy X-rays and image processing method used by device |
| CN108992081A (en) * | 2011-10-21 | 2018-12-14 | 三星电子株式会社 | X-ray imaging equipment and its control method |
| CN108992081B (en) * | 2011-10-21 | 2022-08-16 | 三星电子株式会社 | X-ray imaging apparatus and control method thereof |
| CN102657537A (en) * | 2012-04-28 | 2012-09-12 | 深圳黎明镒清图像技术有限公司 | Movable X-ray human body whole safety inspection system |
| CN102657537B (en) * | 2012-04-28 | 2014-03-12 | 深圳黎明镒清图像技术有限公司 | Movable X-ray human body whole safety inspection system |
| CN108460753A (en) * | 2018-01-03 | 2018-08-28 | 沈阳东软医疗系统有限公司 | Dual energy CT image processing method, device and equipment |
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