WO2018072571A1 - 用于扫描成像的方法、装置以及系统 - Google Patents

用于扫描成像的方法、装置以及系统 Download PDF

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Publication number
WO2018072571A1
WO2018072571A1 PCT/CN2017/101149 CN2017101149W WO2018072571A1 WO 2018072571 A1 WO2018072571 A1 WO 2018072571A1 CN 2017101149 W CN2017101149 W CN 2017101149W WO 2018072571 A1 WO2018072571 A1 WO 2018072571A1
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Prior art keywords
item
displacement
detector
predetermined displacement
data
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English (en)
French (fr)
Inventor
徐强
喻卫丰
马媛
胡煜
孙尚民
刘生玺
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Nuctech Co Ltd
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Nuctech Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
    • G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
    • G01V5/223—Mixed interrogation beams, e.g. using more than one type of radiation beam
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/10—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the material being confined in a container, e.g. in a luggage X-ray scanners

Definitions

  • the present disclosure relates to imaging techniques, and in particular to a method, apparatus, and system for scanning imaging.
  • X-ray imaging detection technology is a widely used security inspection technology, and many devices based on X-ray imaging detection technology can be seen at airports and railway stations.
  • neutron detection technology Another existing dangerous goods detection technology is neutron detection technology.
  • the neutron can react with the nucleus of the substance to emit characteristic gamma rays, and based on the energy spectrum of the gamma ray, the element type of the substance to be analyzed can be judged.
  • neutron-X-ray contraband detection method capable of combining the X-ray imaging detection technology and the neutron detection technology as described above to obtain high-resolution X-ray imaging detection technology and element recognition of neutron detection technology.
  • the basic idea is to merge the neutron image and the X-ray image into one image so that the points corresponding to the same position of the detected object in the neutron image and the X-ray image completely coincide.
  • each of the points includes element distribution information and density information of the detected object.
  • the existing neutron and X-ray image fusion method is to perform calculation according to a fixed pitch and a constant speed between two kinds of radiation detectors, and obtain the number of image columns in which the scanned images formed by the two radiation sources are different. After subtraction, two scanned images of the same number of columns are obtained, and then the two images are merged.
  • this method of image fusion has practical defects. In the actual situation, the scanning speed of the system is not constant, and the scanned images formed after image fusion cannot be completely fused, and there is a shadow portion. In this case, the performance of the device is affected, and the scanned image of the article cannot be clearly and accurately displayed.
  • the present disclosure provides a method, apparatus, and system for scanning imaging that can enhance the performance of the device and clearly and accurately display a scanned image of the article.
  • a method for scanning imaging comprising: generating, by a first detector, first detection data according to a first predetermined displacement of an item to be inspected; The predetermined displacement correspondingly generates second probe data; converting the first probe data into the first scan map; converting the second probe data into the first scan data a second scan; and fusing the first scan image with the second scan image.
  • the first predetermined displacement is equal to the second predetermined displacement.
  • the method further includes generating a displacement signal using the displacement sensor.
  • the displacement sensor is a rotary encoder.
  • the method further includes: when the item reaches the first designated position, starting to generate a first trigger signal for the first detector according to the first predetermined displacement.
  • the method further includes: stopping transmitting the first trigger signal when the item leaves the third designated position.
  • the method further includes: when the item reaches the second specified position, starting to generate a second trigger signal for the second detector according to the second predetermined displacement.
  • the method further includes: stopping transmitting the second trigger signal when the item leaves the fourth designated position.
  • the first probe data and the second probe data are column data.
  • an apparatus for scanning imaging comprising: a first detector module correspondingly generating first probe data according to a first predetermined displacement of an item to be detected; and a second detector module according to the item The second predetermined displacement correspondingly generates second detection data; the imaging module is configured to convert the first ray data into the first scan image, convert the second ray data into the second scan image, and convert the first scan image and the second scan image Scanned image fusion imaging.
  • the apparatus further includes: a displacement module configured to generate the first predetermined displacement signal and the second predetermined displacement signal according to the item displacement information.
  • the apparatus further includes: a control module configured to acquire a first predetermined displacement and a second predetermined displacement of the article; when the article reaches the first designated location without leaving the third designated location, Generating a first trigger signal for the first detector based on the first predetermined displacement; and when the item reaches the second designated position without leaving the fourth designated position, generating a second for the second detector based on the second predetermined displacement Two trigger signals.
  • a control module configured to acquire a first predetermined displacement and a second predetermined displacement of the article; when the article reaches the first designated location without leaving the third designated location, Generating a first trigger signal for the first detector based on the first predetermined displacement; and when the item reaches the second designated position without leaving the fourth designated position, generating a second for the second detector based on the second predetermined displacement Two trigger signals.
  • a system for scanning imaging comprising:
  • the encoder is configured to obtain displacement information of the item to be detected; the controller is configured to control the accelerator to detect according to the displacement information of the item; the detector is configured to detect the item, collect the detection data; and the imaging system is configured to process the detection data, Imaging the item; and a conveyor configured to transport the item.
  • the mismatch problem in the fusion of a plurality of radiographic images is solved, the performance of the device can be improved, and the image of the article can be clearly and accurately displayed.
  • FIG. 1 is a block diagram of a system for scanning imaging, according to an example.
  • FIG. 2 is a flow chart of a method for scanning imaging, according to an example.
  • 3 is a flow chart of another method for scanning imaging, according to an example.
  • FIG. 4 is a flow chart of still another method for scanning imaging, according to an example.
  • FIG. 5 is a block diagram of yet another apparatus for scanning imaging, according to an example.
  • Scanning system imaging system 10 conveyor 101; encoder 103; controller 105; detector 107;
  • FIG. 1 is a block diagram of a system for scanning imaging, according to an exemplary embodiment.
  • the system 10 for scanning system imaging includes a conveyor 101, an encoder 103, a controller 105, at least two detectors 107, and an imager 109.
  • the original method of image fusion is calculated based on the fixed spacing and constant speed between the two types of radiation detectors, that is, using the constant speed to calculate two
  • the number of columns of the image phase is not accurate.
  • the present disclosure controls the relationship between the moving distance of the scanned goods and the number of columns of the scanned image.
  • the radiation detector generates a fixed number of scanning columns for each unit distance to be detected, and the final number of scanned image columns is only related to the length of the article itself.
  • the conveyor 101 is a device for carrying and transporting the inspected articles, and the articles are relatively fixed with the transmission system during the transmission process.
  • the encoder 103 is a device for acquiring displacement information of the object to be inspected, and the encoder rotates as the article moves on the conveyor, and generates a signal when it rotates. Since there is no relative displacement between the item and the drop machine, the number of signals produced by each distance of the item is a fixed number.
  • the controller 105 is a device for controlling the detecting device.
  • the controller reads the pulse transmitted from the encoder, converts the pulse displacement into a displacement quantity through calculation, and generates a corresponding control signal to control the detector to generate the radiation.
  • the detector 107 is a device for generating a detecting ray and collecting the detecting data, and the detected object can obtain a complete fluoroscopy data by any one of the detectors.
  • the imager 109 is a device for receiving the scan data of the detector and converting the data into an image.
  • the inspection item sequentially performs one scan through two detections, and the imaging device fuses the images obtained by the two scans together to generate a final image. image.
  • the communication connection between the conveyor 101, the encoder 103, the controller 105, the detector 107, and the imager 109 may be a wired connection or a wireless connection, which is not limited thereto.
  • system 10 for scanning imaging is merely illustrative and not limiting.
  • FIG. 2 is a flow chart showing a method for scanning imaging, according to an exemplary embodiment. This method can be applied to the system shown in FIG. As shown in FIG. 2, the method 20 includes:
  • step S201 the first probe data is correspondingly generated by the first detector according to the first predetermined displacement of the article.
  • the controller calculates a first predetermined displacement according to the system setting, generates a corresponding control signal according to the first predetermined displacement, and controls the first detector to detect and collect the detection data.
  • the displacement sensor is used to generate a displacement signal
  • the displacement sensor is a rotary encoder, which may be a "Pegamax incremental encoder” and an encoder of similar function.
  • the encoder rotates as the item moves on the conveyor and produces a signal as it rotates. A certain number of pulse signals are generated each time the article moves a distance. Since there is no relative displacement between the article and the conveyor, the number of signals generated by each distance of the article is a fixed number.
  • the first detector may be an X-ray detector.
  • step S203 the second probe data is correspondingly generated by the second detector according to the second predetermined displacement of the article.
  • the controller calculates a second predetermined displacement according to the system setting, generates a corresponding control signal according to the second predetermined displacement, and controls the second detector to detect and collect the second detection data.
  • the second detector can be a neutron ray detector.
  • the first predetermined displacement may be equal to the second predetermined displacement.
  • the first predetermined displacement and the second predetermined displacement are both W, and W is a system preset value. That is, in the first detector detection interval (between the first designated position and the third designated position), the object generates a detection every time the moving distance is moved, and the second detector detecting interval (the third designated position to the fourth designated position) Between the items, a detection is also generated for each moving W distance.
  • step S205 the first probe data is converted into a first scan map.
  • the first detected data is detected and collected for the first time as the first column of the first scan image, and the first detected data obtained by the scan is sequentially arranged, and the first ray data obtained by the nth time is used as the The nth column of the first scan; the n is a positive integer greater than equal to 1.
  • step S207 the second probe data is converted into a second scan map.
  • a set of probe data is obtained as a result of a second predetermined displacement of the article.
  • the second detection data obtained and collected for the first time is used as the first column of the second scan image, and the second detection data obtained by the scan is sequentially arranged, and the first ray data obtained by the mth acquisition is sequentially arranged.
  • the mth column of the first scan the m is a positive integer greater than or equal to 1.
  • step S209 the first scan image and the second scan image are merged and imaged.
  • a complete set of detection data is obtained.
  • the data is transmitted to the imager, a scanned image of the item is obtained.
  • an item is also obtained. Scan the image.
  • the first scan image and the second scan image can be directly fused to form an image.
  • the method for scanning imaging of the embodiments of the present disclosure overcomes the problem of inconsistent number of scan image images caused by speed changes during scanning.
  • the problem of mismatching of multiple image fusions can be effectively solved, the performance of the product is improved, and the competitiveness of the product is increased.
  • FIG. 3 is a flow chart showing another method for scanning imaging, according to an exemplary embodiment.
  • the method illustrates a specific method of obtaining the first probe data, which may be applied to the system shown in FIG. 1, or as a supplement to the method described in FIG.
  • the method 30 includes:
  • step S301 the item arrives at the first designated position.
  • the item is transported on a conveyor, and the location of the item is determined by the sensor to determine if the item has reached the first designated location.
  • the first designated position is a preset value, which can be set by the initial setting of the system, and can be further adjusted according to the actual situation during the use of the system for scanning imaging.
  • the first designated location is located Acm before the article passes the first detector. The arrival of the item at the first designated position means that either side or face of the item reaches the first designated position.
  • step S303 a first predetermined displacement signal is generated.
  • the controller continuously receives the pulse signal from the encoder during the operation of the entire system, and obtains a first predetermined displacement according to the system setting. For example, each p pulse signal generates a first displacement signal, and p is greater than or equal to A positive integer of 1.
  • the controller calculates the number of pulses to obtain a first predetermined displacement.
  • step S305 a first trigger signal is transmitted.
  • the controller After the controller calculates the first predetermined displacement, the controller then generates a first trigger signal and transmits the signal to the first detector.
  • step S307 the first detector detects and collects data.
  • the first detector After receiving the first trigger signal, the first detector detects the object to be inspected, and then collects the first probe data and transmits it to the imager.
  • step S309 it is determined whether or not to leave the third designated position.
  • the third designated position is a preset value, which can be set by the initial setting of the system, and can be further adjusted according to the actual situation during the use of the system for scanning imaging.
  • the third designated position is located in the article passing the first A detector is at Bcm. The fact that the item leaves the third designated position means that all sides or faces of the item leave the third designated position.
  • step S311 is performed.
  • step S311 the first detector stops operating.
  • the item completely leaves the third designated position, that is, the item leaves the first detector detection space, and the first detector stops working.
  • FIG. 4 is a flow chart of still another method for scanning imaging, according to an exemplary embodiment.
  • the method illustrates a specific method of acquiring second probe data, which may be applied to the system shown in FIG. 1, or as a supplement to the method described in FIG.
  • the method 40 includes:
  • step S401 the item arrives at the second designated position.
  • the item is transported on a conveyor, the position of the item is determined by the sensor, and it is determined whether the item has reached the second designated position.
  • the second designated position is a preset value, which can be set by the initial setting of the system, and can be further adjusted according to the actual situation during the use of the system for scanning imaging.
  • the second designated location is located Ccm before the article passes the second detector. The arrival of the item at the second designated position means that either side or face of the item reaches the second designated position.
  • step S403 a second predetermined displacement is obtained.
  • the controller continuously receives the pulse signal from the encoder during the operation of the whole system, and obtains a second predetermined displacement according to the system setting. For example, each q pulse signal generates a second displacement signal, and q is greater than or equal to A positive integer of 1.
  • the controller calculates the number of pulses to obtain a second predetermined displacement.
  • step S405 a second trigger signal is transmitted.
  • the controller After the controller calculates the second predetermined displacement, the controller then generates a second trigger signal and transmits the signal to the second detector.
  • step S407 the second detector detects and collects data.
  • the second detector After receiving the second trigger signal, the second detector detects the detected object, and then collects the second detection data and transmits it to the imager.
  • step S409 it is determined whether or not to leave the fourth designated position.
  • the fourth designated position is a preset value, which can be set by the initial setting of the system, and can be further adjusted according to the actual situation during the use of the system for scanning imaging.
  • the fourth designated position is located Dcm after the article passes the second detector. The fact that the item leaves the fourth designated position means that all sides or faces of the item leave the fourth designated position.
  • step S411 is performed.
  • step S411 the second detector stops operating.
  • the item completely leaves the fourth designated position, that is, the item leaves the second detector detection space, and the second detector stops working.
  • the program may be stored in a computer readable storage medium, which may be a read only memory, a magnetic disk or an optical disk, or the like.
  • FIG. 5 is a block diagram of an apparatus for scanning imaging, according to an exemplary embodiment.
  • the device 50 includes a displacement module 501, a control module 503, a first detection module 505, a second detection module 507, and an imaging module 509.
  • the displacement module 501 is configured to generate a first displacement signal and a second displacement signal according to the item movement information.
  • the control module 503 is configured to acquire first predetermined displacement information and second predetermined displacement information of the item; when the item reaches the first specified position, start generating the first detector for the first detector according to the first predetermined displacement signal a trigger signal; when the item reaches the second designated position, generating a second trigger signal for the second detector based on the second predetermined displacement signal.
  • the first detection module 505 correspondingly generates first probe data according to the first predetermined displacement of the article.
  • the second detecting module 507 correspondingly generates second detecting data according to the second predetermined displacement of the article
  • the imaging module 509 is configured to convert the first ray data into a first scan image, convert the second ray data into a second scan image, and fuse the first scan image with the second scan image.
  • the apparatus for scanning imaging of the embodiments of the present disclosure overcomes the problem of inconsistent number of scan image images caused by speed changes during scanning.
  • it can effectively solve the mismatch problem of multiple image fusion, improve the performance of the product and increase the competitiveness of the product.
  • the example embodiments described herein may be implemented by software or by software in combination with necessary hardware. Therefore, the technical solution according to an embodiment of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network. , including several instructions to make one
  • a computing device which may be a personal computer, server, mobile terminal, or network device, etc.) performs a method in accordance with an embodiment of the present disclosure.

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Abstract

一种用于扫描成像的方法、装置以及系统。包括：通过第一探测器（107）根据待检测物品的第一预定位移相应产生第一探测数据（S201）；通过第二探测器（107）根据物品的第二预定位移相应产生第二探测数据（S203）；将第一探测数据转换为第一扫描图（S205）；将第二探测数据转换为第二扫描图（S207）；以及将第一扫描图与第二扫描图融合成像（S209）。本方法能够提升设备的性能，清晰准确的展现物品的图像。

Description

用于扫描成像的方法、装置以及系统 技术领域
本公开涉及成像技术，具体涉及一种用于扫描成像的方法、装置以及系统。
背景技术
一种现有的违禁品检测技术是X射线成像检测技术。X射线成像检测技术是一种已经得到广泛应用的安检技术，在机场、火车站能够看到很多基于X射线成像检测技术的设备。
另一种现有的危险品检测技术是中子类检测技术。对于中子类检测技术，中子能够与物质的原子核发生反应，放出具有特征性的γ射线，根据γ射线的能谱，则可判断被分析的物质的元素种类。
目前有一种中子-X射线违禁品检测方法能够组合如上所述的X射线成像检测技术和中子类检测技术，以获得X射线成像检测技术的高分辨率以及中子类检测技术的元素识别能力这些优点。在中子-X射线违禁品检测方法中，基本思路为将中子图像和X射线图像并合并成一副图像，使得中子图像和X射线图像中对应于被检测物体同一位置的点完全重合。这样，对于合并后的图像来说，其中每一点都包括了被检测物体的元素分布信息和密度信息。
现有的中子和X射线图像融合的方法是，按照两种射线探测器之间的固定间距和恒定速度进行计算，得出两种射线源形成的扫描图像相差的图像列数。减法后得出两幅相同列数的扫描图像，然后再把两幅图像进行融合。但这种图像融合的方法在实际存在着缺陷。在实际情况中，系统的扫描速度不是恒定的，在图像融合后形成的扫描图像不能完全融合，存在阴影部分。这样的话就影响设备的性能，不能清晰准确的展现物品的扫描图像。
因此，需要一种能够将中子-X射线图像准确融合的方法及系统。
在所述背景技术部分公开的上述信息仅用于加强对本公开的背景的理解，因此它可以包括不构成对本领域普通技术人员已知的现有技术的信息。
发明内容
本公开提供一种用于扫描成像的方法、装置以及系统，能够提升设备的性能，清晰准确的展现物品的扫描图像。
本公开的其他特性和优点将通过下面的详细描述变得显然，或部分地通过本公开的实践而习得。
根据本公开的一方面，提供一种用于扫描成像的方法，包括：通过第一探测器根据待检测物品的第一预定位移相应产生第一探测数据；通过第二探测器根据物品的第二预定位移相应产生第二探测数据；将第一探测数据转换为第一扫描图；将第二探测数据转换为第 二扫描图；以及将第一扫描图与第二扫描图融合成像。
在本公开的一种示例性实施例中，第一预定位移等于第二预定位移。
在本公开的一种示例性实施例中，上述方法还包括：利用位移传感器产生位移信号。
在本公开的一种示例性实施例中，上述位移传感器为旋转编码器。
在本公开的一种示例性实施例中，上述方法还包括：当物品到达第一指定位置时，根据第一预定位移开始产生用于第一探测器的第一触发信号。
在本公开的一种示例性实施例中，上述方法还包括：当物品离开第三指定位置时，停止发送第一触发信号。
在本公开的一种示例性实施例中，上述方法还包括：当物品到达第二指定位置时，根据第二预定位移开始产生用于第二探测器的第二触发信号。
在本公开的一种示例性实施例中，上述方法还包括：当物品离开第四指定位置时，停止发送第二触发信号。
在本公开的一种示例性实施例中，第一探测数据和第二探测数据为列数据。
根据本公开的另一方面，提供一种用于扫描成像的装置，包括：第一探测器模块，根据待检测物品的第一预定位移相应产生第一探测数据；第二探测器模块，根据物品的第二预定位移相应产生第二探测数据；成像模块，配置成将第一射线数据转换为第一扫描图，将第二射线数据转换为第二扫描图，并将第一扫描图与第二扫描图融合成像。
在本公开的一种示例性实施例中，上述装置还包括：位移模块，配置成根据物品位移信息，产生第一预定位移信号与第二预定位移信号。
在本公开的一种示例性实施例中，上述装置还包括：控制模块，配置成获取物品第一预定位移与第二预定位移；当物品到达第一指定位置，未离开第三指定位置时，根据第一预定位移开始产生用于第一探测器的第一触发信号；当物品到达第二指定位置，未离开第四指定位置时，根据第二预定位移开始产生用于第二探测器的第二触发信号。
根据本公开的再一方面，提供一种用于扫描成像的系统，包括：
编码器，配置成获取待检测物品位移信息；控制器，配置成根据物品位移信息，控制加速器进行探测；探测器，配置成探测所述物品，采集探测数据；成像系统，配置成处理探测数据，进行物品成像；以及输送机，配置成传输物品。
根据本公开的用于扫描成像的方法，解决多种射线图像融合时不匹配问题，能够提升设备的性能，清晰准确的展现物品的图像。
附图说明
图1是根据一示例示出的一种用于扫描成像的系统的框图。
图2是根据一示例示出的一种用于扫描成像的方法的流程图。
图3是根据一示例示出的另一种用于扫描成像的方法的流程图。
图4是根据一示例示出的再一种用于扫描成像的方法的流程图。
图5是根据一示例示出的再一种用于扫描成像的装置的框图。
附图标记说明
扫描系统成像的系统10：输送机101；编码器103；控制器105；探测器107；
成像仪109。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的范例；相反，提供这些实施方式使得本公开将更加全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。附图仅为本公开的示意性图解，并非一定是按比例绘制。图中相同的附图标记表示相同或类似的部分，因而将省略对它们的重复描述。
此外，所描述的特征、结构或特性可以以任何合适的方式结合在一个或更多实施方式中。在下面的描述中，提供许多具体细节从而给出对本公开的实施方式的充分理解。然而，本领域技术人员将意识到，可以实践本公开的技术方案而省略所述特定细节中的一个或更多，或者可以采用其它的方法、组元、装置、步骤等。在其它情况下，不详细示出或描述公知结构、方法、装置、实现或者操作以避免喧宾夺主而使得本公开的各方面变得模糊。
图1是根据一示例性实施方式示出的一种用于扫描成像的系统的框图。如图1所示，该用于扫描系统成像的系统10包括：输送机101、编码器103、控制器105、至少两个探测器107以及成像仪109。
由于整个成像系统的对待检测物品的扫描速度不是恒定的，而原有的图像融合的方法是基于两种射线探测器之间的固定间距和恒定速度进行计算的，即利用恒定速度算出来了两幅图像相的列数是不准确。本公开控制被扫描货物移动距离和扫描图像的列数关系。使得待检测物品每移动单位距离，射线探测器产生固定的扫描列数，最终得到的扫描图像列数只与物品本身长度有关。
其中输送机101为承载并传输被检物品的设备，物品在传输过程中，与传输系统是相对固定的。
编码器103为获取被检物品位移信息的设备，编码器会随物品在输送机上移动而转动，其转动时产生信号。由于物品和送机之间没有相对位移，所以物品每移动一段距离产生的信号数量是固定数量的。
控制器105为控制探测装置的设备，控制器读取编码器传送过来的脉冲，经过计算把脉冲位移转化为位移数量，再产生相应的控制信号，控制探测器产生射线。
探测器107为产生探测射线以及收集探测数据的设备，被检物品通过任意一个探测器都能得到一个射线透视的完整扫描数据。
成像仪109为接收探测器扫描数据并将数据转化为图像的设备，在被实施例中，检物品依次通过两个探测完成一次扫描，成像设备将这两次扫描得到的图像融合在一起生成最终图像。
输送机101、编码器103、控制器105、探测器107以及成像仪109之间的通信连接可以是有线连接也可以为无线连接，本文不以此为限。
需要说明的是，该用于扫描成像的系统10仅为一示例说明，而非限制本公开。
图2是根据一示例性实施方式示出的一种用于扫描成像的方法的流程图。该方法可应用于图1所示系统中。如图2所示，该方法20包括：
在步骤S201中，通过第一探测器根据物品的第一预定位移相应产生第一探测数据。
控制器根据系统设定，计算得到第一预定位移，根据第一预定位移产生相应的控制信号，控制第一探测器探测并收集探测数据。具体步骤以及信息请参考图3说明。在本实施例中，利用位移传感器产生位移信号，位移传感器为旋转编码器，可为“倍加福增量型编码器”以及类似功能的编码器。编码器会随物品在输送机上移动而转动，其转动时产生信号。物品每移动一段距离即产生的一定数量的脉冲信号，由于物品和输送机之间没有相对位移，所以物品每移动一段距离产生的信号数量是固定数量。在本实施例中，第一探测器可为X射线探测器。
在步骤S203中，通过第二探测器根据物品的第二预定位移相应产生第二探测数据。
控制器根据系统设定，计算得到第二预定位移，根据第二预定位移产生相应的控制信号，控制第二探测器探测并收集第二探测数据。具体步骤以及信息请参考图4说明。在本实施例中，第二探测器可为中子射线探测器。
在本实施例中，第一预定位移可等于第二预定位移。例如，第一预定位移与第二预定位移均为W，W为一系统预设置的数值。即为，在第一探测器探测区间(第一指定位置到第三指定位置之间)物品每移动W距离即产生一次探测，以及第二探测器探测区间(第三指定位置到第四指定位置之间)物品每移动W距离也产生一次探测。
在步骤S205中，将第一探测数据转换为第一扫描图。
由于物品每移动第一预定位移即产生一次探测，随即得到一组探测数据。在本实施例中，第一次探测并采集得到的第一探测数据作为第一扫描图的第一列，扫描得到的第一探测数据依次排列，第n次采集得到的第一射线数据作为所述第一扫描图的第n列；所述n为大于等1的正整数。
在步骤S207中，将第二探测数据转换为第二扫描图。
由于物品每移动第二预定位移即产生一次探测，随即得到一组探测数据。在本实施例中，第一次探测并采集得到的第二探测数据作为第二扫描图的第一列，扫描得到的第二探测数据依次排列，第m次采集得到的所述第一射线数据作为所述第一扫描图的第m列；所述m为大于等1的正整数。
在步骤S209中，将第一扫描图与所述第二扫描图融合成像。
被检物品通过第一探测器后，得到一组完整探测数据，数据传送给成像仪后，会得到一张物品的扫描图像；同理，物品经过第二探测器后，也会得到一张物品扫描图像。
在本实施例中，由于第一预定位移等于第二预定位移。即为在第一探测器探测区间与第二探测器探测区间内，物品扫描次数相同，并且，不论被扫物品通过X射线系统还是中子射线系统，其得到的扫描图像列数只与本身长度有关。即为n＝m，第一扫描图与所述第二扫描图的列数相等。第一扫描图与第二扫描图可以直接融合成像。
本公开实施方式的用于扫描成像的方法，克服扫描过程中速度变化带来的扫描图图像列数不一致的问题。在进行多个探测器扫描成像时，可以有效的解决多张图像融合时不匹配问题，提高了产品的使用性能，增加产品的竞争力。
应清楚地理解，本公开描述了如何形成和使用特定示例，但本公开的原理不限于这些示例的任何细节。相反，基于本公开的内容的教导，这些原理能够应用于许多其它实施方式。
图3是根据一示例性实施方式示出的另一种用于扫描成像的方法的流程图。该方法说明了获取第一探测数据的具体方法，该方法可应用于图1所示系统中，也可作为对于图2介绍的方法的补充说明。如图3所示，该方法30包括：
在步骤S301中，物品到达第一指定位置。
如图1所述，物品在传输机上被传送，通过传感器判断物品位置，判断物品是否到达第一指定位置。第一指定位置为一个预设置的数值，可通过系统初始设置进行设置，后续在用于扫描成像的系统的使用过程中，可根据实际情况进行更近一步的调节。在本实施例中，第一指定位置位于物品经过第一探测器之前Acm处。物品到达第一指定位置具体含义为，物品任一边或者面到达第一指定位置。
在步骤S303中，产生第一预定位移信号。
控制器在整个系统的运行过程中持续接收来自于编码器的脉冲信号，根据系统设定得到第一预定位移的方法，例如，每p个脉冲信号即产生一个第一位移信号，p为大于等于1的正整数。控制器经过计算得到脉冲的数量，得到第一预定位移。
在步骤S305中，发送第一触发信号。
在控制器计算得到第一预定位移之后，控制器随即产生第一触发信号，并将此信号发送出去给第一探测器。
在步骤S307中，第一探测器探测并收集数据。
第一探测器接收到第一触发信号之后，探测被检物品，随即收集第一探测数据，并传送给成像仪。
在步骤S309中，判断是否离开第三指定位置。
继续通过传感器判断物品位置，判断物品是否离开第三指定位置。第三指定位置为一个预设置的数值，可通过系统初始设置进行设置，后续在用于扫描成像的系统的使用过程中，可根据实际情况进行更近一步的调节。在本实施例中，第三指定位置位于物品经过第 一探测器之后Bcm处。物品离开第三指定位置具体含义为，物品所有的边或者面均离开第三指定位置。
如果物品未离开第三指定位置，即返回步骤S303，如果物品离开第三指定位置，则进行步骤S311。
在步骤S311中，第一探测器停止工作。
物品完全离开第三指定位置，即代表物品离开第一探测器探测空间，第一探测器停止工作。
图4是根据一示例性实施方式示出的再一种用于扫描成像的方法的流程图。该方法说明了获取第二探测数据的具体方法，该方法可应用于图1所示系统中，也可作为对于图2介绍的方法的补充说明。如图4所示，该方法40包括：
在步骤S401中，物品到达第二指定位置。
如图1所述，物品在传输机上被传送，通过传感器判断物品位置，判断物品是否到达第二指定位置。第二指定位置为一个预设置的数值，可通过系统初始设置进行设置，后续在用于扫描成像的系统的使用过程中，可根据实际情况进行更近一步的调节。在本实施例中，第二指定位置位于物品经过第二探测器之前Ccm处。物品到达第二指定位置具体含义为，物品任一边或者面到达第二指定位置。
在步骤S403中，得到第二预定位移。
控制器在整个系统的运行过程中持续接收来自于编码器的脉冲信号，根据系统设定得到第二预定位移的方法，例如，每q个脉冲信号即产生一个第二位移信号，q为大于等于1的正整数。控制器经过计算得到脉冲的数量，得到第二预定位移。
在步骤S405中，发送第二触发信号。
在控制器计算得到第二预定位移之后，控制器随即产生第二触发信号，并将此信号发送出去给第二探测器。
在步骤S407中，第二探测器探测并收集数据。
第二探测器接收到第二触发信号之后，探测被检物品，随即收集第二探测数据，并传送给成像仪。
在步骤S409中，判断是否离开第四指定位置。
继续通过传感器判断物品位置，判断物品是否离开第四指定位置。第四指定位置为一个预设置的数值，可通过系统初始设置进行设置，后续在用于扫描成像的系统的使用过程中，可根据实际情况进行更近一步的调节。在本实施例中，第四指定位置位于物品经过第二探测器之后Dcm处。物品离开第四指定位置具体含义为，物品所有的边或者面均离开第四指定位置。
如果物品未离开第四指定位置，即返回步骤S403，如果物品离开第四指定位置，则进行步骤S411。
在步骤S411中，第二探测器停止工作。
物品完全离开第四指定位置，即代表物品离开第二探测器探测空间，第二探测器停止工作。
本领域技术人员可以理解实现上述实施方式的全部或部分步骤被实现为由CPU执行的计算机程序。在该计算机程序被CPU执行时，执行本公开提供的上述方法所限定的上述功能。所述的程序可以存储于一种计算机可读存储介质中，该存储介质可以是只读存储器，磁盘或光盘等。
此外，需要注意的是，上述附图仅是根据本公开示例性实施方式的方法所包括的处理的示意性说明，而不是限制目的。易于理解，上述附图所示的处理并不表明或限制这些处理的时间顺序。另外，也易于理解，这些处理可以是例如在多个模块中同步或异步执行的。
下述为本公开的装置实施例，可以用于执行本公开的方法实施例。对于本公开的装置实施例中未披露的细节，请参照本公开的方法实施例。
图5是根据一示例性实施方式示出的一种用于扫描成像的设备的框图。如图5所示，该设备50包括：位移模块501、控制模块503、第一探测模块505、第二探测模块507以及成像模块509。
其中，位移模块501用于根据所述物品移动信息，产生第一位移信号与第二位移信号。
控制模块503用于获取物品第一预定位移信息与第二预定位移信息；当所述物品到达第一指定位置时，根据所述第一预定位移信号开始产生用于所述第一探测器的第一触发信号；当所述物品到达第二指定位置时，根据所述第二预定位移信号开始产生用于所述第二探测器的第二触发信号。
第一探测模块505根据物品的第一预定位移相应产生第一探测数据。
第二探测模块507根据物品的第二预定位移相应产生第二探测数据；
成像模块509用于将所述第一射线数据转换为第一扫描图，将所述第二射线数据转换为第二扫描图，并将第一扫描图与第二扫描图融合成像。
本公开实施方式的用于扫描成像的装置，克服扫描过程中速度变化带来的扫描图图像列数不一致的问题。在进行多个探测器扫描成像时，可以有效的解决多张图像融合时不匹配问题，提高了产品的使用性能，增加产品的竞争力
需要注意的是，上述附图中所示的框图是功能实体，不一定必须与物理或逻辑上独立的实体相对应。可以采用软件形式来实现这些功能实体，或在一个或多个硬件模块或集成电路中实现这些功能实体，或在不同网络和/或处理器装置和/或微控制器装置中实现这些功能实体。
通过以上的实施方式的描述，本领域的技术人员易于理解，这里描述的示例实施方式可以通过软件实现，也可以通过软件结合必要的硬件的方式来实现。因此，根据本公开实施方式的技术方案可以以软件产品的形式体现出来，该软件产品可以存储在一个非易失性存储介质(可以是CD-ROM，U盘，移动硬盘等)中或网络上，包括若干指令以使得一台 计算设备(可以是个人计算机、服务器、移动终端、或者网络设备等)执行根据本公开实施方式的方法。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (13)

  1. 一种用于扫描成像的方法，包括：
    通过第一探测器根据待检测物品的第一预定位移相应产生第一探测数据；
    通过第二探测器根据所述物品的第二预定位移相应产生第二探测数据；
    将所述第一探测数据转换为第一扫描图；
    将所述第二探测数据转换为第二扫描图；以及
    将所述第一扫描图与所述第二扫描图融合成像。
  2. 如权利要求1所述的方法，其中，第一预定位移等于第二预定位移。
  3. 如权利要求1所述的方法，还包括：利用位移传感器产生位移信号。
  4. 如权利要求3所述的方法，其中，所述位移传感器为旋转编码器。
  5. 如权利要求1所述的方法，还包括：当所述物品到达第一指定位置时，根据所述第一预定位移开始产生用于所述第一探测器的第一触发信号。
  6. 如权利要求5所述的方法，还包括：当所述物品离开第三指定位置时，停止发送所述第一触发信号。
  7. 如权利要求1所述的方法，还包括：当所述物品到达第二指定位置时，根据所述第二预定位移开始产生用于所述第二探测器的第二触发信号。
  8. 如权利要求7所述的方法，还包括：当所述物品离开第四指定位置时，停止发送所述第二触发信号。
  9. 如权利要求1所述的方法，其中，所述第一探测数据和所述第二探测数据为列数据。
  10. 一种用于扫描成像的装置，包括：
    第一探测模块，根据待检测物品的第一预定位移相应产生第一探测数据；
    第二探测模块，根据所述物品的第二预定位移相应产生第二探测数据；以及
    成像模块，用于将所述第一射线数据转换为第一扫描图，将所述第二射线数据转换为第二扫描图，并将第一扫描图与第二扫描图融合成像。
  11. 如权利要求10所述的装置，还包括：位移模块，用于根据所述物品移动信息，产生位移信号。
  12. 如权利要求10所述的装置，还包括：控制模块，用于获取所述物品第一预定位移与第二预定位移；当所述物品到达第一指定位置，未离开第三指定位置时，根据所述第一预定位移开始产生用于第一探测器的第一触发信号；当所述物品到达第二指定位置，未离开第四指定位置时，根据所述第二预定位移开始产生用于第二探测器的第二触发信号。
  13. 一种用于扫描成像的系统，包括：
    编码器，用于获取待检测物品位移信息；
    控制器，用于根据所述物品所述位移信息，控制探测器进行探测；
    探测器，用于探测所述物品，采集探测数据；
    成像系统，用于处理所述探测数据，进行物品成像；以及
    输送机，用于传输所述物品。
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