摘要:
The X-ray fluoroscopic imaging system of the present invention comprises: an inspection passage; an electron accelerator; a shielding collimator apparatus comprising a shielding structure, and a first collimator for extracting a low energy planar sector X-ray beam and a second collimator for extracting a high energy planar sector X-ray beam which are disposed within the shielding structure; a low energy detector array for receiving the X-ray beam from the first collimator; and a high energy detector array for receiving the X-ray beam from the second collimator. The first collimator, the low energy detector array and the target point bombarded by the electron beam are located in a first plane; and the second collimator, the high energy detector array and the target point bombarded by the electron beam are located in a second plane.
摘要:
The present invention discloses a backscattering scintillation detector. The scintillation detector comprises a scintillation crystal detector; a X-ray sensitizing screen, which is disposed forward the scintillation crystal detector and where a backscattered X-ray from an object to be detected is processed and then at least part of the processed X-ray is incident to the scintillation crystal detector; and a photoelectric multiplier, which is disposed backward the scintillation crystal detector and is configured to collect a light signal from the scintillation crystal detector and convert it to an electrical signal. Through the above preferable embodiment, a X-ray sensitizing screen, a scintillation crystal detector, and light guiding and wave-drifting technologies are combined together to obtain a novel scintillation detector, which can improve detection of X-ray, transmission of light signal and conversion of light signal to electrical signal, thereby simplifying structure of the apparatus and reducing cost, while greatly increasing detection efficiency and measurement accuracy of the apparatus.
摘要:
The present disclosure provides method and apparatus for marking a target in a 3D image. The method include steps of: acquiring Computed Tomography (CT) image data of a scene; rendering a 3D image of the scene using ray casting based on the CT image data; removing a transparent region from the 3D image based on a fixed 2D transfer function; and marking the target in the 3D image.
摘要:
The present disclosure provides a radiation detector, comprising: a semiconductor crystal (101) for detecting radiation, the semiconductor crystal comprising a top surface, a bottom surface, and at least one side surface; at least one anode (103) arranged on at least one of the top surface, the bottom surface, and the at least one side surface; and at least one cathode (102) arranged on at least another one of the top surface, the bottom surface, and the at least one side surface, wherein the at least one anode each has a stripe shape, the at least one cathode each has a planar or curved shape, and the at least one cathode and the at least one anode extend in parallel with respect to each other to a length substantially equal to that of the anode. Such an electrode structure can improve energy resolution and detection efficiency of the radiation detector effectively.
摘要:
Provided are apparatus and method for generating distributed x-rays. A hot cathode of an electron gun (1) is used in vacuum to generate electron beams (10) having certain initial movement energy and speed. Periodic scanning is performed with the initial low-energy electron beams, which are thus caused to be reciprocally deflected. A current-limiting device (4) is provided in the travel path of the electron beams along the direction of the reciprocal deflection. Through holes arranged in an array on the current-limiting device, only part of the electron beams targeting specific positions can pass to form sequential electron beam currents distributed in an array. These electron beam currents are accelerated by a high-voltage electric field to obtain high energy, bombard the anode target (5), and thus sequentially generate corresponding focus spots and x-rays distributed in an array at the anode target.
摘要:
The present invention discloses a three-dimensional data processing and recognizing method. The method comprises following steps of: scanning and re-constructing objects to be detected so as to obtain three-dimensional data for recognition of the objects to be detected; and extracting data matching to features from the three-dimensional data, so that the extracted data constitute interested target in order to display and recognize the object to be detected. The present invention also discloses a quick method to recognize the object to be detected such as the shapes of cuboid, cylinder, and cutting tool, and so on.
摘要:
The present invention discloses a human body security inspection apparatus and a corresponding method. Specifically, the apparatus comprises: a human body security inspection device (1), configured to scan the human to be inspected (2) in order to inspect whether the human to be inspected (2) carries prohibited articles; a KINECT sensor (3), configured to real-timely acquire information about the human to be inspected (2) so that the human body security inspection device (1) is capable of real-timely acquiring the information of the human to be inspected (2) by means of the KINECT sensor (3), so as to determine whether the information conforms to requirements of the human body security inspection device (1); and a data processing device (4), configured to communicate with the human body security inspection device (1) and the KINECT sensor (3), in order to real-timely analyse and process the information of the human to be inspected (2).
摘要:
The present invention discloses a millimeter-wave inspection apparatus. The millimeter-wave inspection apparatus comprises: optics devices (30, 40, 50), configured to receive millimeter-wave energy radiated from an object to be inspected and focus the received millimeter-wave energy; a radiometer receiving device (80) configured to receive the focused millimeter-wave energy and transform the millimeter-wave energy into electrical signal; and an imaging device configured to generate a temperature image of the object to be inspected in accordance with the electrical signal, wherein the millimeter-wave inspection apparatus further comprises a radiometer temperature calibration device (110), which comprises: a normal temperature calibration mechanism, having a calibration temperature equal to the current environment temperature, to calibrate the initial value of the radiometer (83); and a high temperature calibration mechanism, having a calibration temperature higher than the current environment temperature, to cooperate with the normal temperature calibration mechanism for calibrating the gain of the radiometer (83).
摘要:
A Raman spectroscopy system comprises a detection center which comprises at least one light source for outputting exciting light which excites a detected object to generate Raman scattered light, and an analysis device for obtaining the Raman spectroscopy of the detected object. The Raman spectroscopy system further comprises several detection terminals, each of which comprises at least one Raman probe, wherein each of the Raman probes introduces the exciting light to the detected object, collects the Raman scattered light generated by the detected object, and returns said Raman scattered light to the detection center.