Radiation imaging system and image processing method

Abstract

The invention discloses a radiation imaging system and an image processing method. The system includes a ray generator arranged on one side of the detection channel for generating orthogonal angle ray beams and oblique angle ray beams, and an orthogonal angle detector arranged on the other side of the detection channel to respectively receive the orthogonal angle ray beams and skew angle ray beams. and oblique angle detector to obtain front angle image and oblique angle image. The image processing method includes correcting the oblique angle image based on the orthogonal angle image, so that the height of the oblique angle image is the same as the height of the orthogonal angle image. According to the present invention, the problem of automatic scanning of vehicles / cargoes and 3D display of radiation images can be solved while ensuring the safety of the driver's radiation dose, and the image can be corrected to improve the 3D display effect.

Description

technical field [0001] The invention relates to the field of radiation technology, in particular to a radiation imaging system and an image processing method. Background technique [0002] Using high-energy radiation to automatically scan and inspect high-speed moving targets such as vehicles, it can search for smuggled, illegal, and prohibited items without interrupting the high-speed passage of vehicles. It has become an ideal means for 100% inspection of cargo vehicles. At present, most of the existing vehicle / cargo radiation imaging security inspection equipment can only display two-dimensional information, usually conventional 2D images. The technology disclosed in the patent document CN101210895B published on August 27, 2008 can obtain certain depth information , but the final results are only displayed on different 2D images. However, due to the superposition of radiation imaging image information, complex content, and spatial deformation, it is usually difficult for...

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Problems solved by technology

The patent document CN101953694B published on March 23, 2011 proposes a medical and industrial X-ray real-time stereoscopic imaging device, which can realize X-ray stereoscopic imaging, and has the advantages of simplicity, speed, and low dose, but the proposed system has a limited source of radiation. In order to contain two X-ray tubes, it is necessary to use a moving platform to realize the movement of the ray source and the detector around the detection target. This method is difficult to use for vehicle / cargo detection

[0005] At present, there is no relevant information to disclose the 3D radiation imaging security scanning technology for the driver to pass through the vehicle directly at high speed without getting out of the car

The stereoscopic imaging device disclosed in the patent document CN102411157B published on May 23, 2012 can realize stereoscopic imaging, but it does not consider the radiation safety design of the driver, nor does it consider the image produced by the different positions of the detectors with different viewing angles relative to the radiation source. difference

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