Security check method and system based on microwave imaging of human bodies

A security check system based on microwave imaging of human bodies, comprising:

• a memory;
• and
• a multithreading processor circuit configured to perform operations comprising:
• pre-creating at least four concurrently operating threads, one of the threads being responsible for movement control and data acquisition, one of the threads being responsible for imaging processing, one of the threads being responsible for interface displaying, and one of the threads being responsible for target detection and recognition;
• controlling, by the thread responsible for movement control and data acquisition, a security check system to gradually acquire echo data of a human body to be checked at a plurality of azimuth angles in an angular range of 0-2π and to gradually transmit the echo data to the memory;
• instructing, by the thread responsible for movement control and data acquisition according to a current data acquisition state in a process of gradually acquiring the echo data, the thread responsible for imaging processing to read, from the memory, echo data within an azimuth angle corresponding to a current frame of image;
• performing three-dimensional imaging processing on the read echo data in the thread responsible for imaging processing to obtain three-dimensional imaging complex image data of the human body to be checked, and synchronously transmitting the three-dimensional imaging complex image data to the thread responsible for interface displaying and the thread responsible for target detection and recognition;
• processing the three-dimensional imaging complex image data in the thread responsible for interface displaying, and displaying a formed image obtained after the processing on a human-computer interaction interface;
• meanwhile,
• performing hidden article target detection on the three-dimensional imaging complex image data in the thread responsible for detection and recognition, identifying a detected article, and then feeding back a detection and identification result to the thread responsible for interface displaying, so that the thread responsible for interface displaying marks a position of the hidden article at the human body and a type of the hidden article on the formed image according to the detection and identification result;
• and
• returning to the stage of instructing, by the thread responsible for movement control and data acquisition according to a current data acquisition state in a process of gradually acquiring the echo data, the thread responsible for imaging processing to read, from the memory, echo data within the azimuth angle corresponding to the current frame of image, and repeating the above stages until the processing and the displaying of an Nth frame of image are completed according to a preset rule, to thereby obtain N frames of images covering the echo data of the human body to be checked at the plurality of azimuth angles in the range of 0-2π, with N being a positive integer.

A non-transitory computer storage medium storing a computer program, which when executed by one or more multithreading processors, causes the one or more multithreading processor circuits to perform operations comprising:

• pre-creating at least four concurrently operating threads, one of the threads being responsible for movement control and data acquisition, one of the threads being responsible for imaging processing, one of the threads being responsible for interface displaying, and one of the threads being responsible for target detection and recognition;
• controlling, by the thread responsible for movement control and data acquisition, a security check system to gradually acquire echo data of a human body to be checked at a plurality of azimuth angles in an angular range of 0-2π and to gradually transmit the echo data to a memory of the security check system;
• instructing, by the thread responsible for movement control and data acquisition according to a current data acquisition state in a process of gradually acquiring the echo data, the thread responsible for imaging processing to read from the memory echo data within an azimuth angle corresponding to a current frame of image;
• performing three-dimensional imaging processing on the read echo data in the thread responsible for imaging processing to obtain three-dimensional imaging complex image data of the human body to be checked, and synchronously transmitting the three-dimensional imaging complex image data to the thread responsible for interface displaying and the thread responsible for target detection and recognition;
• processing the three-dimensional imaging complex image data in the thread responsible for interface displaying, and displaying a formed image obtained after the processing on a human-computer interaction interface;
• meanwhile,
• performing hidden article target detection on the three-dimensional imaging complex image data in the thread responsible for detection and recognition, identifying a detected article, and then feeding back a detection and identification result to the thread responsible for interface displaying, so that the thread responsible for interface displaying marks a position of the hidden article at the human body and a type of the hidden article on the formed image according to the detection and identification result;
• and
• returning to the stage of instructing, by the thread responsible for movement control and data acquisition according to a current data acquisition state in a process of gradually acquiring the echo data, the thread responsible for imaging processing to read from the memory echo data within the azimuth angle corresponding to the current frame of image, and repeating the above stages until the processing and the displaying of an Nth frame of image are completed according to a preset rule, to thereby obtain N frames of images covering the echo data of the human body to be checked at the plurality of azimuth angles in an angular range of 0-2π azimuth angles, with N being a positive integer.