Method and device of acquiring feature information of detected object, apparatus and medium

A device of acquiring a feature information of a detected object, comprising:

• a motion control module configured to control the detected object to pass through a detection apparatus, wherein the detection apparatus is configured to scan and detect the detected object, and the detection apparatus comprises:
• a detection channel and an imaging system, the detected object enters and exits the detection apparatus through the detection channel in a first direction, and the imaging system is configured to scan and detect the detected object;
• a radiation scanning control module configured to control the imaging system to perform radiation scanning on the detected object;
• an image acquisition module configured to acquire a radiation scanning image of the detected object;
• and
• a feature information acquisition module configured to acquire a feature information of the detected object through the radiation scanning image,
• wherein the detected object comprises a first part, a detection part and a second part;
• and in a process of controlling the imaging system to perform radiation scanning on the detected object, the detection part is located between the first part and the second part in the first direction, and
• wherein the acquiring a feature information of the detected object through the radiation scanning image comprises:
• acquiring a first boundary line between the detection part and the first part and a second boundary line between the detection part and the second part through the radiation scanning image;
• and
• calculating a dimension between the first boundary line and the second boundary line in the first direction to acquire a dimension of the detection part in the first direction.