4K image acquisition method and infrared thermal imaging system

An infrared thermal imaging display system, comprising an infrared thermal image acquisition unit, a visible light image acquisition unit, an image combining unit, an XPR dithering unit, a control unit, and a display chip;

• wherein the infrared thermal image acquisition unit is used for obtaining infrared thermal images of the target scene;
• the visible light image acquisition unit is used for obtaining visible light images of the target scene;
• the image combining unit is used for extracting an image of the target area of the heat-emitting object from the obtained thermal images, and for combining the extracted image of the target area of the heat-emitting object with a visible light image to obtain the combined image;
• the controller of the control unit is used for projecting the combined image obtained by the image combining unit and the visible light image obtained by the visible light image acquisition unit using the display chip, and for controlling the XPR dithering unit when controlling the projection display, so that the display chip performs dithering;
• and
• during the completion of each XPR dithering cycle, the display chip displays at least 2 frames of displayed images, and the displayed multi-frame images comprise at least 1 frame of the combined image and at least 1 frame of visible light image.