Method and device for determining target infrared radiation intensity according to infrared image

The invention discloses a method and device for determining the infrared radiation intensity of a target according to an infrared image, and belongs to the technical field of aircraft design, and the method comprises the steps: generating an infrared image containing the target according to set parameters; determining a maximum pixel value and a minimum pixel value in the infrared image; according to a Planck black body radiation formula, calculating a first radiation brightness value of the maximum sensing temperature and a second radiation brightness value of the minimum sensing temperature; determining the radiance value of each pixel point in the infrared image according to the maximum pixel value, the minimum pixel value, the first radiance value, the second radiance value and the pixel value of each pixel point in the infrared image by adopting a linear difference algorithm; determining coordinates of a target pixel point corresponding to the target in the infrared image; and determining the target infr