RAW image radiation temperature measuring apparatus and method

The invention discloses a RAW image radiation temperature measuring method. The method comprises the following steps: a CCD camera outputting image data in a RAW format, and storing the data as a true color RGB image after linearity interpolation; arranging the exposure time of the CCD camera through RAW image gray scale signals obtained from the image data in the RAW format; and extracting a spectral color value of each channel from the true color RGB image; obtaining image detection data from ratios of the spectral color values to the exposure time; taking a conversion proportion coefficient, calibrated through a black-body furnace, between the image detection data and incident radiation intensity, as a calibration constant; through the CCD camera, continuously acquiring radiation images, and extracting spectral color signals and exposure time signals of any two channels in pixels R, G or B; and performing correction through the calibration constant to form correspondingly extracted monochromatic radiation intensity signals under the condition of two primary wavelengths, and according to a colorimetric temperature measurement principle, obtaining an image temperature and a radiation ratio. The temperature measuring apparatus provided by the invention comprises the CCD camera, a stiff rod endoscope, a network switch and a background server.