Disclosed is a method for detecting soft defective pixels of a thermal imaging camera. Outputting a representative pixel by performing median filtering on pixels in a predetermined area of the image of the thermal imaging camera by the median filter module; The bad pixel detection module configures a step of detecting a bad pixel of the image using a representative pixel output from the median filter module. According to the above-described method of detecting a soft defective pixel of the thermal camera, the contrast of the pixel is improved to the level of visual identification to calculate the intermediate value filter module and the intermediate value, and the comparator module is configured to detect the defective pixel by comparing each pixel. By doing so, it is possible to detect acquired defective pixels according to the aging of the thermal imaging camera, and also to be able to cope with statistical determination errors that determine the original defective pixels as normal pixels. As in the conventional method, it is not necessary to input a separate reference image for each thermal camera, and it detects and compensates for defective pixels by itself, which is convenient and has an effect that the accuracy of detection of defective pixels of an aging thermal camera is very high compared to the previous one.
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