Abstract:The infrared detector has blind element because of the limitation of material and technology,it decreases the image quality of infrared thermal imaging system and influences the inspective rate and false alarm rate of target inspection system.Therefore,it is very important to conduct real-time and effective inspection for the blind element and make corresponding compensation.This article according to the particularity between the blind element in the images and surrounding points,adopts image target inspection method to inspect the blind element.Meanwhile,according to the time character of the blind element,separate the blind element from the point target area in the image.The purpose is to realize effective blind element inspection algorithm.