The nonuniformity noise in the infrared focal plane is a major factor which limits the quality of infrared image.By analyzing the traditional high pass filtering algorithm and two of its improved correction methods,a new improved adaptive correction method based on bilateral filter is presented.A second correction matrix which is derived from the bilateral filter coefficient matrix is introduced.This matrix can distinguish edges of the scene from the difference image of the original image and bilateral filtering image,and inhibit them adaptively to make the correction parameters more accurate.In experimental part,the new algorithm is compared with the other two improved algorithms by correcting the same video sequence added with simulated noise and the same images with real uniformity to prove that it can achieve a better effect of correction.