基于双边滤波器的红外图像条纹噪声消除算法

摘要

提出了一种新的消除红外图像中条纹噪声的方法。由于红外焦平面阵列中每列读出电路的偏置电压不同，导致红外图像中有明显的条纹状噪声。分析了读出电路偏置电压不均匀对红外成像的影响，提出了利用双边滤波器估计读出电路偏置电压的方法，并使用估计的偏置电压校正红外图像。基于实际红外图像的实验结果表明，提出的算法能够显著地消除红外图像中的条纹噪声。%This paper introduces a novel approach to eliminate stripe noise in infrared images. The differences between bias voltages in column readout circuit of infrared focal plane arrays result in strong stripe noise. This paper analyzes the influence of the column voltage bias on the readout signal and presents the approach to estimate the voltage biases using Bilateral filter. Then, infrared images are corrected by the estimated biases. The effectiveness of the method is shown according to the experimental results on real infrared images.