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针对红外成像系统在条纹噪声和非均匀性噪声干扰下盲元检测精度差的问题,提出了一种将小波滤波和“3σ”原则相结合的盲元检测新方法。首先用小波变换对含有条纹噪声和非均匀性噪声的图像进行预处理,再用“3σ”原则对其进行盲元检测。仿真结果表明该方法消除了噪声对盲元检测的影响,有效地解决了“3σ”原则检测精度低的问题。
Aiming at the problem of blind detection accuracy of infrared imaging system under the interference of fringe noise and non-uniform noise, a new blind detection method based on wavelet filtering and “3σ ” principle is proposed. Firstly, the image containing the fringe noise and non-uniform noise is preprocessed by wavelet transform, and then blindly detected by the principle of “3σ ”. Simulation results show that this method eliminates the influence of noise on blind detection and effectively solves the problem of low detection accuracy of “3σ ” principle.