CAJ | 학술논문

针对基于小波变换的阈值去噪方法仅适用于去除高斯白噪声，对于脉冲噪声得不到好的降噪效果的问题，提出了将基于高斯模型的小波变换算法与改进的中值滤波相结合的去噪方法。该方法能够有效去除高斯白噪声和脉冲噪声的混合噪声。仿真实验结果表明，结合算法去噪后图像的峰值信噪比和均方误差都比单一算法得到了改善，从而证明了该方法的有效性。
침대기우소파변환적역치거조방법부괄용우거제고사백조성，대우맥충조성득불도호적강조효과적문제，제출료장기우고사모형적소파변환산법여개진적중치려파상결합적거조방법。해방법능구유효거제고사백조성화맥충조성적혼합조성。방진실험결과표명，결합산법거조후도상적봉치신조비화균방오차도비단일산법득도료개선，종이증명료해방법적유효성。
The de-noising method by threshold based on wavelet transform is only used to remove Gaussian white noise and invalid to remove impulse noise. This paper proposes the de-noising method that combines wavelet transform based on Guass model algorithm and improved median filter. This method can effectively remove fixed noises of the Gaussian white noise and impulse noise. The simulation experiment shows that combined algorithm for de-noising images of the peak signal-noise ratio and mean square error than the single algorithm is improved, and the validity of this algorhhm is proved.