CAJ | 학술논문

　　图像去噪问题是一个古老的难题，也是当前研究的热点问题，而图像小波去噪算法在图像去噪方面虽然已取得了一定进步，但在这一领域仍然有许多问题需要研究，为了进一步提高图像去噪质量，改善图像视觉效果。在此通过在小波阀值萎缩法、基于混合模型的小波去噪法、小波去噪与其他算法相结合的三类方法中分别选用了三种典型算法即VisuSh?rink法、基于高斯混合模型小波去噪法、中值滤波与小波去噪相结合的算法，对当前基于小波变换图像去噪这三类典型问题进行了研究。研究表明对于单一的噪声，用相应某种算法，就可能取得较理想效果。而对于混合噪声，单独的一种算法取得的效果是比较差的，只有采用几种算法相结合才能取得较好的效果，因而在此也为图像去噪指明了以后的研究方向。
　　도상거조문제시일개고로적난제，야시당전연구적열점문제，이도상소파거조산법재도상거조방면수연이취득료일정진보，단재저일영역잉연유허다문제수요연구，위료진일보제고도상거조질량，개선도상시각효과。재차통과재소파벌치위축법、기우혼합모형적소파거조법、소파거조여기타산법상결합적삼류방법중분별선용료삼충전형산법즉VisuSh?rink법、기우고사혼합모형소파거조법、중치려파여소파거조상결합적산법，대당전기우소파변환도상거조저삼류전형문제진행료연구。연구표명대우단일적조성，용상응모충산법，취가능취득교이상효과。이대우혼합조성，단독적일충산법취득적효과시비교차적，지유채용궤충산법상결합재능취득교호적효과，인이재차야위도상거조지명료이후적연구방향。
Image denoising is an old problem,but a hot topic of current research. The image wavelet denoising algorithm has achieved some progress,but many problems still need to be solved in this area. In order to further improve the denoising quality and improve the image visual effects,three typical algorithms(VisuShrink algorithm,wavelet denoising method based on Gauss mixture model,and algorithm combining median filtering with wavelet denoising)are selected respectively from three methods:wavelet threshold shrinkage denoising method,wavelet denoising method based on mixture model,and combination of wavelet denoising algorithm and other algorithms. The current typical three types of image denoising methods based on wavelet transform are studied. The study result shows that,for a single noise,the corresponding some algorithm is possible to achieve ideal effect;for the mixed noise,only by combining several algorithms,can better results be achieved,since a single algorithm’ s effect is relatively poor. Therefore,the direction of the future development of image denoising research is pointed out in this pa?per.