唐山学院学报
唐山學院學報
당산학원학보
JOURNAL OF TANGSHAN COLLEGE
2014年
3期
48-49
,共2页
非下采样CT变换%自适应阈值%图像消噪
非下採樣CT變換%自適應閾值%圖像消譟
비하채양CT변환%자괄응역치%도상소조
non-subsampled contourlet transform%adaptive threshold%image denoising
针对CT变换缺少平移不变性会在图像消噪时产生伪 Gibbs 现象，提出了非下采样 CT变换与自适应阈值法相结合的图像消噪法。实验结果表明，采用非下采样 CT 变换方法能有效地消除图像噪声，保存图像的纹理细节，提升图像信噪比，消噪效果优于传统小波及CT消噪效果。
針對CT變換缺少平移不變性會在圖像消譟時產生偽 Gibbs 現象，提齣瞭非下採樣 CT變換與自適應閾值法相結閤的圖像消譟法。實驗結果錶明，採用非下採樣 CT 變換方法能有效地消除圖像譟聲，保存圖像的紋理細節，提升圖像信譟比，消譟效果優于傳統小波及CT消譟效果。
침대CT변환결소평이불변성회재도상소조시산생위 Gibbs 현상，제출료비하채양 CT변환여자괄응역치법상결합적도상소조법。실험결과표명，채용비하채양 CT 변환방법능유효지소제도상조성，보존도상적문리세절，제승도상신조비，소조효과우우전통소파급CT소조효과。
The author of this paper proposes an image de-noising method of non-subsampled CT transform combined with adaptive threshold to deal with the phenomenon that the lack of transla-tion invariance of CT transform can produce pseudo Gibbs in image denoising.Experiments show that the non-subsampled CT transform method can eliminate noise effectively,preserve image texture details,improve the image SNR,and that de-noising effect is better than that of tradi-tional CT and wavelet.
