CAJ | 학술논문

根据非下采样剪切波变换（non-subsample shearlet transform，NSST）在图像融合领域的优势和多聚焦图像的成像特点，将 NSST 运用于多聚焦图像融合。在 NSST 变换域中，利用方向信息测度能够突出图像边缘纹理特征以及降低图像噪声，将其运用在高频子带系数的融合规则中，并对传统的低频融合策略进行改进，将低频系数和高频系数的融合图像进行 NSST 的逆变换，得到融合图像。计算机仿真实验表明，相比于传统的剪切波变换的融合策略，本文提出的图像融合方法提高了图像的融合质量，增加了图像的信息量，并能降低图像噪声，具有一定的有效性和实用性。
근거비하채양전절파변환（non-subsample shearlet transform，NSST）재도상융합영역적우세화다취초도상적성상특점，장 NSST 운용우다취초도상융합。재 NSST 변환역중，이용방향신식측도능구돌출도상변연문리특정이급강저도상조성，장기운용재고빈자대계수적융합규칙중，병대전통적저빈융합책략진행개진，장저빈계수화고빈계수적융합도상진행 NSST 적역변환，득도융합도상。계산궤방진실험표명，상비우전통적전절파변환적융합책략，본문제출적도상융합방법제고료도상적융합질량，증가료도상적신식량，병능강저도상조성，구유일정적유효성화실용성。
Non-subsample shearlet transform (NSST)is suggested into the multi-focus image fusion,for its advantage in image fusion and the feature of multi-focus imaging.Orientation information measurement can highlight the edge texture characteristic and reduce the noise,so it is used in the fusion of high-frequency coeffi-cients.Therefore,the fusion image is brought out after the NSST inverse transformation is taken on the fusion of low-frequency and high-frequency coefficients.Simulation is carried out to prove the effectiveness and practi-cability the proposed technique,which illustrates that the proposed method can improve the quality of fusion im-ages and increase the information of fusion images,meanwhile,the noise of images is also decreased.