突破衍射极限的可见光纳米图像重构边缘振荡智能去除方法

Intelligent edge oscillation removal method for visible light nano image reconstruction that breaks through diffraction limit

摘要:

当前的图像重构算法受到传统光学衍射效应的固有制约,成像的分辨率被限制,导致所获取的图像细节信息丢失、分辨率低下。而低分辨率图像本身所包含的信息有限,在重构过程中难免会在图像边缘引入振荡伪影,严重影响可见光纳米图像边缘复原质量。因此,设计突破衍射极限的可见光纳米图像重构边缘振荡智能去除方法。设计基于多分支网络的图像多分支重构方法,对可见光纳米图像实施多分支重构。设计图像融合网络,对多分支可见光纳米图像重构结果实施融合处理,以达到突破衍射极限的目的,从而为边缘振荡智能去除提供超分辨率原始数据,即暴露需要解决的伪影问题。设计基于坎尼算子与模糊滤波器的超分辨率重构可见光纳米图像复原方法,基于融合结果实现可见光纳米图像重构边缘振荡智能去除。实验测试结果表明,设计方法复原结果的边缘清晰,接近真实物理边界。设计方法的复原图像分辨率在5-10nm之间,突破了可见光波长的衍射极限30nm。设计方法的边缘振荡能量比(Edge Oscillation Energy Ratio, EOER)整体低于0.2,说明设计方法边缘振荡能量占比小,复原的可见光纳米图像边缘质量高。

Abstract:

Current image reconstruction algorithms are inherently constrained by traditional optical diffraction effects, which limit the resolution of imaging and result in the loss of detailed information and low resolution of the acquired images. However, low resolution images themselves contain limited information, which inevitably introduces oscillation artifacts at the edges of the image during the reconstruction process, which seriously affects the quality of visible light nanoimage edge restoration. Therefore, a visible light nano image reconstruction edge oscillation intelligent removal method is designed to break through the diffraction limit. Design an image multi branch reconstruction method based on multi branch networks to implement multi branch reconstruction of visible light nano images. Design an image fusion network to perform fusion processing on the reconstruction results of multi branch visible light nano images, in order to break through the diffraction limit and provide super-resolution raw data for intelligent removal of edge oscillations, that is, to expose the artifact problem that needs to be solved. Design a super-resolution reconstruction visible light nanoimage restoration method based on the Kanni operator and fuzzy filter, and achieve intelligent removal of edge oscillations in visible light nanoimage reconstruction based on fusion results. The experimental test results show that the edges of the restored results by the design method are clear and close to the real physical boundaries. The restored image resolution of the design method is between 5-10nm, breaking the diffraction limit of visible light wavelength of 30nm. The overall Edge Oscillation Energy Ratio (EOER) of the design method is below 0.2, indicating that the proportion of edge oscillation energy in the design method is small and the restored visible light nano image has high edge quality.