ETDMS: Efficient two-stage diffusion model for accelerated SEM image super-resolution

IF 2 3区 工程技术 Q2 MICROSCOPY
Xuecheng Zhang , Zixin Li , Bin Zhang , Wenchao Meng , Yuefei Zhang , Chaojie Gu , Xianjue Ye , Ze Zhang
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引用次数: 0

Abstract

The scanning electron microscope (SEM) is a crucial tool for characterizing material microstructures, and it is renowned for its high resolution and depth of field. However, SEM image quality is affected by the scanning speed and resolution settings. When using SEM to capture fast-changing dynamic processes and other specific tasks, maintaining high image quality while using fast scanning mode is often tricky. To address these challenges, this paper introduces introduce an efficient two-stage diffusion model for accelerated SEM image super-resolution named ETDMS. The image denoising and super-resolution were divided into independent tasks based on SEM imaging principles and completed in two separate stages. Specifically, in Stage 2, a conditional lightweight encoder–decoder architecture SR network is proposed to replace the large U-Net in the traditional diffusion model and combine it with accelerated sampling technology to improve image generation efficiency. Experimental results prove that compared with previous super-resolution methods, the images generated by ETDMS significantly improve evaluation parameters, subjective visual quality, and detail generation.
ETDMS:加速扫描电镜图像超分辨率的高效两级扩散模型
扫描电子显微镜(SEM)是表征材料微观结构的重要工具,以其高分辨率和景深而闻名。然而,扫描电镜图像质量受扫描速度和分辨率设置的影响。当使用SEM捕捉快速变化的动态过程和其他特定任务时,在使用快速扫描模式的同时保持高图像质量通常是棘手的。为了解决这些问题,本文引入了一种有效的加速扫描电镜图像超分辨率的两阶段扩散模型——ETDMS。基于扫描电镜成像原理,将图像去噪和超分辨率划分为独立任务,分两个阶段完成。具体而言,在第二阶段,提出了一种条件轻量级编码器-解码器架构SR网络,以取代传统扩散模型中的大型U-Net,并将其与加速采样技术相结合,提高图像生成效率。实验结果证明,与以往的超分辨率方法相比,ETDMS生成的图像在评价参数、主观视觉质量和细节生成方面都有显著提高。
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来源期刊
Ultramicroscopy
Ultramicroscopy 工程技术-显微镜技术
CiteScore
4.60
自引率
13.60%
发文量
117
审稿时长
5.3 months
期刊介绍: Ultramicroscopy is an established journal that provides a forum for the publication of original research papers, invited reviews and rapid communications. The scope of Ultramicroscopy is to describe advances in instrumentation, methods and theory related to all modes of microscopical imaging, diffraction and spectroscopy in the life and physical sciences.
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