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基于Lab VIEW的声发射信号小波阈值去噪研究 被引量:3
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作者 刘洋 赵志洋 王冬蕾 《气象水文海洋仪器》 2007年第4期16-19,23,共5页
虚拟仪器代表着目前测试仪器领域的发展方向。Lab VIEW语言是一种功能强大的仪器开发平台。对淹没在噪声中声发射信号的有效提取(去噪)是声发射信号处理技术的第一步,也是声发射信号处理的关键所在。本文介绍了基于小波变换的阈值去噪... 虚拟仪器代表着目前测试仪器领域的发展方向。Lab VIEW语言是一种功能强大的仪器开发平台。对淹没在噪声中声发射信号的有效提取(去噪)是声发射信号处理技术的第一步,也是声发射信号处理的关键所在。本文介绍了基于小波变换的阈值去噪方法。在Lab VIEW平台上,通过仿真试验.对声发射信号的几种阈值法的去噪结果进行比较,选出一种适合声发射信号去噪的阈值准则. 展开更多
关键词 虚拟仪器 小波变换阈值消噪
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Application of Image Fusion Methods to Cell Imaging Processing
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作者 李勤 代彩虹 +4 位作者 俞信 王苏生 张同存 曹恩华 李景福 《Journal of Beijing Institute of Technology》 EI CAS 1998年第4期412-417,共6页
Aim To fuse the fluorescence image and transmission image of a cell into a single image containing more information than any of the individual image. Methods Image fusion technology was applied to biological cell imag... Aim To fuse the fluorescence image and transmission image of a cell into a single image containing more information than any of the individual image. Methods Image fusion technology was applied to biological cell imaging processing. It could match the images and improve the confidence and spatial resolution of the images. Using two algorithms, double thresholds algorithm and denoising algorithm based on wavelet transform,the fluorescence image and transmission image of a Cell were merged into a composite image. Results and Conclusion The position of fluorescence and the structure of cell can be displyed in the composite image. The signal-to-noise ratio of the exultant image is improved to a large extent. The algorithms are not only useful to investigate the fluorescence and transmission images, but also suitable to observing two or more fluoascent label proes in a single cell. 展开更多
关键词 image fusion wavelet transform double thresholds algorithm denoising algorithms living cell image
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