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小波消噪在微弱信号检测中的应用 被引量:24
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作者 张毅 杨秀霞 《微计算机信息》 北大核心 2006年第01S期113-114,221,共3页
从信号去噪的角度对小波变换作了分析,并且对用非线性小波从噪声中提取有用信号的算法作了对比研究,给出了几种方法的综合方法——变阈值消噪方法,以得到更好的消噪效果。应用对微弱检测信号的仿真试验验证了变阈值消噪算法的优越性。
关键词 小波 微弱信号检测 变阈值消噪
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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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