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Quantitative phase imaging of biological cells and tissues using singleshot white light interference microscopy and phase subtraction method for extended range of measurement

机译:使用单身冲干扫描的生物细胞和组织的定量相成像,相对测量范围的相减法方法

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We present a single-shot white light interference microscopy for the quantitative phase imaging (QPI) of biological cells and tissues. A common path white light interference microscope is developed and colorful white light interferogram is recorded by three-chip color CCD camera. The recorded white light interferogram is decomposed into the red, green and blue color wavelength component interferograms and processed it to find out the RI for different color wavelengths. The decomposed interferograms are analyzed using local model fitting (LMF)" algorithm developed for reconstructing the phase map from single interferogram. LMF is slightly off-axis interferometric QPI method which is a single-shot method that employs only a single image, so it is fast and accurate. The present method is very useful for dynamic process where path-length changes at millisecond level. From the single interferogram a wavelength-dependent quantitative phase imaging of human red blood cells (RBCs) are reconstructed and refractive index is determined. The LMF algorithm is simple to implement and is efficient in computation. The results are compared with the conventional phase shifting interferometry and Hilbert transform techniques.
机译:我们为生物细胞和组织的定量相成像(QPI)呈现单次白光干扰显微镜。开发了一条公路白光干扰显微镜,并通过三芯片彩色CCD相机记录彩色白光干扰图。记录的白光干扰图被分解成红色,绿色和蓝色波长分量干涉图,并处理它以找出用于不同颜色波长的RI。使用用于从单个干涉图重建相位映射的本地模型拟合(LMF)“算法进行分析的分解干涉图。LMF是略微离轴的干扰测量QPI方法,该方法仅使用单个图像,因此它是快速准确。本方法对于动态过程非常有用,其中路径长度在毫秒水平下变化。从单个干涉图中,重建了人红细胞(RBC)的波长依赖性定量相成像,并确定折射率。该LMF算法易于实施,并且在计算中有效。结果与传统的相移干涉测量和Hilbert变换技术进行了比较。

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