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Refocusing based on amplitude analysis in color digital holographic microscopy

机译:彩色数字全息显微镜中基于幅度分析的重新聚焦

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摘要

A refocusing criterion adapted to red-green-blue (RGB) digital holographic microscopy is established. It is applicable for both amplitude and phase objects. This color criterion is based on a monochromatic criterion, using the integrated modulus amplitude. Simulated RGB holograms show the value of having color information, even for colorless samples; in addition, the position of the focus plane along the optical axis is determined more accurately. Simulations take into account both the numerical apertures of lenses and noise during the holographic process. We also implement an algorithm exponentially reducing the computation time required for detecting the focus plane. The method is validated on experimental holograms.
机译:建立了适用于红-绿-蓝(RGB)数字全息显微镜的重新聚焦标准。它适用于幅度和相位对象。该颜色标准基于使用积分模量幅度的单色标准。模拟的RGB全息图显示了具有色彩信息的价值,即使对于无色样本也是如此。另外,聚焦平面沿光轴的位置被更精确地确定。模拟考虑了全息照相过程中透镜的数值孔径和噪声。我们还实现了一种算法,该算法以指数形式减少了检测焦平面所需的计算时间。该方法在实验全息图上得到验证。

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