Color quality improvement of reconstructed images in color digital holography using speckle method and spectral estimation
Color quality improvement of reconstructed images in color digital holography using speckle method and spectral estimation
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DOI：
10.1016/j.optcom.2017.12.086
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发表时间：
2018-05
影响因子：
2.4
通讯作者：
H. Funamizu;Yusei Onodera;Y. Aizu
中科院分区：
文献类型：
--
作者：
H. Funamizu;Yusei Onodera;Y. Aizu
在这项研究中，我们报告的彩色数字全息再现图像的颜色质量改善散斑方法和频谱估计。在该技术中，物体被散斑场照射，然后产生物波，而平面波被用作参考波。对于三个波长，两个相干波的干涉图案被记录为图像传感器上的数字全息图。通过在面内方向上移动毛玻璃板来改变散斑场，并且获取多幅全息图以平均再现图像。在对多幅全息图的再现像进行平均处理后，利用维纳估计法得到再现像的光谱透射率曲线。用麦克白色卡胶片和洋葱细胞染色法对该方法的颜色重现性进行了验证和评价。
In this study, we report color quality improvement of reconstructed images in color digital holography using the speckle method and the spectral estimation. In this technique, an object is illuminated by a speckle field and then an object wave is produced, while a plane wave is used as a reference wave. For three wavelengths, the interference patterns of two coherent waves are recorded as digital holograms on an image sensor. Speckle fields are changed by moving a ground glass plate in an in-plane direction, and a number of holograms are acquired to average the reconstructed images. After the averaging process of images reconstructed from multiple holograms, we use the Wiener estimation method for obtaining spectral transmittance curves in reconstructed images. The color reproducibility in this method is demonstrated and evaluated using a Macbeth color chart film and staining cells of onion.