Stępień P, Muhamad R K, Blinder D, Schelkens P, Kujawińska M
Opt Express. 2020 Sep 14;28(19):27873-27892. doi: 10.1364/OE.398598.
Image plane off-axis holograms (IP-OAH) are the most common data captured in digital holographic microscopy and tomography. Due to increasing storage and data transmission requirements, lossy compression of such holograms has been subject of earlier investigations. However, hologram compression can not be allowed to hinder the metrological capabilities of the measurement technique itself. In this work, we present lossy and lossless IP-OAH compression approaches that are based on conventional compression codecs, but optimized with regard to bandwidth of the signal. Both approaches outperform respective conventional codecs, while the lossy approach is shown to uphold the accuracy of holographic phase measurements.
图像平面离轴全息图（IP-OAH）是数字全息显微镜和断层扫描中最常见的数据采集形式。由于存储和数据传输需求不断增加，此类全息图的有损压缩已成为早期研究的主题。然而，全息图压缩不能妨碍测量技术本身的计量能力。在这项工作中，我们提出了基于传统压缩编解码器的有损和无损IP-OAH压缩方法，但针对信号带宽进行了优化。两种方法均优于各自的传统编解码器，同时有损方法被证明能够保持全息相位测量的准确性。
