论文标题
通过更改的电子衍射模式的电子衍射模式的有损压缩
Lossy Compression of Electron Diffraction Patterns for Ptychography via Change of Basis
论文作者
论文摘要
PtyChography是一种计算成像技术，在过去的五十年中，X射线和电子显微镜群落中的流行程度上升。取得成功的原因之一是开发新的高性能电子探测器，其动态范围和读数速度提高，这对于成功应用该技术都是必需的。尽管计算能力取得了进步，但处理记录的数据仍然是一项艰巨的任务，数据速率的增长使所得数据集的大小成为整个过程的瓶颈。在这里，我们提出了对电子衍射模式有损压缩方法的研究，该模式保留了ptychographic重建的必要信息，但导致数据集大小降低了三到四个数量级。我们将几种压缩方法应用于模拟和实验数据 - 所有这些都有令人鼓舞的结果。
Ptychography is a computational imaging technique that has risen in popularity in the x-ray and electron microscopy communities in the past half decade. One of the reasons for this success is the development of new high performance electron detectors with increased dynamic range and readout speed, both of which are necessary for a successful application of this technique. Despite the advances made in computing power, processing the recorded data remains a challenging task, and the growth in data rate has made the size of the resulting datasets a bottleneck for the whole process. Here we present an investigation into lossy compression methods for electron diffraction patterns that retain the necessary information for ptychographic reconstructions, yet lead to a decrease in data set size by three or four orders of magnitude. We apply several compression methods to both simulated and experimental data - all with promising results.
