Compressed High-Speed Imaging

Compressed high-speed imaging can capture a two-dimensional transient scene in a single image acquisition. It endows off-the-shelf CCD/CMOS cameras with at least one order of magnitude improvement in imaging speed. Combining optical engineering and image reconstruction techniques, compressed high-speed imaging consists of hardware encoding with customized system designs and software decoding with advanced algorithms. This rapidly evolving field has received increasing attention because of its attractive ability to cost-efficiently visualize transient events at their time of occurrence. This chapter surveys fundamental concepts, operating principles, and representative imaging modalities in compressed high-speed imaging. Hardware encoding is categorized into dynamic encoding and static encoding with temporal shearing. Software decoding is grouped into analytical-modeling-based approaches and deep-learning-based approaches. Finally, prospects in this field are provided for both technological advancement and potential applications.