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Photonic time stretch is the key enabling technology for a wide variety of instruments with unparalleled single‐shot data acquisition performance at high throughput and continuous operation. These systems have established landmark performance in spectroscopy and imaging including flow‐through microscopy, velocimetry, lidar, and other measurements. The evolution of the original time‐stretch technique...
Image compression by the warped stretch transform is introduced, where the input image is reshaped by a signal-dependent mapping i.e. designed “warp kernel”. The warped image can be downsampled at a lower uniform rate for the same PSNR, effectively achieving reversible and context-aware non-uniform sampling.
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