Chan Jacky C K, Mahjoubfar Ata, Chen Claire L, Jalali Bahram
Department of Electrical Engineering, University of California Los Angeles, Los Angeles, California, United States of America.
California NanoSystems Institute, Los Angeles, California, United States of America.
PLoS One. 2016 Jul 1;11(7):e0158201. doi: 10.1371/journal.pone.0158201. eCollection 2016.
We describe a physics-based data compression method inspired by the photonic time stretch wherein information-rich portions of the data are dilated in a process that emulates the effect of group velocity dispersion on temporal signals. With this coding operation, the data can be downsampled at a lower rate than without it. In contrast to previous implementation of the warped stretch compression, here the decoding can be performed without the need of phase recovery. We present rate-distortion analysis and show improvement in PSNR compared to compression via uniform downsampling.
