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All-optical Karhunen-Loeve transform using MMI couplers for image processing applications

In this study, we present a method for all-optical image compression using all-optical Karhunen-Loeve transform (KLT). The KLT was designed in all-optical domain using only one multimode interference (MMI) coupler. The Karhunen-Loeve transform (KLT) is very attractive for image processing applicaons due to its computing efficiency, residual correlation, and rate distortion criteria benefits. |