FIG 2 (IMAGE) Compuscript Ltd Caption Fig. 2. Overview of the proposed PI-FPA. (a) PI-FPA including a LeFTP module and a lightweight network, (b) Net head and Net tail, (c) the phase retrieval process of the LeFTP module. Credit OEA Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.