Fig. 1. Schematic diagram of the CGEI scheme.

Fig. 2. Numerical simulation results of the unknown objects using different schemes, where SNR is presented together.

Fig. 3. Numerical simulation results (SNR) using different schemes for different compression ratios.

Fig. 4. SNR performance of edge information against SNRBD using different schemes.

Fig. 5. Schematic diagram of the CGEI scheme experimental system.

Fig. 6. Experimental results of the unknown object using different schemes, where SNR is presented together, and the resolution of results is 64×64.

Fig. 7. Experimental results (SNR) using different schemes for different compression ratios.

Fig. 8. Simulation results (SNR) of CSGI-45°, CSGI-So, CGEI-45°, and CGEI-So, where SNR is presented together.