Fig. 1. Simulate pixel binning

Fig. 2. Traditional pixel binning（left） and ‘Region’ pixel binning（right）

Fig. 3. Construction of pixel matrix

Fig. 4. Arranged by area（left） and adjacent arrangement（right）

Fig. 5. Fitting curve of camera background value and temperature

Fig. 6. Overall design framework for real-time pixel merging

Fig. 7. Simulation of 2_taps_4×4 pixel merger

Fig. 8. Experimental imaging devices

Fig. 9. Contrast images of pixel binning of wide and narrow field of view cameras

Fig. 10. SNR changes in 2×2 and 4×4 images of 5 experiments combining