Fig. 1. Short-wave infrared imaging system

Fig. 2. Schematic diagram of a blind pixel with a Gaussian spot： (a)two-dimensional diagram；(b)three-dimensional diagram

Fig. 3. Pixel point of spot centroid

Fig. 4. The schematic diagram of shortwave 640 × 512 planar array InGaAs detector

Fig. 5. Load FPGA software system design

Fig. 6. Comparison before and after image correction：(a)original image； (b)post-corrected image

Fig. 7. Comparisons of blind pixels distribution before and after correction：(a)before correction；(b)after correction

Fig. 8. Comparison of non-uniformity distribution before and after correction：(a)before correction (NUN=0.079 5)；(b)after correction (NUN=0.006 7)

Fig. 9. Spot intensity distribution before and after correction：(a)original spot；(b)corrected spot

Fig. 10. Spot comparison before and after correction：(a)original spot；(b)corrected spot

Fig. 11. Influence of the blind pixel on the spot centroid localization accuracy：(a)1 pixel from the center of the spot；(b)the blind pixel is located at the center pixel of the spot

Fig. 12. Blind pixel point 1 pixel point from spot center

Fig. 13. Blind pixel point at the center of the spot

Fig. 14. Spot centroid positioning accuracy test

Fig. 15. Distance between centroid positions before and after image correction：(a)the distance between centroid positions in the X-axis direction；(b)the distance between centroid positions in the Y-axis direction

Fig. 16. Schematic diagram of load hardware structure

Fig. 17. Finished product

Fig. 18. Satellite opto-mechanical system