Laser & Optoelectronics Progress, Volume. 55, Issue 6, 061201(2018)
Analysis and Correction of Coded Pixel Distortion in Coded Aperture Imaging Spectrometer
Fig. 4. Correspondence of DMD and the detector. (a) In ideal condition; (b) in fact condition
Fig. 7. Hollow square calibration pattern with the fringe width of 8 pixel loaded on DMD
Fig. 10. Comparison diagram of the effect. (a) Effect of mean value; (b) detail of mean value; (c) effect of mid-value; (d) detail of mid-value
Fig. 12. Results after processing with each edge extraction operator. (a) Prewitt operator: threshold is 0.04; (b) Log operator: threshold is 2; (c) Log operator: threshold is 3; (d) Canny operator: threshold is 0.2
Fig. 14. Comparison of before and after correction. (a) Before correction; (b) after correction
Fig. 16. Comparison of the hollow square pattern with the fringe width of 4 pixel (a) before and (b) after correction
Fig. 17. Grid stripes with the side length of 8 pixel (a) before and (b) after correction; grid stripes with the side length of 16 pixel (c) before and (d) after correction
Fig. 19. Comparison of colorful dull image with 15 orders coding before and after correction. (a) Before correction; (b) after correction
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Dantong Zhu, Honghai Shen, Mingyu Yang, Cheng Chen, Tongling Nan. Analysis and Correction of Coded Pixel Distortion in Coded Aperture Imaging Spectrometer[J]. Laser & Optoelectronics Progress, 2018, 55(6): 061201
Category: Instrumentation, Measurement and Metrology
Received: Sep. 26, 2017
Accepted: --
Published Online: Sep. 11, 2018
The Author Email: Honghai Shen (shenhh@ciomp.ac.cn)