Effect of pixel active area shapes on microscanning based infrared super-resolution imaging

Sun Mingjie; Yu Kanglong

Super-resolution (SR) imaging is a technology based on oversampling to reduce the aliasing and increase the image resolution. Pixel active area (PAA) model is essential in SR related research. The difference of MTF with the widely used square model and the Zshape model we proposed was calculated to simulate the practical infrared focal plane array (IRFPA) production. The cause of the difference was analyzed. Furthermore, a hypothesis was proposed, which the smaller the difference between the closest and the farthest distances from the PAA boundaries to the pixel center, the greater the MTF of IRFPA will be. Different PAA shapes were discussed and the MTFs of these shapes were calculated. The calculation results verify the hypothesis we proposed. These results also show that the circle PAA is the most ideal model and it should be used as a reference for IR FPA design.

1. Institution of Opto-electrionics Technology,Beihang University,Beijing 100191,China

Received Date: 2014-05-07

Rev Recd Date: 2014-06-10

Publish Date: 2015-01-25

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Abstract: Super-resolution (SR) imaging is a technology based on oversampling to reduce the aliasing and increase the image resolution. Pixel active area (PAA) model is essential in SR related research. The difference of MTF with the widely used square model and the Zshape model we proposed was calculated to simulate the practical infrared focal plane array (IRFPA) production. The cause of the difference was analyzed. Furthermore, a hypothesis was proposed, which the smaller the difference between the closest and the farthest distances from the PAA boundaries to the pixel center, the greater the MTF of IRFPA will be. Different PAA shapes were discussed and the MTFs of these shapes were calculated. The calculation results verify the hypothesis we proposed. These results also show that the circle PAA is the most ideal model and it should be used as a reference for IR FPA design.

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Reference (27)

[1]
[2]	J M Wiltse, J L Miller. Imagery improvements in staring infrared imagers by employing subpixel microscan [J]. Opt Eng, 2005, 44(5): 056401.
[3]
[4]	A Bergeron, L L Noc, B Tremblay, et al. Flexible 640 x 480 pixel infrared camera module for fast prototyping [C]// Proc SPIE, 2009, 7481: 74810L.
[5]
[6]	L L Noc, D Dufour, M Terroux, et al. Towards a very high-resolution infrared camera core [C]//Proc SPIE, 2011, 8012: 80123P.
[7]	R R Schultz, R L Stevenson. Extraction of high-resolution frames from video sequences [J]. IEEE Transactions on Imaging Processing, 1996, 5(6): 996-1011.
[8]
[9]	K M Hock. Effect of oversampling in pixel arrays[J]. Opt Eng, 1995: 34(5): 1281-1288.
[10]
[11]	J C Gillete, T M Stadtmiller, R C Hardie. Aliasing reduction in staring infrared imagers utilizing subpixel techniques [J]. Opt Eng, 1995, 34(11): 3130-3137.
[12]
[13]	O Hadar, G D Boreman. Oversampling requirements for pixelated-imager systems[J]. Opt Eng, 1999, 38(5): 782-785.
[14]
[15]
[16]	K Krapels, R Driggers, R Vollmerhausen, et al. Performance comparison of rectangular (four-point) and diagonal (twopoint) dither in undersampled infrared focal plane array imagers[J]. App Opt, 2011, 40(1): 71-84.
[17]	J L Miller, J M Wiltse. Benefits of microscan for staring infrared imagers[C]//Proc SPIE, 2004, 5407: 127-138.
[18]
[19]
[20]	Z Wang, C E Glazowski, J M Zavislan. Modulation transfer function measurement of scanning reflectance microscopes[J]. J Bio Opt, 2007, 12(5): 051802.
[21]	X Wang, J Zhang, H Chang. The effect of fill factor of infrared FPA sensor on microscanning imagery quality [C]// Proc SPIE, 2005, 5640: 417-424.
[22]
[23]
[24]	X Wang, H Hua. Theoretical analysis for integral imaging performance based on microscanning of a microlens array[J]. Opt Lett, 2008, 33(5): 449-451.
[25]	Y Li, F Lilley, D Burton, et al. Evaluation and benchmarking of a pixel-shifting camera for superresolution lensless digital holography[J]. App Opt, 2010, 49(9): 1643-1650.
[26]
[27]	X Sui, L Bai, Q Chen, et al. Influencing factors of microscanning performance based on flat optical component[J]. Chin Opt Lett, 2011, 9(5): 052302.

Effect of pixel active area shapes on microscanning based infrared super-resolution imaging

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