Real-time processing framework of common-aperture active and passive hyperspectral 3D imaging

Wenjing He; Jian Hu; Yuwei Chen; Miaomiao Pan; Yunwei Zhu; Ruibin He; Chuanrong Li

doi:10.3788/IRLA20200249

Infrared and Laser Engineering, Volume. 50, Issue 2, 20200249(2021)

Real-time processing framework of common-aperture active and passive hyperspectral 3D imaging

Wenjing He¹, Jian Hu¹, Yuwei Chen², Miaomiao Pan¹, Yunwei Zhu¹, Ruibin He¹, and Chuanrong Li¹

¹Key Laboratory of Quantitative Remote Sensing Information Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China

²Department of Remote Sensing and Photogrammetry, Finnish Geospatial Research Institute, 02430, Finland

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Figures & Tables(8)

Fig. 1. [in Chinese]

Fig. 2. [in Chinese]

Fig. 3. [in Chinese]

Fig. 4. [in Chinese]

Table 1. [in Chinese]

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Table 1. [in Chinese]

Functional modules	Subfunction calling		Time/s	Time rate
Functional modules	Subfunciton	Call counts	Time/s	Time rate
Rotation matrix calculation	MatrixTransCal	666	0.03	0.44%
Geodetic Coordinate calculation	GeoCoorCal	266365	3.32	42.95%
Gauss-Kruger projection	GaussPrj	243085	1.11	14.30%
Elements of exterior erientation calculation	ExtOritCal	3325	0.14	1.76%
Elevation interpolation	AltiInterp	1	0.95	12.29%
Collinearity equation solution and fusion	FrontPrj	5753553	2.19	28.26

Table 2. [in Chinese]

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Table 2. [in Chinese]

Functional modules	Module lable	LUT	FF	DSP	BRAM	Software time/s	Hardware time/s	Software power/W	Hardware power/W	Speedup rate
Rotation matrix calculation	M1	3%	1%	1 %	1%	0.034	0.007	1.836	1.351	4.86%
Geodetic coordinate calculation	M2	86%	48%	46%	8%	3.32	0.2	2.154	1.739	16.60%
Gauss-Kruger projection	M3	36%	46%	56%	14%	1.1	0.05	2.087	1.68	22.00%
Elements of exterior orientation calculation	M4	51%	24%	37%	19%	0.137	0.025	1.975	1.614	5.48%
Elevation interpolation	M5	8%	2%	13%	0	0.95	0.06	1.757	1.372	15.83%
Collinearity equation solution and fusion	M6	22%	12%	19%	2%	2.19	0.19	1.869	1.454	11.53%

Table 3. [in Chinese]

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Table 3. [in Chinese]

Solutions	Partitioning code	LUT	FF	DSP	BRAM	Time/s	Power/W	Speedup rate
S1	010011	89%	62%	78	10%	1.721	8.003	4.61%
S2	110011	92%	63%	79%	11%	1.694	8.848	4.68%
S3	010000	59%	48%	46%	8%	4.811	6.143	1.65%
S4	100000	3%	1%	1%	1%	7.904	6.073	1.00%
S5	000001	22%	12%	19%	2%	5.731	6.144	1.38
S6	000000	0	0	0	0	7.931	5.228	1.00%

Table 4. [in Chinese]
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Table 4. [in Chinese]
Design scheme Processors Processor numbers Processing rate/MB·s⁻¹ Power/W
SOPC ZYNQ-7020 1 chip 22.37 8.003
FPGA+DSP FPGA：XC7K420T DSP：TMS320C6678 FPGA:1 chip DSP:1 chip 15.6 17.2

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Wenjing He, Jian Hu, Yuwei Chen, Miaomiao Pan, Yunwei Zhu, Ruibin He, Chuanrong Li. Real-time processing framework of common-aperture active and passive hyperspectral 3D imaging[J]. Infrared and Laser Engineering, 2021, 50(2): 20200249

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