An High Accuracy Image Mosaicking Approach of Optical Remote Sensing Satellite for Multi-Camera System

Yufeng Cheng; Shuying Jin; Mi Wang; Xueli Chang; Ying Zhu

doi:10.3788/AOS201737.0828003

Acta Optica Sinica, Volume. 37, Issue 8, 0828003(2017)

An High Accuracy Image Mosaicking Approach of Optical Remote Sensing Satellite for Multi-Camera System

Yufeng Cheng¹, Shuying Jin^1、*, Mi Wang¹, Xueli Chang², and Ying Zhu¹

¹ State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, Hubei 430079, China

² School of Resource and Environment Sciences, Wuhan University, Wuhan, Hubei 430079, China

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Figures & Tables(10)

Fig. 1. Sketch map of imaging and mosaicking of multi-camera system on GF-2

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Fig. 2. Sketch map of multi-camera on GF-1

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Fig. 3. Sketch map of homonymy points in the overlapping region of multi-camera system

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Fig. 4. Influence of elevation error

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Fig. 5. Stitched images of GF-1. (a) Global graph of the stitched image; (b) box 1 region; (c) box 2 region; (d) box 3 region

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Fig. 6. Stitched images of GF-2. (a) Global graph of the stitched image; (b) box 1 region; (c) box 2 region; (d) box 3 region

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Table 1. Specification of experimental data

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Table 1. Specification of experimental data

	Area	Imaging time	Sensor	Single image size /(pixel×pixel)	Terrain	Reference data
GF-1	Yangtze riverbasin	2016-05-16	WFV	12000×13400	Flatland, mountain elevationAverage: 50 mDifference: 3000 m	DOM: 15 mLandsat8 panchromatic imageDEM: 30 m GDEM2
GF-2	Yili	2016-06-22	HR	29200×27620	Flatland, mountain elevationAverage: 700 mDifference: 900 m	DOM: 0.3 m aerial imageDEM: 2 m aerial image

Table 2. Fitting accuracy evaluation for RFM of stitched images
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Table 2. Fitting accuracy evaluation for RFM of stitched images
Satellite Line /pixel Sample /pixel
Maximum error RMSE Maximum error RMSE
GF-1 0.0000237 0.0000132 0.0000258 0.0000143
GF-2 0.0003653 0.0002049 0.0003427 0.0002276

Table 3. Geometric accuracy evaluation of GF-1 stitched images

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Table 3. Geometric accuracy evaluation of GF-1 stitched images

Camera	Absolute accuracy (without ground control points) /pixel		Internal accuracy (with ground control points) /pixel
	Sample	Line	Sample	Line
Camera 1	2.275	-5.452	0.674	0.616
Camera 2	2.782	-5.561	0.779	0.722
Camera 3	2.153	-5.243	0.722	0.742
Camera 4	1.584	-5.289	0.806	0.742
Big virtual camera	1.985	-5.389	0.859	0.834

Table 4. Geometric accuracy evaluation of GF-2 stitched images

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Table 4. Geometric accuracy evaluation of GF-2 stitched images

Camera	Absolute accuracy (without ground control points) /pixel		Internal accuracy (with ground control points) /pixel
	Sample	Line	Sample	Line
Camera 1	32.310	22.463	1.894	1.965
Camera 2	32.459	26.675	1.883	1.971
Big virtual camera	32.450	24.001	2.012	2.183

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Yufeng Cheng, Shuying Jin, Mi Wang, Xueli Chang, Ying Zhu. An High Accuracy Image Mosaicking Approach of Optical Remote Sensing Satellite for Multi-Camera System[J]. Acta Optica Sinica, 2017, 37(8): 0828003

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