Journal of Glaciology and Geocryology

Precision comparison of different offset-tracking methods at sub-pixel level for glacier velocity study

Zhibin YANG, Gang LI, Yanting MAO, Xiaoman FENG, Zhuoqi CHEN

Journal of Glaciology and Geocryology, 2024, 46(3): 806-818. DOI: 10.7522/j.issn.1000-0240.2023.0174

图像对		COSI-Corr		autoRIFT		CCF-O		NCC
图像对		NS	EW	NS	EW	NS	EW	NS	EW
0706-0716	校正前	0.0536	0.0464	0.0536	0.0454	0.0905	0.0754	0.1107	0.0945
0706-0716	校正后	-	-	0.0500	0.0412	0.0899	0.0748	0.1093	0.0948
0711-0721	校正前	0.0457	0.0383	0.0525	0.0452	0.0800	0.0825	0.0920	0.0929
0711-0721	校正后	-	-	0.0445	0.0393	0.0790	0.0806	0.0909	0.0914
0716-0726	校正前	0.0453	0.0405	0.0504	0.0456	0.0842	0.0808	0.0932	0.0894
0716-0726	校正后	-	-	0.0431	0.0397	0.0834	0.0787	0.0928	0.0885
整体	校正前	0.0477	0.0417	0.0519	0.0454	0.0845	0.0798	0.0976	0.0922
整体	校正后	-	-	0.0454	0.0400	0.0837	0.0782	0.0966	0.0915

Table 3 RMSE （px） before and after correction for Petermann Glacier

Other figure/table from this article

Fig. 1 Petermann （left） and Kangerlussuaq （right） glaciers and image coverage area
Table 1 Sentinel-2 image pairs parameters
Fig. 2 Flow chart
Fig. 3 pre-set offset fields
Fig. 4 Petermann （a） and Kangerlussuaq （b） offset-tracking results
Table 2 RMSE （px）
Fig. 5 Scatter plot of the fitting
Table 4 RMSE （px） before and after correction for Kangerlussuaq Glacier
Fig. 6 Comparison of the bicubic kernels and the sinc function
Table 5 Algorithmic efficiency