Image georectification and feature tracking toolbox: ImGRAFT

Messerli, A.; Grinsted, A.

doi:10.5194/gi-4-23-2015

Articles | Volume 4, issue 1

https://doi.org/10.5194/gi-4-23-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/gi-4-23-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 4, issue 1

Research article

|

11 Feb 2015

Research article |

| 11 Feb 2015

Image georectification and feature tracking toolbox: ImGRAFT

A. Messerli and A. Grinsted

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Views and downloads (calculated since 25 Aug 2014)

Month	HTML	PDF	XML	Total
Aug 2014	60	20	1	81
Sep 2014	55	28	2	85
Oct 2014	56	21	3	80
Nov 2014	54	34	13	101
Dec 2014	80	28	11	119
Jan 2015	39	68	5	112
Feb 2015	38	67	13	118
Mar 2015	24	52	5	81
Apr 2015	31	38	4	73
May 2015	17	34	5	56
Jun 2015	42	33	4	79
Jul 2015	45	50	10	105
Aug 2015	20	44	3	67
Sep 2015	14	29	4	47
Oct 2015	27	30	3	60
Nov 2015	47	42	0	89
Dec 2015	25	40	0	65
Jan 2016	40	47	1	88
Feb 2016	28	48	1	77
Mar 2016	15	18	0	33
Apr 2016	14	21	4	39
May 2016	10	19	1	30
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Aug 2016	9	12	0	21
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Oct 2023	38	21	2	61
Nov 2023	43	5	0	48
Dec 2023	33	24	2	59
Jan 2024	20	34	0	54
Feb 2024	13	28	0	41
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Apr 2024	48	18	5	71
May 2024	40	29	1	70
Jun 2024	57	23	4	84
Jul 2024	29	23	1	53
Aug 2024	42	6	2	50
Sep 2024	30	16	1	47
Oct 2024	31	24	4	59
Nov 2024	61	31	0	92
Dec 2024	30	24	4	58
Jan 2025	36	29	0	65
Feb 2025	64	21	2	87
Mar 2025	24	27	1	52
Apr 2025	49	21	1	71
May 2025	57	11	1	69
Jun 2025	76	18	2	96
Jul 2025	52	23	1	76
Aug 2025	61	25	0	86
Sep 2025	70	17	1	88
Oct 2025	65	40	2	107
Nov 2025	52	35	2	89

Cumulative views and downloads (calculated since 25 Aug 2014)

Month	HTML	PDF	XML	Total
Aug 2014	60	20	1	81
Sep 2014	55	28	2	85
Oct 2014	56	21	3	80
Nov 2014	54	34	13	101
Dec 2014	80	28	11	119
Jan 2015	39	68	5	112
Feb 2015	38	67	13	118
Mar 2015	24	52	5	81
Apr 2015	31	38	4	73
May 2015	17	34	5	56
Jun 2015	42	33	4	79
Jul 2015	45	50	10	105
Aug 2015	20	44	3	67
Sep 2015	14	29	4	47
Oct 2015	27	30	3	60
Nov 2015	47	42	0	89
Dec 2015	25	40	0	65
Jan 2016	40	47	1	88
Feb 2016	28	48	1	77
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Apr 2016	14	21	4	39
May 2016	10	19	1	30
Jun 2016	8	18	1	27
Jul 2016	13	20	3	36
Aug 2016	9	12	0	21
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Apr 2017	29	31	1	61
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Nov 2018	28	51	1	80
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Nov 2022	42	12	2	56
Dec 2022	41	19	2	62
Jan 2023	44	26	1	71
Feb 2023	28	23	0	51
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Apr 2023	20	37	0	57
May 2023	32	31	5	68
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Aug 2023	19	18	2	39
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Oct 2023	38	21	2	61
Nov 2023	43	5	0	48
Dec 2023	33	24	2	59
Jan 2024	20	34	0	54
Feb 2024	13	28	0	41
Mar 2024	19	28	1	48
Apr 2024	48	18	5	71
May 2024	40	29	1	70
Jun 2024	57	23	4	84
Jul 2024	29	23	1	53
Aug 2024	42	6	2	50
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Oct 2024	31	24	4	59
Nov 2024	61	31	0	92
Dec 2024	30	24	4	58
Jan 2025	36	29	0	65
Feb 2025	64	21	2	87
Mar 2025	24	27	1	52
Apr 2025	49	21	1	71
May 2025	57	11	1	69
Jun 2025	76	18	2	96
Jul 2025	52	23	1	76
Aug 2025	61	25	0	86
Sep 2025	70	17	1	88
Oct 2025	65	40	2	107
Nov 2025	52	35	2	89

Latest update: 29 Nov 2025

Short summary

The use of time-lapse cameras is becoming an ever more popular method of observing changes in the natural environment. This study provides an overview of the newly developed Image GeoRectification And Feature Tracking toolbox (ImGRAFT). The paper outlines the main function of the toolbox and describes each of the key processes needed to transform a pair of terrestrial time-lapse images into a velocity field. The tool is presented using a case study of glacier surface motion at Engabreen, Norway.