Assessing downscaling limits of spatial resolution for AWIFS and Landsat 8 data as compared to Liss IV

A. Chauhan; M.D. Denis; M. Kumar

doi:10.3990/2.389

Assessing downscaling limits of spatial resolution for AWIFS and Landsat 8 data as compared to Liss IV

A. Chauhan, M.D. Denis, M. Kumar

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

Downscaling spatial information has a certain limit. Change in resolution of input image from its original resolution either loses or gains information. To understand this limit accuracy of the downscaled information has to be assessed. This research assesses the downscaled information of AWiFS and LANDSAT 8 as compared and validated by LISS IV. A total of 200 sample points were collected using Systematic Random Sampling. The results showed that the overall accuracy for the supervised classification was 95% for LISS IV where Kappa statistics was 0.92. As the resolution LANDSAT 8 was reduced from 10% to 50% the overall accuracy varied from 84% to 73.5% with 0.79 to 0.65 Kappa coefficient. For AWiFS at the same reducing resolutions, the overall accuracy varied from 80% to 67% with 0.72 to 0.56 kappa coefficients. The results showed that the downscaling limits for AWiFS and LANDSAT8 are only 10% of their actual resolutions. Any downscaling beyond this limit will result in precious information being lost.

Original language	English
Title of host publication	Proceedings of GEOBIA 2016 : Solutions and synergies, 14-16 September 2016, Enschede, Netherlands
Editors	N. Kerle, M. Gerke, S. Lefevre
Place of Publication	Enschede
Publisher	University of Twente, Faculty of Geo-Information Science and Earth Observation (ITC)
Number of pages	6
ISBN (Print)	978-90-365-4201-2
DOIs	https://doi.org/10.3990/2.389
Publication status	Published - 14 Sept 2016
Externally published	Yes
Event	6th International Conference on Geographic Object-Based Image Analysis, GEOBIA 2016: Solutions & Synergies - University of Twente Faculty of Geo-Information and Earth Observation (ITC), Enschede, Netherlands Duration: 14 Sept 2016 → 16 Sept 2016 Conference number: 6 https://www.geobia2016.com/

Conference

Conference	6th International Conference on Geographic Object-Based Image Analysis, GEOBIA 2016
Abbreviated title	GEOBIA
Country/Territory	Netherlands
City	Enschede
Period	14/09/16 → 16/09/16
Internet address	https://www.geobia2016.com/

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10.3990/2.389

Chauan-Assessing Downscaling Limits Of Spatial Resolution-23Final published version, 490 KB

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GEOBIA 2016 : Solutions and Synergies., 14-16 September 2016, University of Twente Faculty of Geo-Information and Earth Observation (ITC): open access e-book
Kerle, N. (Editor), Gerke, M. (Editor) & Lefèvre, S. (Editor), 2016, Enschede: University of Twente, Faculty of Geo-Information Science and Earth Observation (ITC).
Research output: Book/Report › Book › Academic

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Chauhan, A., Denis, M. D., & Kumar, M. (2016). Assessing downscaling limits of spatial resolution for AWIFS and Landsat 8 data as compared to Liss IV. In N. Kerle, M. Gerke, & S. Lefevre (Eds.), Proceedings of GEOBIA 2016 : Solutions and synergies, 14-16 September 2016, Enschede, Netherlands University of Twente, Faculty of Geo-Information Science and Earth Observation (ITC). https://doi.org/10.3990/2.389

Chauhan, A. ; Denis, M.D. ; Kumar, M. / Assessing downscaling limits of spatial resolution for AWIFS and Landsat 8 data as compared to Liss IV. Proceedings of GEOBIA 2016 : Solutions and synergies, 14-16 September 2016, Enschede, Netherlands. editor / N. Kerle ; M. Gerke ; S. Lefevre. Enschede : University of Twente, Faculty of Geo-Information Science and Earth Observation (ITC), 2016.

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abstract = "Downscaling spatial information has a certain limit. Change in resolution of input image from its original resolution either loses or gains information. To understand this limit accuracy of the downscaled information has to be assessed. This research assesses the downscaled information of AWiFS and LANDSAT 8 as compared and validated by LISS IV. A total of 200 sample points were collected using Systematic Random Sampling. The results showed that the overall accuracy for the supervised classification was 95\% for LISS IV where Kappa statistics was 0.92. As the resolution LANDSAT 8 was reduced from 10\% to 50\% the overall accuracy varied from 84\% to 73.5\% with 0.79 to 0.65 Kappa coefficient. For AWiFS at the same reducing resolutions, the overall accuracy varied from 80\% to 67\% with 0.72 to 0.56 kappa coefficients. The results showed that the downscaling limits for AWiFS and LANDSAT8 are only 10\% of their actual resolutions. Any downscaling beyond this limit will result in precious information being lost.",

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Chauhan, A, Denis, MD & Kumar, M 2016, Assessing downscaling limits of spatial resolution for AWIFS and Landsat 8 data as compared to Liss IV. in N Kerle, M Gerke & S Lefevre (eds), Proceedings of GEOBIA 2016 : Solutions and synergies, 14-16 September 2016, Enschede, Netherlands. University of Twente, Faculty of Geo-Information Science and Earth Observation (ITC), Enschede, 6th International Conference on Geographic Object-Based Image Analysis, GEOBIA 2016, Enschede, Netherlands, 14/09/16. https://doi.org/10.3990/2.389

Assessing downscaling limits of spatial resolution for AWIFS and Landsat 8 data as compared to Liss IV. / Chauhan, A.; Denis, M.D.; Kumar, M.
Proceedings of GEOBIA 2016 : Solutions and synergies, 14-16 September 2016, Enschede, Netherlands. ed. / N. Kerle; M. Gerke; S. Lefevre. Enschede: University of Twente, Faculty of Geo-Information Science and Earth Observation (ITC), 2016.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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N2 - Downscaling spatial information has a certain limit. Change in resolution of input image from its original resolution either loses or gains information. To understand this limit accuracy of the downscaled information has to be assessed. This research assesses the downscaled information of AWiFS and LANDSAT 8 as compared and validated by LISS IV. A total of 200 sample points were collected using Systematic Random Sampling. The results showed that the overall accuracy for the supervised classification was 95% for LISS IV where Kappa statistics was 0.92. As the resolution LANDSAT 8 was reduced from 10% to 50% the overall accuracy varied from 84% to 73.5% with 0.79 to 0.65 Kappa coefficient. For AWiFS at the same reducing resolutions, the overall accuracy varied from 80% to 67% with 0.72 to 0.56 kappa coefficients. The results showed that the downscaling limits for AWiFS and LANDSAT8 are only 10% of their actual resolutions. Any downscaling beyond this limit will result in precious information being lost.

AB - Downscaling spatial information has a certain limit. Change in resolution of input image from its original resolution either loses or gains information. To understand this limit accuracy of the downscaled information has to be assessed. This research assesses the downscaled information of AWiFS and LANDSAT 8 as compared and validated by LISS IV. A total of 200 sample points were collected using Systematic Random Sampling. The results showed that the overall accuracy for the supervised classification was 95% for LISS IV where Kappa statistics was 0.92. As the resolution LANDSAT 8 was reduced from 10% to 50% the overall accuracy varied from 84% to 73.5% with 0.79 to 0.65 Kappa coefficient. For AWiFS at the same reducing resolutions, the overall accuracy varied from 80% to 67% with 0.72 to 0.56 kappa coefficients. The results showed that the downscaling limits for AWiFS and LANDSAT8 are only 10% of their actual resolutions. Any downscaling beyond this limit will result in precious information being lost.

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BT - Proceedings of GEOBIA 2016 : Solutions and synergies, 14-16 September 2016, Enschede, Netherlands

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A2 - Gerke, M.

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Chauhan A, Denis MD, Kumar M. Assessing downscaling limits of spatial resolution for AWIFS and Landsat 8 data as compared to Liss IV. In Kerle N, Gerke M, Lefevre S, editors, Proceedings of GEOBIA 2016 : Solutions and synergies, 14-16 September 2016, Enschede, Netherlands. Enschede: University of Twente, Faculty of Geo-Information Science and Earth Observation (ITC). 2016 doi: 10.3990/2.389

Assessing downscaling limits of spatial resolution for AWIFS and Landsat 8 data as compared to Liss IV

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Research output

GEOBIA 2016 : Solutions and Synergies., 14-16 September 2016, University of Twente Faculty of Geo-Information and Earth Observation (ITC): open access e-book

Cite this