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|image=
[[image:exercise.png|50px|left|link=Exercise01|Exercise]]
6 KB (845 words) - 10:09, 24 April 2015
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::[[commons:Image:PD-icon.svg|PD-icon.svg]] (''public domain'') and
::a reworked version of [[commons:Image:Feather.jpg|Feather.jpg]] by [[commons:User:Za|Za]] (''GFDL'', first Common
381 B (54 words) - 14:12, 15 December 2008
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I grabbed this image and release it to the public domain, assuming that mediawiki does not impos
235 B (35 words) - 14:12, 15 December 2008
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I grabbed this image and release it to the public domain, assuming that Mediawiki does not impos
235 B (35 words) - 14:12, 15 December 2008
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...oolwiki z.B. per <nowiki>[[Bild:Sesamstrasse.jpg]]</nowiki> bzw. <nowiki>[[Image:Sesamstrasse.jpg]]</nowiki> (english-wiki) in den Sprachwikis angezeigt wer
Sobald auf einem Bild/Image geklickt wird, erscheinen die Bilddaten in der jeweiligen Sprache,
5 KB (701 words) - 08:47, 16 December 2008
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|Logo=[[Image:qgis.png]]
...t a QGIS tutorial for students. Follow this [[:Category:Remote sensing and image processing with open source software|link]].
2 KB (368 words) - 12:31, 27 February 2014
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...'', is a Geographic Information System ([[GIS]]) used for data management, image processing, graphics production, spatial modelling, and visualization of ma
2 KB (255 words) - 15:28, 18 February 2011
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[[Category:08 Image preprocessing]]
51 B (4 words) - 08:08, 23 May 2013
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...ldings or tree canopies <ref name=Liu10> Liu, J. G. & Mason, P. Essential Image Processing and GIS for Remote Sensing. (John Wiley & Sons, 2010).</ref>.
[[Image:Dem_grey.jpg|A DEM of Göttingen and the surrounding area. High elevation i
5 KB (681 words) - 14:40, 16 September 2014
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...QGIS_3.0_datasource.png|30px]] and then {{button|text=Add raster layer}} [[Image:QGIS_2.0_addrast.png|20px]] and select a virtual stack or a multiband raste
...onsidered. For '''Accuracy''' choose {{button|text=Actual (slower)}}. The image display is enhanced by a linear stretch with tail clipping adopted to the h
4 KB (619 words) - 09:36, 27 October 2021
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[[image:forest day banner.jpg]]
11 KB (1,574 words) - 09:50, 20 April 2015
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# Click the {{button|text=Add raster layer}} button [[Image:QGIS_2.0_addrast.png|20px]] and select the file ''sub_L71195024_02420050623
# Adjust the appearance of the image by right-clicking on the map in the [[TOC]] and selecting {{mitem|text=Prop
2 KB (315 words) - 14:49, 16 September 2014
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... aerial ortho photo map as background layer. Open the Datasource manager [[Image:QGIS_3.0_datasource.png|30px]] and establish a connection to a map server:
...rast.png|20px]] Open a UAV photo that has no spatial reference system (raw image coordinates): {{typed|text=geodata\uas\mavic_ortho_rgb.tif}}.
5 KB (794 words) - 20:23, 6 November 2021
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{{Rscontent}}[[Category:09 Image enhancement]]
* [[Image subtraction]]
2 KB (328 words) - 13:29, 21 October 2013
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Image texture is a quantification of the spatial variation of grey tone values. H
... grey levels for the specific input band in the '''Image minimum''' and '''Image maximum''' field. Check [Raster metadata] for correct values!
2 KB (322 words) - 21:20, 29 November 2020
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...a.zip'' from the ''Documents/General'' folder of the course Remote Sensing Image Processing with Open Source Software to a local folder of your laptop and e
625 B (97 words) - 11:30, 17 September 2014
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*GetMap - with parameters provided, returns a map image
# Open {{button|text=Data Source Manager}} [[Image:QGIS_3.0_datasource.png|30px]]
5 KB (834 words) - 12:03, 2 November 2022
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[[category:Image classification]]
[[category:11 Image classification]]
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* [[Remote sensing and image processing with open source software]]
4 KB (628 words) - 11:36, 3 April 2023
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...QGIS_3.0_datasource.png|30px]] and then {{button|text=Add raster layer}} [[Image:QGIS_2.0_addrast.png|20px]] and select a multiband raster file.
...text=split image}} into the search field to find the {{button|text=OTB --> Image Manipulation --> SplitImage}} tool and open it.
2 KB (335 words) - 09:56, 23 May 2022
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... inaccessible for topographic, security or political reasons. In satellite image analysis, we often encounter shadows and clouds that shade the areas undern
[[Image:SkiptFig_94.jpg|center|thumb|500px|Figure 1. Section of a “riparian fores
3 KB (512 words) - 11:59, 26 October 2013
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...stinguished in remote sensing imagery mainly from spectral reflectance and image texture. Of course, these criteria can not directly be converted into the a
12 KB (1,873 words) - 08:02, 28 October 2013
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...QGIS_3.0_datasource.png|30px]] and then {{button|text=Add raster layer}} [[Image:QGIS_2.0_addrast.png|20px]] and select the file ''/geodata/lucc/s2/Subset_
...ies (vegetation, soil, water) and relevant channels of the input multiband image.
3 KB (466 words) - 17:03, 14 June 2021
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...“classification guide” or “interpretation guide” when referring to image analysis. A field protocol describes in detail [[Sampling design and plot d
17 KB (2,464 words) - 07:47, 28 October 2013
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... International Journal of Remote Sensing 21:1461-1471.</ref>), a satellite image based sample of 10% (as employed by FAO in the global forest assessment to
5 KB (752 words) - 08:59, 28 October 2013
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*If remote sensing is applied, specify the [[classification system]] for image interpretation including interpretation key;
*A time table needs to be set up for field work and for image interpretation.
20 KB (3,158 words) - 10:34, 27 November 2014
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{{wide image-noborder|TOF.banner.jpg|1340}}
2 KB (353 words) - 08:52, 20 January 2016
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image:elev_angle.jpg|Elevation angle (with Zenith-, Nadir- and angle of inclinati
image:dir_angle.jpg|Azimuth/direction angle
990 B (136 words) - 06:51, 7 July 2011
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# Click the Photo2Shape tools icon [[Image:photo2shape_icon.png|20px]]
| [[Image:photolink3.png|thumb|left|300px|'''Figure A:''': [[QGIS]] 2.0 with ''Photo2
2 KB (273 words) - 10:50, 29 October 2014
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...ilters of corresponding colors, the images appear as one three-dimensional image.
...smallest spatial unit in a [[image resolution|digital image]]. A satellite image is made up of a matrix of pixels, each having its own vector of digital val
6 KB (966 words) - 10:45, 16 January 2014
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* [[Image classification]]
* What to do with the [[QGIS tutorial]] articles in the [[:category:Image classification]]? [[User:Lburgr|- Levent]] ([[User talk:Lburgr|talk]])
620 B (84 words) - 14:46, 18 June 2013
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[[Category:08 Image Preprocessing]]
112 B (11 words) - 11:57, 11 December 2012
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...y (reflectance) of the received signal. These data can be visualized in 2D-image but actually describes a 3D- cloud of detected points in space, a so called
...ng|A 2D- image of a scanned forest scene. In real space the left and right image border are directly next to each other.|center]]
7 KB (1,071 words) - 08:35, 12 March 2021
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...formation system (GIS) is not ad hoc possible. Consequently, for a spatial image analysis a transformation of the sensor geometry into a meaningfull geometr
= Image Coordinate Systems =
12 KB (1,781 words) - 11:49, 30 September 2020
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Orfeo Toolbox (OTB) is a free software that provides satellite image processing tools (classification, segmentation, object extraction). More in
328 B (45 words) - 06:57, 4 May 2012
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...esources outside forest in aerial photographs based on object orientated image classification (supervized classification) using eCognition (Trimble, Ger
...humb|right|400px|Color composite (NIR and RedEdge) of a RapidEye satellite image.]]
2 KB (316 words) - 05:57, 27 March 2013
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...ion single band image files need to be stacked and saved into a multi-band image:
[[Image:RemSens_Exercise03_1.png|thumb|left|800px|'''Figure A:''' The ''Merge'' dia
2 KB (267 words) - 08:24, 2 May 2016
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... on implementing specific [[Forest Definition|forest definitions]] during image classification. While this study takes forest and forest fragmentation as
5 KB (741 words) - 09:29, 15 October 2013
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[[Category:08 Image preprocessing]]
103 B (10 words) - 13:32, 21 October 2013
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| [[Image:trimble_front.png|thumb|center|x250px|'''Figure A''':''Trimble Juno 3B'' Fr
| [[Image:trimble_back.png|thumb|center|x250px|'''Figure B''':''Trimble Juno 3B'' Bac
9 KB (1,428 words) - 10:33, 29 October 2014
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* [[Image classification]]
* What to do with the [[QGIS tutorial]] articles in the [[:category:Image classification]]? [[User:Lburgr|- Levent]] ([[User talk:Lburgr|talk]])
585 B (68 words) - 09:53, 28 June 2013
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...d2008">Lillesand, T., Kiefer, R. W. & Chipman, J. 2008. Remote sensing and image interpretation. John Wiley & Sons.</ref>.
...d2008">Lillesand, T., Kiefer, R. W. & Chipman, J. 2008. Remote sensing and image interpretation. John Wiley & Sons.</ref>
4 KB (659 words) - 14:44, 2 February 2016
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#redirect [[category:Remote sensing and image processing with open source software]]
84 B (11 words) - 10:52, 26 February 2014
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...e protocols which are to be written in the course of the '''Remote sensing image processing with open source software''' lecture. The protocols will serve a
3 KB (508 words) - 15:29, 11 December 2013
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A multispectral image of the forest canopy
=Split multiband image into several raster images=
10 KB (1,669 words) - 12:21, 21 February 2019
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[[Category:11 Image classification]]
301 B (34 words) - 13:50, 8 December 2013
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...rial 2013/14]].<br/>In this article you learn how to georeference a raster image.''
...rial_utm_32_WGS84.tif'' from the ''geodata/raster/aerial/'' folder with an image processing program (e.g. Irfanview under Windows). Simply save the file und
4 KB (629 words) - 11:30, 17 September 2014
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...e search engine of the Processing Toolbox, type ''envelope'' and select '''Image Envelope''' under Geometry of OTB.
6 KB (915 words) - 13:49, 13 April 2018
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...rticipants from 14 different countries in front of the venue at IPB. Click image to enlarge or [[:File:DAAD_workshop_group.jpg|Download in high resolution.]
17 KB (2,403 words) - 09:50, 20 April 2015
- LIDAR Software and data structure
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...ere are different opinions to collect reference areas. In general, digital image classifiers, accuracy and quality measures require statistical based (proba
6 KB (853 words) - 07:00, 24 April 2017
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* Specify a multispectral image as Input Image.
* Specify directory and name for the Output image. Select the output data type {{button|text=uint 8}} from the pull-down list
956 B (141 words) - 13:37, 24 November 2020
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* In the {{button|text=Input Image List}} select a (or optional: several) multispectral images: '''mosaic_S2A_
...L2A_20200521T102031_N0214_R065_T32UNC_UNB_UPC.tif'' as {{button|text=Input image}}.
7 KB (1,116 words) - 13:12, 1 December 2020
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# Open image ''svm_classification.tif''
... 50%) we can compare the classification with the information of the Google image and look for errors in the classification (figure '''B''').
7 KB (1,113 words) - 08:57, 6 January 2020
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...esearch tools --> Regular points...}} with the extent of the multispectral image and a point spacing of {{typed|text=200}} meters.
=Object-based image analysis (OBIA) with QGIS and OTB processing plugin=
10 KB (1,511 words) - 09:54, 15 June 2021
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# Set the classified map as {{button|text=Input image}}.
2 KB (263 words) - 18:02, 28 June 2020
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# Load a multiband (B2,B3,B4,B5,B6,B7,B8,B8A,B11,B12) Sentinel-2 satellite image and display a false color composite (RGB = B8,B11,B5 =7,9,3). ([[Changing R
# Right click on the satellite image file name in Layers window. {{mitem|text=Layer CRS --> Set Project CRS from
3 KB (456 words) - 13:41, 24 November 2020
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= Pre-requisites of spatio-temporal image analysis =
* Calculate also the NDVI of the Sentinel-2 image '''SA2_2018-07-19.tif''' ('''image_date2''').
14 KB (2,103 words) - 14:33, 18 January 2021
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...ification key that needs to be developed under consideration of the actual image resolution. A simple example would be the estimation of forest cover by the
...he right figures examples of these alternatives are overlaid over the same image subset. Of course there are many more options and a methodological approach
13 KB (1,885 words) - 07:29, 15 December 2016
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Monteverdi is an open source remote sensing image processing software developed by CNES. The goal is to develop an easy to us
===Open an image===
2 KB (355 words) - 13:47, 4 June 2014
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[[image:Resource assessment hist and nested plot.png|thumb|center|500px|'''Figure A
[[image:Resource_assessment_specshares.png|thumb|center|500px|'''Figure B:''' Pie c
8 KB (1,218 words) - 11:51, 23 July 2014
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... the status and progress of logging and clearing operations at the time of image acquisition.
[[Image:windthrow1.png|250px|thumb|right|'''Figure A''': Clearing in a false color
6 KB (967 words) - 13:30, 21 June 2019
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[[Image:Dop_so_PCA_wi.png.png|250px|thumb|right|'''Figure A''': Digital orthophotos
...of the DTM overlaid by stand boundaries (white). Below: red green anaglyph image of the DTM.]]
11 KB (1,790 words) - 12:58, 16 September 2014
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[[Image:shadow_length.png|450px|thumb|right|'''Figure A''': Shadow length ''s'' and
[[Image:line_tower1.png|250px|thumb|right|'''Figure B''': Overhead line tower (220
6 KB (1,043 words) - 13:48, 7 July 2015
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[[image:Resource assessment hist and nested plot.png|thumb|center|500px|'''Figure A
5 KB (851 words) - 13:01, 23 July 2014
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...QGIS_3.0_datasource.png|30px]] and then {{button|text=Add raster layer}} [[Image:QGIS_2.0_addrast.png|20px]]. Select a single band raster file.
...ies --> Information}}. Report on the spatial reference system, size of the image in pixels (Width = columns and Height = rows), Pixel size and if a specific
1 KB (169 words) - 09:11, 27 October 2021
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...QGIS_3.0_datasource.png|30px]] and then {{button|text=Add raster layer}} [[Image:QGIS_2.0_addrast.png|20px]] and select a single or a multiband band raster
...ta is evenly divided into bins. The histogram shows how many pixels of the image fall into each of the bins (Figure '''B''')[[File: Qgis_histogram_singleban
1 KB (198 words) - 11:44, 2 November 2020
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# Click the {{button|text=Add raster layer}} [[Image:QGIS_2.0_addrast.png|20px]] and select a multiband raster with data type ''
...ynamic}} into the search field to find the {{button|text=Orfeo Toolbox --> Image Manipulation --> DynamicConvert}} tool.
1,006 B (160 words) - 09:22, 27 October 2021
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...mage:QGIS_3.0_datasource.png|30px]] and {{button|text=Add raster layer}} [[Image:QGIS_2.0_addrast.png|20px]] and select a multiband raster file.
...ick [[File:QGIS_file_select.png]] to choose a new file name for the subset image.
2 KB (282 words) - 09:57, 31 May 2021
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# Click the {{button|text=Add raster layer}} [[Image:QGIS_2.0_addrast.png|20px]] and select the file ''/geodata/raster/s2/Subse
...ope}} into the search field to find the {{button|text=OTB --> Geometry --> Image Envelope}} and open it.
819 B (131 words) - 14:20, 12 November 2018
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* Load a multiband Sentinel-2 satellite image (Level 2-A product) [[Changing Raster Layer Style]] to display a true color
* Zoom in to a cloudy part of the image and compare the extent of cloud and cloud shadow in both composites. Which
8 KB (1,266 words) - 11:05, 19 November 2020
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...pe {{typed|text=dimension}} and select '''DimensionalityReduction''' under Image Filtering of the Orfeo Toolbox.
* Under Inverse Output Image [optional] untick Open output file after running algorithm (See Screenshot
1 KB (193 words) - 20:12, 29 November 2020
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...ted from Blue, Red, Green and NIR band to receive a single band grey scale image.
# Load the input image
1 KB (218 words) - 14:52, 17 November 2018
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... Processing Toolbox, type '''Smoothing''' and select '''Smoothing''' under Image Filtering of the Orfeo Toolbox.
..." | [[file:Qgis_campus_pansharp.png|thumb|left|400px|'''Figure B:''' Input image: Sentinel-2 composite (RGB=B7,B6,B5) of campus north, University Göttinge
2 KB (245 words) - 20:18, 29 November 2020
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... Processing Toolbox, type '''Smoothing''' and select '''Smoothing''' under Image Filtering of the Orfeo Toolbox.
...r the Parameters tab, select a single band or a multiband file as '''Input Image'''.
2 KB (268 words) - 16:59, 14 June 2021
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The Sobel filter creates an image emphasising edges.
...sis.png|thumb|left|400px|'''Figure A:''' Input image: Sentinel-2 synthesis image based on 4 10m bands, (University Göttingen Campus North)]]
844 B (122 words) - 14:00, 15 November 2019
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...egment Detection application (LSD) detects locally straight contours in an image and was published by [http://www.ipol.im/pub/art/2012/gjmr-lsd/ Grompone et
...er: 0pt" | [[file:Qgis_goe_line.png|thumb|left|700px|'''Figure A:''' Input image: Sentinel-2 composite (RGB= B7,B6,B5) overlaid with detected line vectors
713 B (104 words) - 15:40, 18 November 2018
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..., Kurtosis) calculated on every pixel in the selected channel of the input image, over a specified neighborhood are called ''first-order'' textures.
The output image (Fig. B) is a multiband with 4 statistical moments per band in the order:
2 KB (281 words) - 20:31, 29 November 2020
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...can possibly be identified in multispectral feature space of the satellite image.
2 KB (291 words) - 08:50, 24 November 2020
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** a multiband '''input image''' to be classified and
...multiband reflectance file previously loaded into the QGIS canvas as input image.
12 KB (1,945 words) - 22:38, 30 June 2019
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...ox, type {{typed|text=smooth}} and select '''Smoothing (gaussian)''' under Image filtering of the Orfeo Toolbox.
...ype {{typed|text=watershed}} and select '''Watershed segmentation''' under Image Analysis of SAGA.
5 KB (810 words) - 13:26, 8 January 2018
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...can possibly be identified in multispectral feature space of the satellite image.
2 KB (294 words) - 13:08, 2 December 2020
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This filter computes the gradient magnitude of the image at each pixel.
474 B (70 words) - 14:26, 15 November 2019
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[[File:Emotion3_Postflight1.png|300px|Image:300 pixels]]
[[File:Emotion3_Postflight2.png|400px|Image:400 pixels]]
2 KB (308 words) - 15:36, 4 March 2019
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[[Category:Remote sensing and image processing with open source software]]
98 B (12 words) - 11:16, 25 October 2019
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...ile name in the '''Product Explorer'''. Right click {{button|text=Open RGB Image Window)}}. In the Profile drop-down list select '''Sentinel 2 MSI False Col
* In the ''Spatial Subset'' tab draw a box on top of the preview image and move it to your region of interest.
2 KB (328 words) - 11:32, 9 November 2020
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...image with a positional offset. It needs to be registered to the reference image. {{button|text=Open}} or drag and drop marked files from Windows File Explo
...e ''clip_ebee_ortho_align.tif'' in ToC. Right click {{mitem|text= Open RGB Image Window --> OK}}.
3 KB (415 words) - 20:25, 6 November 2021
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...vel-1C product name in Product Explorer. Right Click {{mitem|text=Open RGB Image Window --> Sentinel-2 MSI Natural Colors}}. {{button|text=OK}}.
...l-2A Output Product in Product Explorer. Right Click {{mitem|text=Open RGB Image Window --> Sentinel-2 MSI Natural Colors}}. {{button|text=OK}}.
3 KB (499 words) - 19:50, 29 November 2020
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* Right click '''Open 2 Image Window'''.
...t=View --> Synchronise Image View}} and {{mitem|text=View --> Synchronise Image Cursors}}is activated).
4 KB (632 words) - 13:06, 25 January 2021
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* Right click '''Open 2 Image Window'''.
...t=View --> Synchronise Image View}} and {{mitem|text=View --> Synchronise Image Cursors}}is activated).
6 KB (903 words) - 12:16, 25 January 2021
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* Specify a multispectral image as Input Image.
* Specify directory and name for the Output image.
914 B (133 words) - 07:26, 4 December 2020
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# Load a multiband (B2,B3,B4,B5,B6,B7,B8,B8A,B11,B12) Sentinel-2 satellite image and display a false color composite (RGB = B8,B11,B4 =7,9,3). ([[Changing R
# Right click on the satellite image file name in Layers window. {{mitem|text=Layer CRS --> Set Project CRS from
3 KB (460 words) - 04:27, 6 June 2022
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* In the {{button|text=Input Image List}} select one (or optional: several) multi-band raster (multispectral i
* Set an multiband image as {{button|text=Input image}}.
7 KB (1,086 words) - 05:41, 6 June 2022
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=Object-based image analysis (OBIA) with QGIS and OTB processing plugin=
* Select the input image: '''a multispectral Sentinel-2 image''' (data type uint16).
5 KB (701 words) - 20:46, 19 June 2021
