Imagery refers to raster based datasets acquired from sensors on satellites or aircraft.

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Does anyone know a way to do a supervised classification on a google maps image to show only hedgerows? [closed]

I would like to then use the hedgerows by bringing it into QGIS as a layer. I need to know what software to use and the method to make such a layer? I would like to use a google earth image in Grass ...
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164 views

How to calculate raster statistics for each band in qgis

i need to calculate raster statistics for RGBN (4 channels, multiband image) rasters in QGIS. In Arcgis if you use "calculate statistics" in Arcatalog, statistics are calculated for every image band. ...
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78 views

Satellite Images for the Mediterranean Sea Oil Spill

I am looking to obtain free satellite images to detect oil spills in the Mediterranean sea. What sensors would be most appropriate for this task and where can I download this type of data?
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244 views

Free download NDVI images or raw satellite images

Could anyone provide a site to download NDVI images or raw satellite images of Sri Lank (Asia)for free for me to calculate the NDVI.
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394 views

Where to download 4-band NAIP imagery for California?

I've been trying to find orthoimages with 4 bands for a couple of counties in California. I managed to download some from the GeoSpatial Data Gateway from the USDA (NRCS), but they all only have 3 ...
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174 views

ESRI World Imagery (for Export)

I would like to download some of the ESRI World Imagery using this however when I try to add the layer to an online map I get "The layer, World Imagery (for Export), cannot be added to the map". I've ...
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96 views

Image classification from “Imagery” basemap ArcGIS 10.2

I'm trying to reclassify the coast of France and Spain into rocky or sandy categories. So far, I've been drawing polygons around the different patches, but want to try using image classification to ...
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89 views

How to avoid the ESRI basemap (Bing imagery) to update?

In my ongoing research, I intend to map transformations. That implies that, based on the ESRI basemap from Bing imagery, I draw certain features (in different layers) as they are today and as they are ...
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321 views

Creating a mosaic with gdalwarp - How to deal with no data and overlap

I want to create a mosaic of satellite imagery in .tiff format. I want to create an actual mosaic, not a vrt, because afterwards I will cut the image in to tiles that make sense for my users. Gdal ...
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63 views

Publishing mosiac datasets for ArcReader?

Has anyone had luck with publishing their own imagery into ArcReader 10.2 in a mosaic dataset? I have had success publishing the my own imagery in tiles but not in a mosaic form. Does anyone have ...
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189 views

What are people using for Site Location Maps without Bing?

The introduction of Bing Imagery with the release of ArcGIS 10.0 provided a fantastic means to very quickly produce Site Location Maps. Prior to its' introduction, I was using a GIS server connection ...
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58 views

Needed a free high resolution imagery for Las Cruces, New Mexico area

I'm Looking for a free download Imagery that is a very high resolution and the most recently like the past 3 months. I'm doing to produce a map where our new building being move into next year ? Is ...
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105 views

Satellite imagery options for small/medium sized countries?

I need to create land cover classifications for a couple countries in central/eastern Asia. The largest country is 50,000km^2 and the smallest is 10,000km^2. What are my options for recent imagery? At ...
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371 views

Convert from Mercator to transverse Mercator projection in C++?

I'm writing code to import images from a WMS server into some software. However, the software expects the images to be in transverse Mercator, but the WMS server provides it in Mercator. This ends up ...
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178 views

trouble with i.landsat.toar failing to identify satellite

I am trying to use the i.landsat.toar tool on L7 bands. I have tried to use both the MTL and MTLold, but no matter what I try, it returns "Failed to identify satellite." What am I doing wrong?
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42 views

How to determine the bands from an aerial image?

I received a set of aerial images taken with a Canon camera, I don´t know which kind of lens it has, or if it has been modified. After performing split image algorithm in Qgis, I get four new files: ...
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45 views

Problem with low quality tif

I have the problem with low quality raster. Now it looks like this: I would like to change this to looks like this: Im using ArcGIS, ArcScan. After some work with photoshop and reclassify with ...
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103 views

Adding Esri imagery to QGIS using “services.argisonline.com”

I'm trying to add this particular imagery in QGIS: http://services.arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer/3 But when i write the phyton srcipt i get the message that the URL ...
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44 views

Old imagery WMTS

I am looking for a web imagery tile service that provides old imagery, in the same vein as Google Earth's old imagery, but one that could be integrated into an OpenLayer or Leaflet map. Any idea ? ...
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53 views

georeferenced JPEG images not intalling in QGIS correctly

I am trying do add georeferenced aerial images (jpg files) to my QGIS. They do not install properly. I either get a grey rectangle or bands of colour (mostly blue) that appear where the image should ...
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27 views

Loss of Quality in UAV Imagery after building pyramids in ArcMap?

I am using arcgis 10.1 to plot and print maps with a background with UAV imagery. When I insert an image (Tiff format), it loses quality. The program prompts me to create pyramids, once this is ...
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57 views

TIF not showing UTM coordinates in world file

I have a lot of tif files (ortho imagery that came with Lidar data). Each tile has a .tif and .tfw but the world files (.tfw) have line 5 and 6 as numbers that aren't what I would expect as I was ...
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76 views

Saving a TIFF file with band names

Does anyone know if it's possible to add a TIFFTAG when saving a tiff file (I'm using the C/libtiff interface) that will give a name to each band? Some kind of per-band TIFFTAG_IMAGEDESCRIPTION is ...
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61 views

How to align hundreds of rasters quickly

I'm hoping to accurately align hundreds of aerial images that are slightly off-kilter. The images cover the same area on different dates (several acres). They contain identifiable features around ...
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How do I use Multispec for Landsat data?

It seems that I only can use the Clustering if I want to cluster only one band data.. If I open up more than 1 band (in one image), the cluster toolbar is disabled? optional: Is there any free ...
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64 views

ArcGIS Server Image Service from Mosaic Layer

I have successfully created an image service from a mosaic dataset using NAIP imagery. I would like to create another image service that displays the same area in NIR (4,3,2). I have created a mosaic ...
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180 views

Stacking Band ratio on Landsat 8?

I have a question about Landsat 8 I am going to work on... I am thinking about stacking all the bands however there are 15 m, 30m, and 100m Do you stack all together ? This is to give the end-user ...
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43 views

Satellite data between 1975-1985 in Brazil?

So I've been looking for satellite imagery to use for a project without any luck. I need images between 1975 and 1985 near the Roosevelt river in Brazil, from any satellite at any spatial/spectral ...
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352 views

Software for image orientation (aerial triangulation)

I'm trying find a software which can orient an UAV Imagery using GCPs (Ground control points in UTM Coordinates system) and Camera calibration (only camera focal length, p1,p2, k0, k1, k2, k3 and ...
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Best Way to Display Imagery as Background for Data Collection in the Field?

I'm running ArcPad 10 on a tablet in the field. I need to be able to import hi-res (sub meter) imagery to use as a background in order to help me define polygon boundaries for vegetation classes. So ...
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91 views

USA Historical Satellite Imagery for an Online Application

I am looking for different options to add historical satellite imagery to our online-based application. We currently incorporate Bing Maps into our application, but cannot get historical imagery. I ...
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82 views

Easy Guide to ESA satellite data?

Can anybody provide user friendly guidance to ESA datasets? What is available? When will new stuff be available? I struggle to work out what might be interesting amongst the many websites and their ...
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Custom imagery not converted correctly in web Bing format tile with Global Mapper?

I have Custom image and I converted to that to the web bing format tiles with the help of global mapper but that are not produce correct quad key in each tile. On the bing map quad key is starte like ...
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Looking for gis server for pictometry that can do bing-like “birds eye” tilted view and rotation

I need an open source gis server that can present these pictometry images, I guess they are also called 2.5D. The camera on a plane takes 5 shots, one orthogonal, other 4 in all directions. North, ...
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132 views

ESRI Basemaps - World Imagery: Is it possible to bring certain imagery into foreground (change the viewing order)?

I have a basemap loaded in a map in which there are 4 overlapping images. I would like to either turn off 3 of the 4 images or bring the one i want (marked with X n the screen capture) into the ...
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76 views

How to perform image classification with SemiAutomaticClassificationPlugin and BIP files?

I have multiband satellite images BIP format, Landsat TM/ETM containing 7/8 bands respectively along with a separate header file, some of them corrected by nearest neighbour classifier. I'm working ...
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222 views

Load MrSID file in QGIS 2.2 on Ubuntu 13.10

Is there a way to do this? I have tried a number of the write ups on this, and it appears that libgdal-mrsid-src no longer exists. Is there any other workaround? USDA NAIP imagery is sent as MrSID.
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376 views

ESRI imagery service that is WMS Compliant

I want to use the ESRI free online imagery service http://services.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer But I want a service that is WMS compliant. Is there a version of ...
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327 views

Raster satellite images for QGIS

When I try to apply a downloaded GIS satellite (t=rimage to Quantum, it doesn't seem to open properly. There must be a step-by step description on how this would be done effectively. Can anyone tell ...
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3answers
841 views

Looking for high resolution (1m or better) aerials for Turkey?

Would prefer free but under a couple hundred dollars is also doable. It would be nice to have actual tif, sid, etc. files but a WMS would also work. The WMS (bing and esri) I have been able to ...
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261 views

Assign Custom Band Combination To Image Catalogs In ArcGIS

I have an image catalog composed of 4 band rasters. I would like to use the same image catalog, and set custom renderers for a true color and false color combination and save each of those catalogs ...
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237 views

Recomputing footprints on old satellite imagery [duplicate]

I am trying to create an image service out of some 1976 satellite imagery. But first I need to get all of the no data cells out of my mosaic dataset. I have tried to recompute the footprints on my ...
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2answers
52 views

MODIS product MCD43A3 stating 16 periodicity but when downloadad I have files every 8 days

I'm downloading the MODIS derived Albedo 16-Day L3 Global 500 m resolution product. I expected to have a dataset for dates every 16 days. Instead I have datasets every 8 days as can be seen in the ...
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1answer
48 views

Importing World Map image, color issues?

I am having a hard time finding a world relief map with "lighter" ocean colors that will actually display as such in Arc. This is the image I download from the web but this is how it displays in ...
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1answer
55 views

Mapbox Satellite - Digitizing

As a part of project scope we have to deliver to the Client digitized data sets – some houses and roads. Can we use Mapbox Satellite global imagery layer [1] under Professional plan [2] for feature ...
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679 views

Inserting JPEG or similar into ArcGIS map?

I am trying to upload an image (jpeg or similar) into a map. It can be on the layout view or data view. I am using ArcMap 10.1.
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72 views

Satellites to retrieve UV bands

I want to retrieve some satellite images with UV bands,Bun I don't know which satellites are providing UV bands and We can freely download them? I have already downloaded Modis and Landsat images,But ...
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2k views

Possible to Clip Imagery Services Layers from ArcGIS Online?

The new Landscape layers such as the various Soil type imagery services look like a great resource. Does anyone know if it possible to clip out small areas of the Landscape imagery service since I ...
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52 views

Where can I find SRTM DSMs (digital surface model)?

I'm interested in finding a 30 meter DSM (digital surface model that includes canopy) from SRTM with the hope of creating a 30 meter canopy height model. I know that it can be done because the ...
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58 views

comparison of atmopsheric correction methods

I have noticed that dos methods for atmospheric corrections are in the section of radiometric correction (i.toar) on grass gis.Does that means that dos is a method doing radiometric and atmospheric ...