Questions tagged [imagery]

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

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Availability of New Imagery [closed]

I am looking into purchasing the newest imagery for ArcMap. I know there are a few companies out there that are selling it but wanted to see what everyone else was using. I have recently looked into ...
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15 views

Tips for publishing imagery to offline mobile devices [closed]

I'm trying to provide my team with an ArcExplorer offline map, unfortunately it needs to cover a couple counties in area. I'm having trouble getting a basemap published for offline use. I was ...
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Combining two images one over other using ArcPy [closed]

I have to combine images from different satellites (with different spatial and spectral resolution) such that features of both are present in the final image. I am using ArcGIS. Please help me with ...
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1answer
20 views

ArcGIS Online and Nearmap Basemap Imagery

I am trying to get an exported Nearmap imagery as my basemap for an ArcGIS Online map. I have the Nearmap Image and it's respective georeference file (JPG File and JGW File). Is there a way to upload ...
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48 views

Image vertical pixel displacement in QGIS

I'm able to anticipate the Vertical pixel displacement of a picture (in order to param my camera before a shooting) with this math: [Sensor Readout Time (milliseconds) /1000 ] * [ Camera vertical ...
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1answer
57 views

Writting into XMP and EXIF Metadata from attribute table values in PyQGIS

I've already learnt how to read EXIF and XMP data's from JPG. Now I would like to write from value in attribute table into their XMP and EXIF tags. This code Import EXIF / XMP , and I would like to ...
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1answer
18 views

Mosaic to New Raster with no output

I have a large set of 4-band high resolution NAIP imagery that I had put into a mosaic and am now trying to create a raster using the Mosaic to New Raster tool. When run the tool just says 'mosaic is ...
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37 views

Exporting imagery/tiles with ArcGIS or some other way

The Australian state I live in has made historical imagery available, mainly through the use of a 'globe' service (https://qldglobe.information.qld.gov.au/) that works like Google Earth, where the ...
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25 views

Seeking free or recent aerial imagery

Is it possible to view either live or very recent (past few days) aerial imagery for UK? Ideally images would be satellite imagery, high resolution and free.
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23 views

Calculating elevation angles from RPCs in NITF files using GDAL

Given a NITF, the RPCs in the NITF, and the center pixel coordinates of the image, I am trying to determine the elevation angle (center ground point to satellite). From what I understand, this can be ...
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9 views

Worldview-2 imagery coverage

I am attempting to acquire imagery from the Worldview-2 satellite, and finding limited coverage for many areas within the United States. Sometimes, coverage is temporally deep for a time period (say ...
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1answer
44 views

Determining Longitude and Latitude of each corner of image

With this information below, including image size, longitude/latitude (of upper left I assume, maybe center), Resolution, and altitude - can I derive the Long/Lat of each corner of the image? "size":[...
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Aerial Imagery Capture Location

I have been tasked with finding out where an airplane was when it took the photo used in some aerial imagery that we have. I have been supplied with 'RAW' data and need to know how to interpret it ...
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100 views

Getting Maxar Premium Imagery in QGIS

When you edit OpenStreetMap you have access to the Maxar Premium Satelite Imagery. That is more recent than other imagery in certain areas. How can I get Maxar Premium Satelite Imagery as a layer ...
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1answer
43 views

Orfeo Toolbox maps Pleiades wrong

I have a problem with Orfeo Toolbox (OTB) function OrthoRectification. I have a Pleiades product which is an extract (not a whole scene) of a small area in the western hemisphere south of the equator ...
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1answer
54 views

Preparing two images with different dimensions to use in Agisoft PhotoScan

I have two aerial photos that are flowed over the national forest. The photos were scanned by a contractor and they came in various dimensions for each photos. The one I have had smaller dimension ...
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1answer
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Drone Imagery Footprints & Quaternions

I'm trying to use Drone Imagery Metadata to plot precise (or nearly precise) Imagery footprints on the the ground and I need some help with Photogrammetry / Trigonometry / Quaternions My repo is ...
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1answer
22 views

Unable to activate analytic asset in satellite Imagery

I was trying to import the map of Melbourne. I was able to fetch the details from API coordinates but when i am trying to check the analytic asset status, it is returning inactive. # extract image ...
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Permissions are blank when trying to load satellite images from Planet API

I am trying to download the map of Melbourne using Planet API. I have given AOI coordinates of Melbourne. When I run the code the permissions are returning blank ("_permissions": []). I cannot able to ...
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1answer
69 views

Cloud mask for worldview

I'm using worldview imagery downloaded from gbdx and I want to apply cloud mask for it. It's preferable to use ready-made layer or some python module/tool to create it. The demand for the method ...
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34 views

Split .tif image in Python using GDAL

I am trying to split .tif image that i have downloaded from satellite imaginary. The .tif image is 114MB and has lot of data and i want to split the image into further small images to work more on the ...
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23 views

Using object-based classification on a new set of imagery, without retraining the classification in ArcGIS Pro?

I am working with NAIP imagery for a county in PA in an attempt to create a classification scheme that I can use on other counties within the state. I'm very familiar with the process of creating a ...
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1answer
50 views

High resolution and reasonable cost RGB satellite images [closed]

I need to obtain high-resolution RGB satellite images with reasonable cost for Pakistan. The objective is to guide tourist on high-resolution GIS maps. Google Earth does not have very high resolution ...
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1answer
83 views

Binding multiple Leaflet image overlays as one

I am planning to put at least ten single image overlays, spread across the country. I have got two so far: var priorycourt = 'Priory_court.PNG', imageBounds = [[52.399892, -1.531154], [52.400837, -1....
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1answer
335 views

Google satellite xyz tile layer in QGIS has lower resolution than the basemap in Google Earth?

As far as I can tell, the Google satellite imagery loaded as an xyz tile in QGIS is the same image that is used in Google Earth, but at a lower resolution. The lower image below is from QGIS using the ...
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25 views

Getting stripe across tiles without buffering image?

I am new to geotools. I need to get a horizontal stripe of bytes from the image data without buffering the whole image. I've looked at the various envelopes and pretty sure I could use just ...
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1answer
37 views

Radiometric calibration of WorldView-2 imagery using ArcGIS Pro

I am attempting to work with worldview-2 imagery that I have downloaded and I am trying to radiometrically calibrate the raw imagery following the methodology outlined here. Since these are my first ...
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27 views

Storing earth observation derived attributes for polygons [closed]

I want to generate a number of vegetation related indices (NDVI, NDTI, etc., min/max/avg/std (pixel values)) from earth observation data for a large number of polygons during the entire growing season,...
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287 views

Increase the resolution of Google Earth Engine images

I am trying to fetch high quality images from Google Earth Engine. I want to understand the relationship between zoom_level option in: Map.centerObject(image, zoom_level); and scale option in below ...
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1answer
82 views

QGIS displays satellite data very blurry when ArcGIS Pro looks clear?

I am looking at a WorldView 3 image in QGIS (right in image) and in ArcGIS Pro (left) and there is a huge difference in quality. QGIS looks so blurry/a lower resolution. Any idea what's happening?
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14 views

Resolution issue with NAIP data

I have loaded a NAIP tile for a small area in VA to QGIS, and compared it to the ESRI satellite imagery I already have. I'd like to use NAIP but the resolution when I drill down to individual features ...
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1answer
39 views

Seeking aerial imagery for small site in VA? [closed]

I am trying to locate the best aerial imagery to use to assess a small area in Virginia using QGIS 3.6. I need to buffer features around water features and overlay onto aerial imagery to show ...
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1answer
95 views

Reading large image using GDAL?

I want to read large image. The image size is 92117 x 30313 pixels. So far I know cv2.imread can not read large size. How can I read using GDAL API?
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26 views

How to create coordinate system (using Lat/Long) across IR & VIS satellite images

A recent project of mine has been to gather IR and VIS data from WeatherUnderground's online site for the purposes of creating fun and informational temporal GIFs. Now, I'd like to take it a step ...
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30 views

Creating a pseudo-heatmap based on time spent in an AOI

I wanted to see if there was a way to create a heatmap based on time spent in a certain AOI. What I mean by this is a layer you can toggle on/off that would go from clear to red as you spend more ...
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25 views

Seeking night satellite images on which light from Earth can be seen? [duplicate]

I am working on a college project making cubesat. I'm in the group containing a sensor that will be used to measure light pollution. Currently we are trying to find existing images of earth containing ...
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1answer
136 views

ArcGIS Pro not loading associated world file with .PNG raster

I am fairly new to GIS, and brand new to ArcGIS Pro (came from ArcMap). I recently created a visual basic program that generates an image from the Google Static Maps API with a respective ESRI ...
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153 views

Add basemap copyright in QGIS?

I am using the QuickMapServices plugin for basemap imagery and was wondering if I can add a QGIS legend that includes default copyright information? I know this can be done in ArcMap...!
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1answer
81 views

Exporting bounding area only via ArcGIS Pro?

I use ArcGIS Pro to export a layout as jpg format image. I just wonder if any tools in ArcGIS pro can help me export the polygon area only and remove or symbolize the rest area as grey? My quick ...
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404 views

Google Satellite Imagery Offset in QGIS

I am using Google Satellite imagery as a base map to capture the vector data in QGIS 3.2.2 for past couple of months. Yesterday i noticed that the google imagery has offset issue in some locations ...
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18 views

How do I control the display of certain rasters in a mosaic dataset?

I have three mosaic datasets that I want to combine into one master mosaic dataset: I want to display the city imagery on top, the regional imagery next, and the county imagery on the bottom. They ...
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1answer
532 views

Downloading map tiles/image from website

There are two Norwegian websites that have satellite imagery I need, https://kart.finn.no/ or https://www.norgeskart.no . Is it possible to save a certain area when zoomed out so the scale is 200m, ...
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No Data Holes in Certain Tiling Scheme Levels in Mosaic Dataset Imagery Cache

I have a mosaic dataset containing three other mosaic datasets (one containing county imagery, one containing regional imagery, and one containing city imagery) I have them ordered by putting the ...
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49 views

Can't open WMS that worked before

I've been trying to access a several WMS servers in order to visualize imagery on my QGIS but when I put the URL on the searcher no results are given, as if there were no WMS server with such URL . I'...
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1answer
72 views

Dataset description AREA_OR_POINT

What are the differences between these two options in satellite image metadata?
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1answer
3k views

How to visualize multiband imagery using rasterio?

How do I plot a satellite image using rasterio? I'm able to plot the individual bands but not the entire image. Is there a way to combine the separate R, G, B numpy arrays to create a standard RGB ...
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1answer
639 views

Adding Here WeGo Satellite imagery to QGIS?

Here WeGo has more updated imagery for Cambodia than Google. I would like to add the WeGo image tile to QGIS. I have followed the instructions here and can add the WeGo street layers to my map of ...
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1answer
71 views

Focal length vs Principal point

I have set of areal imagery. One of a parameters I get with images is camera's Principal Distance , what I'm looking for is Focal length, but I don't have Focal length at the moment I tried to ...
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1answer
38 views

Creating ArcMap where two parts of different imagery basemaps are visible at once?

I'm using ArcMap to create backgrounds for a book of poetry where the backgrounds of poems are satellite imagery. I would like to have a section of my map be from a BW image and another from a ...
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1answer
70 views

ArcGIS 10.5 - Testing the accuracy of a satellite image's georeferencing using dGPS ground control points

I want to test the accuracy of the georeferencing of a satellite image by using a set of independent ground control points collected in the field via differential GPS. Is there a tool/method/...