Questions tagged [image]

A representation or description of a scene, typically produced by an optical or electronic device, such as a camera or a scanning radiometer.

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958 views

Seeking Icon library for custom GIS software? [duplicate]

I am building a desktop application and currently utilizing a mix of icons for pan, select, zoom, attribute table, etc that have been randomly taken from the internet and modified. The overall look ...
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1answer
215 views

How to insert multiple images in the Atlas in QGIS?

I have a layer of CROSS SECTIONS (34) and the same number of IMAGES correspondent of each section. In the cross sections layer I have a column named PHOTOS where I defined this field as "ATTACHMENTS > ...
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1answer
2k views

How to download satellite image from planet.com using API key

I would like to know what to do (step by step in simple words) and how to get data from www.planet.com There is tutorial https://www.planet.com/docs/api-quickstart-examples/ but anyways I have ...
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1answer
490 views

How to apply compression (e.g. LZW) when exporting a map from QGIS composer to TIF?

QGIS > Composer > Export as image > *.TIF I need to apply lossless compression (e.g. LZW or ZIP), when exporting a map from QGIS (v2.18) composer to TIF image. This settings are missing in the export ...
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1answer
1k views

Calculating Accuracy Assessment in QGIS?

Is there a way to calculate an accuracy assessment in QGIS? I have around 300 points. At each point I extracted the value of the pixel. I compared the extracted value with the value which should be ...
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1answer
358 views

Embedding a leaflet map onto a blog

I've created a leaflet map using maptiler. It's created a leaflet HTML file, which links to PNG images on my desktop and displays the image. How do I embed the map onto a blog such as tumblr?
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1answer
938 views

Performing image segmentation in QGIS?

I have been trying to learn to work with QGIS (open-source GIS software) through some tutorials available online for classification of image for land cover. These tutorials used a dataset from Landsat ...
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2answers
644 views

How to add an image to canvas?

I am trying to make a QGIS plugin using Python. Right now I need way add an image to canvas but I don't want that image to be a new layer in qgis project. Is there a way to do it? Now I have: self....
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1answer
1k views

Add image to bottom corner of MapBox.js map

I have a MapBox.js map up and running and I would like to add an image to the bottom left corner. I tried adding in this code: <img src="IMAGE URL" height=100 style=’position:fixed;bottom:0px;...
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1answer
1k views

How to convert jpgs to RST for IDRISI Selva Image Processing

I would like to create a mosaic data set in IDRSI Selva however, my images are jpg. Is there a way to convert these within IDRISI or otherwise?
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2answers
8k views

How to display a image from Postgres database?

I have Images in bytea form in PostgreSQL/PostGIS database, I want to display them in a webpage using PHP - PostgreSQL. I have a lot of examples that have worked out but I am not getting output from ...
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2answers
83 views

Coordinates of image corners for ImageExtent in Openlayers 5?

It is possible to get the coordinates of the four corners of the image, given the center of the image coordinate? or the bottom left and upper right corners? Currently, I am center the map in the lat/...
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1answer
118 views

Classification erosion - semi-automatic classification plugin

I get an error when working Classification Erosion tool in Semi-automatic Classification Plugin (SCP). I use QGIS v3.2.2 and SCP v6.2.4. The tool is not changing the pixels of the raster layer and ...
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1answer
81 views

QGIS project with integrated images

I would like to know if anyone knows how to incorporate images as attributes in a QGIS project, and that these are displayed even if the folder containing the project and the source files (shapes, ...
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1answer
677 views

Cloud cover percentage in Google Earth Engine

I'm doing a project at my university about the Cloud cover percentage in determinate areas in the world. I'm completely new to Google Earth Engine and I'm struggling a lot trying to find a solution ...
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1answer
1k views

Fast way to get all points as integer of a LineString in shapely?

So I have a shapely LineString: print np.round(shapely_intersecting_lines.coords).astype(np.int) >>> array([[ 1520, -1140], [ 1412, -973]]) I want to get all the points in ...
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1answer
77 views

Options for generalizing raster?

I have a DTM raster which has too high a spatial resolution for my intended use, and I need it more generalized. Can't put my finger on how much more, but considerably more. My first thought was to ...
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1answer
44 views

Restrict geoprocessing from ArcGIS Server service

I have an Image Service up on our ArcGIS server. Its a DEM we are providing it to some of our partners. Works great and fast, but I want to turn off the ability to run tools from the service within ...
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1answer
278 views

GDAL get pixel color

Has a problem. I have an tiff image (that have 4 layers). My tasks is to make small changes in pixel's color to make image better. In this case I use GDAL library. My source is: GDALDataset *...
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1answer
187 views

Different values after clipping

I have a satellite image from Landsat TM. I want to clip my area so i created a polygon and thru Qgis --> raster clipper I am trying to clip my area of interest. I noticed that the results have ...
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1answer
1k views

Draw OpenLayers layers to Canvas

I need to export the current OpenLayers view into a canvas to finally save it as a image. My problem is, that I need an image of the current user view with some interactive elements. I saw this ...
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1answer
178 views

Clipping aerial image pairs by their overlapping area

I have a set of aerial images which I am trying to clip by their overlapping areas, for use in a more involved program I am writing. Is there a command line based tool out there with an easy method ...
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1answer
328 views

image rectification with Mercator projection

I have written an image rectification function which allows a user to select 2 points on an image and 2 points on a map. The function will then rectify the image so it is translated, scaled and ...
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2answers
1k views

How to remove sandy dots in an image?

I am processing a LandSAT image for geological purposes. After some processing there are so many sandy dots in the image. To get clear geological formation as a polygon I want to remove small sandy ...
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2answers
2k views

Which wavelengths are assigned to which bands in NAIP imagery?

I cannot seem to find a definitive source on which wavelengths are assigned to which bands for 4-band NAIP imagery. Here is an example of the imagery I am working with (2011 4-band NAIP imagery). I ...
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1answer
220 views

Katalog for Envi

I am working In Process of Image Cataloging of Satellite Imagery. For That I have found Free extension software in ENVI called "KATALOG" .But I cannot find any useful resources for Downloading it. ...
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1answer
393 views

How to integrate external image processing programs within ModelBuilder

I want to use python libraries to do image processing for very large files (over 2GB), but the current python libraries can not read 16 or 32 bit image correctly. At least, I tried Python Image ...
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1answer
3k views

Overlay the big map image with Google Maps API

I put the image on my website with overlay option in Google Maps API. But the map image which is overlayed is too big: 2.85 MB. I can't resize it, so I wonder is there an option to put it somewhere on ...
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1answer
23 views

Image with background as feature style

I'm working on project that uses Open Layers. I have a problem with styling some features. Is it possible to set as Style image and also specify fill and stroke for it, for example background of the ...
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1answer
39 views

Trying to pop up image in GeoJSON file?

I am trying to put an image inside the geoJSON file. I know, that Geojson works as string and I cannot input the image directly, however I found some stuff, like this below: http://www....
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1answer
285 views

Extracting qualified image patches in Google Earth Engine?

I want to extract qualified (e.g., cloud-free) image patches (e.g. size of 128x128) in a large image (e.g. 10000x10000) in Google Earth Engine. These image patches can overlap with other qualified ...
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1answer
54 views

How to Sample Locations from a Satellite Image

I am using the Near infrared and red bands from satellite images to research soil quality in southern Africa. The study site is about 20 km wide and 20 km long so almost square shape, and I am using 5 ...
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1answer
134 views

When adding properties to an image, no longer allowed to add to Map

If I create an image, that I add properties to, I can no longer add the image to the Map. How can I add it, or how can I add properties so that it doesn't break? var myPoint = ee.Geometry.Point([-64....
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1answer
53 views

Use open layers plugin display as georeferenced image in QGIS

Could someone tell me if it is possible to save a plugin open layers display as georeferenced image in QGIS 2.18?
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1answer
495 views

Exporting map as georeferenced image

I am using OpenLayers to create a map where I can Zoom and export the view (Following this exemple https://openlayers.org/en/latest/examples/export-map.html) This works fine, but what I need is a ...
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1answer
284 views

Using QGIS to turn a PNG into ASCII

I am trying to take three grayscale PNGs and turn them into an ASCII file for a CNC machine to mill them out. To get an idea of my project, here are some links: This guide is the basic premise of ...
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1answer
327 views

How to make subset from satellite images without getting empty border?

I have Landsat 5-8 images, and after creating subset for the area of interest there is an empty border on the image as black part. How to remove it or how to create subset without it? Here is the view ...
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1answer
85 views

Atlas - Export one image for each street of multiple areas

I have 2 layers: OSM roads polyline layer various area polygon layer I need to export each area with every road highlighted. Here are 2 exemples of export of the same area with 2 differents roads: ...
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1answer
248 views

Adding a fixed infobox showing an image when clicking on a feature

Each of my data points have a different image. The images are uploaded to a web server and on CARTO I created a column with the url {{image_url}}. This works fine when showing the images on hover ...
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1answer
118 views

Bands disappear after Raster Calculation ArcGIS [duplicate]

I have a tif file containing 36 bands. After I applied raster calculation on the file the bands aggregate into one single band which I don't want because I need them for further calculation. People ...
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2answers
79 views

Converting an image into a font to label point features

How do you convert an image (ex: company logo) into a font and store it within arcmap so that it can be called upon to label point features with?
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2answers
94 views

HTML ArcGIS Online inserting image issue?

Within a story map application I am trying to add a picture to the title. I am adding the picture through HTML code and it works, but for some reason it adds a maximize button to the image. This ...
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1answer
44 views

Changing Dataset Property

I 'm working on GDAL C++. But I have some trouble to change GDALDataset property. I have converted "jpg" to "bmp" an image. But I want to do read an image(jpg) to gdaldataset then change dataset ...
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1answer
1k views

How to add an image to a point in QGIS?

How is it possible to add an image to a point in Qgis I was thinking about something with html and actions The following example is made by the plugin Qgis2web. But the image wouldn't show. The ...
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1answer
985 views

How to overlay unprojected image in openLayers 3

I need to overlay an image that does not move with the map layers. I've considered using the ol.control.Control, as the doc specifically states they can be "informational only," as in my case. All the ...
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1answer
895 views

GeoServer create map from image

Can i create a map using plain image(jpg or png) with GeoServer and OpenLayers? Scenario as i see it: I upload image(somehow) to GeoServer and it converts it to a map layer Then i create a simple ...
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1answer
594 views

Clipping a tiff image using another tiff image using Python

I am working on a code to clip a raster with another raster. I have a forestcover.tiff image and I want to clip it by using other image clip.tiff which extend lies within it. I don't want to use arcpy ...
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1answer
589 views

creating a random raster image using gdal [closed]

I want to create a random image containing say three classes with predefind percentages of each of the classes using gdal in python. Can anyone provide any sample code?
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1answer
2k views

How can I create GRID from IMG?

I would like to convert an img to grid in ArcMap 10.2. I tried it in two ways: In Conversion tools with the Raster to other format tool, where I adjusted the GRID format and the output workspace was ...
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1answer
1k views

Set coordinate origin to the top left corner

I have a BMP-picture and I know that it's top left corner has the EPSG:3068 coordinates 35500,24390. I would like to use gdal_polygonize and than calculate the EPSG:3068 coordinates of the produced ...