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.

Filter by
Sorted by
Tagged with
0
votes
0answers
99 views

Keep high resolution on image export?

I'm currently trying to export a PDF from an image service that we have hosted. The imagery looks great within Arcmap, but the exported imagery looks really rough (coarsened). Does anyone know what ...
-2
votes
1answer
738 views

Convert PNG image to Shapefile in QGIS [closed]

I have a district boundary shapefile. I want to divide that district according to the boundaries given in image. How we can achieve it? Can we add vector file first then add image as an overlay on ...
0
votes
1answer
177 views

How to convert masks generated by rasterio to channel last mask

The problem is about using rasterio to generate mask from GeoJSON file which contains geographic coordinates. The function that I used is from: from rasterio.tools.mask import mask with rasterio....
3
votes
0answers
128 views

Could not allocate required memory for image

I'm trying to export a 24k image (export set to 1650DPI) using the "export as image" function but I keep getting the "Could not allocate required memory for image" warning. I don't understand why ...
1
vote
1answer
111 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 ...
2
votes
1answer
103 views

White stripe when exporting QgsLayout Map to image

I have a problem when I try to export a Map in the Layout of QGIS 3 with the Python API. Here is my code : qpt = QDomDocument() qpt.setContent(content) layout = QgsLayout(QgsProject().instance()) ...
1
vote
1answer
1k views

Image collection to Single Image in Google Earth Engine

I'm stuck with an issue in google earth engine. I'm working with MODIS Burned Area Monthly Global 500m, for a certain polygon area: var MOD = ee.ImageCollection('MODIS/006/MCD64A1'); var MOD1 = MOD....
0
votes
1answer
46 views

Colorize radar imagery so it looks like optical imagery

Here is an imagery from a radar satellite Is it possible to colorize a radar image, so it looks like and enables the same kinds of analysis as for an image captured from an optical satellite (simple ...
0
votes
1answer
246 views

Merging Shapefile with Image in QGIS? [closed]

QGIS version 3.2.1 Windows 10 Project File on GitHub Shape files on Github I am trying to create shapefile from coffee cup image. The actual coffee should be the shapefile. However I would like ...
0
votes
1answer
905 views

Earth engine error: Error: Invalid argument: 'image' must be of type Image

I'm trying to export an image for some SST temperatures for a given region ( and imported table EEZ) but I'm getting the error; Error: Invalid argument: 'image' must be of type Image Map.addLayer(...
1
vote
2answers
136 views

What does 4.5 mm resolution mean?

this is a rather simple and trivial question, but before I contact my supervisor I want to get sure. I have a .tif image that says the resolution is 4.5 x 4.5 mm. The output of gdalinfo is: Pixel Size ...
3
votes
0answers
74 views

Processing drone Images of body of water?

I took some pictures of a body of a body of water using a multi-spectral sensor attached to drone. When trying to process the image using Pix4D, more than 50% of pictures were unable to calibrated. ...
1
vote
0answers
147 views

Reducing image collection separately for each image to make series?

I know how to reduce a collection to one image, or an image to a value in Google Earth Engine. But I can not find an easy way to reduce each image in a collection to a statistics and get a list of ...
0
votes
2answers
94 views

Detect the coordinate reference system based on an image

Given a map as image, how can I find out which coordinate reference system it has? The question is general, but here is a specific example. Below is the map for which I want to find the coordinate ...
1
vote
1answer
1k 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 ...
3
votes
1answer
219 views

ArcMap Image Analysis Window - functionality is grayed out

In ArcMap's Image Analysis Window, none of the tools are available even though I have a raster selected in the window. I do not have Editor turned on. I can't identify why the Processing tools are ...
0
votes
2answers
1k views

Linking images to features in geojson layer popup using Leaflet?

I have a map of cycle fatalities, in which skull icons are clicked to produce custom popups: I would like to include an image along with the rest of the information on the popup, so there's a picture ...
2
votes
1answer
116 views

Seeking Image similarity software?

Could anyone suggest a script/tool/software, that would: recognize and quantify the similarity/dissimilarity between the four attached images? Meaning, it would show that there is a greater ...
0
votes
1answer
174 views

Invalid or nonexistent map configuration token

I get the return message NON-VALID PICTURE URL in the POPUP in the CARTO map. when editing in CARTO I get the "Invalid or nonexistent map configuration token". Please forgive my ignorance as I am a ...
1
vote
0answers
331 views

Select border region from segmented image

I have several thousand aerial photographs which have been scanned in and orthorectified, but the image borders and fiducial markers remain on the image. I am looking to identify these parts of the ...
2
votes
0answers
49 views

Locating and copying millions of images in QGIS?

I have image data collected across the US and Canada from 2016 and 2017. I need to find all images that are within 5 meters of each other in order to compare changes in landscape over the year. Eg, ...
1
vote
0answers
16 views

View Images in Carto

For 120 datasets, which I already loaded into carto and are shown where they are supposed to be shown, I want images to be viewed as well. In my thinking it should have been enough to put in an URL ...
1
vote
1answer
78 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, ...
1
vote
1answer
578 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 ...
1
vote
1answer
458 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 ...
1
vote
0answers
41 views

adding photo to the pop up field in qgis2web? [duplicate]

I want to add charts on my web map in a way that when i click on the point the chart appears in the pop up field. Do i have to add it as an image in the attribute? Can i do that when the ...
0
votes
1answer
97 views

Get convex hulls for all rasters in raster_columns [closed]

how to search the polygons of the images that I have in the Database? I want execute this function ST_AsText(ST_ConvexHull(rast)) for every "r_table_name" SELECT r_table_name FROM ...
1
vote
0answers
51 views

Couldn't load images on html on plugin processing (Linux and Windows)

Context I develop a processing plugin for QGSI 2.18 and in design GUI with *.ui files (Qt4) I can’t load PNG images with relative path in html defined in .ui files Works with absolute path It ...
1
vote
0answers
319 views

Leaflet.js - GeoJson properties as icon [closed]

In this map I am looking to display each image as a thumbnail from the GeoJson file. For the moment I am using this code: var myIcon = L.icon({ iconUrl: '<img src="feature.properties....
0
votes
2answers
67 views

Raster image changes colour after import

after raster .tiff image import in project, it changes colour. Imported Original What could be the options in QGIS 2.18.16 to get back to original colours? This kind of problem is quite new, ...
1
vote
1answer
259 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 ...
0
votes
2answers
575 views

An image on top of the marker with Leaflet

How can I achieve the same result (image below) with Leaflet? L.imageOverlay() only can supply one image, and the image size is based on (lat, lon). But what I need is the image size the same as the ...
1
vote
0answers
57 views

Identifying clusters in classified imagery data

I am relatively new to working with satellite imagery at 1 m resolution and am struggling with a methodology for "grouping" the imagery. Using ArcGIS, I have performed an ISO classification on some ...
1
vote
0answers
240 views

Different image quality for different zoom levels (OpenLayers/GeoServer)?

Original data that raster layers are made of are of a high quality. At a small scale (1:100) this is useful. However at a large scale (1:10 000) it results in ~300KB PNG images which are actually not ...
2
votes
0answers
479 views

Assessing accuracy of image classification using ArcGIS Desktop? [closed]

I have classified images in ArcGIS Desktop with the support vector machine classifier, and am now struggling with the accuracy assessment. I have only been able to find tutorials on how to do it ...
0
votes
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 ...
3
votes
1answer
693 views

How to georeference an image dynamically

I am looking for dynamic approach how to georeference an image of a radar. This is a data that is going to be fetch every hour. Of course I will only need radar data (without base layer and borders) ...
1
vote
1answer
307 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 ...
2
votes
0answers
110 views

Combine raster (monocromatic and RGB image)

I have to make an image starting from a cadastal map (monocromatical image) and an orthophoto (RGB image). Both are in tif format. The images are perfectly coincident, resampled to have the same pixel ...
-2
votes
1answer
168 views

Distorted image of KML in QGIS

I just started using QGIS and I used Google Earth to export images as KML ground overlays. I then bring the KML into QGIS, then georeference the raster. I tried using de CRS 6370. However, the image ...
2
votes
0answers
153 views

Adding non georeferenced image as BaseLayer

I am trying to add non georeferenced image as a Base layer in OpenLayers3 (v.3.8.2). On top of that there is WMS, called from GeoServer, as Overlay. I successfully loaded both layers, but they are not ...
0
votes
1answer
67 views

Can legends be exported as image in CARTO BUILDER?

How to add a legend when exporting a BUILDER map as jpg/png image?
0
votes
1answer
2k views

Adjust image size in popup to fit inside popup container

I would like to display images in popups. It works but the problem is the images are too large: I've added a class in the img tag in my js-file: var picURL2 = 'http://www.lib.utexas.edu/maps/...
0
votes
1answer
417 views

How can I display a GeoTIFF with multiple bands on OpenLayers?

I have a NetCDF file including 1365 bands (when opening in QGIS for example). To display it on an online map like OpenLayers, I tried to export it as a GeoTIFF image. I read a solution here that ...
2
votes
1answer
318 views

Sentinal-2 Georeferenceing [closed]

Are Sentinel-2 data geometrically corrected or do they need to be georeferenced as an image to image? What is the best software for processing?
6
votes
2answers
3k views

Detecting overlapping blobs in image?

I have read the following two posts related to my question; however, my problem is slightly different and I'm having a hard time solving it. Finding if two polygons Intersect in python? Getting ...
2
votes
1answer
3k views

Loading a shapefile and image using DotSpatial

I am using DotSpatial 1.7 in my win form app. I have an image (original image) downloaded from Universal Map Downloder and then loaded this file with a shapefile in QGIS and then georeferencing the ...
2
votes
2answers
923 views

Summing of individual image's statistic over ImageCollection Google Earth Engine

I have an ImageCollection containing FIRMS fire image in 2014. I want to count number of fires in the year for a predefined region. I can find a way to count number of fires for individual image ...
-2
votes
1answer
340 views

how to convert this satellite image to RGB image

I have a TIFF file, looks like this: **Driver: GTiff/GeoTIFF Files: quickbird2015.tif quickbird2015.tif.aux.xml Size is 15106, 5106 Coordinate System is: GEOGCS["unknown", DATUM["unknown", ...
1
vote
1answer
83 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: ...