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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1answer
430 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
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1answer
332 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
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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
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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
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2answers
968 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 ...
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1answer
348 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", ...
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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: ...
3
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1answer
102 views

Down sample with imagemagick then import worldfile?

I'm trying to get a better understanding of the limitations of world files and how I can use them in a current project. If I produce an ESRI world file (tfw) with listgeo: listgeo -tfw clip.tif ...
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1answer
76 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 ...
2
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1answer
95 views

Getting ArcGIS online web map to update images coming from randomly generated link?

I am creating a web map that shows images from a live traffic feed. The feed, which is coming from the Texas Department of Transportation's website, updates every few minutes. When the updates happen ...
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0answers
45 views

Google Earth data backup [closed]

Is it possible to have data backup? If so how long? Except Google Earth is there any other authentic system that can provide cultivations image data of a field for last few years?
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1answer
373 views

How can I identify least cloudy image in Google Earth engine?

I need to Load Landsat 8 TOA images, get the least cloudy 2015 image. Search engine shows several images. How can I identify least cloudy image?
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1answer
480 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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0answers
76 views

Automated way to create polygons from coloured map

I have a scanned map that has areas of different colours. I want to create polygons for each area and would like to avoid doing it manually (tracing over the shapes). Is there a way to do this? I ...
1
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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
224 views

Why is GDAL isn't supporting .raw images?

I tried to open a .raw image (Raw image format) using GDALOpen() with GDAL C API. So, I wrote the following code to test it : in_data = GDALOpen("/home/YOYo/workspace/NY/Data/fig.raw",GA_ReadOnly); ...
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1answer
221 views

ReadAsArray() equivalent in C

I'm new with GDAL ... and I'm trying to write some code where I have to read a .raw image and store it as an array of 32-bit floats. It seems that it is easy with python, I just have to use: array = ...
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0answers
77 views

Launching hyperlinks using non default Windows Viewer in ESRI Web Applications

We have developed a custom Python based image viewer, which we would like to deploy in Portal for ArcGIS for viewing hyperlinked images (through attribute tables). We can't use the native Windows ...
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1answer
54 views

Embedding 2500 images into feature class using ArcGIS Desktop?

How can I automate embedding images into a feature class attribute table? I am working with a point feature class within a geodatabase that has a total of 2500 rows of data that need two image ...
2
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0answers
399 views

Import multiple images into attribute table

Does anyone know how to tie multiple images to attributes within a shapefile attribute table at once? I am working with a point shapefile within a geodatabase that has a total of 2500 rows of data ...
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0answers
69 views

Make images/PDFs in QGIS from Vector Layers [closed]

I have a bunch of vector layers and a few polygons that I want to use to create a image out of while having my image in the background of an aerial photo. I am unsure what commands to use to ...
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1answer
257 views

Navigate through non-geographical maps

I'd need to navigate through and mark non-geographical maps. I used Leaflet.js example to do that (http://leafletjs.com/examples/crs-simple/crs-simple.html), and it's working, but my images would be ...
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1answer
719 views

How to add dataURL image as source in OpenLayers?

I am building a web application with OpenLayersthat should have offline map support. I save pictures from a WMS server to the browser cache and load them from the cache as a dataURL. The next step is ...
3
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1answer
142 views

Performing image classification from Nearmap WMS in ArcGIS Desktop?

I have a subscription to Nearmap that provides me with WMS Server link to their images. I would like to perform image classification using this imagery however I can't work out how to use the WMS feed ...
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0answers
71 views

High resolution is RGB image is not coming clear and sharp?

I am woking with LISS IV image of Indian Satellite Resousesat-2. This image has 3 bands i.e., NIR, Red, and Green band and spatial resolution of five meter. When I view the image in ArcGIS the ...
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0answers
16 views

ArcGIS Attribute Image Download [closed]

I am creating a database which has to consist of images (the images are older survey PDF plans that I have been saved as jpgs). I understand the feature has to be in a geodatabase, then the attribute ...
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0answers
315 views

Generating shapefile polygons from png

I'm trying to generate shapefiles from png image and isolate polygons by colors. I'm using gdal_translate to georeferencing image to GTiff and gdal_translate.py to convert GTiff to shapefile. ...
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0answers
35 views

Reposition geotagged image on mapoeg [closed]

I am building a map in leaflet, rendering a variety of layers on top of the map. One layer contains geotagged images fetched from a folder (with Leaflet.Photo). Some of the images GPS locations are ...
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0answers
20 views

Too many fields, cannot see them in qgis2web

I have too many fields, so they can't all be seen, is there a work around for this? see this image As you can see the info "bleeds" over and you cannot see it, I need to reshape that as a box ...
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0answers
280 views

Including image in callout using ArcMap?

I'm using ArcMap 10.3 and creating a map of 30 properties where each property needs to include an image within the callout. The final product has to be a printed map. I'm familiar with creating ...
2
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0answers
373 views

Using ArcGIS Maximum Likelihood Classification gives Error 010108? [closed]

I am trying to find trees of a single species (Cedar) in my orthophoto. My assumption is that the spectral bands of cedar trees are different to other vegetation (they definitely look different). I ...
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1answer
517 views

Download image files from wms service [closed]

I'm having trouble getting (georf'ed or not) images from here: http://gis.ktimanet.gr/wms/forestobjections/
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1answer
515 views

Why memory map file is larger than original slide

I am having a tiff slide with the dimension of 90112 x 100352. The slide size is 1.3GB . To process this slide i am creating a numpy memmap file with above dimension like below. If I check the size ...
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0answers
43 views

Cropping Oblique Photos to Geographic Feature

Let me preface this by stating that I know I'm in the GIS neighborhood and I'm asking a code heavy question, but my hiccup here isn't the programming - it's the GIS and associated math. I am writing ...
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0answers
694 views

How to reshape an array of points into an image

I have a numpy array of shape (1964, 3), in the following format: [ [ 0.3945, 52.700, 0.8 ], [ 0.3788, 52.121, 0.3 ] ] etc. Each nested array represents a point in the format of [longitude, ...
3
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1answer
317 views

Using PCI Geomatica 2016?

I've been experiencing some trouble when inserting some optical satellite imagery into PCI Geomatica 2016 (Trial version). Whenever I open my .TIL file, an X appears beside its name in the Focus' ...
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1answer
1k views

How to find out Actual coordinate(pixel values) of chunk relative to the actual image?

I have an image of let say 500 X 500 px, I created tiles/chunks of size (10, 10). Now I want to find out actual chunk coordinate relative to the Original 500X500 px image. Ex I have first chunk of ...
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0answers
141 views

Solar Potential roof-top analysis using GIS and Remote Sensing [closed]

3D Building models were generated by using Google Sketchup Pro and Google Earth. Then shadow casted 2D orthographic raster models were exported as TIFF or JPEG format. For further analysis with ...
3
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2answers
758 views

How to drape image on surface using open source software?

I have a image with a known projection - say an aerial photo. I also have a raster surface grid with the same projection - say a DEM. Both are in the same projection. Both have the same extent. How ...
3
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1answer
94 views

Buying hyperspectral digital imagery?

I'm planning a research that includes couple Ikonos, QuickBird and GeoEye digital images. Until now, I have had no luck getting answer from the official website of Landinfo. Is there any other way ...
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1answer
2k views

How to change Numpy array shape [closed]

I have an array (Numpy of shape (100, 256, 256). How can I change this to (100, 256, 256,3)? I tried doing reshape but it doesn't work, Can anyone help me.
4
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3answers
499 views

I cannot find full Sentinel-2 scenes

I want to download Sentinel-2 images of "Navarra" zone from June to December of 2016. I want to download all swith image (all tiles in a SAFE file) but when I search this I only can download up to ...
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0answers
8k views

Zero-size array to reduction operation maximum which has no identity

Below is my identify background code, which identifies a background from an image and removes it.; Previously it's was working fine but after I chunked my images and try to find out background I got ...
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0answers
489 views

How to host kmz file for Google Earth Pro network link

I have a repository consisting of a large number of image overlays, polygons, and 3d polygons in Google Earth Pro. The image overlays are linked to and stored on a windows web server and it works fine ...
3
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0answers
120 views

Image & limit user access by poly

Wondering how do I clip images to polygon outlines in a web map application based on OpenLayers or Leaflet? How can I limit web map users to see (visualize; qualitative) or query (quantitative) within ...
1
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1answer
246 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
227 views

CARTO DB / Adding images using layer.on('featureClick',function(e,latlng,pos,data)

Each of my data points have a different image. The images are all loaded in CARTO and the column has a name. I need to call each of the images on click event. I've been using the layer.on('...
2
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4answers
1k views

Is this satellite image of a blackout real? [closed]

Puerto Rico is currently experiencing a massive blackout. 1.5 million homes without electricity. There is a meme circulating with the satelittes of the carribbean before and during the blackout. ...
2
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0answers
399 views

Performing unsupervised k means classification in QGIS? [closed]

I'm running QGIS 2.16 on Windows 10. I'm looking to perform an unsupervised K means classification on a geoTiff image I have from a multispectral camera surveying sugar cane fields. Alas, the ...
1
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1answer
274 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 *...