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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2
votes
2answers
92 views

Convert PNG to GeoTIFF: Invalid pixelsize in geotransform array in FME

I'm converting PNG file to GeoTIFF. Here's the setup that I use in FME: PNGRaster -> RasterExtractor -> CoordinateSystemSetter -> RasterGeoReferencer -> ...
2
votes
1answer
72 views

Extracting NDVI using QGIS from multiple images to Excel?

I created 25 images in QGIS. Each image has different information about the NDVI of the area. How can I extract mean, max, and min information about the NDVI from each image and put it in Excel?
2
votes
1answer
34 views

Landsat 8 images acquisition_date

I need to know the exact date of image acquisition for NDVI purpose, the date on image name is " LC80920852014222LGN00" is in Julian date, but in meta data it says"acquisition_date>2014-08-10" , I ...
2
votes
1answer
266 views

How to export the map in very high resolution

I made a map in QGIS. Now I want to export the resulting image (layers upon layers) for further processing in GDAL. The print composer only lets me export an image up to a fixed size. If I try to ...
2
votes
1answer
199 views

ArcGIS Report with images based on a field

Just a quick question for all the experts out there. I'm currently trying to generate a report through ArcGIS 10.2.2 based on my attribute table in which one of the field is a photo links field. I ...
2
votes
1answer
242 views

Can a DXF File contain raster images (TIFF/JPG)?

I am maintaining a large Program with a graphical editor. Our Program can export DXF and it can show Background Raster Images of various types (TIFF, JPG, BMP etc.). Is it possible to embed these ...
2
votes
1answer
201 views

Determining the transformation between a satellite image and long/lat

I'm trying to overlay some data onto a satellite image of the UK. The image is a hi-resolution version of the image below (originally from dundee university): ...
2
votes
1answer
1k views

Added PNG dissapears when I export/print map

Ive added a PNG image of a chart to my map and when i try to export as any image file or print the map the PNG image is not there. Im using arcmap 9.3. in layout view im adding image which ive tried ...
2
votes
1answer
180 views

dojo/request a png image array buffer using NodeJS, and return the image to the client

I am attempting to request a png image using NodeJS and dojo/request from an ArcGIS Server REST feed, and return the image to the client. I need nodeJS to add a token to the request as a query ...
2
votes
1answer
44 views

How to obtain coordinates from points with similar symbol in an image?

I would like to obtain a table containing all the coordinates of the triangles in the following image. I know it is possible to georeference my map using the georeferencing plugin and then I can ...
2
votes
1answer
70 views

Cache - how to give QGIS more?

Another question... how do you increase Cache size? think QGIS is falling-over as haven't given it enough... image to export 1080 x 800 mm! would like at least 120 dpi or 200 : ) Many thanks, Cas
2
votes
1answer
67 views

Georeferencing an image to a Progressive JPEG

I am using the Georeferencing tool in ArcGIS 10.2 to georeference a normal JPEG image. I want to produce a georeferenced Progressive JPEG image from that image, but there is no JPEG Progressive ...
2
votes
1answer
288 views

Extract all unique values from a RGB raster

I have a .png file in RGB format showing the intensity of ship traffic: For my analysis I need to convert it to a one-band raster with values between 0 and 1 where 0 means lowest density and 1 ...
2
votes
1answer
72 views

Cannot save map from composer as image or pdf

I have created a map and made a nice lay-out in the printer composer (in QGIS 2.4), the weird thing is, that if I try to save my map as an image or as a pdf immediately after entering the name in the ...
2
votes
1answer
434 views

Spot 6 - Reflectance calibration

I have a Spot-6 image and the metadata contain 9 values of SUN_ELEVATION (BottomRight BottomCenter BottomLeft CenterRight Center CenterLeft TopRight TopCenter TopLeft). I've used before Landsat and ...
2
votes
1answer
67 views

Why are Images used as label not rendered correctly by GeoServer?

When I try to render the label (png image) through GeoServer as an image, its quality is getting affected i.e. the image is not rendered sharply. Are there any settings that need to done in ...
2
votes
2answers
837 views

Permanently attaching Image file to Feature Class in 10.1

I need to forward on a File Geodatabase, and I am using the attachment manager to attach the file images associated with the different features in my Feature class. If I forward on this FGD, will the ...
2
votes
1answer
298 views

Create image (TIFF/PNG) from geodetic (lat/long) data

Using Java, I need to render a bunch of geodetic data to an image, ideally TIFF or PNG. Specifically this is weather data, with each sample having a latitude, longitude, and amplitude value. I'd like ...
2
votes
1answer
481 views

Can I edit pixels values of an image with GDAL?

There is a method with GDAL (used in C/C++) to edit pixel values of a georeferenced image, maintaining the original file? Or I have to create a new dataset? My goal is to maintain ALL originals ...
2
votes
1answer
145 views

How to determine if an image file is georeferenced

I have a task to scan a folder for georeferenced images. There might be a lot of images, some quite large, and some not georeferenced. The spatial information can also be either embedded or in a world ...
2
votes
1answer
160 views

Adding images to placemarks multiple times

I have a route that I travel that is saved by coordinates to a .csv file for use in GE. I have images (pictures) that I would like to add to placemarks I have along the route. Is there a script or ...
2
votes
3answers
6k views

help displaying jpg in openlayers?

I am trying to overlay a jpg image over an openlayers map. I have been to the example on their site and looked all over for a solution with no luck. So I am guessing that their are rules for setting ...
2
votes
0answers
95 views

Is it possible to query/download satellite images with Python?

I was wondering if there exists a Python library/API for downloading satellite images. Ideally, I would want to enter the latitude and longitude of a bounding box and get a high resolution image ...
2
votes
1answer
31 views

Flickr image doesn't show up on Infobox Header

I'm trying to put an image on my infobox header from Flickr and it doesn't work. However, images from Google work -- is there any way to make a Flickr picture work?
2
votes
0answers
162 views

Is it possible to export my FME workbench canvas as a JPEG?

I want to print my FME workbench to a JPG so that the entire canvas is in one image. I have tried printing it to a PDF but it is trying to put it on multiple pages. I have even tried setting the ...
2
votes
0answers
74 views

Is it possible to get coordinates for point from satellite image? [closed]

Is it possible to get coordination for point from satellite image using any programming language? For example, if I clicked on a specific point on a satellite image hosted on a web application, I ...
2
votes
0answers
161 views

ArcGIS for Desktop is rotating attachment pictures from feature service of ArcGIS Online?

I have a web map on my ArcGIS Online account. In that map are features (line polygon points) with a picture attached to each feature. After saving the feature service as a local copy on my desktop ...
2
votes
0answers
204 views

multiple image in OpenLayers

I'm fairly new to OpenLayers so please bear with me. I'm trying to add multiple images to OpenLayers. I have the following (some code is excluded): var images = [image1,image2,image3] // these are ...
2
votes
0answers
661 views

How to extract road line pattern from satellite images using Matlab? [closed]

Firstly we applied canny edge detection to the image, then detected lines using houghlines, then we got start and end points of the lines. Then we applied delaunay triangulation and voronoi diagram ...
2
votes
0answers
107 views

Flood extent extraction from satellite images

How i can extract the floodwater from satellite images? Is the image classification method accurate for moderate-resolution satellite (Terra/Aqua MODIS)? Or is there a more accurate methods? Thanks.
2
votes
0answers
125 views

Adding dynamic picture elements to mapbook [closed]

I have a feature class full of traffic signal data including up to 3 pictures of each traffic signal. I want to create a series of data driven pages that include 3 picture/data frames that ...
2
votes
0answers
924 views

Automated testing for GIS apps

There are several commercial and opensource tools for regression automation. While many of them could be employed to test GIS apps, they fall short, at times, dealing with the unique characteristics ...
1
vote
1answer
273 views

Why is azimuth resolution worse than range resolution in Sentinel1 (SAR) [duplicate]

Why is the azimuth resolution in Sentinel (SAR sensor) worse than the range resolution? The table in this link gives the resolution for SLC products aquired in the different aquisition modes. In ...
1
vote
1answer
164 views

Different origin between GDAL/Python and ArcMap of a Modis image

I have a Modis image and i load this image in Python using gdal library from osgeo import gdal, ogr INPUT_raster_1 = "C:\\myimage_1km.tif" ds_1 = gdal.Open(INPUT_raster_1, gdal.GA_ReadOnly) ...
1
vote
2answers
548 views

Where to find Icon library for custom GIS software?

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 ...
1
vote
2answers
63 views

How can I ensure the image exported from Print Composer is accurate?

I'm using QGIS version 2.12.2, and using print composer to export my map to an image file (I've tried pdf as well). In the print composer it displays fine - just a basemap overlayed with land type ...
1
vote
1answer
166 views

Is the reflectance required to get the NDVI, for Landsat 8 images?

I'm a beginner in satellite optical imagery. I have a landsat 8 image (11 bands downloaded from http://earthexplorer.usgs.gov/) for which I need to calculate the NDVI (Normalized Difference Vegetation ...
1
vote
1answer
381 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 ...
1
vote
1answer
565 views

How to Read&Write .tiff images in java using GDAL library

I searched many sites to learn about this but I didn't find anything. I need step by step process for reading .tiff monochromatic image in java using Gdal library.
1
vote
3answers
2k views

How to add png image with esri javascript api MapImageLayer Class?

I have a png image that we host that I need to resize and overlay onto a map at specific gps coordinates. Would this be an image class? I can't seem to find any examples that match up with my needs. I ...
1
vote
1answer
423 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? Thanks.
1
vote
1answer
45 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 ...
1
vote
2answers
134 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: ...
1
vote
1answer
643 views

Is it possible to create a scatterplot with icons (svg or png) instead of points

I'm just starting with R and I wanted to know if it's possible to create a scatterplot with custom icons (svg or png) instead of points. I started to import a shapefile, and then I have a set of ...
1
vote
1answer
82 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 ...
1
vote
1answer
154 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 ...
1
vote
2answers
289 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 ...
1
vote
1answer
121 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. ...
1
vote
2answers
3k 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 got lot of examples and I worked out but not getting output from them... Few ...
1
vote
1answer
2k 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 ...