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
21 views

Hand-held GPS to which I can upload imagery and shapefiles?

We've been struggling with Garmins. We can upload imagery and data using a phython script to create a KMZ file then drop it onto the GPS. It kind of works (much better on the newest units, barely on ...
0
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1answer
17 views

How to display EPSG:32649-WGS 84 image on EPSG:4326 map in ArcMap?

I have a image has EPSG:32649 coordinate system and I wanto display this image on a EPSG:4326 map on arcgis desktop (arcmap) . Any one can help me?
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0answers
11 views

Which image format is needed to make a spatial profile in Erdas Imagine 2013?

I have a problem with the spatial profile tool in Erdas 2013. When I want to make a profile, appears the message 'Error opening raster layer'. The same problem I have already had before, but after ...
1
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1answer
52 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 ...
3
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2answers
83 views

LiDAR intensity image from multiple flight lines?

I'm working with multiple raw las tiles, and I've used Fusion to create an intensity image, but it shows the flight line overlap (see below). Any idea how can I smooth the image so that the overlap is ...
1
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1answer
34 views

How to increase height of image header in Infowindow?

The CartoDB Infowindow default image header width is max 400, with height always set to a default, which looks to be about 250 so the image is really wide. Is there a way to set the image to be more ...
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0answers
10 views

Using photo for mapping lineations in ArcGIS for Desktop?

I am attempting to map the paths of burrow on an oriented photo in order to generate an xy xy chart to run a lineation analysis. How do I get a photo into ArcGIS, orient it, and trace lines that ...
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0answers
15 views

SPOT6 image does not display correctly in arcpad

I am using ArcPad Data Manager from Arcmap 10.3 to export SPOT6 image to .apm file for Arcpad, and using it for field work, I exported it as background TIFF, the projection I used is ...
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2answers
56 views

Use Google Earth for land cover classification accuracy evaluation?

I am doing land cover classification with an hyperspectral image of Santa Barbara, CA. The spatial resolution is 6.4 meters but I couldn't find any high spatial resolution land truth data for ...
2
votes
1answer
99 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
2answers
168 views

image segmentation of RGB image by K means clustering in python

I want to segment RGB images for land cover using k means clustering in such a fashion that the different regions of the image are marked by different colors and if possible boundaries are created ...
3
votes
1answer
87 views

Put png map image as a background to draw upon

I have an image of a fiber optics network map: I want to turn this map image (without any actual GIS data) into a vector map where each point is defined by lat, long. To do this, I'm trying to ...
1
vote
1answer
49 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 ...
1
vote
1answer
29 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
1answer
117 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
63 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 dont want to use arcpy ...
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0answers
29 views

How to overlay dem (100m) over MODIS (500m) in square grid?

I have SRTM Dem data and the resolution 90m approx at the equator however the resolution varies as we move from equator to poles. For my case the study area is Himalayas. My plan is to get the square ...
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0answers
13 views

lambertian - non lambertian methods

There is enough literature on the topographic correction of satellite images, but in what cases the non Lambertian methods are preferred (over Lampertian)? do we determine the appropriate method only ...
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1answer
57 views

Georeference a polyygon within a pdf file [duplicate]

I have this pdf file that contains a specific borough of my city, Montreal, with a polygon inside it. Link to pdf file: PDF FILE The jpeg image once exported from the pdf file is the following I ...
1
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2answers
54 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: ...
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0answers
32 views

Using NDVI values as covariate in survival analyses

I am trying to become more familiar with processing NDVI values in GIS. However, despite its usefulness, it seems to have some limitations. Namely, creating NDVI values across a large scale can be ...
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0answers
36 views

Using QGIS in medical Science? [closed]

I was wondering if anybody would be interested in collaborating? My Idea is using QGIS to analyze and quantify Immunofluorescence raster images of cells from human serum.
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0answers
83 views

Mosaic LANDSAT 4 Image in ERDAS IMAGINE

I am trying to do Mosaic in Erdas imagine. I have three tiles of Landsat data: one is Sept89 others two are March90. I am using Weighted Seamline method and Histogram Matching for the mosaicing but ...
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0answers
61 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 ...
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0answers
50 views

Is Images Concatenation in the Processing toolbox working in QGIS 2.8?

I want to make a single multiband .tiff image out of 7 bands that I have downloaded from USGS Earth Explorer and for that I used images concatination in the processing toolbox. I have loaded the 7 ...
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0answers
48 views

Landsat Data to Map Slums in India

I am working on a project to answer the following geographic question: How much have slum areas increased in Mumbai, India, since the 1970's (or earliest data). I have downloaded LandSat imagery and ...
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1answer
25 views

Rendering thumbnails of a GPX track with my own tiles as base layer

I created my own Map using Tilemill. Now I'd like to display thumbnails of a GPX track where my map is the base layer. Do you have any idea how to do this performantly? I wrote a script that does it ...
0
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1answer
73 views

creating a random raster image using gdal

I want to create a random image containing say three classes with predefind percentages of each of the classes using gdal in python.Any sample code would be very appreciated.
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0answers
26 views

Need to add an Image over my map

I am working on loading an image from my computer on my map. Using map.addLayer(). No example of ol3 is of help. Can anyone please help me with adding an Image in a layer over the ol3 map?
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0answers
59 views

Clip Image by polygon and create memory raster

I need to write a code in c++ that can clip an image (4 bands) by using individual polygons in a shape file. I need to access the values of pixels (from all 4 bands) are clipped by a polygon. I do not ...
0
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0answers
36 views

Raster displaying in ArcGIS

Can anyone please explain this to me? I need the image to be displayed right in any case as I will be using it in different programs. When I open this raster image in an existing ArcGIS map it ...
4
votes
1answer
67 views

Automate Exporting of Rasters Using Renderer in ArcGIS

It is possible to export rasters in ArcMap by right clicking the layer-> Data-> Export: You can then click 'Use Renderer' check box to ensure the image you export uses the current ...
1
vote
1answer
54 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 ...
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0answers
53 views

Pansharping Problems with Landsat8

I downloaded Landsat 8 Data from Earthexplorer and used that Workflow: http://courses.neteler.org/processing-landsat8-data-in-grass-gis-7/ Now I want to pansharp the Landsat 8 Datas. For that I used ...
0
votes
1answer
84 views

Draw Openlayers 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 a image of the current user view with some interactive elements. I saw this ...
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0answers
123 views

Scaling Images with OpenLayers

I have the same image (exactly the same dimensions) in Google Maps as in OpenStreetMap, but the scaling of the image in OSM is totally different. The scaling in Google Maps is after my opinion the ...
0
votes
2answers
173 views

Orthophoto Free Download?

I'm looking for Image datas for East Africa. Specifically for Rwanda. Does anyone know if such data are available at all free? My target is to digitize roads and buildings with the help of image ...
2
votes
1answer
57 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
1
vote
0answers
24 views

Raster Vector stack

I want clipped image of NDVI for a particular area. I did raster calculation for getting the image with NDVI values. After that I tried extraction function clipper. In this function we have to use two ...
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0answers
21 views

Exporting Map to a PDF…it all jumps around! [duplicate]

When I try to export my map from the composer into a PDF or image the base map (Google map using open layers) It moves and so isn't inline with the other layers I've put on.... It jumps different ...
3
votes
2answers
209 views

High resolution satellite

Can any one tell me from where I can buy commercial High resolution Satellite images for Biodiversity research ? I need some websites that sells these kind of images ?
1
vote
1answer
259 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.
3
votes
2answers
233 views

Which method is better for display terrain in OpenLayers?

I want to display terrain in OpenLayers. So, I tried to use dem(.img) and convert it to dem(.jpg) on QGIS. But, the effect is very bad. My expected effect is (This picture is captured from google ...
0
votes
1answer
154 views

How to add image(.jpg) to OpenLayers?

This is my website for test: http://www.cv.nctu.edu.tw/shapefile-js-openlayers/ol_simple.html My dem data is (.jpg). var inProj = new OpenLayers.Projection('EPSG:3826'); var outProj = ...
0
votes
2answers
538 views

How to read and write tiff image and locate pixels and bands of images in R

I'm new in R I want to know how to read and write tiff format image in R and how to use R to locate pixels and bands of images My environment is in Windows when I try to read tiff image it shows ...
1
vote
1answer
130 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) ...
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0answers
16 views

I have discordant color differences when i place two or more Landsat8 images side-by-side in a mosaic?

Despite My efforts, i still see . For example, one image may be lighter than the other or less saturated, please look to the mosaic.
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0answers
52 views

.tif image file cropping

following image has black portion on all side which value is [-inf], that what was showing in ENVI. How can I crop this black portion using that [-inf] value?
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2answers
553 views

Import Aerial Images from Google into QGIS?

QGIS 2.6.1, Windows 7 I am looking to import an image from Google Earth into an existing QGIS project. Is it possible to download geo-referenced images from google maps (or google earth) and import ...
5
votes
4answers
487 views

Is there a way to filter the colors out of an image?

I am using ArcGIS 10.2 to show a facility's size and position in a project area. I was not given any shape files or survey files of the area. I only have a deed (.pdf) with a B&W sketch of what ...