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
1answer
25 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
33 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 ...
1
vote
1answer
28 views

How to calculate degrees per pixel in a given image? Or .nth of degree?

I am trying to make very rough estimates of Lat/Long coordinates in some random parking lot images. If I visit any such random parking lot on a Google map, I can click some driving area and Google ...
1
vote
1answer
28 views

Finding coordinates of the image corner

I have a .bmp image with a map. For creating image i used a Ingeo 4.4 and function MakeImage() What i know: Height an Width of bmp image dpi Map Scale Image Center's coordinates in meters. What i ...
1
vote
1answer
31 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
80 views

Spectral profile (z-profile) viewer for ArcGIS

I have multilayer raster with 6 bands. Is there a way to select one specific pixel and to display the z profile (the values of each band) for this pixel as a chart or table? I am looking for a tool ...
1
vote
1answer
43 views

Georeferencing Image using saved Link Table from another Image?

I had a scanned map that I did did a georeferenced a few weeks ago and saved the link table. Now I have two more scanned map that need to do the same thing. It is the same area and one of them I did ...
1
vote
1answer
35 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 ...
0
votes
1answer
45 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 ...
4
votes
0answers
569 views

I have a Web Application (ASP.NET) made ​​in ArcGIS Server Manager. How to create a button for the user to export his vision for PDF / Image?

I am using ArcGIS Server Manager to create Web Applications (ASP.NET). I would like the customer to access has an option to export your vision to PDF or Image, or both. I would like to generate the ...
3
votes
0answers
248 views

Convert land-based camera image pixel x,y to ground lat/long or x,y,z

I have a number of cameras at various known locations (x,y,z) and directions that are above ground about 20 feet pointed at different ground locations about 100 feet away from each camera, and whose ...
3
votes
0answers
190 views

How to read pixel values from an image server layer with ArcObjects?

I'm having a problem with reading pixel values from the image server layer. The image server layer class implements IRasterLayer, so when I tried to read pixel values using IRaster2 obtained through ...
2
votes
0answers
36 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
47 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
0answers
75 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
508 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
0answers
19 views

Stereo-pair Image Registration

Is there a simple command line or python based way to visually register a pair of overlapping stereo images and clip the non-overlapping areas out? These images do not have spatial information ...
1
vote
0answers
6 views

Imagine 2014 displaying images with large no-data values

I'm starting to use Imagine 2014 after a recent upgrade. The images I'm using have data values in the range of approximately -.02 to 350.0. The no-data values bordering the data has a value of 2 ...
1
vote
0answers
28 views

Can I tell QGIS to load/show only a part of an image?

can I tell QGIS to load/show only a part of an image without to extract this region as an extra/ new image?
1
vote
0answers
136 views

How to retrieve latitude/longitude from Tiff with Geotools

I am new to Geotools and I have to work on project which includes a set of tiff image maps. In that I need to get latitude/longitude for a given point. Ex: When mouse click occurs I want to get the ...
1
vote
0answers
91 views

Free cartographic texture resources

I've been trying without success to find free textures to use in TileMill. I'm looking for fairly simple, abstract textures, like a dotted pattern (to indicate national parks). Are there any well ...
1
vote
0answers
67 views

proportion of image layer in OL

I tried create map with single image used OL. But I have a trouble: image in map has a wrong proportions. Img: 1540 x 1481 Img in map: 2858 x1481 My js code: $(function (){ var map = new ...
1
vote
0answers
197 views

Question for MOD35 cloud mask

I have a question about processing MOD35 cloud mask image. I worked reprojection on MOD35 cloud mask image using MODIS Swath Tool. The processed results of MOD35 cloud mask are consist of 6 band ...
1
vote
0answers
130 views

How to correlate Image DN with Spectrometer reflectance?

I am trying to develop a system to measure NDVI from the commercial grade digital camera. I am trying to get two bands NIR and RED from the image and apply it for NDVI measurement using diffent ...
1
vote
0answers
143 views

How CONVERT a lat/lon point TO a x/y point ON a world mercator proj image in JS?

Thx to read and think about my problem! :) I have a map world image like that (mercator proj): http://www.learnnc.org/lp/multimedia/14596 And I have a lat/lon point to place on it in javascript, I ...
0
votes
0answers
7 views

Spot 6 ESUN VALUES

I'm using recently Spot 6 and don't know where is the ESUN values for the bands to make the reflectance calibration.
0
votes
0answers
38 views

OpenLayers supported image formats

I need to display ImageLayer in OpenLayers. Which image formats are supported in OpenLayers?
0
votes
0answers
33 views

Positioning and tracing polygons over an image

On QGIS 2.0 - I want to add an image (TIFF or whatever) then resize and correctly position it over a satellite image (openlayersplugin). Then, the task is to create a new shape file layer and draw ...
0
votes
0answers
37 views

Save map canvas as image with drawings

Is there any way to save the map canvas as an image, with the drawings on map? I draw a line on map, and saved it as image, but only the map saved(without line). I used the following code.. ...
0
votes
0answers
5 views

View information raster data in postgresql

I download and use raster2pgsql.exe import tiff image into postgresql. Can i use the query to retrieve the information of the image does not? Information such as: date of capture, capture time.
0
votes
0answers
19 views

Server Side Thumbnails

I am using a combination of base maps from Google, Bing and OpenSteetMap, along with GeoServer and some geo-spatial data stored on a SQL server, as well as OpenLayers to display maps on a website. I ...
0
votes
0answers
29 views

feature position on non-Geo-referenced Image

I use OpenLayers to show Map , when im creating the map, i want to show map image with an ImageLayer and VectorLayers, the image is non Geo-referenced. The use case: i receiving a map image url from ...
0
votes
0answers
71 views

leaflet.js ImageOverlay projection bug

We are trying to display a image over the leaflet map using "ImageOverlay" layer, but it does not work according to expected. In Google Maps works perfectly. Apparently Leaflet just stretches the ...
0
votes
0answers
47 views

Inserted Images distorted on exported Map

I have a map set that has images on top of the map I have created in ArcMap, that I arranged in layout view. I have tried both PNG and Tiff images, to try to keep the resolution as high as possible ...
0
votes
0answers
45 views

save polygon from image to PostGIS database

I'm working on a software to detect buildings from satellite imagery. so far I have managed to separate the building with other objects of the image. My problem now is how to save every building in ...
0
votes
0answers
24 views

How can I upload more than 10 images in a category map?

I did a category map with 30 different categories. For each, I would like to upload an image but the "wizards" permits me to upload only ten images and then one image for "others". Is it possible to ...
0
votes
0answers
78 views

Exporting basemap & Layers as an image?

I need a open-source server-side component for a web-application that can export basemaps + layers to an image format (saved on a db). Being slightly new to GIS, I've managed to find a few tools that ...
0
votes
0answers
36 views

Ignore Transparent Pixels for Bounds Determination

I am displaying an Image using GWT OpenLayers on a map. My Image has transparent pixels and the system which returns my Image returns a footprint that is equal to the image plus the transparent ...
0
votes
0answers
116 views

how to calculate the right resolution for an image overlay in openlayers

I have an image I use as overlay in a vector layer in my openlayer web application. The idea is the same as showed in the example you can find here: ...
0
votes
0answers
239 views

Open Layers override class or method in Android 2.3

I'm implementing my own image loading mechanism for openlayers, because lack of functions in android 2.3 webview. It will get cached images from android db. I wan't to override ...
0
votes
0answers
77 views

Changing projection of base layer

Normally, we change projection of vector data for displaying it over a Google base map. Is it possible to change the projection of base image tiles map? If yes, how we can do that? Any reference or ...