ECW (Enhanced Compression Wavelet) is a proprietary wavelet compression image format optimized for aerial and satellite imagery.

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Enabling Erdas ECW files in gdal

I want to enable read support from Erdas ECW files in gdal on windows. I have GDAL binaries from http://www.gisinternals.com/sdk/ and i also have a self compiled version. when compiling myself I ...
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28 views

How do you extract the data behind a raster histogram

Bit of a newbie, so this may be a daft question. I have an .ecw picture - it is has no CRS, as it is a picture taken at ground level with an NIR camera. It was originally converted from a RAW image. ...
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29 views

Enable ecw QGIS 2.4 on Linux Mint 16

I upgraded to Mint 16 and QGIS 2.4 and unable to get ecw to work following various guides available. Anyone willing to explain how to and why it is so hard. I run it on a windows machine out of the ...
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63 views

Display Background Value as hollow, for more than one set of RGB values

I have two overlapping .ecw layers of the same area, though one is clipped in the middle, with a white edge. When I set the background value to 255,255,255, and define it as hollow, it only hollows ...
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621 views

Why is GDAL ECW compression much poorer than ECW compression from ERDAS

We use ECW compressor shipped with ERDAS Imagine to export Orthoimagery for our different departments. Because we are facing problems with the Imagine license server, we had to choose GDAL (built with ...
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Geoserver 2.6 with ECW support

Did read "Geoserver 2.1.1 with ECW support" but when I look at the link - http://docs.geoserver.org/stable/en/user/data/raster/gdal.html, it refers MSVC installation and other vague Window binary ...
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75 views

QGIS crashes when trying to open ecw files

I added Ubuntugis unstable repo and installed Qgis, libgdal-ecw-src, libecwj2-3.3 but still does not work. When I attempt to open an ecw file with Qgis it crashes and tells me: 'std::length_error': ...
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115 views

Problems installing libgdal-ecw package

I have problems to visualize ecw files for qgis 2.3.0 using ubuntu 12.04 LTS. From terminal, following the instructions for qgis 1.8 found at ECW for QGIS 1.8 in Ubuntu 12.04, because launching the ...
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125 views

Uninstall ERDAS ECW/JP2 SDK Version 5.0 (Ubuntu)

I am using Ubuntu Linux as main OS when it comes to geoprocessing but I am not yet an expert using it. I recently needed QGIS to have ECW support, so I followed the instructions of Luke in the ...
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147 views

Trying to build GDAL's ECW plugin in 64 bit Linux

I'm trying to build the GDAL's ECW plugin in Linux. I'm using the latest version of the SDK from Intergraph's site (5.0). It fails because it tries to compile against the 32 bit version of the ...
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157 views

Ecw not supported with qgis-mapserv-fcgi but supported in QGIS Desktop - resolved

I have problem with qgis-mapserver version 2 and ECW. Qgis Desktop works well with ECW (gdal support for ecw with the library ERDAS_ECWJP2_SDK-5.0) but not qgis-mapserver (not supported file in ...
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114 views

Error: basic_string::_S_create, (trying to use .ecw files)

I have a problem, after resolving my problem with: .ecw is not a supported data file. I am in a new one. When I try to load an .ecw file in QGIS it says: basic_string::_S_create
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219 views

Does qgis_mapserv.fcgi segfault because ECW data is used?

I've compiled qgis from source, and when I call qgis_mapserv.fcgi in my browser with REQUEST=GetProjectSettings (and my map file set via map=) is returns the XML correctly. But if I then try to ...
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179 views

How to add new raster store and publish for ECW fromat in GeoServer 2.4-RC2?

I am using GeoServer 2.4 RC2 and Tomcat7 on windows xp OS. I have extracted the gdal-data.zip (2.4.0) and geoserver-2.4-SNAPSHOT-gdal-plugin into Tomcat 7.0\webapps\geoserver\WEB-INF\lib. Now ...
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19 views

Gamma correcting ECW

we would like to modify an existing ECW file with a gamma correction in order to make the image less colourful. Is there a way to do this using e.g. GDAL?
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40 views

Problem zooming in on ECW files in QGIS

I opened a 490mb ecw image in QGIS on my mac (using the ecw 1.10.1 GDAL-ECW plug-in & 5.1.1. ERDAS Image Compression SDK read-only for desktop). The ecw is loaded in less than a second, but it ...
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85 views

ERDAS Imagine ecw compression settings

We have some jp2 or img satellite images that we compress to .ecw using ERDAS Imagine. We have realized that with some images we are losing too much information while doing that. What i wanted to ask ...
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58 views

Raster format similar to ECW

I need an alternative to the ECW format that we currently have for a new series of Ordnance Survey maps. The ECW format looks clearer and less pixelated than the new maps in Tif format (in QGIS). ...
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191 views

ECW files to geoserver 2.4

I'm trying to add .ecw files (20 orthophotos) to geoserver 2.4. Geoserver is running on an ubuntu 12.4. Vserver. I'v already installed the GDAL plugin. Is this the right format for the ...
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133 views

Is ERDAS 2011 or ArcGIS 10.1 best to use when mosaicking 100's of ECW image files?

I have to perform hundreds of imagery files and they are in ECW files. They are 1 ft resolution and are in quarter quad and came from BLM but they are product by NGA. I wonder which software is the ...
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Assign spatial reference for 1000 different ECW raster datasets using 1000 different *.prj files through python programming or .net

I am having 2000 ECW raster datasets without spatial reference and also I have 2000 *.prj files in another folder. I know only the way as right click on raster datasets-->properties-->Spatial ...
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356 views

ECW Compression Engine Error in ERDAS Imagine

We have some IMGs that we're trying to convert to ECWs with the fourth band activated to mask the wretched black null data borders. The instructions we got from ERDAS were to create an AOI and export ...
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Price range on ERDAS ECW-JP2 SDK Version 5

Do anyone have some information on estimated prices on the OEM key for desktop write of the Erdas ECW SDK : ...