Type.ecw into the File Name field and press RETURN. You should now see a list of.ecw files in the chosen directory. Double click on the.ecw file you want to open, or select the file name and press the Open button to choose the image you want to display. You will now be presented with the following dialog. Choose display to just view. ECW files are not as yet supported within Model Viewer for draping aerial imagery over a terrain. However, by using the freely available ERDAS ER Viewer, users can quickly and easily convert the ECW image file to a JPG file. The JPG file will be created with an associated JGW file, which stores all coordinate data.
- BUG-000110931 - Unable to load Enhanced Compression Wavelet (ECW) files in ArcMap 10.6. BUG-000112244 - PMFs created with Enhanced Compression Wavelet(.ecw) files in ArcMap do not open in ArcReader 10.6. (Specific to ArcReader).
- Download ER Viewer for free. ERDAS ER Viewer is an easy-to-use image viewer which can a read most other common file types, featuring interactive roaming and zooming with very large JPEG 2000 and ECW files.
| Filename extension | |
|---|---|
| Developed by | Hexagon Geospatial |
| Initial release | 1998 |
| Latest release | ECW v3 - ECW/JP2 SDK v5.3 (June 14, 2016) |
| Type of format | Image file format |
| Website | http://www.hexagongeospatial.com/ |
ECW (Enhanced Compression Wavelet) is a proprietarywavelet compressionimage format optimized for aerial photography and satellite imagery. It was developed by Earth Resource Mapping, and is now owned by Intergraph part of Hexagon AB.[1] The lossy compression format efficiently compresses very large images with fine alternating contrast while retaining their visual quality.
In 1998 Earth Resource Mapping Ltd in Perth, Western Australia company founder Stuart Nixon,[2] and two software developers Simon Cope and Mark Sheridan were researching rapid delivery of terabyte sized images over the internet using inexpensive server technology. The outcome of that research was two products, Image Web Server (IWS) and ECW. ECW represented a fundamental mathematical breakthrough enabling Discrete Wavelet Transforms (DWT) and inverse-DWT operations to be performed on very large images very quickly, while only using a tiny amount of RAM.[3] For ECW patents, see US 6201897 and US 6442298. For IWS patent, see US 6633688. These patents have been obtained by ERDAS Inc. through the acquisition of Earth Resource Mapping on May 21, 2007.[4][5] Indirectly Hexagon AB owns these patents because they acquired Leica Geosystems in 2005 who had acquired ERDAS Inc in 2001.[6]
After JPEG2000 became an image standard, ER Mapper added tools to read and write JPEG2000 data into the ECW SDK to form the ECW JPEG2000 SDK. After subsequent purchase by ERDAS (themselves subsequently merged into Intergraph), the software development kit was renamed to the ERDAS ECW/JP2 SDK. v5 of the SDK was released on 2 July 2013.
Properties[edit]
Map projection information can be embedded into the ECW file format to support geospatial applications.
Image data of up to 65,535 bands (layers or colors) can be compressed into the ECW v2 or v3 file format at a rate of over 25 MB per second on an i7 740QM (4-cores) 1.731 GHz processor using v4.2 of the ECW/JP2 SDK. Data flow compression allows for compression of large images with small RAM requirements. The file format can achieve typical compression ratios from 1:2 to 1:100.
The ECW Protocol (ECWP) is an efficient streaming protocol used to transmit ECW and JPEG2000 images over networks, such as the Internet. ECWP supports ECWPS for private and secure encrypted streaming of image data over public networks such as the Internet.
There is a very fast read-only SDK supporting ECW and JPEG2000 which is available for no charge for desktop implementation for Windows, Linux and MacOSX. A read / write SDK can be purchased for desktop and server implementations for Windows, Linux and MacOSX). A full functioning server implementation (using ECW, JPEG2000, ECWP and JPIP) is available within the PROVIDER SUITE of the Power Portfolio (formerly IWS) license.[7]A previous version of the SDK (3.3) is available in open source, and can be used for non-Microsoft operating systems, such as Linux, macOS or Android.
References[edit]
- ^http://field-guide.blogspot.com/2010/07/hexagon-aquires-intergraph.html Retrieved Aug 19, 2011
- ^nearmap
- ^http://www.gisdevelopment.net/interview/previous/ev022.htm Retrieved Feb 21, 2010
- ^http://field-guide.blogspot.fr/2008/10/on-may-21-2007-erdas-announced-purchase.html
- ^https://globenewswire.com/news-release/2007/05/21/97155/0/en/Hexagon-acquires-software-company-within-geospatial-imagery-segment.html
- ^https://leica-geosystems.com/about-us/summary/history
- ^'Archived copy'. Archived from the original on 2013-03-15. Retrieved 2013-03-11.CS1 maint: archived copy as title (link)
External links[edit]
- ERDAS ECW/JP2 SDK V5 FAQ (PDF)[permanent dead link]
- 1.Enhanced Compression Wavelet Image
- 2.EclipseCrossword Word List File
File Type 1Enhanced Compression Wavelet Image
| Developer | ERDAS |
| Popularity | |
| Category | Raster Image Files |
| Format | Binary |
What is an ECW file?
Compressed image created in the Enhanced Compression Wavelet (ECW) format, which was developed by Earth Resource Mapping, but is now owned and maintained by ERDAS; stores an image designed for use with geospatial data.
ECW files are commonly used to store aerial and satellite map projection images. They support 1 to 8-bit continuous image data per layer up to 255 bands.
Open over 400 file formats with File Viewer Plus.Programs that open ECW files
File Type 2EclipseCrossword Word List File
| Developer | Green Eclipse |
| Popularity | |
| Category | Game Files |
| Format | Text |
.ECW File Association 2
An ECW file contains a crossword created by EclipseCrossword, a program used to generate crossword puzzles. It contains a crossword puzzle, which includes each word with its clue and whether it is down or across. ECW files also include the title, author, copyright, and letter width and height of the puzzle.
You can open ECW files in EclipseCrossword. However, the program is only available for Windows. If you come across an ECW file in macOS you can open the ECW file with a text editor since the file is stored in plain text.
You can print crosswords stored in ECW files and save them as webpages in EclipseCrossword. You can also publish ECW puzzles as .RTF, .WMF, .EPS files.