[Freegis-list] OpenEV 0.9.0 Release
Thu, 28 Sep 2000 22:11:33 -0500
I am pleased to announce the 0.9.0 release of OpenEV. Binaries are available
for Windows 98/NT/2000, Linux, Solaris and Irix. Source, further details,
mailing lists and so forth are available at:
OpenEV is an application for viewing and analysing raster and vector geospatial data.
Objectives - OpenEV will:
Run on popular platforms (Linux, Windows, Solaris, IRIX).
Handle raster and vector data.
Support 2d and 3d display.
Gracefully handle very large (gigabyte) raster datasets.
Support multi-channel, and complex raster datasets.
Understand and interpret georeferencing information, and provide on-the-fly
reprojection of datasets.
Provide view manipulation functions (pan, zoom, rotate) at interactive frame rates.
Provide a powerful image analysis tool.
Serve as a component in a variety of image analysis applications.
OpenEV utilizes OpenGL, Python, Gtk+, GDAL, and PROJ.4 technologies.
I believe OpenEV's current strengths are:
o High performance display of even very large images.
o Support for 16bit, floating point and complex raster display with
sensible scaling, and display access to the underlying raster values.
o Highly customizable, and extendible since the GUI is written in Python.
o 3D support.
I think that OpenEV can grow into:
o similar uses as IDL due to integration of GDAL, OpenEV and Numerical Python.
o Sophisicated GIS vector display as improvements are made to rendering, and
integration with OGR (my vector library) tightens up.
o As a display front end for GRASS, as GDAL is upgraded to use libgrass, and
some level of integration with GRASS commands is achieved.
o As a data translator, and transformer as GDAL export capabilities are
more fully utilized.
o A very projection savvy environment, once a user projection definition
dialog is implemented, and vector on-the-fly reprojection is implemented.
Areas I think OpenEV is currently weaker than it could be:
o It's dependence on OpenGL can cause a substantial performance hit on
unaccelerated platforms, especially doing 3D viewing, and vector editing
operations. Many of the difficult to fix, and reproduce bugs also seem
to be OpenGL related.
o It depends on quite a few packages, which can make it a bit of a job
to build completely from source.
o Programmer documentation is not up to the desired level.
o Very limited image analysis tools available.
o Vector integration isn't up to what you would expect of a vector
focused package (which OpenEV is not).
I believe OpenEV can be a very useful package as it stands today, and I
encourage folks looking for a comfortable, customizable, extendable
raster, and vector viewing environment to considering downloading and trying
I, and the OpenEV team are also keen on finding other developers interested
in improving and extending OpenEV.
Note, I have sent this to a number of lists, and newsgroups. I appologise
to those getting this message multiple times.
I set the clouds in motion - turn up | Frank Warmerdam, email@example.com
light and sound - activate the windows | http://members.home.com/warmerda
and watch the world go round - Rush | Geospatial Programmer for Rent