Smathermather's Weblog

Remote Sensing, GIS, Ecology, and Oddball Techniques

Archive for February, 2013

PostGIS Onesie, redux– side-by-side comparison

Posted by smathermather on February 9, 2013

I thought one more post for procrastination sake. Brother 4 years ago:

and sister today:

20130209-103917.jpg

Posted in PostGIS, PostgreSQL | Tagged: , | 2 Comments »

PostGIS Onesie Redux

Posted by smathermather on February 9, 2013

Following in her brother’s (and father’s) footsteps:

20130209-104044.jpg

Posted in Other, PostGIS, PostgreSQL | Tagged: | 2 Comments »

3D Renderers– a woefully incomplete survey

Posted by smathermather on February 4, 2013

Recent exploration into PostGIS 3D tools has reminded me of my love of renderers.  First, there’s PovRay.  PovRay is and always will be my first love.  I’ve done so many fun things with it.

Screen shot 2013-02-04 at 8.10.20 PM

In short, PovRay is a mathematicians renderer– mathematical primitives, advanced ray tracing tools, and a C-like control language make for an abstract but powerful environment.  I like to use it with geographic data, arranged in a planar coordinate system with an orthogonal camera, boom– map.  Check out my povray blog posts to see some of the fun I have had there:

https://smathermather.wordpress.com/category/optics/pov-ray/

Sadly, the project has been pretty quiet of late (but never goes away, which is nice).  But there are other fun renderer kicking around.  For one, there’s the Physically Based Renderer.  This isn’t just an open source 3D renderer, but a book that teaches you about writing a physically-based renderer, which is really cool.  So far, I haven’t ponied up the $70, nay $61 for the book at Amazon, but one day I will.  What I like about PBRT, it can render arbitrary spectral bands, making it a great remote sensing simulation tool (PovRay can be patched to do this too).

Screen shot 2013-02-04 at 8.03.38 PM

Finally, a renderer that has caught my attention is Mitsuba, which is inspired by PBRT.

Screen shot 2013-02-04 at 8.06.34 PM

 

Posted in 3D, Other, POV-Ray | Leave a Comment »