Feburary 19, 2012 - Snow Biking

See how much more fun fat tires are!!!

December 10, 2011 - Bike Seven

I've finished assembling my Bike Seven PCB circuit that was manufactored by BatchPCB. The Bike Seven device is powered by a Biologic ReeCharge Power Pack. Next, I need to design a 3D printed enclosure before actually using my Bike Seven on the trails.

October 9, 2011 - Biking Activities

Last weekend at White Ranch it was about 75 degrees but this weekend at Golden Gate it dropped under 40 degrees. At least I finally got to ride my Pugsley in Snow!!! The picture of the circuit board is a PCB prototype for a bike computer that talks to Android via Bluetooth.

September 3, 2011 - Ward

Hiking in Ward, CO this weekend.

June 23, 2011 - Pugsley

My new Surly Pugsley bike from Full Cycle in Boulder, CO.

May 8, 2011 - Sparkfun AVC Competition

Following the 2011 Sparkfun AVC competition I decided to put together a quick demo for connecting an Android phone to an Arduino with a Bluesmirf Bluetooth module. The Daily Camera also caught a couple of pictures (Jeff and Nassar and Nassar and Bender) of my Planet Express Team preparing our car for the competition.

April 5, 2011 - Planet Express Demo Video

Check out the demo video from my Planet Express Team for the 2011 Sparkfun Autonomous Vehicle Competition.

February 13, 2011 - texgz

Released a package for manipulating images in the texgz image format via a Gimp plugin or C code. The texgz format is specifically designed to work well with OpenGL ES and uses zlib for lossless compression. The following formats are supported by texgz: RGBA-8888, RGB-888, BGRA-8888, RGB-565, RGBA-4444, RGBA-5551.

November 13, 2010 - Gears

I've finally finished porting Gears from OpenGL 1.x to OpenGL ES 2.0.

September 20, 2010 - Hugin

I've been playing around with some Open Source panorama stitching software called hugin. It's very easy to use, creates great results and is available on most OS. Here are a couple of samples from Horsethief Bench and Lion Gulch.

April 1, 2010 - Droid

I just received a Droid as part of Google's "Device Seeding Program" for developers who have an application on the Android Market with at least 5000 unique downloads and 3.5 star rating. The Gears for Android(TM) app qualified with 26682 total downloads, 3953 active installs and a 4 star rating. Thanks Google and everybody who tried it out.

February 2, 2010 - Hawai'i

I just got back from a trip to O'ahu Hawai'i to visit some friends from college. I got some good pictures of a rainbow on the Pu'u Pia Trail, Kaene Point State Park, a sunset on the North Shore and Kaaava Valley.

October 4, 2009 - Elk

It's hunting season so I guess the elk are hiding in the place you would least expect to find them :-)

December 7, 2008 - Fall Camping Trip

Here are some more pictures from a fall camping/biking trip with my dad and our friend Nard.

September 15, 2008 - Projective Reconstruction

I decided to take this last summer off to revisit my graduate work on 3D reconstruction. When taking pictures of a subject from different viewpoints not all of the features are visible in all of the pictures. The occluded features can cause difficulty for existing 3D reconstruction algorithms. I've come up with a new algorithm based on the KL procedure for gappy data to try and solve this problem. My results are presented in Projective Reconstruction with Missing Data.

August 15, 2008 - Larrabee

This paper Larrabee: A Many-Core x86 Architecture for Visual Computing describes some of my work at Intel with Stephen Junkins (Intel), Greg Johnson (UT-Austin) and Bill Mark (UT-Austin) on Irregular Z-Buffer rasterization.

December 21, 2005 - GP2X

This month I've been working on a Simple Game Engine for the GP2X handheld game console.