GPU

Jetson
http://www.jetsonhacks.com/ 192 CUDA core Kepler GPU (APU, accelerated processing unit combines cpu/gpu)

http://www.linuxfromscratch.org/blfs/view/svn/general/opencv.html

http://www.jetsonhacks.com/2015/05/25/quadcopter-control-using-image-recognition-on-jetson-tk1/?relatedposts_hit=1&relatedposts_origin=222&relatedposts_position=1

http://connecttech.com/product-category/form-factors/nvidia-jetson-tx2-tx1/

parallella
https://www.parallella.org/ 18-core credit card sized computer • #1 in energy efficiency @ 5W • 16-core Epiphany RISC SOC • Zynq SOC (FPGA + ARM A9) • Gigabit Ethernet • 1GB SDRAM • Micro-SD storage • Up to 48 GPIO pins • HDMI, USB (optional) • Open source design files • Runs Linux • >10,000 boards shipped • Starting at $99

Links
Caffe_berkeley_vision jetson tegra board on uav implmnt. optical flow, tracking, object detection and github code.
 * https://flytbase.com/, https://www.youtube.com/watch?v=wSFYOw4VIYY commercial version of OpenKai(github)