Hot answers tagged opencv
If by OpenCV you mean the computer vision libraries at http://opencv.willowgarage.com/ then they are already packaged for debian by the Debian Science Team. Your best bet is to download the debianised source package from your nearest debian mirror, modify the debian/rules and/or Makefile or configure etc as needed to compile correctly on the raspberry pi ...
Try building a cygwin port of OpenCV instead of using the windows one. Go to Cygwin ports, follow their instructions & download the "opencv" package (listed under graphics in "setup.exe"), make sure to select the "src?" checkbox. Build it. That's it.
The reason for that may be cache trashing. CPU load is not just pure computation. It is CPU activity i.e. everything except sleeping and waiting for I/O. If a single process is running then it can probably use most of the CPU cache(s). If you start a second process then the Kernel may be clever enough to share the code between the two processes but they do ...
To install OpenCV using the terminal on Ubuntu: $ su - # apt-get update # apt-get install build-essential # apt-get install libavformat-dev # apt-get install x264 v4l-utils ffmpeg # apt-get install libcv2.3 libcvaux2.3 libhighgui2.3 python-opencv \ opencv-doc libcv-dev libcvaux-dev libhighgui-dev ...
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