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6

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.


3

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 ...


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I thought I would add a better answer for anyone else observing this thread. So, if you've already gone through the trouble of building opencv on the device, you've probably followed the instructions here: http://docs.opencv.org/doc/tutorials/introduction/linux_install/linux_install.html In which case, if you don't add the -D args to dynamically override ...


2

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 ...


1

First, check pixel formats are supported by your output device driver: v4l2-ctl --list-formats -d /dev/devicedriver the pixelformat you want to pass to the v4l2-ctl command line is the fourcc shown in the result, eg: Pixel Format : 'YUYV' in this case your command line would be: v4l2-ctl --set-fmt-video-out=width=640,height=480,pixelformat=YUYV If ...


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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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