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2014-07-16 12:24:55 -0600 commented answer Does OpenCV have an offline API reference?

If PDF is ok, you can find it at http://docs.opencv.org/opencv2refman.pdf

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2014-07-15 06:03:48 -0600 commented question OpenCV not detecting webcam on BeagleBone Black
  • Is Video4Linux (V4L/V4L2) installed on the BBB?
  • Is the opencv distribution on BBB built WITH_V4L / WITH_V4L2 flags?
2014-07-15 06:02:43 -0600 answered a question OpenCV not detecting webcam on BeagleBone Black
  • Is Video4Linux (V4L/V4L2) installed on the BBB?
  • Is the opencv distribution built WITH_V4L / WITH_V4L2 flags?
2014-07-15 05:42:27 -0600 answered a question Speed up queryFrame/imencode

Capture frames in one thread and put them into a queue. From a second thread, pull from queue, encode and dispatch.

2014-07-15 05:35:28 -0600 answered a question haarcascade_mcs_lefteye.xml - for which eye?

According to Mastering OpenCV book page 271, it's the left eye of the subject:

...If the XML filename says "left eye", it means the actual left eye of the person, so in the camera image it would normally appear on the right-hand side of the face, not on the left-hand side!...

2014-06-11 12:16:09 -0600 commented question Opencv c++ linker problem ARM

Sorry, I'm now confused whether your opencv build succeeded or not.

Before replying to the comment regarding toolchain.cmake file changes, I'd like to know this : If the cmake cross build did not finish, where did the /usr/lib/libopencv_.so files and /usr/include/opencv directories come from? Have you by any chance installed opencv package from ubuntu repository using apt-get or something?

Also can you run command "readelf -h /usr/lib/libopencv_core.so" and report value of "Machine:"?

2014-06-11 07:22:22 -0600 commented question Opencv c++ linker problem ARM

In that case, first try a simple compile, not link, of IPCamera.cpp with this command line:

arm-linux-g++ -H -I/path/to/opencv/include IPCamera.cpp

The -H option is to output all the header files searched by g++. The -I option is to set search directory for header files. Note that it's "I" as in "Image", not an "l" as in "london".

2014-06-10 12:12:12 -0600 commented question Opencv c++ linker problem ARM

If OpenCV build was successful, the opencv installation directory should have a /lib (with libopencv_*.so files) and a /include (with ./opencv2 and ./opencv subdirectories). Do you have them?

2014-06-10 00:06:10 -0600 commented question Opencv c++ linker problem ARM

What compilation/build errors are you getting with that command?