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2015-12-13 01:24:18 -0600 commented answer Enable Multithreading with TBB during cascade training

i dont think GPU is needed, negative sampling parallelization, at least with duplicates, would solve main problem.

2015-12-13 01:24:04 -0600 commented question opencv_traincascade (neg)image reader parallelization

Still no progress here? Btw one of methods to erase duplicates is make second pass on sampled negatives, it wont take long at all comparing to sampling time.

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2013-08-08 14:13:17 -0600 asked a question ImportError: /lib64/libavcodec.so.54: symbol avpriv_update_lls, version LIBAVUTIL_52 not defined in file libavutil.so.52 with link time reference

I have installed OpenCV on Fedora 17, and it gives me this error after i try to import cv2 in Python:

Python 2.7.3 (default, Jul 24 2012, 10:05:38) [GCC 4.7.0 20120507 (Red Hat 4.7.0-5)] on linux2 Type "help", "copyright", "credits" or "license" for more information.

>>> import cv2
Traceback (most recent call last): File "<stdin>", line 1, in <module>
ImportError: /lib64/libavcodec.so.54: symbol avpriv_update_lls, version LIBAVUTIL_52 not defined in file libavutil.so.52 with link time reference

What this can be about? i installed ffmpeg-devel

ffmpeg version N-55387-ge1a5ee2 Copyright (c) 2000-2013 the FFmpeg developers
built on Aug  8 2013 17:48:16 with gcc 4.7.2 (GCC) 20120921 (Red Hat 4.7.2-2)
  configuration: --enable-shared
  libavutil      52. 41.100 / 52. 41.100
  libavcodec     55. 24.100 / 55. 24.100
  libavformat    55. 13.102 / 55. 13.102
  libavdevice    55.  3.100 / 55.  3.100
  libavfilter     3. 82.100 /  3. 82.100
  libswscale      2.  4.100 /  2.  4.100
  libswresample   0. 17.103 /  0. 17.103
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2013-05-16 05:50:02 -0600 asked a question 2.4.5 with TBB under MinGW in Windows compilation did not work as well

Hello,

been trying to compile OpenCV with TBB and here is what i get:

image description

What i am wrong at?

2013-05-15 14:05:00 -0600 asked a question 2.4.5 with TBB windows x64 (Windows 7) installation problem

I am trying to install OpenCV for 2 days now. I am using Visual Studio 2012, have Python and all needed libraries, downloaded TBB and few others which i dont need.

CMake does not add up TBB, it downloads something and asks me only about TBB_STDDEF_PATH, and i add him a path to tbb_stddef.h file. I have these path variables added: OPENCV_BUILD: C:\OpenCV\opencv\build OPENCV_DIR: C:\OpenCV\opencv\build\x64\vc10 (tried withh vc11 as well) PATH: ...;%OPENCV_DIR%\bin;

Just in case i copied all \x64\vcXX\lib files to \Debug and \Release subdirectory, for all vcXX both x86 and x64.

I am constructing Build to C:\OpenCV\Build directory.

All i need are applications compiled for TBB, opencv_traincascade.exe mostly. Im coding on python, so i dont need rest for now.

After CMake generation done, i close it, open VS2012, wait until all dependencies being scanned and press Build button for either debug or release and here the most errors i get:

Ошибка 33 error LNK1104: не удается открыть файл "....\3rdparty\lib\Debug\tbbd.lib" C:\OpenCV\Build\modules\core\LINK Ошибка 82 error LNK1104: не удается открыть файл "....\lib\Debug\opencv_core245d.lib" C:\OpenCV\Build\modules\imgproc\LINK

in english would be something like "cannot open file"

So what i am doing wrong?