Install cross-platform computer vision library OpenCV in CentOS 6.5

Install cross-platform computer vision library OpenCV in CentOS 6.5

Opencv is a cross-platform computer vision library that can be used for image processing. The following uses Opencv2.3.1 as an example. If you do not know how to install it, you can check it out.

Opencv is a cross-platform computer vision library that can be used for image processing. How can we install it in centos? The following describes how to install Opencv2.3.1.

I. Install dependency packages

You can install the dependency package using yum. The following installation packages are required:

Yum install cmake gcc-c ++ gtk +-devel gimp-develgimp-devel-tools gimp-help-browser zlib-devel libtiff-devel libjpeg-devellibpng-devel gstreamer-devel libavc1394-devel libraw1394-devel libdc1394-develjasper-devel jasper-utils swig python libtool nasm

Ii. Generate and install the make File

Opencv2.3.1 can be downloaded from the official website (visit http://opencv.org/at this time to visit the website of the official website). If you need it, contact me.

The procedure is as follows:

(1) cdopencv2.3.1

(2) cmake-DCMAKE_BUILD_TYPE = RELEASE-D CMAKE_INSTALL_PREFIX =/usr/local-DBUILD_NEW_PYTHON_SUPPORT = NO.

// Line44 error may be prompted here. Go to cmakelist.txt and comment out row 44th.

// Note that NO is followed by a space +.

Indicates that the cmake file is successfully generated.

(3) cmake

(4) sudo makeinstall

Iii. Configuration

Create a file/etc/ld. so. conf. d/opencv. conf

Add/usr/local/lib to the file

Save and execute the configuration

Sudoldconfig

// Because all the/etc/ld. so. conf. d/*. conf files are included in the ld. so. conf file.

Iv. environment variable configuration

Sudo vim/etc/bashrc

PKG_CONFIG_PATH = $ PKG_CONFIG_PATH:/usr/local/lib/pkgconfig

ExportPKG_CONFIG_PATH

Save and run

Source/etc/bashrc

5. Test whether the installation is successful

Cd OpenCV-2.3.1/samples/c

Chmod + xbuild_all.sh

. /Build_all.sh

After compilation, execute

. /Facedetectcascade = "/usr/local/share/OpenCV/haarcascades/haarcascade_frontalface_alt.xml" -- scale = 1.5 lena.jpg

If the installation is successful, there will be a blue circle on lena's face.

The above describes how to install OpenCV in CentOS6.5. Note that after the installation is successful, you need to configure OpenCV. This step cannot be saved.