Member Avatar for sumit3gupta

GUYs, pls help me in installing openCV in win7 64-bit, i downloaded opencv 2.3 its round about 141mb and it has some cmake files. i got it from here
http://sourceforge.net/projects/opencvlibrary/files/opencv-win/2.3.1/
and
i dont know how to proceed further?

  • 2 Contributors
  • 1 Reply
  • 350 Views
  • 8 Hours Discussion Span
  • Latest Post Latest Post by haroonaejaz

Dani AI

Generated

Short answer for : you have two practical routes — use the Windows “prebuilt” package (fast) or build 64‑bit binaries yourself with CMake + Visual Studio (gives a true x64 build). is right that older prebuilt VS2008 packs can work on Win7, but those are often 32‑bit: on a 64‑bit machine you’ll get best results by either using a matching x64 prebuilt or building OpenCV for x64 yourself. (opencv.org.cn)

If you want the easiest path: grab the OpenCV Windows package that matches your compiler, unpack it to a short path (for example C:\OpenCV). Set an OPENCV_DIR environment variable to the build/install folder and add its bin folder to your PATH (so DLLs are found at runtime). A safe, minimal example to set the OpenCV directory from an administrator command prompt:

setx -m OPENCV_DIR "C:\OpenCV\Build\Install"

Then add %OPENCV_DIR%\bin to the system Path via System Properties -> Environment Variables (editing Path there avoids common setx truncation problems). (opencv.org.cn)

If you need a true 64‑bit OpenCV (recommended on Win7 x64) build it from source: install CMake and a Visual Studio with the x64 toolchain (VS2010+ recommended), run cmake-gui pointing “source” to the opencv folder and “build” to a new build directory, choose the Visual Studio Win64 generator, Configure -> Generate, open OpenCV.sln in Visual Studio, then build ALLBUILD and INSTALL (Release). In your projects add the include path, the correct x64 lib folder, and link the opencv<module><version>.lib files (debug builds use names ending with d). Make sure your Visual Studio project platform is x64 if you built x64 libs. (opencv.org.cn)

Quick troubleshooting notes: unresolved linker errors usually mean missing .lib entries or architecture mismatch (x86 vs x64). “ImportError” or “cannot import cv2” in Python usually means Python vs OpenCV bitness mismatch — install/built OpenCV that matches your Python (32/64). Missing DLLs at runtime = bin not on PATH or DLLs not copied next to the exe. For details and screenshots, see the official OpenCV Windows installation and Visual Studio tutorials. (docs.opencv.org)

Member Avatar for haroonaejaz

i dont know about the problem you are facing. but for me 2008 version works on windows 7

here id download link.
http://sourceforge.net/projects/opencvlibrary/files/opencv-win/2.1/OpenCV-2.1.0-win32-vs2008.exe/download

GUYs, pls help me in installing openCV in win7 64-bit, i downloaded opencv 2.3 its round about 141mb and it has some cmake files. i got it from here
http://sourceforge.net/projects/opencvlibrary/files/opencv-win/2.3.1/
and
i dont know how to proceed further?

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.