OpenCvSharp5.official.runtime.linux-arm64.slim 5.0.0.20261011

OpenCvSharp Native Runtime Package

This is an internal implementation package for OpenCvSharp. It provides the native OpenCV shared library (OpenCvSharpExtern) for a specific platform.

The managed OpenCvSharp API is intentionally designed to stay as close as practical to the native OpenCV C++ API. See OpenCV C++, Python (cv2), and OpenCvSharp for the main API and data-model differences.

In most cases you do not need to reference this package directly. Use one of the all-in-one packages instead:

• Windows: OpenCvSharp5.Windows or OpenCvSharp5.Windows.Slim
• Linux: OpenCvSharp5 + OpenCvSharp5.official.runtime.linux-x64 (or OpenCvSharp5.official.runtime.linux-arm64 on ARM64)

The OpenCvSharp5.* runtime packages target OpenCV 5.x. An identically-named OpenCvSharp4.* counterpart (OpenCV 4.13.0) is also published for .NET Framework / older runtimes.

🔄 Already using OpenCvSharp4? See the Migration Guide (4 → 5) on GitHub for target framework changes, package/namespace renames, and OpenCV 5 API changes.

The Linux linux-x64 and official.runtime.linux-arm64 packages are built on manylinux_2_28 (glibc 2.28) and work on Ubuntu 20.04+, Debian 10+, RHEL/AlmaLinux 8+, and other Linux distributions. The full (non-slim) packages include FFmpeg (LGPL v2.1) and Tesseract statically linked.

Linux highgui dependency: The full linux-x64 package uses GTK3 for highgui (Cv2.ImShow, Cv2.WaitKey, etc.). GTK3 is pre-installed on standard Ubuntu/Debian/RHEL environments. In minimal or container environments where it is absent, install it manually:

• Ubuntu/Debian: apt-get install libgtk-3-0
• RHEL/AlmaLinux: dnf install gtk3

For headless servers or minimal containers that still need videoio, dnn, ml, contrib, stitching, etc., use the headless package (OpenCvSharp5.official.runtime.linux-x64.headless) instead: same module set as full, highgui disabled, no GTK3/X11 dependency. If the reduced slim module set (see below) is enough, that has no GUI dependencies either.

macOS: The osx.x64 and osx.arm64 packages include FFmpeg, Tesseract, Freetype, and all standard OpenCV modules, statically linked.

Available Runtime Packages

Note: OpenCvSharp5.runtime.linux-arm has been renamed to OpenCvSharp5.runtime.linux-arm64 to correctly reflect the ARM64 (AArch64) RID. The old package is kept as a compatibility shim that automatically pulls in the renamed package, but new projects should reference OpenCvSharp5.runtime.linux-arm64 directly.

Headless Profile (Linux only)

The OpenCvSharp5.official.runtime.linux-x64.headless and OpenCvSharp5.official.runtime.linux-arm64.headless packages have the same module set as the corresponding full package (videoio, dnn, ml, contrib, stitching, barcode, ...) but highgui is disabled at build time, so it never links GTK3/X11 and needs no GUI dependency to be installed. Use it for containerized/headless services (e.g. an ASP.NET Core service using VideoCapture/imgcodecs) that need more than the slim module set below but never call highgui.

Slim Profile

The slim packages bundle a smaller native library with a reduced OpenCV module set:

Resources

• GitHub Repository
• OpenCvSharp5 (managed package)
• Documentation and API Reference
• Issue Tracker