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Delphi-OpenCV

Project Delphi-OpenCV. Translation of OpenCV library header files in Delphi

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README

Delphi-OpenCV

A comprehensive port of the OpenCV (Open Source Computer Vision Library) v2.4.13 to Delphi and FreePascal (FPC). This library enables object pascal developers to leverage computer vision algorithms, image/video processing tools, and FFMPEG integration directly in their applications.

🌟 Key Features

  • Direct OpenCV Bindings: Direct access to OpenCV C/C++ APIs (v2.4.13) from Delphi code.
  • FFMPEG Integration: IP camera / RTSP streaming via Delphi-FFMPEG (rtpFFMPEG, TocvFFMpegIPCamSource) on Win32 and Win64.
  • Cross-Framework UI: Components and views ready for both VCL and FireMonkey (FMX) platforms.
  • Rich Samples Collection: Ready-to-run examples demonstrating object tracking, camera captures, face detection (Haar cascades), motion detection, and OpenGL overlays.

📋 Prerequisites & Requirements

Dependency Version Description Download
OpenCV DLLs 2.4.13.6 opencv_*2413.dll / *2413d.dll (Win32) [OpenCV 2.4.13.6 release][4]
VC++ Redistributable 2015 (VC14) msvcp140.dll, vcruntime140.dll, … [Microsoft VC++ 2015 Redistributable][2]
FFmpeg DLLs see Delphi-FFMPEG Shared libs for rtpFFMPEG / IP camera (Win32 & Win64) [Delphi-FFMPEG script][7], [BtbN Win64][8], [defisym Win32][11]
SDL 1.2 & 2.0 SDL.dll, SDL2.dll for some video examples [SDL 1.2][3], [SDL2 releases][9]
JEDI submodule jedi.inc required by source/OpenCV.inc [project-jedi/jedi][10]
Delphi-FFMPEG submodule / junction Pascal FFmpeg bindings (libav*.pas) [Laex/Delphi-FFMPEG][6] — see setup below

Note: The redist/ folder contains only readme.md stubs (ffmpeg, SDL, VC14) with download links. Runtime DLLs are not included in the repository.

🔗 Delphi-FFMPEG: submodule or development junction

All projects reference Delphi-FFMPEG/source inside this repository (<PROJECT_ROOT>/Delphi-FFMPEG/).

Standard setup (GitHub clone)

bash
git clone --recurse-submodules https://github.com/Laex/Delphi-OpenCV.git
cd Delphi-OpenCV

or after a plain clone:

bash
InitDelphiFFMPEG.cmd

This initializes jedi and Delphi-FFMPEG git submodules.

Development setup (local Delphi-FFMPEG repo)

If you maintain FFmpeg bindings in a separate clone (e.g. D:\Work\Delphi\Delphi-FFMPEG), place it as a sibling of this repo or set a custom path:

text
Delphi/
├── Delphi-FFMPEG/          ← your working clone
└── OpenCV/
    └── Delphi-OpenCV/      ← this repository

Run from <PROJECT_ROOT>:

bash
InitDelphiFFMPEG.cmd

The script creates a directory junction Delphi-FFMPEG → ..\..\Delphi-FFMPEG when that folder contains source/. Projects keep using Delphi-FFMPEG/source — no path changes needed.

Custom path: copy InitDelphiFFMPEG.local.cmd.example to InitDelphiFFMPEG.local.cmd and set FFMPEG_DEV_PATH.

Manual junction:

cmd
mklink /J Delphi-FFMPEG D:\Work\Delphi\Delphi-FFMPEG

🛠️ Installation Guide

Step 1: Clone and run setup

bash
git clone https://github.com/Laex/Delphi-OpenCV.git
cd Delphi-OpenCV
InitDelphiFFMPEG.cmd

Step 2: Configure Delphi Library Paths

Add in Tools → Options → Language → Delphi → Library → Library path:

text
<PROJECT_ROOT>/source
<PROJECT_ROOT>/source/opengl
<PROJECT_ROOT>/source/sdl
<PROJECT_ROOT>/source/sdl2
<PROJECT_ROOT>/packages
<PROJECT_ROOT>/resource
<PROJECT_ROOT>/resource/facedetectxml
<PROJECT_ROOT>/jedi
<PROJECT_ROOT>/Delphi-FFMPEG/source

Note: opencv_cpp_classes is archival only. For OpenCV C++ / 5.x use Delphi-OpenCV5.

Step 3: Set up runtime DLLs

DLL group Source
OpenCV 2.4.13 [OpenCV 2.4.13.6][4]
VC++ 2015 [VC++ 2015][2]
FFmpeg [Delphi-FFMPEG download script][7]
SDL [SDL 1.2][3], [SDL2][9]

Copy DLLs next to your .exe or onto PATH.

Step 4: Verify configuration

Build and run <PROJECT_ROOT>/CheckCVDep/CheckCVDep.dproj.

Step 5: Install Delphi packages

Open packages/<your Delphi version>/ and install in order:

  1. rtpFFMPEG.dpk
  2. rclVCLOpenCV.dpk
  3. rclFMXOpenCV.dpk
  4. dclVCLOpenCV.dpk
  5. dclFMXOpenCV.dpk

📂 Directory Structure

text
<PROJECT_ROOT>
 ├── Delphi-FFMPEG       # Submodule, or junction to your dev clone
 ├── jedi                # JEDI submodule
 ├── packages            # Delphi IDE packages (D2010–D13)
 ├── samples             # Demo projects
 ├── source              # OpenCV 2.4 C API bindings
 └── opencv_cpp_classes  # Archival C++ experiment (see folder README.md)

🚀 Examples & Demos

  • samples/LibDemo/LibDemo.groupproj — basic OpenCV functions and bindings
  • samples/MultiDemo/MultiDemo.groupproj — video processing, motion detection
  • samples/VCLDemo/VCLDemo.groupproj — VCL visual wrappers
  • samples/Components/ComponentsDemo.groupproj — IDE components
  • Delphi-FFMPEG/examples/Examples.groupproj — low-level FFmpeg API samples

For OpenCV C++ / 5.x see Delphi-OpenCV5.

👥 Contributors

📄 License

This project is licensed under the Mozilla Public License Version 1.1 (MPL 1.1). See Mozilla MPL 1.1.

[2]: https://www.microsoft.com/en-us/download/details.aspx?id=48145 [3]: https://www.libsdl.org/download-1.2.php [4]: https://github.com/opencv/opencv/releases/tag/2.4.13.6 [6]: https://github.com/Laex/Delphi-FFMPEG [7]: https://github.com/Laex/Delphi-FFMPEG/blob/main/bin/download_ffmpeg_dll.ps1 [8]: https://github.com/BtbN/FFmpeg-Builds/releases [9]: https://github.com/libsdl-org/SDL/releases [10]: https://github.com/project-jedi/jedi [11]: https://github.com/defisym/FFmpeg-Builds-Win32