Add rollingsum filter for frame analysis based on column mean deviation

- Implements GStreamer element that analyzes pixel columns
- Drops frames when column mean deviates from rolling baseline
- Configurable window size, column index, stride, and threshold
- Includes design documentation and build script
- Tested successfully with IDS uEye camera source

build_idsueye_and_rollingsum.bat

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+@echo off
+REM Script to build IDS uEye and Rolling Sum plugins
+
+echo ========================================
+echo Building IDS uEye and Rolling Sum Plugins
+echo ========================================
+echo.
+
+REM Set default GStreamer path (can be overridden by environment variable or command line)
+set DEFAULT_GSTREAMER_ROOT=C:\bin\gstreamer\1.0\msvc_x86_64
+
+REM Allow override via command line parameter
+if not "%~1"=="" (
+    set GSTREAMER_ROOT=%~1
+    echo Using GStreamer from command line: %GSTREAMER_ROOT%
+) else if defined GSTREAMER_ROOT (
+    echo Using GStreamer from environment: %GSTREAMER_ROOT%
+) else (
+    set GSTREAMER_ROOT=%DEFAULT_GSTREAMER_ROOT%
+    echo Using default GStreamer location: %GSTREAMER_ROOT%
+)
+
+REM Verify GStreamer directory exists
+if not exist "%GSTREAMER_ROOT%" (
+    echo ERROR: GStreamer directory does not exist: %GSTREAMER_ROOT%
+    echo.
+    echo Please provide correct GStreamer path:
+    echo   build_idsueye_and_rollingsum.bat "C:\path\to\gstreamer"
+    echo.
+    exit /b 1
+)
+
+echo.
+
+REM Create build directory
+if not exist build (
+    mkdir build
+    echo Created build directory: build
+) else (
+    echo Using existing build directory: build
+)
+
+echo.
+
+cd build
+
+REM Configure CMake
+echo Configuring CMake...
+echo.
+cmake .. -G "Visual Studio 16 2019" -A x64 ^
+    -DGSTREAMER_ROOT="%GSTREAMER_ROOT%" ^
+    -DCMAKE_PREFIX_PATH="%GSTREAMER_ROOT%"
+
+if %ERRORLEVEL% NEQ 0 (
+    echo.
+    echo ========================================
+    echo CMake configuration failed!
+    echo ========================================
+    echo.
+    echo Common issues:
+    echo 1. GStreamer not properly installed at: %GSTREAMER_ROOT%
+    echo 2. IDS uEye SDK not found (default: C:\Program Files\IDS\uEye\Develop)
+    echo 3. Missing GStreamer development files
+    echo.
+    echo To specify custom IDS uEye SDK location:
+    echo   set IDSUEYE_DIR=C:\path\to\ueye\sdk
+    echo   build_idsueye_and_rollingsum.bat
+    echo.
+    cd ..
+    exit /b 1
+)
+
+REM Build the plugins
+echo.
+echo Building plugins...
+echo.
+cmake --build . --config Release
+
+if %ERRORLEVEL% NEQ 0 (
+    echo.
+    echo ========================================
+    echo Build failed!
+    echo ========================================
+    cd ..
+    exit /b 1
+)
+
+REM Install the plugins
+echo.
+echo Installing plugins to GStreamer directory...
+echo.
+cmake --build . --config Release --target install
+
+if %ERRORLEVEL% NEQ 0 (
+    echo.
+    echo ========================================
+    echo Installation failed!
+    echo ========================================
+    echo.
+    echo You may need administrator privileges to install.
+    echo Try running this script as administrator.
+    echo.
+    cd ..
+    exit /b 1
+)
+
+echo.
+echo ========================================
+echo Build and installation completed successfully!
+echo ========================================
+echo.
+echo Installed plugins:
+echo   - libgstidsueye.dll (IDS uEye camera source)
+echo   - libgstrollingsum.dll (Rolling sum filter)
+echo.
+echo Installation location: %GSTREAMER_ROOT%\lib\gstreamer-1.0\
+echo.
+echo Verify installation with:
+echo   gst-inspect-1.0 idsueyesrc
+echo   gst-inspect-1.0 rollingsum
+echo.
+echo Example pipeline:
+echo   gst-launch-1.0 idsueyesrc config-file=config.ini ! rollingsum window-size=1000 column-index=1 threshold=0.5 ! autovideosink
+echo.
+
+cd ..