OpenCV のサンプルプログラム（画像）

【サイト内の OpenCV 関連ページ】

OpenCV について [PDF] , [パワーポイント]
OpenCV のインストール，画像表示を行う C++ プログラムの実行手順: 別ページ »で説明
OpenCVとPythonを活用した画像・ビデオ処理プログラム: 別ページ »にまとめ
OpenCV 4 の C/C++ プログラム: 別ページ »にまとめている．

【OpenCV の公式情報】

OpenCV の公式ページ: https://opencv.org
GitHub の OpenCV のページ: https://github.com/opencv/opencv/releases

静止画像を扱うもの

GrabCut によるセグメンテーション

cd /tmp
cp /usr/share/doc/opencv-doc/examples/c/grabcut.cpp.gz .
gzip -d grabcut.cpp.gz
g++ -o a.out grabcut.cpp -I/usr/local/include/opencv -L/usr/local/lib -lopencv_highgui -lopencv_imgproc -lopencv_core
./a.out /usr/local/share/opencv/samples/c/fruits.jpg

マウスの左ボタンを使って範囲を決める．やり直したいときは r キーを押す．選んだ範囲でのセグメンテーションを行いたいときは，n キーを押す．

ヒストグラムとスライドバー

cd /tmp
cp /usr/share/doc/opencv-doc/examples/c/demhist.c .
g++ -o a.out demhist.c -I/usr/local/include/opencv -L/usr/local/lib -lopencv_highgui -lopencv_imgproc -lopencv_video -lopencv_core
./a.out /usr/local/share/opencv/samples/c/fruits.jpg

エッジ抽出

cd /tmp
cp /usr/share/doc/opencv-doc/examples/c/edge.c .
g++ -o a.out edge.c -I/usr/local/include/opencv -L/usr/local/lib -lopencv_highgui -lopencv_imgproc -lopencv_video -lopencv_core
./a.out /usr/local/share/opencv/samples/c/fruits.jpg

コンター (contour)

cd /tmp
cp /usr/share/doc/opencv-doc/examples/c/contours.c .
g++ -o a.out contours.c -I/usr/local/include/opencv -L/usr/local/lib -lopencv_highgui -lopencv_imgproc -lopencv_video -lopencv_core
./a.out

モルフォロジー演算

cd /tmp
cp /usr/share/doc/opencv-doc/examples/c/morphology.c .
g++ -o a.out morphology.c -I/usr/local/include/opencv -L/usr/local/lib -lopencv_highgui -lopencv_imgproc -lopencv_video -lopencv_core
./a.out /usr/local/share/opencv/samples/c/fruits.jpg

ハフ変換による直線の抽出

cd /tmp
cp /usr/share/doc/opencv-doc/examples/c/houghlines.c .
g++ -o a.out houghlines.c -I/usr/local/include/opencv -L/usr/local/lib -lopencv_highgui -lopencv_imgproc -lopencv_video -lopencv_core
./a.out /usr/local/share/opencv/samples/c/fruits.jpg

楕円とのフィッティング

cd /tmp
cp /usr/share/doc/opencv-doc/examples/c/fitellipse.cpp .
g++ -o a.out fitellipse.cpp -I/usr/local/include/opencv -L/usr/local/lib -lopencv_highgui -lopencv_imgproc -lopencv_video -lopencv_core
./a.out /usr/local/share/opencv/samples/c/fruits.jpg

MSER

cd /tmp
cp /usr/share/doc/opencv-doc/examples/c/mser_sample.cpp .
g++ -o a.out mser_sample.cpp -I/usr/local/include/opencv -L/usr/local/lib -lopencv_highgui -lopencv_imgproc -lopencv_video -lopencv_features2d -lopencv_core
./a.out /usr/local/share/opencv/samples/c/fruits.jpg

peopledetect

cd /tmp
cp /usr/share/doc/opencv-doc/examples/c/peopledetect.cpp .
g++ -o a.out peopledetect.cpp -I/usr/local/include/opencv -L/usr/local/lib -lopencv_highgui -lopencv_imgproc -lopencv_video -lopencv_objdetect -lopencv_core
./a.out /usr/local/share/opencv/samples/c/fruits.jpg

find_obj

cd /tmp
cp /usr/local/share/opencv/samples/c/find_obj.cpp .
cp /usr/local/share/opencv/samples/c/box* .
g++ -o a.out find_obj.cpp -I/usr/local/include/opencv -L/usr/local/lib -lopencv_highgui -lopencv_imgproc -lopencv_video -lopencv_features2d -lopencv_flann -lopencv_calib3d -lopencv_core
./a.out