ImageProcessing

OpenCVを使った画像処理プログラム集

設定

#ａ．環境変数を設定する
変数名：OpenCV
変数値：例．C:\OpenCV2.3.1\build

[Visual C++]
プロジェクトのプロパティの[構築プロパティ]にある

[VC++ ディレクトリ]で インクルード　ディレクトリ : 例．$(OpenCV)\include;
参照　ディレクトリ : 例．$(OpenCV)\x64\vc10\bin;
ライブラリ　ディレクトリ : 例．$(OpenCV)\x64\vc10\lib;
を追加する

[リンカー] - [入力]で
追加の依存ファイル：
opencv_calib3d242.lib
opencv_contrib242.lib
opencv_core242.lib
opencv_features2d242.lib
opencv_flann242.lib
opencv_gpu242.lib
opencv_haartraining_engine.lib
opencv_highgui242.lib
opencv_imgproc242.lib
opencv_legacy242.lib
opencv_ml242.lib
opencv_nonfree242.lib
opencv_objdetect242.lib
opencv_photo242.lib
opencv_stitching242.lib
opencv_ts242.lib
opencv_video242.lib
opencv_videostab242.lib

#ｂ．Pathを設定し、pragma commentを使ってlibを設定する

変数名：Path
変数値：例．C:\OpenCV2.3.1\build\x86\vc10\bin;

例．

#include <opencv2\opencv.hpp>  

#ifdef _DEBUG  
    //Debugモードの場合  
    #pragma comment(lib,"opencv_core231d.lib")  
    #pragma comment(lib,"opencv_imgproc231d.lib")  
    #pragma comment(lib,"opencv_highgui231d.lib")  
    #pragma comment(lib,"opencv_objdetect231d.lib")  
    //以下、必要に応じて追加  
    //#pragma comment(lib,"opencv_ml231d.lib")  
    //#pragma comment(lib,"opencv_features2d231d.lib")  
    //#pragma comment(lib,"opencv_video231d.lib")  
    //#pragma comment(lib,"opencv_calib3d231d.lib")  
    //#pragma comment(lib,"opencv_flann231d.lib")  
    //#pragma comment(lib,"opencv_contrib231d.lib")  
    //#pragma comment(lib,"opencv_legacy231d.lib")  
    //#pragma comment(lib,"opencv_gpu231d.lib")  
#else  
    //Releaseモードの場合  
    #pragma comment(lib,"opencv_core231.lib")  
    #pragma comment(lib,"opencv_imgproc231.lib")  
    #pragma comment(lib,"opencv_highgui231.lib")  
    #pragma comment(lib,"opencv_objdetect231.lib")  
    //以下、必要に応じて追加  
    //#pragma comment(lib,"opencv_ml231.lib")  
    //#pragma comment(lib,"opencv_features2d231.lib")  
    //#pragma comment(lib,"opencv_video231.lib")  
    //#pragma comment(lib,"opencv_calib3d231.lib")  
    //#pragma comment(lib,"opencv_flann231.lib")  
    //#pragma comment(lib,"opencv_contrib231.lib")  
    //#pragma comment(lib,"opencv_legacy231.lib")  
    //#pragma comment(lib,"opencv_gpu231.lib")  
#endif  

OpenCV-waitKey-with-cursor-key

cv::waitkeyを使いやすくした (主にenumを作成)

#include <iostream>

#include "opencv_waitkey_with_cursor_key.h"

int main(void){

  cv::Mat img = cv::imread("sample.jpg", cv::IMREAD_UNCHANGED);
  
  while(true) {

    cv::imshow("img", img);
    std::cout << 
      OpenCVWaitKeyWithCursorKey::inputToString(OpenCVWaitKeyWithCursorKey::waitKey(0))
    << std::endl;

  }

  return 0;
}

足りない所はpull request

OpenCV-Resize

画像サイズを変更する。

-バイリニア補間 bilinear -バイキュービック補間 bi_cubic -Lanczos法の補間 lanczos4

サンプルコード

#include "opencv_resize.h"

int main(void) {
  
  return 0;
}

OpenCV-PNG-image-with-Silhouette

OpenCVを使った透明度有りPNG画像作成プログラム

サンプルコード

#include "create_png_with_opencv.h"

int main(void) {

  OpenCVPNGImageWithSilhouette cpng("capture.jpg", "silhouette.jpg");
  cpng.show();
  cpng.write("dst2.png", true);
  cpng.show();

  return 0;
}

HistogramWithOpenCV

OpenCVを使ってヒストグラムを生成

サンプルコード

#include "opencv_histogram.h"

int main(void) {
  cv::Mat src = cv::imread("src.png", cv::IMREAD_UNCHANGED);
  OpenCVHistogram hist(src);
  hist.CreateHistogram();
  hist.write("dst.png");
  cv::Mat dst = hist.histogram_image();
  cv::imshow("背景ヒストグラム", dst);
  cv::waitKey(0);
  return 0;
}