/// <summary>
/// ウィンドウにトラックバーを作成し、作成したトラックバーを返す
/// </summary>
/// <param name="name">トラックバーの名前</param>
/// <param name="value">スライダの初期位置</param>
/// <param name="max">スライダの最大値．最小値は常に 0.</param>
/// <param name="callback">スライダの位置が変更されるたびに呼び出されるデリゲート</param>
/// <param name="userdata"></param>
#else
/// <summary>
/// Creates the trackbar and attaches it to this window
/// </summary>
/// <param name="name">Name of created trackbar. </param>
/// <param name="value">The position of the slider</param>
/// <param name="max">Maximal position of the slider. Minimal position is always 0. </param>
/// <param name="callback">the function to be called every time the slider changes the position. This function should be prototyped as void Foo(int);</param>
/// <param name="userdata"></param>
/// <returns></returns>
#endif
public CvTrackbar CreateTrackbar2(string name, int value, int max, CvTrackbarCallback2 callback, object userdata)
{
CvTrackbar trackbar = new CvTrackbar(name, this.name, value, max, callback, userdata);
trackbars.Add(name, trackbar);
return(trackbar);
}
/// <summary>
/// ウィンドウにトラックバーを作成し、作成したトラックバーを返す
/// </summary>
/// <param name="name">トラックバーの名前</param>
/// <param name="value">スライダの初期位置</param>
/// <param name="max">スライダの最大値．最小値は常に 0.</param>
/// <param name="callback">スライダの位置が変更されるたびに呼び出されるデリゲート</param>
#else
/// <summary>
/// Creates the trackbar and attaches it to this window
/// </summary>
/// <param name="name">Name of created trackbar. </param>
/// <param name="value">The position of the slider</param>
/// <param name="max">Maximal position of the slider. Minimal position is always 0. </param>
/// <param name="callback">the function to be called every time the slider changes the position. This function should be prototyped as void Foo(int);</param>
/// <returns></returns>
#endif
public CvTrackbar CreateTrackbar(string name, int value, int max, CvTrackbarCallback callback)
{
CvTrackbar trackbar = new CvTrackbar(name, this.name, value, max, callback);
trackbars.Add(name, trackbar);
return(trackbar);
}
private void InitializeCv()
{
CvWindow objectSeg = new CvWindow("Thresholded View");
CvWindow colorPick = new CvWindow("Color Picker");
CvTrackbarCallback lowerHCallback = delegate(int pos)
{
if (this.upperH > pos)
{
this.lowerH = pos;
}
};
CvTrackbarCallback upperHCallback = delegate(int pos)
{
if (pos > this.lowerH)
{
this.upperH = pos;
}
};
CvTrackbarCallback lowerSCallback = delegate(int pos)
{
if (this.upperS > pos)
{
this.lowerS = pos;
}
};
CvTrackbarCallback upperSCallback = delegate(int pos)
{
if (pos > this.lowerS)
{
this.upperS = pos;
}
};
CvTrackbarCallback lowerVCallback = delegate(int pos)
{
if (this.upperV > pos)
{
this.lowerV = pos;
}
};
CvTrackbarCallback upperVCallback = delegate(int pos)
{
if (pos > this.lowerV)
{
this.upperV = pos;
}
};
CvTrackbar lowerH = colorPick.CreateTrackbar("lower H", this.lowerH, 179, lowerHCallback);
CvTrackbar upperH = colorPick.CreateTrackbar("upper H", this.upperH, 179, upperHCallback);
CvTrackbar lowerS = colorPick.CreateTrackbar("lower S", this.lowerS, 255, lowerSCallback);
CvTrackbar upperS = colorPick.CreateTrackbar("upper S", this.upperS, 255, upperSCallback);
CvTrackbar lowerV = colorPick.CreateTrackbar("lower V", this.lowerV, 255, lowerVCallback);
CvTrackbar upperV = colorPick.CreateTrackbar("upper V", this.upperV, 255, upperVCallback);
}
public Histogram()
{
// cvCalcHist
// コントラストや明度をいろいろ変えられるサンプル
const int histSize = 64;
float[] range0 = { 0, 256 };
float[][] ranges = { range0 };
// 画像の読み込み
using (IplImage srcImg = new IplImage(Const.ImageLenna, LoadMode.GrayScale))
using (IplImage dstImg = srcImg.Clone())
using (IplImage histImg = new IplImage(new CvSize(400, 400), BitDepth.U8, 1))
using (CvHistogram hist = new CvHistogram(new int[] { histSize }, HistogramFormat.Array, ranges, true))
{
using (CvWindow windowImage = new CvWindow("image", WindowMode.AutoSize))
using (CvWindow windowHist = new CvWindow("histogram", WindowMode.AutoSize))
{
// トラックバーが動かされた時の処理
CvTrackbar ctBrightness = null;
CvTrackbar ctContrast = null;
CvTrackbarCallback callback = delegate(int pos)
{
int brightness = ctBrightness.Pos - 100;
int contrast = ctContrast.Pos - 100;
// LUTの適用
byte[] lut = CalcLut(contrast, brightness);
srcImg.LUT(dstImg, lut);
// ヒストグラムの描画
CalcHist(dstImg, hist);
DrawHist(histImg, hist, histSize);
// ウィンドウに表示
windowImage.ShowImage(dstImg);
windowHist.ShowImage(histImg);
dstImg.Zero();
histImg.Zero();
};
// トラックバーの作成
// (OpenCVでは現在位置にポインタを渡すことでトラックバーの位置の変化が取得できるが、
// .NETではGCによりポインタが移動してしまうので廃止した。別の方法でうまく取得すべし。)
ctBrightness = windowImage.CreateTrackbar("brightness", 100, 200, callback);
ctContrast = windowImage.CreateTrackbar("contrast", 100, 200, callback);
// 初回描画
callback(0);
// キー入力待ち
Cv.WaitKey(0);
}
}
}
public IplImage BuildHist(IplImage src_tmp)
{
const int histSize = 64;
float[] range0 = { 0, 256 };
float[][] ranges = { range0 };
// 화상의 읽기
using (IplImage srcImg = new IplImage(src_tmp.Size, BitDepth.U8, 1))
using (IplImage dstImg = new IplImage(src_tmp.Size, BitDepth.U8, 1))
using (IplImage histImg = new IplImage(new CvSize(400, 400), BitDepth.U8, 1))
using (CvHistogram hist = new CvHistogram(new int[] { histSize }, HistogramFormat.Array, ranges, true))
{
src_tmp.CvtColor(srcImg, ColorConversion.BgrToGray);
srcImg.Copy(dstImg);
using (CvWindow windowImage = new CvWindow("변환된 이미지", WindowMode.AutoSize))
using (CvWindow windowHist = new CvWindow("히스토그램", WindowMode.AutoSize))
{
// 트랙바가 동작되었을 때의 처리
CvTrackbar ctBrightness = null;
CvTrackbar ctContrast = null;
CvTrackbarCallback callback = delegate(int pos)
{
int brightness = ctBrightness.Pos - 100;
int contrast = ctContrast.Pos - 100;
// LUT의 적용
byte[] lut = CalcLut(contrast, brightness);
srcImg.LUT(dstImg, lut);
// 히스토그램 그리기
CalcHist(dstImg, hist);
DrawHist(histImg, hist, histSize);
// 윈도우에 표시
DstHist = histImg.Clone();
windowImage.ShowImage(dstImg);
windowHist.ShowImage(histImg);
dstImg.Zero();
histImg.Zero();
};
// 트랙바의 작성
ctBrightness = windowImage.CreateTrackbar("명도", 100, 200, callback);
ctContrast = windowImage.CreateTrackbar("대조", 100, 200, callback);
// 첫회 그리기
callback(0);
// 키 입력대기
Cv.WaitKey(0);
}
return(DstHist);
}
}
public Histogram()
{
// cvCalcHist
const int histSize = 64;
float[] range0 = { 0, 256 };
float[][] ranges = { range0 };
using (IplImage srcImg = new IplImage(FilePath.Image.Lenna, LoadMode.GrayScale))
using (IplImage dstImg = srcImg.Clone())
using (IplImage histImg = new IplImage(new CvSize(400, 400), BitDepth.U8, 1))
using (CvHistogram hist = new CvHistogram(new int[] { histSize }, HistogramFormat.Array, ranges, true))
{
using (CvWindow windowImage = new CvWindow("image", WindowMode.AutoSize))
using (CvWindow windowHist = new CvWindow("histogram", WindowMode.AutoSize))
{
CvTrackbar ctBrightness = null;
CvTrackbar ctContrast = null;
CvTrackbarCallback callback = delegate(int pos)
{
int brightness = ctBrightness.Pos - 100;
int contrast = ctContrast.Pos - 100;
// perform LUT
byte[] lut = CalcLut(contrast, brightness);
srcImg.LUT(dstImg, lut);
// draws histogram
CalcHist(dstImg, hist);
DrawHist(histImg, hist, histSize);
windowImage.ShowImage(dstImg);
windowHist.ShowImage(histImg);
dstImg.Zero();
histImg.Zero();
};
ctBrightness = windowImage.CreateTrackbar("brightness", 100, 200, callback);
ctContrast = windowImage.CreateTrackbar("contrast", 100, 200, callback);
// initial action
callback(0);
Cv.WaitKey(0);
}
}
}
public Mat Crop()
{
using (CroppingWindow = new OpenCvSharp.Window("Cropper", WindowMode.FullScreen, srcImage))
{
CvMouseCallback onMouse = new CvMouseCallback(mouseCallback);
CroppingWindow.SetMouseCallback(onMouse);
CvTrackbarCallback2 onZoom = new CvTrackbarCallback2(trackbarCallback);
CvTrackbar zoom = CroppingWindow.CreateTrackbar2("Zoom", 100, 200, onZoom, null);
Cv2.WaitKey();
// This line is very important
// OpenCV is written in C++, which means it's unmanaged.
// So when a delegate callback variable is passed to it as a function point,
// GC in C# can no longer identify the life cycle of this delegate variable
// It's our reponsebility to make sure GC in C# will not collect it when it's still in use.
// Otherwise an exception will be thrown.
GC.KeepAlive(onMouse);
}
// seems that srcImage will be released by GC, so I must return a copy of it
return(srcImage.Clone());
}
/// <summary>
/// ウィンドウにトラックバーを作成し、作成したトラックバーを返す
/// </summary>
/// <param name="name">トラックバーの名前</param>
/// <param name="value">スライダの初期位置</param>
/// <param name="max">スライダの最大値．最小値は常に 0.</param>
/// <param name="callback">スライダの位置が変更されるたびに呼び出されるデリゲート</param>
/// <param name="userdata"></param>
#else
/// <summary>
/// Creates the trackbar and attaches it to this window
/// </summary>
/// <param name="name">Name of created trackbar. </param>
/// <param name="value">The position of the slider</param>
/// <param name="max">Maximal position of the slider. Minimal position is always 0. </param>
/// <param name="callback">the function to be called every time the slider changes the position. This function should be prototyped as void Foo(int);</param>
/// <param name="userdata"></param>
/// <returns></returns>
#endif
public CvTrackbar CreateTrackbar2(string name, int value, int max, CvTrackbarCallback2 callback, object userdata)
{
CvTrackbar trackbar = new CvTrackbar(name, this.name, value, max, callback, userdata);
trackbars.Add(name, trackbar);
return trackbar;
}
/// <summary>
/// ウィンドウにトラックバーを作成し、作成したトラックバーを返す
/// </summary>
/// <param name="name">トラックバーの名前</param>
/// <param name="value">スライダの初期位置</param>
/// <param name="max">スライダの最大値．最小値は常に 0.</param>
/// <param name="callback">スライダの位置が変更されるたびに呼び出されるデリゲート</param>
#else
/// <summary>
/// Creates the trackbar and attaches it to this window
/// </summary>
/// <param name="name">Name of created trackbar. </param>
/// <param name="value">The position of the slider</param>
/// <param name="max">Maximal position of the slider. Minimal position is always 0. </param>
/// <param name="callback">the function to be called every time the slider changes the position. This function should be prototyped as void Foo(int);</param>
/// <returns></returns>
#endif
public CvTrackbar CreateTrackbar(string name, int value, int max, CvTrackbarCallback callback)
{
CvTrackbar trackbar = new CvTrackbar(name, this.name, value, max, callback);
trackbars.Add(name, trackbar);
return trackbar;
}
