public Text()
{
// cvInitFont, cvPutText
// フォントを初期化して，テキストを描画する
List<FontFace> font_face = new List<FontFace>(
(FontFace[])Enum.GetValues(typeof(FontFace))
);
font_face.Remove(FontFace.Italic);
// (1)画像を確保し初期化する
using (IplImage img = Cv.CreateImage(new CvSize(450, 600), BitDepth.U8, 3))
{
Cv.Zero(img);
// (2)フォント構造体を初期化する
CvFont[] font = new CvFont[font_face.Count * 2];
for (int i = 0; i < font.Length; i += 2)
{
font[i] = new CvFont(font_face[i / 2], 1.0, 1.0);
font[i + 1] = new CvFont(font_face[i / 2] | FontFace.Italic, 1.0, 1.0);
}
// (3)フォントを指定して，テキストを描画する
for (int i = 0; i < font.Length; i++)
{
CvColor rcolor = CvColor.Random();
Cv.PutText(img, "OpenCV sample code", new CvPoint(15, (i + 1) * 30), font[i], rcolor);
}
// (4)画像の表示，キーが押されたときに終了
using (CvWindow w = new CvWindow(img))
{
CvWindow.WaitKey(0);
}
}
}
public Filter2D()
{
// cvFilter2D
// ユーザが定義したカーネルによるフィルタリング
// (1)画像の読み込み
using (IplImage srcImg = new IplImage(Const.ImageFruits, LoadMode.AnyDepth | LoadMode.AnyColor))
using (IplImage dstImg = new IplImage(srcImg.Size, srcImg.Depth, srcImg.NChannels))
{
// (2)カーネルの正規化と，フィルタ処理
float[] data = { 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
};
CvMat kernel = new CvMat(1, 21, MatrixType.F32C1, data);
Cv.Normalize(kernel, kernel, 1.0, 0, NormType.L1);
Cv.Filter2D(srcImg, dstImg, kernel, new CvPoint(0, 0));
// (3)結果を表示する
using (CvWindow window = new CvWindow("Filter2D", dstImg))
{
Cv.WaitKey(0);
}
}
}
public SaveImage()
{
using (IplImage img = new IplImage(Const.Image16bit, LoadMode.Color))
{
// JPEG quality test
img.SaveImage("q000.jpg", new JpegEncodingParam(0));
img.SaveImage("q025.jpg", new JpegEncodingParam(25));
img.SaveImage("q050.jpg", new JpegEncodingParam(50));
img.SaveImage("q075.jpg", new JpegEncodingParam(75));
img.SaveImage("q100.jpg", new JpegEncodingParam(100));
using (IplImage q000 = new IplImage("q000.jpg", LoadMode.Color))
using (IplImage q025 = new IplImage("q025.jpg", LoadMode.Color))
using (IplImage q050 = new IplImage("q050.jpg", LoadMode.Color))
using (IplImage q075 = new IplImage("q075.jpg", LoadMode.Color))
using (IplImage q100 = new IplImage("q100.jpg", LoadMode.Color))
using (CvWindow w000 = new CvWindow("quality 0", q000))
using (CvWindow w025 = new CvWindow("quality 25", q025))
using (CvWindow w050 = new CvWindow("quality 50", q050))
using (CvWindow w075 = new CvWindow("quality 75", q075))
using (CvWindow w100 = new CvWindow("quality 100", q100))
{
Cv.WaitKey();
}
}
}
public VideoWriter()
{
// (1)カメラに対するキャプチャ構造体を作成する
using (CvCapture capture = CvCapture.FromCamera(0))
{
// (2)キャプチャサイズを取得する(この設定は，利用するカメラに依存する)
int width = capture.FrameWidth;
int height = capture.FrameHeight;
double fps = 15;//capture.Fps;
// (3)ビデオライタ構造体を作成する
using (CvVideoWriter writer = new CvVideoWriter("cap.avi", FourCC.Prompt, fps, new CvSize(width, height)))
using (CvFont font = new CvFont(FontFace.HersheyComplex, 0.7, 0.7))
using (CvWindow window = new CvWindow("Capture", WindowMode.AutoSize))
{
// (4)カメラから画像をキャプチャし，ファイルに書き出す
for (int frames = 0; ; frames++)
{
IplImage frame = capture.QueryFrame();
string str = string.Format("{0}[frame]", frames);
frame.PutText(str, new CvPoint(10, 20), font, new CvColor(0, 255, 100));
writer.WriteFrame(frame);
window.ShowImage(frame);
int key = CvWindow.WaitKey((int)(1000 / fps));
if (key == '\x1b')
{
break;
}
}
}
}
}
public Snake()
{
using (IplImage src = new IplImage(Const.ImageCake, LoadMode.GrayScale))
using (IplImage dst = new IplImage(src.Size, BitDepth.U8, 3))
{
CvPoint[] contour = new CvPoint[100];
CvPoint center = new CvPoint(src.Width / 2, src.Height / 2);
for (int i = 0; i < contour.Length; i++)
{
contour[i].X = (int)(center.X * Math.Cos(2 * Math.PI * i / contour.Length) + center.X);
contour[i].Y = (int)(center.Y * Math.Sin(2 * Math.PI * i / contour.Length) + center.Y);
}
Console.WriteLine("Press any key to snake\nEsc - quit");
using (CvWindow w = new CvWindow())
{
while (true)
{
src.SnakeImage(contour, 0.45f, 0.35f, 0.2f, new CvSize(15, 15), new CvTermCriteria(1), true);
src.CvtColor(dst, ColorConversion.GrayToRgb);
for (int i = 0; i < contour.Length - 1; i++)
{
dst.Line(contour[i], contour[i + 1], new CvColor(255, 0, 0), 2);
}
dst.Line(contour[contour.Length - 1], contour[0], new CvColor(255, 0, 0), 2);
w.Image = dst;
int key = CvWindow.WaitKey();
if (key == 27)
{
break;
}
}
}
}
}
public Undistort()
{
// cvUndistort2
// キャリブレーションデータを利用して，歪みを補正する
// (1)補正対象となる画像の読み込み
using (IplImage srcImg = new IplImage(Const.ImageDistortion, LoadMode.Color))
using (IplImage dstImg = srcImg.Clone())
{
// (2)パラメータファイルの読み込み
CvMat intrinsic, distortion;
using (CvFileStorage fs = new CvFileStorage(Const.XmlCamera, null, FileStorageMode.Read))
{
CvFileNode param = fs.GetFileNodeByName(null, "intrinsic");
intrinsic = fs.Read<CvMat>(param);
param = fs.GetFileNodeByName(null, "distortion");
distortion = fs.Read<CvMat>(param);
}
// (3)歪み補正
Cv.Undistort2(srcImg, dstImg, intrinsic, distortion);
// (4)画像を表示，キーが押されたときに終了
using (CvWindow w1 = new CvWindow("Distortion", WindowMode.AutoSize, srcImg))
using (CvWindow w2 = new CvWindow("Undistortion", WindowMode.AutoSize, dstImg))
{
CvWindow.WaitKey(0);
}
intrinsic.Dispose();
distortion.Dispose();
}
}
public Contour()
{
// cvContourArea, cvArcLength
// 輪郭によって区切られた領域の面積と，輪郭の長さを求める
const int SIZE = 500;
// (1)画像を確保し初期化する
using (CvMemStorage storage = new CvMemStorage())
using (IplImage img = new IplImage(SIZE, SIZE, BitDepth.U8, 3))
{
img.Zero();
// (2)点列を生成する
CvSeq<CvPoint> points = new CvSeq<CvPoint>(SeqType.PolyLine, storage);
CvRNG rng = new CvRNG((ulong)DateTime.Now.Ticks);
double scale = rng.RandReal() + 0.5;
CvPoint pt0 = new CvPoint
{
X = (int)(Math.Cos(0) * SIZE / 4 * scale + SIZE / 2),
Y = (int)(Math.Sin(0) * SIZE / 4 * scale + SIZE / 2)
};
img.Circle(pt0, 2, CvColor.Green);
points.Push(pt0);
for (int i = 1; i < 20; i++)
{
scale = rng.RandReal() + 0.5;
CvPoint pt1 = new CvPoint
{
X = (int)(Math.Cos(i * 2 * Math.PI / 20) * SIZE / 4 * scale + SIZE / 2),
Y = (int)(Math.Sin(i * 2 * Math.PI / 20) * SIZE / 4 * scale + SIZE / 2)
};
img.Line(pt0, pt1, CvColor.Green, 2);
pt0.X = pt1.X;
pt0.Y = pt1.Y;
img.Circle(pt0, 3, CvColor.Green, Cv.FILLED);
points.Push(pt0);
}
img.Line(pt0, points.GetSeqElem(0).Value, CvColor.Green, 2);
// (3)包含矩形，面積，長さを求める
CvRect rect = points.BoundingRect(false);
double area = points.ContourArea();
double length = points.ArcLength(CvSlice.WholeSeq, 1);
// (4)結果を画像に書き込む
img.Rectangle(new CvPoint(rect.X, rect.Y), new CvPoint(rect.X + rect.Width, rect.Y + rect.Height), CvColor.Red, 2);
string text_area = string.Format("Area: wrect={0}, contour={1}", rect.Width * rect.Height, area);
string text_length = string.Format("Length: rect={0}, contour={1}", 2 * (rect.Width + rect.Height), length);
using (CvFont font = new CvFont(FontFace.HersheySimplex, 0.7, 0.7, 0, 1, LineType.AntiAlias))
{
img.PutText(text_area, new CvPoint(10, img.Height - 30), font, CvColor.White);
img.PutText(text_length, new CvPoint(10, img.Height - 10), font, CvColor.White);
}
// (5)画像を表示，キーが押されたときに終了
using (CvWindow window = new CvWindow("BoundingRect", WindowMode.AutoSize))
{
window.Image = img;
CvWindow.WaitKey(0);
}
}
}
static void showrite(String s, CvMat image)
{
CvWindow window = new CvWindow(showiteCounter.ToString() + s);
window.ShowImage(image);
image.SaveImage(showiteCounter.ToString() + s + ".png");
showiteCounter++;
}
public Watershed()
{
// cvWatershed
// マウスで円形のマーカー（シード領域）の中心を指定し，複数のマーカーを設定する．
// このマーカを画像のgradientに沿って広げて行き，gradientの高い部分に出来る境界を元に領域を分割する．
// 領域は，最初に指定したマーカーの数に分割される．
// (2)画像の読み込み，マーカー画像の初期化，結果表示用画像領域の確保を行なう
using (IplImage srcImg = new IplImage(Const.ImageGoryokaku, LoadMode.AnyDepth | LoadMode.AnyColor))
using (IplImage dstImg = srcImg.Clone())
using (IplImage dspImg = srcImg.Clone())
using (IplImage markers = new IplImage(srcImg.Size, BitDepth.S32, 1))
{
markers.Zero();
// (3)入力画像を表示しシードコンポーネント指定のためのマウスイベントを登録する
using (CvWindow wImage = new CvWindow("image", WindowMode.AutoSize))
{
wImage.Image = srcImg;
// クリックにより中心を指定し，円形のシード領域を設定する
int seedNum = 0;
wImage.OnMouseCallback += delegate(MouseEvent ev, int x, int y, MouseEvent flags)
{
if (ev == MouseEvent.LButtonDown)
{
seedNum++;
CvPoint pt = new CvPoint(x, y);
markers.Circle(pt, 20, CvScalar.ScalarAll(seedNum), Cv.FILLED, LineType.Link8, 0);
dspImg.Circle(pt, 20, CvColor.White, 3, LineType.Link8, 0);
wImage.Image = dspImg;
}
};
CvWindow.WaitKey();
}
// (4)watershed分割を実行する
Cv.Watershed(srcImg, markers);
// (5)実行結果の画像中のwatershed境界（ピクセル値=-1）を結果表示用画像上に表示する
for (int i = 0; i < markers.Height; i++)
{
for (int j = 0; j < markers.Width; j++)
{
int idx = (int)(markers.Get2D(i, j).Val0);
if (idx == -1)
{
dstImg.Set2D(i, j, CvColor.Red);
}
}
}
using (CvWindow wDst = new CvWindow("watershed transform", WindowMode.AutoSize))
{
wDst.Image = dstImg;
CvWindow.WaitKey();
}
}
}
public PixelSampling()
{
// 並進移動のためのピクセルサンプリング cvGetRectSubPix
// (1) 画像の読み込み，出力用画像領域の確保を行なう
using (IplImage srcImg = new IplImage(Const.ImageLenna, LoadMode.AnyDepth | LoadMode.AnyColor))
using (IplImage dstImg = srcImg.Clone())
{
// (2)dst_imgの画像中心になるsrc_img中の位置centerを指定する
CvPoint2D32f center = new CvPoint2D32f
{
X = srcImg.Width - 1,
Y = srcImg.Height - 1
};
// (3)centerが画像中心になるように，GetRectSubPixを用いて画像全体をシフトさせる
Cv.GetRectSubPix(srcImg, dstImg, center);
// (4)結果を表示する
using (CvWindow wSrc = new CvWindow("src"))
using (CvWindow wDst = new CvWindow("dst"))
{
wSrc.Image = srcImg;
wDst.Image = dstImg;
Cv.WaitKey(0);
}
}
// 回転移動のためのピクセルサンプリング cvGetQuadrangleSubPix
const int angle = 45;
// (1)画像の読み込み，出力用画像領域の確保を行なう
using (IplImage srcImg = new IplImage(Const.ImageLenna, LoadMode.AnyDepth | LoadMode.AnyColor))
using (IplImage dstImg = srcImg.Clone())
{
// (2)回転のための行列（アフィン行列）要素を設定し，CvMat行列Mを初期化する
float[] m = new float[6];
m[0] = (float)(Math.Cos(angle * Cv.PI / 180.0));
m[1] = (float)(-Math.Sin(angle * Cv.PI / 180.0));
m[2] = srcImg.Width * 0.5f;
m[3] = -m[1];
m[4] = m[0];
m[5] = srcImg.Height * 0.5f;
using (CvMat mat = new CvMat(2, 3, MatrixType.F32C1, m))
{
// (3)指定された回転行列により，GetQuadrangleSubPixを用いて画像全体を回転させる
Cv.GetQuadrangleSubPix(srcImg, dstImg, mat);
// (4)結果を表示する
using (CvWindow wSrc = new CvWindow("src"))
using (CvWindow wDst = new CvWindow("dst"))
{
wSrc.Image = srcImg;
wDst.Image = dstImg;
Cv.WaitKey(0);
}
}
}
}
public HOG()
{
CPP.Mat img = CPP.CvCpp.ImRead(Const.ImageAsahiyama, LoadMode.Color);
/*
if (GPU.CvGpu.IsEnabled)
{
GPU.GpuMat imgGpu = new GPU.GpuMat(img);
GPU.HOGDescriptor hog = new GPU.HOGDescriptor();
hog.SetSVMDetector(OpenCvSharp.CPlusPlus.HOGDescriptor.GetDefaultPeopleDetector());
//bool b = hog.CheckDetectorSize();
//b.ToString();
}
else
//*/
{
CPP.HOGDescriptor hog = new CPP.HOGDescriptor();
hog.SetSVMDetector(CPP.HOGDescriptor.GetDefaultPeopleDetector());
bool b = hog.CheckDetectorSize();
b.ToString();
Stopwatch watch = Stopwatch.StartNew();
// run the detector with default parameters. to get a higher hit-rate
// (and more false alarms, respectively), decrease the hitThreshold and
// groupThreshold (set groupThreshold to 0 to turn off the grouping completely).
CvRect[] found = hog.DetectMultiScale(img, 0, new CvSize(8, 8), new CvSize(24, 16), 1.05, 2);
watch.Stop();
Console.WriteLine("Detection time = {0}ms", watch.ElapsedMilliseconds);
Console.WriteLine("{0} region(s) found", found.Length);
foreach (CvRect rect in found)
{
// the HOG detector returns slightly larger rectangles than the real objects.
// so we slightly shrink the rectangles to get a nicer output.
CvRect r = new CvRect
{
X = rect.X + (int)Math.Round(rect.Width * 0.1),
Y = rect.Y + (int)Math.Round(rect.Height * 0.1),
Width = (int)Math.Round(rect.Width * 0.8),
Height = (int)Math.Round(rect.Height * 0.8)
};
img.Rectangle(r.TopLeft, r.BottomRight, CvColor.Red, 3, LineType.Link8, 0);
}
using (CvWindow window = new CvWindow("people detector", WindowMode.None, img.ToIplImage()))
{
window.SetProperty(WindowProperty.Fullscreen, 1);
Cv.WaitKey(0);
}
}
}
public CaptureCamera()
{
using (CvCapture cap = CvCapture.FromCamera(0)) // device type + camera index
using (CvWindow w = new CvWindow("SampleCapture"))
{
while (CvWindow.WaitKey(10) < 0)
{
w.Image = cap.QueryFrame();
}
}
}
private static void readImage2()
{
using (var img = new IplImage(@"..\..\images\ocv02.jpg", LoadMode.Unchanged))
{
using (var window = new CvWindow("window"))
{
window.Image = img;
Cv.WaitKey();
}
}
}
private static void readImage3()
{
// it uses `System.Drawing.Bitmap` behind the scene.
using (var img = IplImage.FromFile(@"..\..\images\ocv02.jpg", LoadMode.Unchanged))
{
using (var window = new CvWindow("window"))
{
window.Image = img;
Cv.WaitKey();
}
}
}
public PixelSampling()
{
// cvGetRectSubPix
using (IplImage srcImg = new IplImage(FilePath.Image.Lenna, LoadMode.AnyDepth | LoadMode.AnyColor))
using (IplImage dstImg = srcImg.Clone())
{
CvPoint2D32f center = new CvPoint2D32f
{
X = srcImg.Width - 1,
Y = srcImg.Height - 1
};
Cv.GetRectSubPix(srcImg, dstImg, center);
using (CvWindow wSrc = new CvWindow("src"))
using (CvWindow wDst = new CvWindow("dst"))
{
wSrc.Image = srcImg;
wDst.Image = dstImg;
Cv.WaitKey(0);
}
}
// cvGetQuadrangleSubPix
const int angle = 45;
using (IplImage srcImg = new IplImage(FilePath.Image.Lenna, LoadMode.AnyDepth | LoadMode.AnyColor))
using (IplImage dstImg = srcImg.Clone())
{
float[] m = new float[6];
m[0] = (float)(Math.Cos(angle * Cv.PI / 180.0));
m[1] = (float)(-Math.Sin(angle * Cv.PI / 180.0));
m[2] = srcImg.Width * 0.5f;
m[3] = -m[1];
m[4] = m[0];
m[5] = srcImg.Height * 0.5f;
using (CvMat mat = new CvMat(2, 3, MatrixType.F32C1, m))
{
Cv.GetQuadrangleSubPix(srcImg, dstImg, mat);
using (CvWindow wSrc = new CvWindow("src"))
using (CvWindow wDst = new CvWindow("dst"))
{
wSrc.Image = srcImg;
wDst.Image = dstImg;
Cv.WaitKey(0);
}
}
}
}
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 Watershed()
{
using (var srcImg = new IplImage(FilePath.Image.Goryokaku, LoadMode.AnyDepth | LoadMode.AnyColor))
using (var dstImg = srcImg.Clone())
using (var dspImg = srcImg.Clone())
using (var markers = new IplImage(srcImg.Size, BitDepth.S32, 1))
{
markers.Zero();
using (var window = new CvWindow("image", WindowMode.AutoSize))
{
window.Image = srcImg;
// Mouse event
int seedNum = 0;
window.OnMouseCallback += delegate(MouseEvent ev, int x, int y, MouseEvent flags)
{
if (ev == MouseEvent.LButtonDown)
{
seedNum++;
CvPoint pt = new CvPoint(x, y);
markers.Circle(pt, 20, CvScalar.ScalarAll(seedNum), Cv.FILLED, LineType.Link8, 0);
dspImg.Circle(pt, 20, CvColor.White, 3, LineType.Link8, 0);
window.Image = dspImg;
}
};
CvWindow.WaitKey();
}
Cv.Watershed(srcImg, markers);
// draws watershed
for (int i = 0; i < markers.Height; i++)
{
for (int j = 0; j < markers.Width; j++)
{
int idx = (int)(markers.Get2D(i, j).Val0);
if (idx == -1)
{
dstImg.Set2D(i, j, CvColor.Red);
}
}
}
using (CvWindow wDst = new CvWindow("watershed transform", WindowMode.AutoSize))
{
wDst.Image = dstImg;
CvWindow.WaitKey();
}
}
}
public ConvexHull()
{
using (IplImage img = Cv.CreateImage(new CvSize(500, 500), BitDepth.U8, 3))
using (CvWindow window = new CvWindow("hull"))
{
Random rand = new Random();
for (; ; )
{
int count = rand.Next() % 100 + 1;
// create sequence of random points
CvPoint[] ptseq = new CvPoint[count];
for (int i = 0; i < ptseq.Length; i++)
{
ptseq[i] = new CvPoint
{
X = rand.Next() % (img.Width / 2) + img.Width / 4,
Y = rand.Next() % (img.Height / 2) + img.Height / 4
};
}
// draw points
Cv.Zero(img);
foreach(CvPoint pt in ptseq)
{
Cv.Circle(img, pt, 2, new CvColor(255, 0, 0), -1);
}
// find hull
CvPoint[] hull;
Cv.ConvexHull2(ptseq, out hull, ConvexHullOrientation.Clockwise);
// draw hull
CvPoint pt0 = hull.Last();
foreach(CvPoint pt in hull)
{
Cv.Line(img, pt0, pt, CvColor.Green);
pt0 = pt;
}
window.ShowImage(img);
if (Cv.WaitKey(0) == 27) // 'ESC'
break;
}
}
}
public Moments()
{
// (1)画像を読み込む．3チャンネル画像の場合はCOIがセットされていなければならない
using (IplImage srcImg = new IplImage(Const.ImageLenna, LoadMode.AnyColor | LoadMode.AnyDepth))
{
if (srcImg.NChannels == 3 && srcImg.COI == 0)
{
srcImg.COI = 1;
}
// (2)入力画像の３次までの画像モーメントを計算する
CvMoments moments = new CvMoments(srcImg, false);
srcImg.COI = 0;
// (3)モーメントやHuモーメント不変量を，得られたCvMoments構造体の値を使って計算する．
double spatialMoment = moments.GetSpatialMoment(0, 0);
double centralMoment = moments.GetCentralMoment(0, 0);
double normCMoment = moments.GetNormalizedCentralMoment(0, 0);
CvHuMoments huMoments = new CvHuMoments(moments);
// (4)得られたモーメントやHuモーメント不変量を文字として画像に描画
using (CvFont font = new CvFont(FontFace.HersheySimplex, 1.0, 1.0, 0, 2, LineType.Link8))
{
string[] text = new string[10];
text[0] = string.Format("spatial={0:F3}", spatialMoment);
text[1] = string.Format("central={0:F3}", centralMoment);
text[2] = string.Format("norm={0:F3}", spatialMoment);
text[3] = string.Format("hu1={0:F10}", huMoments.Hu1);
text[4] = string.Format("hu2={0:F10}", huMoments.Hu2);
text[5] = string.Format("hu3={0:F10}", huMoments.Hu3);
text[6] = string.Format("hu4={0:F10}", huMoments.Hu4);
text[7] = string.Format("hu5={0:F10}", huMoments.Hu5);
text[8] = string.Format("hu6={0:F10}", huMoments.Hu6);
text[9] = string.Format("hu7={0:F10}", huMoments.Hu7);
CvSize textSize = font.GetTextSize(text[0]);
for (int i = 0; i < 10; i++)
{
srcImg.PutText(text[i], new CvPoint(10, (textSize.Height + 3) * (i + 1)), font, CvColor.Black);
}
}
// (5)入力画像とモーメント計算結果を表示，キーが押されたときに終了
using (CvWindow window = new CvWindow("Image", WindowMode.AutoSize))
{
window.ShowImage(srcImg);
Cv.WaitKey(0);
}
}
}
void Start () {
moveVec = new Vector3(0,0,0);
cap = CvCapture.FromCamera (0);
w = new CvWindow("Original");
IplImage frame = cap.QueryFrame ();
cols = frame.Width;
rows = frame.Height;
myTexture2D = new Texture2D(cols/2, rows/2);
prvs = new IplImage(cols, rows, BitDepth.U8, 1);
frame.CvtColor (prvs, ColorConversion.BgrToGray);
}
/// <summary>
/// 指定された名前のウィンドウを破棄する
/// </summary>
/// <param name="name">破棄するウィンドウの名前</param>
#else
/// <summary>
/// Destroys the window with a given name.
/// </summary>
/// <param name="name">Name of the window to be destroyed. </param>
#endif
public static void DestroyWindow(string name)
{
if (string.IsNullOrEmpty(name))
throw new ArgumentNullException("name");
//NativeMethods.cvDestroyWindow(name);
CvWindow window = CvWindow.GetWindowByName(name);
if (window == null)
{
NativeMethods.cvDestroyWindow(name);
}
else
{
window.Dispose();
}
}
// Use this for initialization
void Start () {
webcamTexture = new WebCamTexture(imWidth, imHeight);
rawimage.texture = webcamTexture;
rawimage.material.mainTexture = webcamTexture;
webcamTexture.Play();
// prvs = new IplImage(imWidth, imHeight, BitDepth.U8, 1);
rez = new IplImage(imWidth, imHeight, BitDepth.U8, 1);
src = new IplImage(imWidth, imHeight, BitDepth.U8, 3);
// velx = Cv.CreateMat(imWidth, imHeight, MatrixType.F32C1);
// vely = Cv.CreateMat(imWidth, imHeight, MatrixType.F32C1);
// FromTextureToIplImage(prvs);
// prvs.CvtColor(prvs, ColorConversion.RgbToGray);
w = new CvWindow("Web Camera");
}
public BoundingRect()
{
// cvBoundingRect
// 点列を包含する矩形を求める
// (1)画像とメモリストレージを確保し初期化する
// (メモリストレージは、CvSeqを使わないのであれば不要)
using (IplImage img = new IplImage(640, 480, BitDepth.U8, 3))
using (CvMemStorage storage = new CvMemStorage(0))
{
img.Zero();
CvRNG rng = new CvRNG(DateTime.Now);
// (2)点列を生成する
///*
// お手軽な方法 (普通の配列を使う)
CvPoint[] points = new CvPoint[50];
for (int i = 0; i < 50; i++)
{
points[i] = new CvPoint()
{
X = (int)(rng.RandInt() % (img.Width / 2) + img.Width / 4),
Y = (int)(rng.RandInt() % (img.Height / 2) + img.Height / 4)
};
img.Circle(points[i], 3, new CvColor(0, 255, 0), Cv.FILLED);
}
//*/
/*
// サンプルに準拠した方法 (CvSeqを使う)
CvSeq points = new CvSeq(SeqType.EltypePoint, CvSeq.SizeOf, CvPoint.SizeOf, storage);
for (int i = 0; i < 50; i++) {
CvPoint pt = new CvPoint();
pt.X = (int)(rng.RandInt() % (img.Width / 2) + img.Width / 4);
pt.Y = (int)(rng.RandInt() % (img.Height / 2) + img.Height / 4);
points.Push(pt);
img.Circle(pt, 3, new CvColor(0, 255, 0), Cv.FILLED);
}
//*/
// (3)点列を包含する矩形を求めて描画する
CvRect rect = Cv.BoundingRect(points);
img.Rectangle(new CvPoint(rect.X, rect.Y), new CvPoint(rect.X + rect.Width, rect.Y + rect.Height), new CvColor(255, 0, 0), 2);
// (4)画像の表示，キーが押されたときに終了
using (CvWindow w = new CvWindow("BoundingRect", WindowMode.AutoSize, img))
{
CvWindow.WaitKey(0);
}
}
}
public Moments()
{
using (IplImage srcImg = new IplImage(FilePath.Image.Lenna, LoadMode.AnyColor | LoadMode.AnyDepth))
{
if (srcImg.NChannels == 3 && srcImg.COI == 0)
{
srcImg.COI = 1;
}
CvMoments moments = new CvMoments(srcImg, false);
srcImg.COI = 0;
double spatialMoment = moments.GetSpatialMoment(0, 0);
double centralMoment = moments.GetCentralMoment(0, 0);
double normCMoment = moments.GetNormalizedCentralMoment(0, 0);
CvHuMoments huMoments = new CvHuMoments(moments);
// drawing
using (CvFont font = new CvFont(FontFace.HersheySimplex, 1.0, 1.0, 0, 2, LineType.Link8))
{
string[] text = new string[10];
text[0] = string.Format("spatial={0:F3}", spatialMoment);
text[1] = string.Format("central={0:F3}", centralMoment);
text[2] = string.Format("norm={0:F3}", spatialMoment);
text[3] = string.Format("hu1={0:F10}", huMoments.Hu1);
text[4] = string.Format("hu2={0:F10}", huMoments.Hu2);
text[5] = string.Format("hu3={0:F10}", huMoments.Hu3);
text[6] = string.Format("hu4={0:F10}", huMoments.Hu4);
text[7] = string.Format("hu5={0:F10}", huMoments.Hu5);
text[8] = string.Format("hu6={0:F10}", huMoments.Hu6);
text[9] = string.Format("hu7={0:F10}", huMoments.Hu7);
CvSize textSize = font.GetTextSize(text[0]);
for (int i = 0; i < 10; i++)
{
srcImg.PutText(text[i], new CvPoint(10, (textSize.Height + 3) * (i + 1)), font, CvColor.Black);
}
}
using (var window = new CvWindow("Image", WindowMode.AutoSize))
{
window.ShowImage(srcImg);
Cv.WaitKey(0);
}
}
}
/// <summary>
///
/// </summary>
public SkinDetector()
{
using (IplImage imgSrc = new IplImage(Const.ImageBalloon, LoadMode.Color))
using (IplImage imgHueMask = new IplImage(imgSrc.Size, BitDepth.U8, 1))
using (IplImage imgDst = imgSrc.Clone())
{
CvAdaptiveSkinDetector detector = new CvAdaptiveSkinDetector(1, MorphingMethod.None);
detector.Process(imgSrc, imgHueMask);
DisplaySkinPoints(imgHueMask, imgDst, CvColor.Green);
using (CvWindow windowSrc = new CvWindow("src", imgSrc))
using (CvWindow windowDst = new CvWindow("skin", imgDst))
{
Cv.WaitKey(0);
}
}
}
public PyrSegmentation()
{
// cvPyrSegmentation
// レベルを指定して画像ピラミッドを作成し，その情報を用いて画像のセグメント化を行なう．
const double threshold1 = 255.0;
const double threshold2 = 50.0;
// (1)画像の読み込み
using (IplImage srcImg = new IplImage(Const.ImageGoryokaku, LoadMode.AnyDepth | LoadMode.AnyColor))
{
// level1から4それぞれでやってみる
IplImage[] dstImg = new IplImage[4];
for (int level = 0; level < dstImg.Length; level++)
{
// (2)領域分割のためにROIをセットする
CvRect roi = new CvRect()
{
X = 0,
Y = 0,
Width = srcImg.Width & -(1 << (level + 1)),
Height = srcImg.Height & -(1 << (level + 1))
};
srcImg.ROI = roi;
// (3)分割結果画像出力用の画像領域を確保し，領域分割を実行
dstImg[level] = srcImg.Clone();
Cv.PyrSegmentation(srcImg, dstImg[level], level + 1, threshold1, threshold2);
}
// (4)入力画像と分割結果画像の表示
CvWindow wSrc = new CvWindow("src", srcImg);
CvWindow[] wDst = new CvWindow[dstImg.Length];
for (int i = 0; i < dstImg.Length; i++)
{
wDst[i] = new CvWindow("dst" + i, dstImg[i]);
}
CvWindow.WaitKey();
CvWindow.DestroyAllWindows();
foreach (IplImage item in dstImg)
{
item.Dispose();
}
}
}
public Delaunay()
{
CvRect rect = new CvRect(0, 0, 600, 600);
CvColor activeFacetColor = new CvColor(255, 0, 0);
CvColor delaunayColor = new CvColor(0, 0, 0);
CvColor voronoiColor = new CvColor(0, 180, 0);
CvColor bkgndColor = new CvColor(255, 255, 255);
Random rand = new Random();
using (CvMemStorage storage = new CvMemStorage(0))
using (IplImage img = new IplImage(rect.Size, BitDepth.U8, 3))
using (CvWindow window = new CvWindow("delaunay"))
{
img.Set(bkgndColor);
CvSubdiv2D subdiv = new CvSubdiv2D(rect, storage);
for (int i = 0; i < 200; i++)
{
CvPoint2D32f fp = new CvPoint2D32f
{
X = (float)rand.Next(5, rect.Width - 10),
Y = (float)rand.Next(5, rect.Height - 10)
};
LocatePoint(subdiv, fp, img, activeFacetColor);
window.Image = img;
if (CvWindow.WaitKey(100) >= 0)
{
break;
}
subdiv.Insert(fp);
subdiv.CalcVoronoi2D();
img.Set(bkgndColor);
DrawSubdiv(img, subdiv, delaunayColor, voronoiColor);
window.Image = img;
if (CvWindow.WaitKey(100) >= 0)
{
break;
}
}
img.Set(bkgndColor);
PaintVoronoi(subdiv, img);
window.Image = img;
CvWindow.WaitKey(0);
}
}
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 PyrMeanShiftFiltering()
{
// cvPyrMeanShiftFiltering
// 平均値シフト法による画像のセグメント化を行う
const int level = 2;
// (1)画像の読み込み
using (IplImage srcImg = new IplImage(Const.ImageGoryokaku, LoadMode.AnyDepth | LoadMode.AnyColor))
{
if (srcImg.NChannels != 3)
{
throw new Exception();
}
if (srcImg.Depth != BitDepth.U8)
{
throw new Exception();
}
// (2)領域分割のためにROIをセットする
CvRect roi = new CvRect
{
X = 0,
Y = 0,
Width = srcImg.Width & -(1 << level),
Height = srcImg.Height & -(1 << level)
};
srcImg.ROI = roi;
// (3)分割結果画像出力用の画像領域を確保し，領域分割を実行
using (IplImage dstImg = srcImg.Clone())
{
Cv.PyrMeanShiftFiltering(srcImg, dstImg, 30.0, 30.0, level, new CvTermCriteria(5, 1));
// (4)入力画像と分割結果画像の表示
using (CvWindow wSrc = new CvWindow("Source", srcImg))
using (CvWindow wDst = new CvWindow("MeanShift", dstImg))
{
CvWindow.WaitKey();
}
}
}
}
public Threshold()
{
using (IplImage src = new IplImage(Const.ImageLenna, LoadMode.Color))
using (IplImage srcGray = new IplImage(src.Size, BitDepth.U8, 1))
using (IplImage dst = new IplImage(src.Size, BitDepth.U8, 1))
using (CvWindow window = new CvWindow("SampleThreshold"))
{
src.CvtColor(srcGray, ColorConversion.BgrToGray);
srcGray.Smooth(srcGray, SmoothType.Gaussian, 5);
int threshold = 90;
window.CreateTrackbar("threshold", threshold, 255, delegate(int pos)
{
srcGray.Threshold(dst, pos, 255, ThresholdType.Binary);
window.Image = dst;
});
srcGray.Threshold(dst, threshold, 255, ThresholdType.Binary);
window.Image = dst;
CvWindow.WaitKey();
}
}
public BgSubtractorMOG()
{
using (CvCapture capture = new CvCapture(Const.MovieHara)) // specify your movie file
using (BackgroundSubtractorMOG mog = new BackgroundSubtractorMOG())
using (CvWindow windowSrc = new CvWindow("src"))
using (CvWindow windowDst = new CvWindow("dst"))
{
IplImage imgFrame;
using (Mat imgFg = new Mat())
while ((imgFrame = capture.QueryFrame()) != null)
{
mog.Run(new Mat(imgFrame, false), imgFg, 0.01);
windowSrc.Image = imgFrame;
windowDst.Image = imgFg.ToIplImage();
Cv.WaitKey(50);
}
}
}
/// <summary>
/// 全ての HighGUI ウィンドウを破棄する
/// </summary>
#else
/// <summary>
/// Destroys all the opened HighGUI windows.
/// </summary>
#endif
public static void DestroyAllWindows()
{
foreach (KeyValuePair <string, CvWindow> wpair in Windows)
{
CvWindow w = wpair.Value;
if (w == null || w.IsDisposed)
{
continue;
}
NativeMethods.cvDestroyWindow(w.name);
foreach (KeyValuePair <string, CvTrackbar> tpair in w.trackbars)
{
if (tpair.Value != null)
{
tpair.Value.Dispose();
}
}
//w.Dispose();
}
Windows.Clear();
NativeMethods.cvDestroyAllWindows();
}
/// <summary>
/// オープンされている全ての HighGUI ウィンドウを破棄する
/// </summary>
#else
/// <summary>
/// Destroys all the opened HighGUI windows.
/// </summary>
#endif
public static void DestroyAllWindows()
{
//OpenCV.cvDestroyAllWindows();
CvWindow.DestroyAllWindows();
}
