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 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 FitLine()
{
CvSize imageSize = new CvSize(500, 500);
// cvFitLine
CvPoint2D32f[] points = GetRandomPoints(20, imageSize);
CvLine2D line = Cv.FitLine2D(points, DistanceType.L2, 0, 0.01, 0.01);
using (IplImage img = new IplImage(imageSize, BitDepth.U8, 3))
{
img.Zero();
// draw line
{
CvPoint pt1, pt2;
line.FitSize(img.Width, img.Height, out pt1, out pt2);
img.Line(pt1, pt2, CvColor.Green, 1, LineType.Link8);
}
// draw points and distances
using (CvFont font = new CvFont(FontFace.HersheySimplex, 0.33, 0.33))
{
foreach (CvPoint2D32f p in points)
{
double d = line.Distance(p);
img.Circle(p, 2, CvColor.White, -1, LineType.AntiAlias);
img.PutText(string.Format("{0:F1}", d), new CvPoint((int) (p.X + 3), (int) (p.Y + 3)), font, CvColor.Green);
}
}
CvWindow.ShowImages(img);
}
}
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);
}
}
}
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);
}
}
}
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>
/// 画像上にテキストを描画します．
/// </summary>
/// <param name="img">文字列描画の対象となる画像．</param>
/// <param name="text">画像上に描画されるテキスト．</param>
/// <param name="location">画像上のテキストの開始位置 Point(x,y)．</param>
/// <param name="font">テキストを描画するのに利用されるフォント．</param>
#else
/// <summary>
/// Create the font to be used to draw text on an image
/// </summary>
/// <param name="img">Image where the text should be drawn</param>
/// <param name="text">Text to write on the image</param>
/// <param name="location">Point(x,y) where the text should start on the image</param>
/// <param name="font">Font to use to draw the text</param>
#endif
public static void AddText(CvArr img, string text, CvPoint location, CvFont font)
{
if (img == null)
{
throw new ArgumentNullException("img");
}
if (text == null)
{
throw new ArgumentNullException("text");
}
if (font == null)
{
throw new ArgumentNullException("font");
}
NativeMethods.cvAddText(img.CvPtr, text, location, font.CvPtr);
}
/// <summary>
/// 画像上にテキストを描画します．
/// </summary>
/// <param name="img">文字列描画の対象となる画像．</param>
/// <param name="text">画像上に描画されるテキスト．</param>
/// <param name="location">画像上のテキストの開始位置 Point(x,y)．</param>
/// <param name="font">テキストを描画するのに利用されるフォント．</param>
#else
/// <summary>
/// Create the font to be used to draw text on an image
/// </summary>
/// <param name="img">Image where the text should be drawn</param>
/// <param name="text">Text to write on the image</param>
/// <param name="location">Point(x,y) where the text should start on the image</param>
/// <param name="font">Font to use to draw the text</param>
#endif
public static void AddText(CvArr img, string text, CvPoint location, CvFont font)
{
if (img == null)
{
throw new ArgumentNullException(nameof(img));
}
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
if (font == null)
{
throw new ArgumentNullException(nameof(font));
}
NativeMethods.cvAddText(img.CvPtr, text, location, font.CvPtr);
GC.KeepAlive(img);
GC.KeepAlive(font);
}
void RenderTracks(IplImage imgDest)
{
foreach (Trak track in tracks)
{
CvFont font = new CvFont(FontFace.HersheyDuplex, 0.5, 0.5, 0, 1);
if (track.Inactive == 0)
{
Cv.PutText(imgDest, track.Label.ToString(), track.Centroid, font, CvColor.Green);
}
if (track.Inactive > 0)
Cv.Rectangle(
imgDest,
new CvPoint(track.MinX, track.MinY),
new CvPoint(track.MaxX - 1, track.MaxY - 1),
new CvColor(0, 0, 50));
else
Cv.Rectangle(
imgDest,
new CvPoint(track.MinX, track.MinY),
new CvPoint(track.MaxX - 1, track.MaxY - 1),
new CvColor(0, 0, 255));
}
}
/// <summary>
/// 指定した分割数でそろばんを全て読み取る
/// </summary>
/// <param name="source">そろばんの画像</param>
/// <param name="threshold">しきい値</param>
/// <param name="process_img">処理画像</param>
/// <returns>読み取った数値(-1はエラー)</returns>
public int[] AllMatching(IplImage source, double threshold, out IplImage process_img)
{
// グレースケール画像
IplImage cap_gray = new IplImage(PROCESS_SIZE, BitDepth.U8, 1);
// キャプチャとリサイズ，グレースケール変換
using (IplImage tmp = new IplImage(
PROCESS_SIZE, source.Depth, source.NChannels))
{
source.Resize(tmp);
tmp.CvtColor(cap_gray, ColorConversion.BgrToGray);
}
int[] results = new int[DIVIDE_NUM];
int width = cap_gray.Width / (DIVIDE_NUM + 1);
int margin = (int)(width * DIVIDE_MARGIN);
// 領域ごとに処理
Parallel.For(0, DIVIDE_NUM, i =>
{
IplImage tmp = new IplImage(PROCESS_SIZE, BitDepth.U8, 1);
cap_gray.Copy(tmp);
int x = (i + 1) * width - width / 2;
// 領域を指定
CvRect rect = new CvRect(x - margin, 0, width + margin * 2, PROCESS_SIZE.Height);
tmp.SetROI(rect);
// 0-9の画像とMatchTemplateし一番高い値を得る
results[i] = bestMatchNum(tmp, this.templates[i], threshold);
// 領域の指定を解除
tmp.ResetROI();
});
// 分割線の描画
for (int i = 1; i < DIVIDE_NUM + 2; i++)
{
int x = i * width - width / 2;
cap_gray.Line(x, 0, x, PROCESS_SIZE.Height, CvColor.White);
}
// 読み取り数値を表示
CvFont font = new CvFont(FontFace.HersheyDuplex, 1.0, 1.0);
for (int i = 0; i < DIVIDE_NUM; i++)
{
if (results[i] != -1)
{
int x = i * width + width / 2;
cap_gray.PutText(results[i].ToString(), new CvPoint(x, 30),
font, CvColor.White);
}
}
// 分割線, 読み取り数値画像を返す
process_img = cap_gray;
return results;
}
/// <summary>
/// 画像上にテキストを描画します．
/// </summary>
/// <param name="img">文字列描画の対象となる画像．</param>
/// <param name="text">画像上に描画されるテキスト．</param>
/// <param name="location">画像上のテキストの開始位置 Point(x,y)．</param>
/// <param name="font">テキストを描画するのに利用されるフォント．</param>
#else
/// <summary>
/// Create the font to be used to draw text on an image
/// </summary>
/// <param name="img">Image where the text should be drawn</param>
/// <param name="text">Text to write on the image</param>
/// <param name="location">Point(x,y) where the text should start on the image</param>
/// <param name="font">Font to use to draw the text</param>
#endif
public static void AddText(CvArr img, string text, CvPoint location, CvFont font)
{
if (img == null)
throw new ArgumentNullException("img");
if (text == null)
throw new ArgumentNullException("text");
if (font == null)
throw new ArgumentNullException("font");
NativeMethods.cvAddText(img.CvPtr, text, location, font.CvPtr);
}
void debug描画(ref IplImage src)
{
string[] debug = Tobii.debug.Split('\n');
CvFont フォント = new CvFont(FontFace.HersheyComplex, 0.5, 0.5);
Cv.PutText(src, debug[0], new CvPoint(10, 20), フォント, new CvColor(255, 255, 255));
Cv.PutText(src, debug[1], new CvPoint(10, 40), フォント, new CvColor(255, 255, 255));
Cv.PutText(src, debug[2], new CvPoint(10, 60), フォント, new CvColor(255, 255, 255));
}
/// <summary>
/// Classical Multidimensional Scaling
/// </summary>
public MDS()
{
// creates distance matrix
int size = CityDistance.GetLength(0);
CvMat t = new CvMat(size, size, MatrixType.F64C1, CityDistance);
// adds Torgerson's additive constant to t
t += Torgerson(t);
// squares all elements of t
t.Mul(t, t);
// centering matrix G
CvMat g = CenteringMatrix(size);
// calculates inner product matrix B
CvMat b = g * t * g.T() * -0.5;
// calculates eigenvalues and eigenvectors of B
CvMat vectors = new CvMat(size, size, MatrixType.F64C1);
CvMat values = new CvMat(size, 1, MatrixType.F64C1);
Cv.EigenVV(b, vectors, values);
for (int r = 0; r < values.Rows; r++)
{
if (values[r] < 0)
values[r] = 0;
}
// multiplies sqrt(eigenvalue) by eigenvector
CvMat result = vectors.GetRows(0, 2);
for (int r = 0; r < result.Rows; r++)
{
for (int c = 0; c < result.Cols; c++)
{
result[r, c] *= Math.Sqrt(values[r]);
}
}
// scaling
Cv.Normalize(result, result, 0, 800, NormType.MinMax);
//Console.WriteLine(vectors);
//Console.WriteLine(values);
//Console.WriteLine(result);
// opens a window
using (IplImage img = new IplImage(800, 600, BitDepth.U8, 3))
using (CvFont font = new CvFont(FontFace.HersheySimplex, 0.5f, 0.5f))
using (CvWindow window = new CvWindow("City Location Estimation"))
{
img.Zero();
for (int c = 0; c < size; c++)
{
double x = result[0, c];
double y = result[1, c];
x = x * 0.7 + img.Width * 0.1;
y = y * 0.7 + img.Height * 0.1;
img.Circle((int)x, (int)y, 5, CvColor.Red, -1);
img.PutText(CityNames[c], new CvPoint((int)x+5, (int)y+10), font, CvColor.White);
}
window.Image = img;
Cv.WaitKey();
}
}
static void Main(string[] args)
{
// CreateCameraCaptureの引数はカメラのIndex(通常は0から始まる)
using (var capture = Cv.CreateCameraCapture(0))
{
Console.WriteLine("Hit any key to quit");
/*
double fps=12.0;
int interval=1;
double zoom=1.0;
string OutputFile;
*/
double fps ;
int interval ;
double zoom=1.0 ;
string OutputFile;
var opts = new Options();
bool isSuccess = CommandLine.Parser.Default.ParseArguments(args, opts);
if(!isSuccess)
{
opts.GetUsage();
Console.WriteLine(Environment.GetCommandLineArgs()[0] + " -o Outputfilename(string) -f fps(double) -i CaptureInterval(int)");
Environment.Exit(0);
}
fps = opts.fps;
interval = opts.interval;
zoom = opts.zoom;
OutputFile = opts.OutputFile;
Console.WriteLine(OutputFile);
if (fps > 30 | interval < 0.1)
{
Console.WriteLine(" :-p");
Environment.Exit(1);
}
Int32 codec = 0; // コーデック(AVI)
IplImage frame = new IplImage();
/*
double width = capture.FrameWidth/2;
double height = capture.FrameHeight/2;
//double width = 640, height = 240;
Cv.SetCaptureProperty(capture, CaptureProperty.FrameWidth, width);
Cv.SetCaptureProperty(capture, CaptureProperty.FrameHeight, height);
CvSize size = new CvSize((int)width, (int)height);
CvVideoWriter vw = new CvVideoWriter(OutputFile, codec, fps, size, true);
*/
int width = (int)(Cv.GetCaptureProperty(capture, CaptureProperty.FrameWidth)*zoom);
int height = (int)(Cv.GetCaptureProperty(capture, CaptureProperty.FrameHeight)*zoom);
//Cv.SetCaptureProperty(capture, CaptureProperty.FrameWidth, width);
//Cv.SetCaptureProperty(capture, CaptureProperty.FrameWidth, height);
//Bitmap bitmap = new Bitmap(width, height);
CvSize size = new CvSize(width, height);
CvVideoWriter vw = new CvVideoWriter(OutputFile, codec, fps, size, true);
//CvFont font = new CvFont(FontFace.HersheyTriplex, 0.7, 0.7);
//(FontFace.HersheyPlain, 1.0, 1.0, 0, 2);
double fontSize;
if(width>600)
fontSize=1.0;
else
fontSize=0.5;
CvFont font = new CvFont(FontFace.HersheyPlain,fontSize,fontSize);
// 何かキーを押すまでは、Webカメラの画像を表示し続ける
while (Cv.WaitKey(1) == -1)
{
System.Threading.Thread.Sleep(1000*interval);
// カメラからフレームを取得
frame = Cv.QueryFrame(capture);
string str = DateTime.Now.ToString();
// Window「Capture」を作って、Webカメラの画像を表示
if (frame != null)
{
frame.PutText(str, new CvPoint(10, 20), font, new CvColor(200,100,50));
Cv.ShowImage("Timelapse", frame);
//frame.SaveImage("result.bmp");
//bitmap = BitmapConverter.ToBitmap(frame);
//OpenCvSharp.IplImage ipl2 = (OpenCvSharp.IplImage)BitmapConverter.ToIplImage(bitmap);
vw.WriteFrame(frame);
// vw.WriteFrame(ipl2);
frame.Dispose();
}
}
Cv.DestroyWindow("Capture");
vw.Dispose();
}
}
/// <summary>
/// Video writer
/// </summary>
/// <param name="frame"></param>
/// <param name="frames"></param>
public void VideoWriter(IplImage frame, int frames)
{
CvFont font = new CvFont(FontFace.HersheyComplex, 0.5, 0.5);
string str = string.Format("{0}[Frame]", frames);
frame.PutText(str, new CvPoint(10, 20), font, new CvColor(255, 0, 0));
this.writer.WriteFrame(frame);
}