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);
}
}
}
/// <summary>
/// Extracts MSER by C++-style code (cv::MSER)
/// </summary>
/// <param name="gray"></param>
/// <param name="dst"></param>
private void CppStyleMSER(Mat gray, Mat dst)
{
MSER mser = new MSER();
Point[][] contours = mser.Run(gray, null); // operator()
foreach (Point[] pts in contours)
{
CvColor color = CvColor.Random();
foreach (Point p in pts)
{
dst.Circle(p, 1, color);
}
}
}
/// <summary>
/// Extracts MSER by C-style code (cvExtractMSER)
/// </summary>
/// <param name="imgGray"></param>
/// <param name="imgDst"></param>
private void CStyleMSER(IplImage imgGray, IplImage imgDst)
{
using (CvMemStorage storage = new CvMemStorage())
{
CvContour[] contours;
CvMSERParams param = new CvMSERParams();
Cv.ExtractMSER(imgGray, null, out contours, storage, param);
foreach (CvContour c in contours)
{
CvColor color = CvColor.Random();
for (int i = 0; i < c.Total; i++)
{
imgDst.Circle(c[i].Value, 1, color);
}
}
}
}
/// <summary>
///
/// </summary>
/// <param name="img"></param>
/// <param name="edge"></param>
private void DrawSubdivFacet(IplImage img, CvSubdiv2DEdge edge)
{
CvSubdiv2DEdge t = edge;
int count = 0;
// count number of edges in facet
do
{
count++;
t = t.GetEdge(CvNextEdgeType.NextAroundLeft);
} while (t != edge);
CvPoint[] buf = new CvPoint[count];
// gather points
t = edge;
int i;
for (i = 0; i < count; i++)
{
CvSubdiv2DPoint pt = t.Org();
if (pt == null)
{
break;
}
buf[i] = pt.Pt;
t = t.GetEdge(CvNextEdgeType.NextAroundLeft);
}
if (i == count)
{
Random rand = new Random();
CvSubdiv2DPoint pt = edge.RotateEdge(RotateEdgeFlag.Rotate).Dst();
img.FillConvexPoly(buf, CvColor.Random(), LineType.AntiAlias, 0);
img.PolyLine(new CvPoint[][] { buf }, true, CvColor.Black, 1, LineType.AntiAlias, 0);
DrawSubdivPoint(img, pt.Pt, CvColor.Black);
}
}