public CornerDetect()
{
int cornerCount = 150;
using (IplImage dstImg1 = new IplImage(FilePath.Image.Lenna, LoadMode.AnyColor | LoadMode.AnyDepth))
using (IplImage dstImg2 = dstImg1.Clone())
using (IplImage srcImgGray = new IplImage(FilePath.Image.Lenna, LoadMode.GrayScale))
using (IplImage eigImg = new IplImage(srcImgGray.GetSize(), BitDepth.F32, 1))
using (IplImage tempImg = new IplImage(srcImgGray.GetSize(), BitDepth.F32, 1))
{
CvPoint2D32f[] corners;
Cv.GoodFeaturesToTrack(srcImgGray, eigImg, tempImg, out corners, ref cornerCount, 0.1, 15);
Cv.FindCornerSubPix(srcImgGray, corners, cornerCount, new CvSize(3, 3), new CvSize(-1, -1), new CvTermCriteria(20, 0.03));
for (int i = 0; i < cornerCount; i++)
Cv.Circle(dstImg1, corners[i], 3, new CvColor(255, 0, 0), 2);
cornerCount = 150;
Cv.GoodFeaturesToTrack(srcImgGray, eigImg, tempImg, out corners, ref cornerCount, 0.1, 15, null, 3, true, 0.01);
Cv.FindCornerSubPix(srcImgGray, corners, cornerCount, new CvSize(3, 3), new CvSize(-1, -1), new CvTermCriteria(20, 0.03));
for (int i = 0; i < cornerCount; i++)
Cv.Circle(dstImg2, corners[i], 3, new CvColor(0, 0, 255), 2);
using (new CvWindow("EigenVal", WindowMode.AutoSize, dstImg1))
using (new CvWindow("Harris", WindowMode.AutoSize, dstImg2))
{
Cv.WaitKey(0);
}
}
}
public CornerDetect()
{
// cvGoodFeaturesToTrack, cvFindCornerSubPix
// 画像中のコーナー（特徴点）検出
int cornerCount = 150;
using (IplImage dstImg1 = new IplImage(Const.ImageLenna, LoadMode.AnyColor | LoadMode.AnyDepth))
using (IplImage dstImg2 = dstImg1.Clone())
using (IplImage srcImgGray = new IplImage(Const.ImageLenna, LoadMode.GrayScale))
using (IplImage eigImg = new IplImage(srcImgGray.GetSize(), BitDepth.F32, 1))
using (IplImage tempImg = new IplImage(srcImgGray.GetSize(), BitDepth.F32, 1))
{
CvPoint2D32f[] corners;
// (1)cvCornerMinEigenValを利用したコーナー検出
Cv.GoodFeaturesToTrack(srcImgGray, eigImg, tempImg, out corners, ref cornerCount, 0.1, 15);
Cv.FindCornerSubPix(srcImgGray, corners, cornerCount, new CvSize(3, 3), new CvSize(-1, -1), new CvTermCriteria(20, 0.03));
// (2)コーナーの描画
for (int i = 0; i < cornerCount; i++)
Cv.Circle(dstImg1, corners[i], 3, new CvColor(255, 0, 0), 2);
// (3)cvCornerHarrisを利用したコーナー検出
cornerCount = 150;
Cv.GoodFeaturesToTrack(srcImgGray, eigImg, tempImg, out corners, ref cornerCount, 0.1, 15, null, 3, true, 0.01);
Cv.FindCornerSubPix(srcImgGray, corners, cornerCount, new CvSize(3, 3), new CvSize(-1, -1), new CvTermCriteria(20, 0.03));
// (4)コーナーの描画
for (int i = 0; i < cornerCount; i++)
Cv.Circle(dstImg2, corners[i], 3, new CvColor(0, 0, 255), 2);
// (5)画像の表示
using (new CvWindow("EigenVal", WindowMode.AutoSize, dstImg1))
using (new CvWindow("Harris", WindowMode.AutoSize, dstImg2))
{
Cv.WaitKey(0);
}
}
}
public static OpenCvSharp.IplImage GetSub(this OpenCvSharp.IplImage ipl, OpenCvSharp.CvRect subRect)
{
if (ipl == null)
{
throw new ArgumentNullException("ipl", "ipl is null.");
}
var boundingRect = new CvRect(0, 0, ipl.Width, ipl.Height);
if (!boundingRect.Contains(subRect))
{
throw new InvalidOperationException("subRect is outside of ipl");
}
try
{
ipl.SetROI(subRect);
OpenCvSharp.IplImage sub = new IplImage(
ipl.GetSize(),
ipl.Depth,
ipl.NChannels);
ipl.Copy(sub);
return(sub);
}
finally
{
ipl.ResetROI();
}
}
