利用Emgucv提取surf特征点，如何获取特征点的像素坐标（x、y）？

[WGS0806]

如题，楼主想得到surf提取的特征点坐标，代码如下：

public void FindMatch(Image<Gray, Byte> modelImage, Image<Gray,byte> observedImage, out long matchTime, out VectorOfKeyPointmodelKeyPoints, out VectorOfKeyPoint observedKeyPoints, out Matrix<int>indices, out Matrix<byte> mask, out HomographyMatrix homography)
        {
            int k = 2;
            double uniquenessThreshold = 0.8;
            SURFDetector surfCPU = newSURFDetector(500, false);
            Stopwatch watch;
            homography = null;
            
            //extract features from the objectimage
            modelKeyPoints = newVectorOfKeyPoint();
            Matrix<float>modelDescriptors = surfCPU.DetectAndCompute(modelImage, null, modelKeyPoints);
            watch = Stopwatch.StartNew();
            // extract features from theobserved image
            observedKeyPoints = newVectorOfKeyPoint();
            Matrix<float>observedDescriptors = surfCPU.DetectAndCompute(observedImage, null,observedKeyPoints);
            BruteForceMatcher<float>matcher = new BruteForceMatcher<float>(DistanceType.L2);
            matcher.Add(modelDescriptors);
            indices = newMatrix<int>(observedDescriptors.Rows, k);
            using (Matrix<float> dist =new Matrix<float>(observedDescriptors.Rows, k))
            {
               matcher.KnnMatch(observedDescriptors, indices, dist, k, null);
                mask = newMatrix<byte>(dist.Rows, 1);
                mask.SetValue(255);
               Features2DToolbox.VoteForUniqueness(dist, uniquenessThreshold, mask);
            }
            int nonZeroCount =CvInvoke.cvCountNonZero(mask);
            if (nonZeroCount >= 4)
            {
                nonZeroCount =Features2DToolbox.VoteForSizeAndOrientation(modelKeyPoints, observedKeyPoints,indices, mask, 1.5, 20);
                if (nonZeroCount >= 4)
                    homography =Features2DToolbox.GetHomographyMatrixFromMatchedFeatures(modelKeyPoints,observedKeyPoints, indices, mask, 2);
            }
            watch.Stop();
            matchTime = watch.ElapsedMilliseconds;               
        }

求大神来解答啊！

[WGS0806]

得到的newVectorOfKeyPoint()类型的对象里并没有存各特征点的坐标信息，那坐标应该怎么看呢？

[WGS0806]

有没有人来看看啊

[WGS0806]

已解决。。。

[qq_30049951]

你好，我现在用emgucv显示图像，想获取鼠标点击位置的image的像素点坐标（相对于图片的），请问一下该怎么做，谢谢

[哆啦A梦和兔子]

你好，请问一下，匹配点的属性信息和匹配之前该特征点的属性信息是不是一样，比如尺度因子