OpenCVsharp：直播

Question

我正在做一个需要使用 RTSP 或 RTMP 流式传输到 wowza 流媒体服务器的项目。我知道如何捕捉视频。我尝试使用 CvVideoWrier。但它并没有真正奏效。

CvCapture cap = CvCapture.FromCamera(0);
            cap.SetCaptureProperty(CaptureProperty.FrameHeight, pictureBox1.Height);
            cap.SetCaptureProperty(CaptureProperty.FrameWidth, pictureBox1.Width);
            while (true)
            {
                IplImage img = cap.QueryFrame();
                Bitmap bm = BitmapConverter.ToBitmap(img);
                bm.SetResolution(pictureBox1.Width, pictureBox1.Height);
                pictureBox1.Image = bm;

                img = null;
                bm = null;
            }

这就是我到目前为止所做的。请帮助我..我在这一点上停留了超过 2 天。

Answer 1

using System;
using OpenCvSharp;

namespace EdgeDetect
{
    class Template
    {
        public Template()
        {
            CvCapture cap = CvCapture.FromCamera(1);
            CvWindow w = new CvWindow("Template Matching");

            IplImage tpl = Cv.LoadImage("speedlimit55.jpg", LoadMode.Color);

            CvPoint minloc, maxloc;

            double minval, maxval;

            while (CvWindow.WaitKey(10) < 0)
            {
                IplImage img = cap.QueryFrame();
                IplImage res = Cv.CreateImage(Cv.Size(img.Width - tpl.Width + 1, img.Height - tpl.Height + 1), BitDepth.F32, 1);
                Cv.MatchTemplate(img, tpl, res, MatchTemplateMethod.CCoeff);
                Cv.MinMaxLoc(res, out minval, out maxval, out minloc, out maxloc, null);
                Cv.Rectangle(img, Cv.Point(minloc.X, minloc.Y), Cv.Point(minloc.X + tpl.Width, minloc.Y + tpl.Height), CvColor.Red, 1, 0, 0);
                w.Image = img;
                Cv.ReleaseImage(res);
                Cv.ReleaseImage(img);
            }
        }
    }
}

OpenCVsharp：直播

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