CaptureTest.cs

using System;
using System.Text;
using System.Diagnostics;
using System.IO;
using OpenCvSharp;
using OpenCvSharp.CPlusPlus;

namespace CaptureTest
{
    class Program
    {
        static void Main(string[] args)
        {
            // Webカメラから画像を取り込んでMatに変換する時に、どの方法が早いかをテスト
            Cv1Capture(10);
            Cv2Capture(10);
        }

        public static void Cv1Capture(int count, string fileName = "Cv1Capture.txt")
        {
            using (var writer = new StreamWriter(fileName, true, Encoding.GetEncoding("utf-8")))
            {
                for (int i = 0; i < count; i++)
                {
                    var sw = new Stopwatch();
                    sw.Start();
                    var capture = Cv.CreateCameraCapture(0);
                    for (int k = 0; k < 100; k++)
                    {
                        var frame = capture.QueryFrame();
                        Cv2.ImShow("Capture", Cv2.CvArrToMat(frame));
                        Cv.WaitKey(5);
                    }
                    sw.Stop();
                    Console.WriteLine(sw.ElapsedMilliseconds);
                    writer.WriteLine(sw.ElapsedMilliseconds.ToString());
                }
            }
        }

        public static void Cv2Capture(int count, string fileName = "Cv2Capture.txt")
        {
            using (var writer = new StreamWriter(fileName, true, Encoding.GetEncoding("utf-8")))
            {
                var frame = new Mat();
                for (int i = 0; i < count; i++)
                {
                    var sw = new Stopwatch();
                    sw.Start();
                    var capture = Cv2.CreateFrameSource_Camera(0);
                    for (int k = 0; k < 100; k++)
                    {
                        capture.NextFrame(frame);
                        Cv2.ImShow("Capture", frame);
                        Cv.WaitKey(5);
                    }
                    sw.Stop();
                    Console.WriteLine(sw.ElapsedMilliseconds);
                    writer.WriteLine(sw.ElapsedMilliseconds.ToString());
                }
            }
        }
    }
}