メモリリークする

CannotAllocateMemoryMethods.cs

// using OpenCvSharp;
// using OpenCvSharp.CPlusPlus;

// リソースを解放しないとメモリリークする
public static void CannotAllocateMemoryMethod(int cameraId)
{
    using (var capture = new VideoCapture(cameraId))
    {
        var srcMat = new Mat();

        while (Cv2.WaitKey(1) < 0)
        {
            capture.Read(srcMat);

            var grayMat = srcMat.CvtColor(ColorConversion.BgrToGray);
            var binaryMat = grayMat.Threshold(100, 255, ThresholdType.Binary);
            var dstMat = binaryMat.CvtColor(ColorConversion.GrayToBgr);

            Cv2.ImShow("src", srcMat);
            Cv2.ImShow("dst", dstMat);

//            grayMat.Dispose();
//            binaryMat.Dispose();
//            dstMat.Dispose();
        }
    }
}

// メソッドチェーンしてもメモリリークする
public static void CannotAllocateMemoryMethod2(int cameraId)
{
    using (var capture = new VideoCapture(cameraId))
    {
        var srcMat = new Mat();

        while (Cv2.WaitKey(1) < 0)
        {
            capture.Read(srcMat);

            srcMat.CvtColor(ColorConversion.BgrToGray)
               .Threshold(100, 255, ThresholdType.Binary)
               .CvtColor(ColorConversion.GrayToBgr);

            Cv2.ImShow("src", srcMat);
        }
    }

}