public void cuda_pyrdown_pyrup() { using (GpuMat src = new GpuMat(100, 100, MatType.CV_8UC1)) using (GpuMat dst = new GpuMat()) { src.SetTo(Scalar.Black); Cuda.cuda.pyrDown(src, src); Cuda.cuda.pyrUp(src, dst); ShowImagesWhenDebugMode(src, dst); Assert.Equal(0, Cuda.cuda.CountNonZero(dst)); } }