Accord.Tests.Imaging.LocalBinaryPatternTest.ComputeTest C# (CSharp) Method

        public void ComputeTest()
        {
            byte[,] gradient = new byte[255, 255];

            for (int i = 0; i < 255; i++)
                for (int j = 0; j < 255; j++)
                    gradient[i, j] = (byte)j;

            UnmanagedImage output;
            new MatrixToImage().Convert(gradient, out output);

            LocalBinaryPattern lbp = new LocalBinaryPattern();
            List<double[]> result = lbp.ProcessImage(output);

            int[,] actualPatterns = lbp.Patterns;
            Assert.AreEqual(255, actualPatterns.GetLength(0));
            Assert.AreEqual(255, actualPatterns.GetLength(1));

            for (int i = 0; i < 255; i++)
            {
                for (int j = 0; j < 255; j++)
                {
                    if (j == 0 || i == 0 || i == 254 || j == 254)
                    {
                        Assert.AreEqual(0, actualPatterns[i, j]);
                    }
                    else
                    {
                        Assert.AreEqual(7, actualPatterns[i, j]);
                    }
                }
            }

            Assert.AreEqual(196, result.Count);
        }