Question

我目前正在尝试使用Accord.NET框架中的KMeans算法。

继承我的代码：

private Bitmap runKMeans(Bitmap image)
    {
        // Retrieve the number of clusters
        int k = 5;

        // Create converters
        ImageToArray imageToArray = new ImageToArray(min: -1, max: +1);
        ArrayToImage arrayToImage = new ArrayToImage(image.Width, image.Height, min: -1, max: +1);

        // Transform the image into an array of pixel values
        double[][] pixels; 
        imageToArray.Convert(image, out pixels);


        // Create a K-Means algorithm using given k and a
        //  square Euclidean distance as distance metric.
        KMeans kmeans = new KMeans(k, Distance.SquareEuclidean);

        // Compute the K-Means algorithm until the difference in
        //  cluster centroids between two iterations is below 0.05
        int[] idx = kmeans.Compute(pixels, 0.05);

        // Replace every pixel with its corresponding centroid
        pixels.ApplyInPlace((x, i) => kmeans.Clusters.Centroids[idx[i]]);

        //Create a Bitmap and return it
        Bitmap result; arrayToImage.Convert(pixels, out result);

        return result;
    }

当我运行程序时，此行会抛出异常：

int[] idx = kmeans.Compute(pixels, 0.05);

键入：＆＃34; System.InvalidOperationException＆＃34;生成的值不在0和1之间。

经过一些研究后我发现KMeans算法的随机数生成器抛出了这个异常。有谁知道如何解决这个问题？

InvalidOperationException（生成的值不在0和1之间。）Accord.net

0 个答案: