Java库，用于图像特征提取和比较

Question

I need a library for Histogram of Gradient (and similar) and SVM (or similar techniques) for Java (not Android). I Googled but nothing definitive came up. Can you help me with that?

Answer 1

For compute the HOG you can do it using Catalano Framework .

See the example below:

    //Load the image.
    FastBitmap fb = new FastBitmap(bufferedImage);

    //if the image is RGB, we must convert to grayscale.
    if(fb.isGrayscale()) fb.toGrayscale();

    HistogramOfOrientedGradients hog = new HistogramOfOrientedGradients();
    ArrayList<double[]> hists = hog.ProcessImage(fb);

Here contains the tutorial how to use.