JavaFX Image from a byte array

JavaFXImageConversion.java

import javafx.scene.image.Image;
import javax.imageio.ImageIO;
import java.awt.image.*;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;

 public Image getJavaFXImage(byte[] rawPixels, int width, int height) {
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    try {
        ImageIO.write((RenderedImage) createBufferedImage(rawPixels, width, height), "png", out);
        out.flush();
        } catch (IOException ex) {
            Logger.getLogger(ImageUtils.class.getName()).log(Level.SEVERE, null, ex);
        }
    ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
    return new javafx.scene.image.Image(in);
    }

private BufferedImage createBufferedImage(byte[] pixels, int width, int height) {
    SampleModel sm = getIndexSampleModel(width, height);
    DataBuffer db = new DataBufferByte(pixels, width*height, 0);
    WritableRaster raster = Raster.createWritableRaster(sm, db, null);
    IndexColorModel cm = getDefaultColorModel();
    BufferedImage image = new BufferedImage(cm, raster, false, null);
    return java.awt.image;
}

private SampleModel getIndexSampleModel(int width, int height) {
    IndexColorModel icm = getDefaultColorModel();
    WritableRaster wr = icm.createCompatibleWritableRaster(1, 1);
    SampleModel sampleModel = wr.getSampleModel();
    sampleModel = sampleModel.createCompatibleSampleModel(width, height);
    return sampleModel;
}

private IndexColorModel getDefaultColorModel() {
    byte[] r = new byte[256];
    byte[] g = new byte[256];
    byte[] b = new byte[256];
    for(int i=0; i<256; i++) {
       r[i]=(byte)i;
       g[i]=(byte)i;
       b[i]=(byte)i;
    }
    IndexColorModel defaultColorModel = new IndexColorModel(8, 256, r, g, b);
    return defaultColorModel;
}

public void findMinAndMax(short[] pixels, int width, int height) {
    int size = width*height;
    int value;
    min = 65535;
    max = 0;
    for (int i=0; i<size; i++) {
        value = pixels[i]&0xffff;
        if (value<min)
           min = value;
        if (value>max)
           max = value;
        }
}