Example usage for java.awt.image Kernel Kernel

Introduction

In this page you can find the example usage for java.awt.image Kernel Kernel.

Prototype

public Kernel(int width, int height, float[] data) 

Source Link

Document

Constructs a Kernel object from an array of floats.

Usage

From source file:view.FramePrincipal.java

@SuppressWarnings("Convert2Diamond")
private void initKernels() {
    kernels = new ArrayList<Kernel>();
    kernelNames = new ArrayList<String>();
    listaDadosEstatisticosJava = new ArrayList<DadosEstatisticos>();
    listaDadosEstatisticosOPENCL = new ArrayList<DadosEstatisticos>();
    listaDadosEstatisticosJavaTHREAD = new ArrayList<DadosEstatisticos>();

    int kernelSizeX = 0;
    int kernelSizeY = 0;
    float kernelData[] = null;

    // Edge detection
    kernelSizeX = 3;/*from   w  w w  .  jav a2  s  .  c o m*/
    kernelSizeY = 3;
    kernelData = new float[] { -1, 0, -1, 0, 4, 0, -1, 0, -1 };
    kernels.add(new Kernel(kernelSizeX, kernelSizeY, kernelData));
    kernelNames.add("Negativar");

    // Sharpen
    kernelSizeX = 3;
    kernelSizeY = 3;
    kernelData = new float[] { -1, 0, -1, 0, 5, 0, -1, 0, -1 };
    kernels.add(new Kernel(kernelSizeX, kernelSizeY, kernelData));
    kernelNames.add("Desbotar");

    // Blur
    for (int i = 3; i <= 21; i += 2) {
        initRedimencionarKernel(i);
    }
}

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From source file:org.sbs.util.ImageCompress.java

/**
 * gif/*from  w w w  . ja v  a  2 s .c om*/
 * 
 * @param originalFile
 *            
 * @param resizedFile
 *            ?
 * @param newWidth
 *            
 * @param newHeight
 *             -1?
 * @param quality
 *             ()
 * @throws IOException
 */
public void resize(File originalFile, File resizedFile, int newWidth, int newHeight, float quality)
        throws IOException {
    if (quality < 0 || quality > 1) {
        throw new IllegalArgumentException("Quality has to be between 0 and 1");
    }
    ImageIcon ii = new ImageIcon(originalFile.getCanonicalPath());
    Image i = ii.getImage();
    Image resizedImage = null;
    int iWidth = i.getWidth(null);
    int iHeight = i.getHeight(null);
    if (newHeight == -1) {
        if (iWidth > iHeight) {
            resizedImage = i.getScaledInstance(newWidth, (newWidth * iHeight) / iWidth, Image.SCALE_SMOOTH);
        } else {
            resizedImage = i.getScaledInstance((newWidth * iWidth) / iHeight, newWidth, Image.SCALE_SMOOTH);
        }
    } else {
        resizedImage = i.getScaledInstance(newWidth, newHeight, Image.SCALE_SMOOTH);
    }
    // This code ensures that all the pixels in the image are loaded.
    Image temp = new ImageIcon(resizedImage).getImage();
    // Create the buffered image.
    BufferedImage bufferedImage = new BufferedImage(temp.getWidth(null), temp.getHeight(null),
            BufferedImage.TYPE_INT_RGB);
    // Copy image to buffered image.
    Graphics g = bufferedImage.createGraphics();
    // Clear background and paint the image.
    g.setColor(Color.white);
    g.fillRect(0, 0, temp.getWidth(null), temp.getHeight(null));
    g.drawImage(temp, 0, 0, null);
    g.dispose();
    // Soften.
    float softenFactor = 0.05f;
    float[] softenArray = { 0, softenFactor, 0, softenFactor, 1 - (softenFactor * 4), softenFactor, 0,
            softenFactor, 0 };
    Kernel kernel = new Kernel(3, 3, softenArray);
    ConvolveOp cOp = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null);
    bufferedImage = cOp.filter(bufferedImage, null);
    // Write the jpeg to a file.
    FileOutputStream out = FileUtils.openOutputStream(resizedFile);
    // Encodes image as a JPEG data stream
    JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
    JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bufferedImage);
    param.setQuality(quality, true);
    encoder.setJPEGEncodeParam(param);
    encoder.encode(bufferedImage);
}

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From source file:qupath.lib.algorithms.color.EstimateStainVectors.java

/**
 * Smooth out compression artefacts by running 3x3 filter twice (roughly approximates a small Gaussian filter).
 * //from   w  w w  .  ja  va  2 s  . com
 * @param img
 * @return
 */
public static BufferedImage smoothImage(final BufferedImage img) {
    ConvolveOp op = new ConvolveOp(new Kernel(3, 3,
            new float[] { 1f / 9f, 1f / 9f, 1f / 9f, 1f / 9f, 1f / 9f, 1f / 9f, 1f / 9f, 1f / 9f, 1f / 9f }),
            ConvolveOp.EDGE_NO_OP, null);
    BufferedImage img2 = op.filter(img, null);
    return op.filter(img2, null);
}

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From source file:rega.genotype.ui.util.GenotypeLib.java

public static void scalePNG(File in, File out, double perc) throws IOException {
    Image i = ImageIO.read(in);
    Image resizedImage = null;/*  w w  w.j av  a 2s . c o  m*/

    int newWidth = (int) (i.getWidth(null) * perc / 100.0);
    int newHeight = (int) (i.getHeight(null) * perc / 100.0);

    resizedImage = i.getScaledInstance(newWidth, newHeight, Image.SCALE_SMOOTH);

    // This code ensures that all the pixels in the image are loaded.
    Image temp = new ImageIcon(resizedImage).getImage();

    // Create the buffered image.
    BufferedImage bufferedImage = new BufferedImage(temp.getWidth(null), temp.getHeight(null),
            BufferedImage.TYPE_INT_RGB);

    // Copy image to buffered image.
    Graphics g = bufferedImage.createGraphics();

    // Clear background and paint the image.
    g.setColor(Color.white);
    g.fillRect(0, 0, temp.getWidth(null), temp.getHeight(null));
    g.drawImage(temp, 0, 0, null);
    g.dispose();

    // Soften.
    float softenFactor = 0.05f;
    float[] softenArray = { 0, softenFactor, 0, softenFactor, 1 - (softenFactor * 4), softenFactor, 0,
            softenFactor, 0 };
    Kernel kernel = new Kernel(3, 3, softenArray);
    ConvolveOp cOp = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null);
    bufferedImage = cOp.filter(bufferedImage, null);

    ImageIO.write(bufferedImage, "png", out);
}

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