Example usage for java.awt.image IndexColorModel IndexColorModel

Introduction

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

Prototype

public IndexColorModel(int bits, int size, byte[] cmap, int start, boolean hasalpha) 

Source Link

Document

Constructs an IndexColorModel from a single array of interleaved red, green, blue and optional alpha components.

Usage

From source file:gdsc.utils.Cell_Outliner.java

private void applyColorModel(ImagePlus imp) {
    // Load the spectrum LUT 
    WindowManager.setTempCurrentImage(imp);
    LutLoader lut = new LutLoader();
    lut.run("spectrum");
    WindowManager.setTempCurrentImage(null);

    // Set zero to black
    ImageProcessor ip = imp.getProcessor();
    IndexColorModel cm = (IndexColorModel) ip.getColorModel();
    byte[] r = new byte[256];
    byte[] b = new byte[256];
    byte[] g = new byte[256];
    cm.getReds(r);//  www  . j  a  v  a2 s .  co m
    cm.getBlues(b);
    cm.getGreens(g);
    r[0] = 0;
    b[0] = 0;
    g[0] = 0;
    cm = new IndexColorModel(8, 256, r, g, b);
    ip.setColorModel(cm);
}

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From source file:MyJava3D.java

private BufferedImage createBinaryImage(int w, int h, int pixelBits) {

    int[] pixels = new int[w * h];
    int bytesPerRow = w * pixelBits / 8;
    if (w * pixelBits % 8 != 0) {
        bytesPerRow++;//from www .j  av a2  s  .  c om
    }
    byte[] imageData = new byte[h * bytesPerRow];
    IndexColorModel cm = null;
    switch (pixelBits) {
    case 1:
        cm = new IndexColorModel(pixelBits, lut1Arr.length, lut1Arr, lut1Arr, lut1Arr);
        break;
    case 2:
        cm = new IndexColorModel(pixelBits, lut2Arr.length, lut2Arr, lut2Arr, lut2Arr);
        break;
    case 4:
        cm = new IndexColorModel(pixelBits, lut4Arr.length, lut4Arr, lut4Arr, lut4Arr);
        break;
    default: {
        new Exception("Invalid # of bit per pixel").printStackTrace();
    }
    }

    DataBuffer db = new DataBufferByte(imageData, imageData.length);
    WritableRaster r = Raster.createPackedRaster(db, w, h, pixelBits, null);
    return new BufferedImage(cm, r, false, null);
}

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From source file:com.jcraft.weirdx.XColormap.java

void mkIcm() {
    if ((visual.clss & DynamicClass) != 0 || (flags & BeingCreated) != 0) {
        if (visual.depth.depth == 16)
            return;
        cm = new IndexColorModel((r.length == 256 ? 8 : 1), r.length, r, g, b);
    }/*from w w w  . jav  a2 s  . c  o m*/
    icmtime = System.currentTimeMillis();
}

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From source file:odcplot.OdcPlot.java

/**
 * Generate a Index Color Model with our color coding and establish text for color legend (if enabled)
 * /*from   w  w  w .j  ava2 s.  c  om*/
 * @return 
 */
private IndexColorModel getColorModel() {
    byte[] r = new byte[256];
    byte[] g = new byte[256];
    byte[] b = new byte[256];
    int rd, gr, bl;

    for (int i = 0; i < 256; i++) {
        r[i] = g[i] = b[i] = 0;

        if (i < keyColors.length) {
            rd = keyColors[i].getRed();
            gr = keyColors[i].getGreen();
            bl = keyColors[i].getBlue();
        } else {
            int intensity = Math.round((i - 8) / 255.f * 255);
            rd = gr = bl = intensity;
        }

        // deal with signed bytes and unsigned 8-bit index colors
        r[i] |= rd & 0xff;
        g[i] |= gr & 0xff;
        b[i] |= bl & 0xff;
    }
    IndexColorModel ret = new IndexColorModel(8, 256, r, g, b);
    return ret;
}

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From source file:org.apache.fop.render.pcl.PCLGenerator.java

private RenderedImage getMask(RenderedImage img, Dimension targetDim) {
    ColorModel cm = img.getColorModel();
    if (cm.hasAlpha()) {
        BufferedImage alpha = new BufferedImage(img.getWidth(), img.getHeight(), BufferedImage.TYPE_BYTE_GRAY);
        Raster raster = img.getData();
        GraphicsUtil.copyBand(raster, cm.getNumColorComponents(), alpha.getRaster(), 0);

        BufferedImageOp op1 = new LookupOp(new ByteLookupTable(0, THRESHOLD_TABLE), null);
        BufferedImage alphat = op1.filter(alpha, null);

        BufferedImage mask;/*w w  w  . ja v  a 2  s. c o  m*/
        if (true) {
            mask = new BufferedImage(targetDim.width, targetDim.height, BufferedImage.TYPE_BYTE_BINARY);
        } else {
            byte[] arr = { (byte) 0, (byte) 0xff };
            ColorModel colorModel = new IndexColorModel(1, 2, arr, arr, arr);
            WritableRaster wraster = Raster.createPackedRaster(DataBuffer.TYPE_BYTE, targetDim.width,
                    targetDim.height, 1, 1, null);
            mask = new BufferedImage(colorModel, wraster, false, null);
        }

        Graphics2D g2d = mask.createGraphics();
        try {
            AffineTransform at = new AffineTransform();
            double sx = targetDim.getWidth() / img.getWidth();
            double sy = targetDim.getHeight() / img.getHeight();
            at.scale(sx, sy);
            g2d.drawRenderedImage(alphat, at);
        } finally {
            g2d.dispose();
        }
        /*
        try {
        BatchDiffer.saveAsPNG(alpha, new java.io.File("D:/out-alpha.png"));
        BatchDiffer.saveAsPNG(mask, new java.io.File("D:/out-mask.png"));
        } catch (IOException e) {
        e.printStackTrace();
        }*/
        return mask;
    } else {
        return null;
    }
}

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