Examples with ImageLayout javax.media.jai.ImageLayout used on opensource projects

Example 36 with ImageLayout

use of javax.media.jai.ImageLayout in project imageio-ext by geosolutions-it.

the class JP2KReadTest method testJaiOperations.

/**
 * Test read exploiting common JAI operations (Crop-Translate-Rotate)
 *
 * @throws FileNotFoundException
 * @throws IOException
 */
@org.junit.Test
public void testJaiOperations() throws IOException {
    if (!isJP2ECWAvailable) {
        return;
    }
    final File inputFile = TestData.file(this, fileName);
    // ////////////////////////////////////////////////////////////////
    // preparing to read
    // ////////////////////////////////////////////////////////////////
    final ParameterBlockJAI pbjImageRead;
    final ImageReadParam irp = new ImageReadParam();
    Integer xSubSampling = new Integer(2);
    Integer ySubSampling = new Integer(2);
    Integer xSubSamplingOffset = new Integer(0);
    Integer ySubSamplingOffset = new Integer(0);
    irp.setSourceSubsampling(xSubSampling.intValue(), ySubSampling.intValue(), xSubSamplingOffset.intValue(), ySubSamplingOffset.intValue());
    pbjImageRead = new ParameterBlockJAI("ImageRead");
    pbjImageRead.setParameter("Input", inputFile);
    pbjImageRead.setParameter("readParam", irp);
    pbjImageRead.setParameter("Reader", new JP2GDALEcwImageReaderSpi().createReaderInstance());
    final ImageLayout layout = new ImageLayout();
    layout.setTileGridXOffset(0).setTileGridYOffset(0).setTileHeight(256).setTileWidth(256);
    RenderedOp image = JAI.create("ImageRead", pbjImageRead, new RenderingHints(JAI.KEY_IMAGE_LAYOUT, layout));
    if (TestData.isInteractiveTest())
        ImageIOUtilities.visualize(image, "subsampled");
    // ////////////////////////////////////////////////////////////////
    // preparing to crop
    // ////////////////////////////////////////////////////////////////
    final ParameterBlockJAI pbjCrop = new ParameterBlockJAI("Crop");
    pbjCrop.addSource(image);
    // Setting a square crop to avoid blanks zone when rotating.
    Float xCrop = new Float(image.getMinX() + image.getWidth() / 4);
    Float yCrop = new Float(image.getMinX() + image.getWidth() / 4);
    Float cropWidth = new Float(image.getWidth() / 4);
    Float cropHeigth = new Float(image.getWidth() / 4);
    pbjCrop.setParameter("x", xCrop);
    pbjCrop.setParameter("y", yCrop);
    pbjCrop.setParameter("width", cropWidth);
    pbjCrop.setParameter("height", cropHeigth);
    final RenderedOp croppedImage = JAI.create("Crop", pbjCrop);
    if (TestData.isInteractiveTest())
        ImageIOUtilities.visualize(croppedImage, "cropped");
    // ////////////////////////////////////////////////////////////////
    // preparing to translate
    // ////////////////////////////////////////////////////////////////
    final ParameterBlockJAI pbjTranslate = new ParameterBlockJAI("Translate");
    pbjTranslate.addSource(croppedImage);
    Float xTrans = new Float(xCrop.floatValue() * (-1));
    Float yTrans = new Float(yCrop.floatValue() * (-1));
    pbjTranslate.setParameter("xTrans", xTrans);
    pbjTranslate.setParameter("yTrans", yTrans);
    final RenderedOp translatedImage = JAI.create("Translate", pbjTranslate);
    if (TestData.isInteractiveTest())
        ImageIOUtilities.visualize(translatedImage, "translated");
    // ////////////////////////////////////////////////////////////////
    // preparing to rotate
    // ////////////////////////////////////////////////////////////////
    final ParameterBlockJAI pbjRotate = new ParameterBlockJAI("Rotate");
    pbjRotate.addSource(translatedImage);
    Float xOrigin = new Float(cropWidth.floatValue() / 2);
    Float yOrigin = new Float(cropHeigth.floatValue() / 2);
    Float angle = new Float(java.lang.Math.PI / 2);
    pbjRotate.setParameter("xOrigin", xOrigin);
    pbjRotate.setParameter("yOrigin", yOrigin);
    pbjRotate.setParameter("angle", angle);
    final RenderedOp rotatedImage = JAI.create("Rotate", pbjRotate);
    StringBuilder title = new StringBuilder("SUBSAMP:").append("X[").append(xSubSampling.toString()).append("]-Y[").append(ySubSampling.toString()).append("]-Xof[").append(xSubSamplingOffset.toString()).append("]-Yof[").append(ySubSamplingOffset).append("]CROP:X[").append(xCrop.toString()).append("]-Y[").append(yCrop.toString()).append("]-W[").append(cropWidth.toString()).append("]-H[").append(cropHeigth.toString()).append("]TRANS:X[").append(xTrans.toString()).append("]-Y[").append(yTrans.toString()).append("]ROTATE:xOrig[").append(xOrigin.toString()).append("]-yOrig[").append(yOrigin.toString()).append("]-ang[").append(angle.toString()).append("]");
    if (TestData.isInteractiveTest())
        Viewer.visualizeAllInformation(rotatedImage, title.toString());
    else
        Assert.assertNotNull(rotatedImage.getTiles());
    ImageIOUtilities.disposeImage(rotatedImage);
}