本文整理汇总了Java中javax.media.jai.operator.ScaleDescriptor类的典型用法代码示例。如果您正苦于以下问题：Java ScaleDescriptor类的具体用法？Java ScaleDescriptor怎么用？Java ScaleDescriptor使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
ScaleDescriptor类属于javax.media.jai.operator包，在下文中一共展示了ScaleDescriptor类的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: getScaledImage
import javax.media.jai.operator.ScaleDescriptor; //导入依赖的package包/类
public static BufferedImage getScaledImage(RenderedImage image, float scale) {
RenderedOp renderedOp = ScaleDescriptor.create(image, scale, scale,
new Float(0.0f), new Float(0.0f), Interpolation.getInstance(Interpolation.INTERP_NEAREST), null);
return renderedOp.getRendering().getAsBufferedImage();
/*
ParameterBlock pb = new ParameterBlock();
pb.addSource(image); // The source image
pb.add((double)scale); // The xScale
pb.add((double)scale); // The yScale
pb.add(0.0); // The x translation
pb.add(0.0); // The y translation
RenderingHints qualityHints = new RenderingHints(RenderingHints.KEY_RENDERING,
RenderingHints.VALUE_RENDER_QUALITY);
RenderedOp resizedImage = JAI.create("SubsampleAverage", pb, qualityHints);
return resizedImage.getAsBufferedImage();
*/
}
示例2: doInBackground
import javax.media.jai.operator.ScaleDescriptor; //导入依赖的package包/类
@Override
protected Image doInBackground() throws Exception {
RenderedImage sourceImage = FileLoadDescriptor.create(imageFilePath, null, true, null);
int width = sourceImage.getWidth();
int height = sourceImage.getHeight();
float scale = (float) (targetDimension.getWidth() / width);
scale = (float) Math.min(scale, targetDimension.getHeight() / height);
if (scale > 1) {
scale = 1.0f;
}
Interpolation interpolation = Interpolation.getInstance(Interpolation.INTERP_NEAREST);
RenderedImage scaledImage = ScaleDescriptor.create(sourceImage,
scale, scale,
0.0f, 0.0f,
interpolation, null);
PlanarImage planarImage = PlanarImage.wrapRenderedImage(scaledImage);
BufferedImage bufferedImage = planarImage.getAsBufferedImage();
planarImage.dispose();
return bufferedImage;
}
示例3: readMasks
import javax.media.jai.operator.ScaleDescriptor; //导入依赖的package包/类
protected void readMasks() {
File file;
if (metadata != null) {
try {
String maskFileName = metadata.getMaskFileName();
if (maskFileName != null) {
file = productDirectory.getFile(maskFileName);
if (file != null && file.exists()) {
GeoTiffProductReader reader = new GeoTiffProductReader(getReaderPlugIn());
Product udmProduct = reader.readProductNodes(file, null);
Band srcBand = udmProduct.getBandAt(0);
float scaleX = (float)metadata.getRasterWidth() / (float)udmProduct.getSceneRasterWidth();
float scaleY = (float)metadata.getRasterHeight() / (float)udmProduct.getSceneRasterHeight();
RenderedOp renderedOp = ScaleDescriptor.create(srcBand.getSourceImage(), scaleX, scaleY, 0.0f, 0.0f, Interpolation.getInstance(Interpolation.INTERP_NEAREST), null);
Band targetBand = product.addBand("unusable_data", srcBand.getDataType());
targetBand.setSourceImage(renderedOp);
FlagCoding cloudsFlagCoding = createFlagCoding(product);
targetBand.setSampleCoding(cloudsFlagCoding);
List<Mask> cloudsMasks = createMasksFromFlagCodding(product, cloudsFlagCoding);
for (Mask mask : cloudsMasks) {
product.getMaskGroup().add(mask);
}
}
}
} catch (IOException e) {
logger.warning(e.getMessage());
}
}
}
示例4: testImageWriterScale
import javax.media.jai.operator.ScaleDescriptor; //导入依赖的package包/类
/**
* Test method tests {@link WebPWriter} with image resize options.
*
* @throws IOException
* the test fails.
*/
@Test(dataProvider = "createImagesWithScaleOptions", enabled = true)
public void testImageWriterScale(final RenderedImage image, final float xScale,
final float yScale, final String outputName) throws IOException {
final String extension = outputName.substring(outputName.lastIndexOf(".") + 1);
// Scale the image.
final RenderedOp scaledImage = ScaleDescriptor.create(image, xScale, yScale, 0f, 0f,
Interpolation.getInstance(Interpolation.INTERP_BICUBIC_2), null);
// get writer
final ImageWriter imgWriter = ImageIO.getImageWritersByFormatName(extension).next();
final ImageWriteParam imgWriteParams = new WebPWriteParam(null);
final String testName = "ScaleOptions";
final File file = createOutputFile(testName, outputName);
final ImageOutputStream imageOutputStream = ImageIO.createImageOutputStream(file);
try {
imgWriter.setOutput(imageOutputStream);
imgWriter.write(null, new IIOImage(scaledImage, null, null), imgWriteParams);
final int length = (int) imageOutputStream.length();
assertTrue(length > 0);
} finally {
try {
imageOutputStream.close();
} catch (final IOException e) {
}
}
}
示例5: scale
import javax.media.jai.operator.ScaleDescriptor; //导入依赖的package包/类
public static RenderedOp scale(final RenderedImage renderedImage, final float xFactor, final float yFactor) {
return ScaleDescriptor.create(renderedImage, xFactor, yFactor, 0.0f, 0.0f, new InterpolationNearest(), null);
}