使用 Java 创建多页 Tiff [英] Create Multi-Page Tiff with Java
问题描述
我有兴趣拍摄 tif 图像并向其中添加一个包含 Java 文本的图层，如果可能，最好使用 Twelve Monkeys 图像库.
I'm interested in taking a tif image and adding a layer to it that contains text with Java, preferably with the Twelve Monkeys image library if possible.
我可以调整 此处 将文本添加到 tif 或创建仅包含文本的相同大小的新 tif，但不将它们保存为多页 tif.例如:
I can tweak the code from here to either add text to a tif or create a new tif of the same size with only text, but not save them as a multi-page tif. For example:
import javax.imageio.*;
import javax.imageio.stream.ImageOutputStream;
import java.awt.*;
import java.awt.image.*;
import java.io.*;
public class ImageUtil {
public static void main(String[] args) throws Exception {
BufferedImage src = ImageIO.read(new File("/path/to/main.tif"));
BufferedImage text = createTextLayer(src);
BufferedImage[] images = new BufferedImage[]{src, text};
createMultiPage(images);
}
private static BufferedImage createTextLayer(BufferedImage src) {
int w = src.getWidth();
int h = src.getHeight();
BufferedImage img = new BufferedImage(
w, h, BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = img.createGraphics();
g2d.drawImage(img, 0, 0, null);
g2d.setPaint(Color.red);
g2d.setFont(new Font("Serif", Font.BOLD, 200));
String s = "Hello, world!";
FontMetrics fm = g2d.getFontMetrics();
int x = img.getWidth() - fm.stringWidth(s) - 5;
int y = fm.getHeight() * 5;
g2d.drawString(s, x, y);
g2d.dispose();
return img;
}
private static void createMultiPage(BufferedImage[] images) throws IOException {
File tempFile = new File("/new/file/path.tif");
//I also tried passing in stream var below to the try, but also receive java.lang.UnsupportedOperationException: Unsupported write variant!
//OutputStream stream = new FileOutputStream(tempFile);
// Obtain a TIFF writer
ImageWriter writer = ImageIO.getImageWritersByFormatName("TIFF").next();
try (ImageOutputStream output = ImageIO.createImageOutputStream(tempFile)) {
writer.setOutput(output);
ImageWriteParam params = writer.getDefaultWriteParam();
params.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
params.setCompressionType("None");
//error here: java.lang.UnsupportedOperationException: Unsupported write variant!
writer.prepareWriteSequence(null);
for (int i = 0; i < images.length; i++){
writer.writeToSequence(new IIOImage(images[i], null, null), params);
}
// We're done
writer.endWriteSequence();
}
}
}
马文:
<dependency>
<groupId>com.twelvemonkeys.imageio</groupId>
<artifactId>imageio-tiff</artifactId>
<version>3.2.1</version>
</dependency>
如何根据图像和生成的文本图像创建多页 tif?
How can I create a multi-page tif from an image and the generated text-image?
我能够获得以下代码来运行 jpg，但 jpg 没有图层.
I was able to get the following code to run for jpgs, but jpgs don't have layers.
public static void testWriteSequence() throws IOException {
BufferedImage[] images = new BufferedImage[] {
new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB),
new BufferedImage(110, 100, BufferedImage.TYPE_INT_RGB),
new BufferedImage(120, 100, BufferedImage.TYPE_INT_RGB),
new BufferedImage(130, 100, BufferedImage.TYPE_INT_RGB)
};
Color[] colors = {Color.BLUE, Color.GREEN, Color.RED, Color.ORANGE};
for (int i = 0; i < images.length; i++) {
BufferedImage image = images[i];
Graphics2D g2d = image.createGraphics();
try {
g2d.setColor(colors[i]);
g2d.fillRect(0, 0, 100, 100);
}
finally {
g2d.dispose();
}
}
//ImageWriter writer = createImageWriter();
ImageWriter writer = ImageIO.getImageWritersByFormatName("JPEG").next();
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
try (ImageOutputStream output = ImageIO.createImageOutputStream(buffer)) {
writer.setOutput(output);
ImageWriteParam params = writer.getDefaultWriteParam();
params.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
writer.prepareWriteSequence(null);
params.setCompressionType("JPEG");
writer.writeToSequence(new IIOImage(images[0], null, null), params);
params.setCompressionType("JPEG");
writer.writeToSequence(new IIOImage(images[1], null, null), params);
params.setCompressionType("JPEG");
writer.writeToSequence(new IIOImage(images[2], null, null), params);
params.setCompressionType("JPEG");
writer.writeToSequence(new IIOImage(images[3], null, null), params);
writer.endWriteSequence();
File tempFile = new File("/path/to/new/file.jpg");
OutputStream out = new FileOutputStream(tempFile);
buffer.writeTo(out);
}
}
谢谢.
推荐答案
您可以使用标准的 ImageIO API 编写多页图像(以支持它的格式，如 TIFF).现在 Java ImageIO 捆绑了一个 TIFF 插件，从 Java 9 开始，下面应该可以正常工作，没有额外的依赖项.对于 Java 8 及更早版本，您仍然需要一个 TIFF 插件，例如前面提到的 JAI 或 TwelveMonkeys.
You can write multi-page images (in formats that supports it, like TIFF), using the standard ImageIO API. Now that Java ImageIO comes with a TIFF plugin bundled, starting from Java 9, the below should just work, with no extra dependencies. For Java 8 and earlier, you still need a TIFF plugin, like JAI or TwelveMonkeys as mentioned.
例如参见 TIFFImageWriterTest.testWriteSequence 方法来自 TwelveMonkeys ImageIO 项目的测试用例，例如如何执行此操作.
See for example the TIFFImageWriterTest.testWriteSequence method from the TwelveMonkeys ImageIO project's test cases, for an example of how to do it.
重要的部分:
BufferedImage[] images = ...
OutputStream stream = ... // May also use File here, as output
// Obtain a TIFF writer
ImageWriter writer = ImageIO.getImageWritersByFormatName("TIFF").next();
try (ImageOutputStream output = ImageIO.createImageOutputStream(stream)) {
writer.setOutput(output);
ImageWriteParam params = writer.getDefaultWriteParam();
params.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
// Compression: None, PackBits, ZLib, Deflate, LZW, JPEG and CCITT variants allowed
// (different plugins may use a different set of compression type names)
params.setCompressionType("Deflate");
writer.prepareWriteSequence(null);
for (BufferedImage image : images) {
writer.writeToSequence(new IIOImage(image, null, null), params);
}
// We're done
writer.endWriteSequence();
}
writer.dispose();
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