用Java创建多页Tiff [英] Create Multi-Page Tiff with Java

问题描述

我有兴趣拍摄一张tif图像，并在其中添加一个包含Java文本的图层，如果可能的话，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.

我可以从这里要么将文本添加到tif，要么只用文本创建一个相同大小的新tif，但不要将它们保存为多个页面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();
    }

}
}

Maven：

<dependency>
    <groupId>com.twelvemonkeys.imageio</groupId>
    <artifactId>imageio-tiff</artifactId>
    <version>3.2.1</version>
</dependency>

如何从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jpgs，但是jpgs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 ImageIO API。既然Java ImageIO附带了一个捆绑的TIFF插件，从Java 9开始，下面应该可以工作，没有额外的依赖。对于Java 8及更早版本，您仍需要一个TIFF插件，如上所述的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，以获取如何操作的示例。

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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