Java读取图片 cmyk转rgb

最新推荐文章于 2021-02-24 17:08:24 发布

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最新推荐文章于 2021-02-24 17:08:24 发布

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分类专栏： java基础文章标签： java

本文链接：https://blog.youkuaiyun.com/zhangyuxuan2/article/details/107039335

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背景

使用java处理图片的时候，比如用ImageIo.read（图片）时，是不能处理CMYK的图片的，会报错，因此，我们需要将CMYK转化为RGB模式，并且排除转换时的色差问题。

代码

package com.e369.elc.framework.image;

import java.awt.color.ColorSpace;
import java.awt.color.ICC_ColorSpace;
import java.awt.color.ICC_Profile;
import java.awt.image.BufferedImage;
import java.awt.image.ColorConvertOp;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import javax.imageio.IIOException;
import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.stream.ImageInputStream;
import org.apache.sanselan.ImageReadException;
import org.apache.sanselan.Sanselan;
import org.apache.sanselan.common.byteSources.ByteSource;
import org.apache.sanselan.common.byteSources.ByteSourceFile;
import org.apache.sanselan.formats.jpeg.JpegImageParser;
import org.apache.sanselan.formats.jpeg.segments.UnknownSegment;

public class Cmyk2RgbUtil {
   

  public static final int COLOR_TYPE_RGB = 1;
  public static final int COLOR_TYPE_CMYK = 2;
  public static final int COLOR_TYPE_YCCK = 3;

  public static BufferedImage readImage(String fileName) throws IOException, ImageReadException {
   
    int colorType = COLOR_TYPE_RGB;
    boolean hasAdobeMarker = false;
    File file = new File(fileName);
    ImageInputStream stream = ImageIO.createImageInputStream(file);
    Iterator<ImageReader> iter = ImageIO.getImageReaders(

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