将红，绿和蓝转换为RGB [英] Converting Red, Green and Blue to RGB

问题描述

首先，我从以下代码中获得红色，绿色和蓝色值：

first I get Red, Green and Blue value from the following code,

  BufferedImage  image; 
  File input = new File("digital_image_processing.jpg");
     image = ImageIO.read(input);
     width = image.getWidth();
     height = image.getHeight();
      for(int i=0; i<height; i++){
        for(int j=0; j<width; j++){
           Color c = new Color(image.getRGB(j, i));
           int red = (int)c.getRed();
           int green = (int)c.getGreen() ;
           int blue = (int)c.getBlue() ;

这里在从getRGB（）获得红色，绿色和蓝色值后，我想做一些修改用红色，绿色和蓝色值，然后再次我想将其转换为相同的RGB值，或创建一个新的2d阵列RGB的红色，绿色和蓝色的值组合。怎么做？？
任何猜测..帮助

Here After Getting the Red, Green and Blue value from getRGB(), I want to Do some modification with the Red, Green and Blue value then again I want to convert it to same RGB value, or create a new 2d array RGB for the combined Red, Green and blue value. How to do it?? Any Guess.. Pls. Help

推荐答案

Abdul的答案是很好的，但是当创建'Color'类型的新对象时，最简单的方法是：

Abdul's answer is great, but it can be really slow when creating new objects of type 'Color' thousands of times. The simplest way would be:

int rgb = (red << 16 | green << 8 | blue)

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