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Thread: Histogram equalization Help Please!

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    Default Histogram equalization Help Please!

     BufferedImage equalizeimage= new BufferedImage(source.getWidth(), source.getHeight(), source.getType());
     
    int red;
    int blue;
    int green;
    int newRGB = 0;
     
     
            //to compute the number red, green,blue at each value
            for(int i=0; i<source.getWidth(); i++) {
                for(int j=0; j<source.getHeight(); j++) {
     
                             // Get pixels by R, G, B
     
                             red = new Color(source.getRGB (i, j)).getRed();
                             green = new Color(source.getRGB (i, j)).getGreen();
                             blue = new Color(source.getRGB (i, j)).getBlue();
     
                    //the number of red at value red increase 1
                    red = histEQ(0)[red]++; 
                    //the number of green at value green increase 1
                    green = histEQ(1)[green]++; 
                    //the number of blue at value blue increase 1
                    blue = histEQ(2)[blue]++;
     
                   newRGB = get.RGB(red, green, blue);
     
                    equalizeimage.setRGB(i, j, newRGB);
                }
            }
          return equalizeimage;
        }


    --- Update ---

    So my problem is that the "histEQ" is underlined with red and I'm not sure how to declare it or something. Does any one have any suggestions? Thanks
    Last edited by jps; May 12th, 2013 at 04:06 PM. Reason: fixed code tag


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    Default Re: Histogram equalization Help Please!

    Quote Originally Posted by dazzle1218 View Post
    [code=java]So my problem is that the "histEQ" is underlined with red and I'm not sure how to declare it or something. Does any one have any suggestions? Thanks
    Always include the full text of error messages (copy - paste) with the code so we can get any details which may be necessary.

    Variables must be declared before they are used. You declared red blue and greed. You also declared newRGB and i and j. What seems to be the problem with declaring histEQ?

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