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Re: How to do image-type

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  To: comp.lang.java.gui
Thomas Weidenfeller wrote:
> hiwa wrote:
> > I'd like to convert a standard TYPE_INT_ARGB BufferedImage to a
> > TYPE_BYTE_BINARY one. Getting simple black and white ARGB image from
> > original image was a piece of cake. However, I have no clue from there
> > on.
>
> You did not tell us what you want to achieve. So the following should
> give you what you asked for, but it might not be what you really want:
>
> 	BufferedImage argb = ...
>
> 	BufferedImage bb = new BufferedImage(
> 				argb.getWidth(),
> 				argb.getHeight(),
> 				TYPE_BYTE_BINARY);
> 	Graphics2D g = bb.createGraphics();
> 	bb.drawImage(argb, 0, 0, null);
>
> Note: Not using an image observer can get you in trouble, e.g. if argb
> is not completely loaded when you try to draw it on bb. But you get the
> idea.
>
> /Thomas
I tried that method first but what I got was a all black image --
darkness, darkness, be my pillow...
When I tried blue&white instead of black&white, what I got was a all
blue image -- deep deep sea all around us...
----------------------------------------
byte b = (byte)255;
    icm = new IndexColorModel
     (1, 2, new byte[]{0, b}, new byte[]{0, b}, new byte[] {b, b});
bw = new BufferedImage(scrw, scrh, TYPE_BYTE_BINARY, icm);
----------------------------------------

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How to do image-type conv "hiwa" <hiwa@THRWHITE.remove-dii-this> - 2011-04-27 15:25 +0000
  Re: How to do image-type "hiwa" <hiwa@THRWHITE.remove-dii-this> - 2011-04-27 15:25 +0000
    Re: How to do image-type "Thomas Fritsch" <thomas.fritsch@THRWHITE.remove-dii-this> - 2011-04-27 15:25 +0000
  Re: How to do image-type "Thomas Weidenfeller" <thomas.weidenfeller@THRWHITE.remove-dii-this> - 2011-04-27 15:25 +0000
  Re: How to do image-type "hiwa" <hiwa@THRWHITE.remove-dii-this> - 2011-04-27 15:25 +0000

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