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Drawing a grey-scale image [message #462200]

Fri, 07 October 2005 22:45

Eclipse User

Originally posted by: waynetg.telkomsa.net

Hi all,

I'm trying to create a grey-scale image (only binary really) but the
constructors only seem to cater for RGB. Heres a section of code.

<code>
int [][] newLines = binarize(lines,height,width,threshold);
RGB[] rgbarr = new RGB[] {new RGB(0,0,0),new RGB(255,255,255)};
PaletteData pal = new PaletteData(rgbarr);
ImageData newId = new ImageData(width,height,1,pal);

for(int i=0;i<height;i++)
{
newId.setPixels(i,0,width,newLines[i],0);
}

img = new Image(disp,newId);
</code>

binarize turns an existing greyscale image into a 2d array of 1s and 0s.
When img is rendered it is almost all black, even without the binarization.

Could anyone point me in the right direction?

Regards
Tshwala

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