colors - What is high performance for creating a TIF image from a background TIF and a foreground TIF in java -

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i have 2 tif files, 1 background (overlay) , other foreground. following code used combining 2 tifs.

    // background color of foreground image     int w = color.white.getrgb();      // fill pixels not background color     (int = 0; < foregroundimage.getwidth(); i++)     {         (int j = 0; j < foregroundimage.getheight(); j++)         {             int x = foregroundimage.getrgb(i, j);             if (x != w)                 backgroundimage.setrgb(i, j, x);         }     }

is there other way has better performance this?

you can make color.white pixels transparent using rgbimagefilter, shown here, or lookupop, mentioned here. can use alphacomposite.src_over rule combine images. alphacompositedemo example lets 1 explore available modes, , there's related example here. of course, you'll need profile both approaches see faster.


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