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How do you make the alpha channel all black?


timdickins

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Are you trying too make a alpha channel for a portrait? If so, this is what I do. I cut out the portrait and putt it onto a 128x128 transparent backround, Then I make an all new 128x128 white backround(255,255,255), then I make another all new black backround(0,0,0).

Next I copy the black backround and paste it onto the white backround as a new layer.

Then I take the picture thats on the transparent backround paste it as a new section on the white and black backrounds.

I then use the rectangle selection tool and just click so that the cut around the picture disapears.

Then I use the lasso tool and I trace around the picture and select cut, now since you had the black layer set as a new layer over the white layer you should have a black outline with the picture area white.

Then you wanna flatten the layers then increase or decrease too 8 bit color format(Thats "256"). Then grayscale it and save it as the nuber of the bmp but with a -a at the end.

then with the picture with the transparent backround you can just flatten it and save it as the portrait bmp.

I hope this helps, I tryed too explain it the best I could.

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he is trying to create an alpha channel to remove the dirt from a stadium to make astroturf, as would be obvious if he didn't keep opening new threads like this, but stayed in the original one :roll:

But hey, I'm no mod, so what do I know :wink:

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