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AAARGHH !! (recover transparency)
http://gimpchat.com/viewtopic.php?f=8&t=592		 Page 1 of 1
Author:  PhotoComix [ Thu Oct 07, 2010 5:03 am ]
Post subject:  AAARGHH !! (recover transparency)
For a stupid mistake i exported this as JPG and transparency went lost

Attachment:
afull4ani.png
afull4ani.png [ 288.07 KiB | Viewed 2487 times ]


Remove the external black is easy but i wish recover the semitransparency from inside the object were the greyscale correspond to degree of transparency

But how ?

EDIT

Huum...is in BW so copy the image and paste as alpha channel or selection ,or layermask may the right direction.
PS

sort of works but with a limit, semitransparent highlight are all recovered but simitramsparent shadow get MIA

Thinking better some were already killed by the Black BG, if you overlay a semitranparent black to pure black
you just get solid black...damn
Author:  lylejk [ Thu Oct 07, 2010 8:34 am ]
Post subject:  Re: AAARGHH !! (recover transparency)
Like the glass spheres PC. Maybe if jpeg2000 gets adopted, this won't be an issue anymore (not holding my breath though). :)
Author:  Oregonian [ Thu Oct 07, 2010 8:50 am ]
Post subject:  Re: AAARGHH !! (recover transparency)
This may have worked. I ran the image through color to alpha and got rid of the black. Duplicated the layer and inverted the color of the bottom layer so had a white layer on top and bottom black layer, then merged the layers.

Image

I cut off a piece of it and put a red bg behind it to show the results.

Image
Author:  Rod [ Thu Oct 07, 2010 9:51 am ]
Post subject:  Re: AAARGHH !! (recover transparency)
That's pretty much what i did except i just ran color to alpha on the black and added a red bg layer.
Image
Author:  Oregonian [ Thu Oct 07, 2010 10:18 am ]
Post subject:  Re: AAARGHH !! (recover transparency)
Looks good Rod, but I believe PC wanted to preserve the gray in the image too.
Author:  PhotoComix [ Thu Oct 07, 2010 10:40 am ]
Post subject:  Re: AAARGHH !! (recover transparency)
Oregonian and Rod ,Thank
i'm happy i could recover that glass sphere

and happy you like lylejk
Author:  PhotoMaster [ Thu Oct 07, 2010 3:47 pm ]
Post subject:  Re: AAARGHH !! (recover transparency)
That is amazing!!!! I wouldn't have thought of doing this to recover the glass image!!

Simply Brilliant!!
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