On 10/11/2010 08:09 PM, David Cooney wrote:
Hello List - I recently downloaded the GIMP2.6 and have been playing
with it in an attempt to modify some existing pictures and generally
play with the outcome. Kind of like Mr. Potato Head (hopefully you
know what that is) , I am trying to take a part of one picture, say
the nose, and transpose it to another picture; or perhaps the lips,
eyes, etc. Once I have one aspect copied on the other picture I get
stuck making it happen, both in context and melding of image sizes and
a “seamless” transition. Could you refer me to the right tutorial, or
provide me a facile method to perform this feature using GIMP? Also,
how do you rectify the image size so that if the pictures are of
different sizes the transposed part looks of appropriate dimension to
the host picture.
I very much appreciate your time and any input you might afford me.
The right way to do it is to keep all the added bits in their own layer
until the end. Layers can be moved, scaled and rotated around with the
move, scale and rotate tools in the tools palette. You can combine move
and scale quite seamlessly (but if anyone knows how to rotate at the
same time, I'll be glad to hear it).
Seamless transition between layers is achieved by gradual transparency
on the edges. The easy way to achieve it is to "feather" the selection
on a couple of pixels when you copy/paste. A more complete way is to use
layer masks that give you full control of the amount of transparency of
all pixels in a layer. Basicall you add a mask to the layer in the
layers dialog and click on it to make the editable thing. Wherever you
apply black the layer image is transparent and where it's white the
layer is opaque. You can of course use various levels of grey... so you
can literally paint transparency.
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