[iPhone] How to make one color transparent on a UIImage?
On my iPhone app I have a UIImage instance. I want to get a derived a UIImage that is the result of the first UIImage where one of its colors (e.g. magenta) is made transparent. How can I do this?
NOTE: I cannot make the color transparent in Photoshop, the UIImage is created on the fly by the user. I need to do the "postprocessing" on the phone itself, after the user is done "drawing" the image.
jubgb
I still do not know your version of Premiere Elements and your computer operating system, but here is a plan that would probably work for Premiere Elements 11, 12/12.1, and 13/13.1 on Windows 7, 8, or 8.1 64 bit.
But you say that you are starting with a black and white image. If you could start with the color version of the image, I think we have a promising path to have the fake blood appear in color on a black and white image.
This would be done by applying the Color Pass effect to the color photo version. Color Pass Effect is found under fx Effects/Image Control/Color Pass.
Then you would edit the Color Pass effect under Applied Effects Tab/Appied Effects Palette/Color Pass Panel expanded. But I find that the most effective editing of that effect is done using the Setup whose icon appear to the right of the Color Pass Panel.
Have you used the Color Pass effect before?
https://helpx.adobe.com/premiere-elements/using/effects-reference.html
I will offer how to suggestion for its use if interested. As for starting with the black and white, then I need to think about that some more.
ATR
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