Erase the white background

[22padrinos (Luis Ledesma)]

Hello to all, I would like to ask for your help to find a solution to the following problem I have. The problem is that at the time of using the command ImageCompose the sign that stands on the top of the image has a white background and that is what I would like to delete, that only appear green letters on the image, and try to use Background-> None, but I failed to erase the white background, I hope that someone can guide me to solve my problem , thanks in advance.

Here is a picture of the problem that I have.

[mikaelf (Mikael Forsgren)]

Hi Luis if youuse Graphics[] instead of rasterizing the text you should get you result you were aiming for:

im = ExampleData[{"TestImage", "Lena"}];
ImageCompose[im, 
 Graphics[Text[Style["SOLVED", "Title", Green, Bold, 70]]]]

Hope this helps!
/Mikael
[1]: http://community.wolfram.com//c/portal/getImageAttachment?filename=Untitled-1.jpg&userId=24141

[mthiel (Marco Thiel)]

Alternatively, you can remove the background:

img = ExampleData[{"TestImage", "Lena"}];
ImageCompose[img, RemoveBackground[Rasterize[Style["UNSOLVED", "Title", Green, Bold, 80]], White]]

Cheers,

Marco

[22padrinos (Luis Ledesma)]

Thank you very much for your help @Marco Thiel and @Mikael Forsgren, that’s exactly where needed, greetings Luis