Crop a shape in an image

Hello, I need help to crop a shape in an image and especially to save the cropped part. Here is an example of what I would like.

3 answers

  1. What software do you have?

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    1. Openoffice, I downloaded Photofiltre but I still can't crop the shape and retrieve the cropped part.

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      1. It looks like you want to recover the cutout, maybe to make a stencil...?
        Personally, I would do a vectorization in Inkscape.
        https://inkscape.org/fr/doc/tutorials/tracing/tutorial-tracing.html
        Once vectorized, your image will be made up of surfaces that you can move as you wish, and then save again as an image for example.https://www.youtube.com/watch?v=xAHSGT0D-qg&ab_channel=imppao

        Vectorization works very well for this kind of image, but it's trickier if it is highly colored.

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