Modifier le détourage automatique

Hi Seb,
Welcome to the forums, feel free to ask questions - it is what this community is for.

As you have found, select subject rarely makes a perfect selection and it is common to follow that with additional steps.

A first quick way make those following adjustments is to open the Select and Mask workspace and start at the top left tool (quick selection). You can add to your selection by brushing and take away by holding Alt and brushing.
I would then move on to the third tool down (the second is for refining soft areas such as fur and hair) where you can paint directly to add to the selection, and again hold down Alt to subtract from it.

When you are happy you can choose to output as a Selection or as a Mask or even a new Layer with a mask before clicking OK.

Dave

Hello everyone

I used the automatic subject selection function in Photoshop, but then I can't find how to modify the line…

Would you please help ?

Thx !