In this tutorial, you are going to learn the methods to change the background of an image. If you want to try this then this tutorial will definitely help you with some simple steps. So follow these given steps below.
Open an image: First you have to open an image in which you want to change the background image. I have selected an image of two person standing in a garden.
Selecting: Make selection by polygonal lasso tool (L key) of the image which you want to add.
Inverse: After selection, go to select menu and click on inverse and press DEL key to remove unselected part of image as you have to add another background image.
Open another image: Now open another image to add as background image. Here, I have taken an office image.
Select Background: Again make selection of the image and go to select menu, click on inverse to select background as I have selected here.
Copy another image: Copy the image you want to make as background. Select all and (CTR + A) and copy (CTR + C)
Add Background image: Now, go to edit menu and click on paste and your file will spread into the selected portion..
Your final image will be this.
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