There are several image editing software applications that can be used to remove the lines from a background image. Some popular options include:
1. Adobe Photoshop: This is a powerful image editing software that can be used to remove lines from a background image. It has a wide range of tools and features that can be used to achieve this result.
2. GIMP: This is a free image editing software that is also very powerful and can be used to remove lines from a background image. It has a similar range of tools and features to Photoshop.
3. Canva: This is a user-friendly image editing software that is often used for creating digital designs. It has a simple interface that can be used to remove lines from a background image.
4. iMovie: This is a part of Apple's iPhone and iPadOS devices, it can be used to remove lines from a background image in a video editing process.
All of these applications have different features and tools that can be used to remove lines from a background image, so it's important to carefully review the user guide or教程 for each one to learn how to do this.