In some cases, we need to remove the background of the main character in a photo (that is, separate the wanted object from the photo), then use it for many other purposes. Examples include uploading product images to eBay, preparing photos for a job hunting or online dating website, placing it in other backgrounds, creating photo collages, etc. For similar needs, almost all of us know that Adobe Photoshop is specially designed to do just that. But most people don't want to learn it for this unless they are doing it for a living.