This tool named Resynthesizer is a Gimp plug-in for texture synthesis.
- removal of objects
- making more texture
About then you can use for large images: Script-Fu – Enhance -Smart remove selection… ().
You can also use this tool with another options window : Filters – Map – Resynthesizer
About making textures, Resynthesizer can be used to make more of a texture, and can make the resulting image tilable.
The Resynthesizer gimp tool can be used to give an texture transfer from two images.