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 tileable.
The Resynthesizer gimp tool can be used to give a texture transfer from two images.