You can remove the background or backdrop behind an object in a picture with a process called background removal. This process can remove the background in its entirety, or you can choose sections or parts that you desire from a backdrop to be removed.
Background removal once was an arduous process. Now with the arrival of digital photography and all of its technologies it is actually simple.
In those pre-digital days background removal was done in the darkroom with the essential ambient conditions to include the correct room temperature. The film was submerged in a working solution and had to be constantly monitored. Background blur and decrease in resolution was achieved through overexposure of the film to the solution.
Today, background removal is possible using any digital photo editing software like Image Manipulation Program, GNU, or GIMP. GIMP is a special kind of graphics editing program able to support some types of object-based (or vector) graphics.
It is not necessary that the digital photo editing software used for background removal be able to support all types of object-oriented graphics. The advantage in using GIMP of course, is that it enables easy vector to raster conversion.
Other popularly used raster graphics editors and digital photo editors will also work just fine. Most digital photo editors have a number of plug-ins which can modify the background in different ways. Plug-ins are computer programs with highly specific purposes. Most sophisticated photo editing programs use special purpose plug-ins and will perform background editing and removal based on different criteria.
Objects without backgrounds can be used in several different ways. They can be placed in a new backdrop and in different situational contexts. For eg.: a couch in furniture showroom could have the furniture showroom replaced with an office. The object can be moved around any which way and it's alignment w.r.t the new background can also be changed.
An object can gain a new sense of purpose without changing itself at all. It retains all of its properties like shape and size but becomes moldable to individual usage.
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