When removing objects from a photo in Photoshop, how does Photoshop recreate what is behind the person so accurately?
In: Technology
Well, for starters, there’s no “one way” that backgrounds are recreated. The two methods people generally use are content aware fill, which let’s the computer analyze the area around that which is being removed and average the results and look for patterns. So if there’s a line going into one end and out the other, the computer can usually guess the line continues through the image. This is generally only used for small spots on uniform backgrounds though, like removing acne
For larger, more professional edits, you’re gonna use a clone/stamp tool, in which you actively choose other parts of the imagine and cut and paste them into place. This is human driven, not AI driven. You can then adjust the “feather”, which is like a gradient/fade that lets it blend a little easier.
Most areas are a box with the same texture or stuff inside it. So you just take the stuff from the area you can see and put it over the area you couldn’t see.
Photoshop has a brush that you pick a starting point and it pains from the source relative to that spot as you drag. Then you have to touch it up by manually painting.
New Photoshop can use “Content aware fill” to pick and do this automatically, I assume with edge detection and haar cascades, but it doesn’t work perfectly in all situation and you’d going to be adjusting it, but a lot of “Photoshop Battle” stuff is just making it look somewhat realistic and then putting something over it.
For the most part it doesn’t – the artist has to manually clone it in from other parts of the image. However, these days there’s also AI object removal that works by having been fed millions of images. It can then look at the current image and say “ok, when I’ve seen this before it’s looked like *this*…”
It doesn’t – you have to build the image yourself on another layer (or layers, built one on the other in a particular sequence)(. Or, you can use several different tools to change an image (cut and paste, cloning tool, eraser, filters, blurring, etc.)
Images are basically information, and you have to add, subtract, and manipulate the information you have in order to create a new image. It won’t ‘make itself’.
That’s why being good at PS is an art that takes practice, and why a good PS person can spot a bad edit a mile away. 🙂
Mesmerized by an r/interestingasfuck video today?
[https://www.reddit.com/r/interestingasfuck/comments/jsuddp/how_people_from_a_scene_can_be_photoshopped_away/](https://www.reddit.com/r/interestingasfuck/comments/jsuddp/how_people_from_a_scene_can_be_photoshopped_away/)
Note that the video is a super fast time-lapse – it takes a lot longer than it seems to get it to look good! Also, you can’t really see the results up-close. It probably doesn’t look that great up close (or maybe it does…I can’t see it!)
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