Description: I made this for fun in Java. I did not use any librarys. Pure Java. Around 95% accurate.

Side Note: Yes I am Aware Of My Spelling Mistakes With The Word Recognition

How It Works

First, You Put An Image (Named Face.png) Into The Resources Folder. That Image Then Gets Scaled Down To The Size Of A Reference Image.
From There, The Pixels Of Both Images Are Compared. If The Face.png Image Shares 78.5% (Or More) Pixels With The Reference Image, It Will Detect A Face.
Since This Has 0 Machine Learning or Artifical Intelligance, It Will Not Be Too Accurate At Times. It Also Requires (preferably) A Closeup Of A Face/Object For More Accurate Results.

Known Errors