18th February 2014
Photoshop Research
After further research into using Green-screens and Chromakeying within photo editing I thought it would be best to do a post on exactly what I learned.
Both green and blue screens are used in photo editing amongst many other colours depending on the purpose. This is as the ‘keying’ process used to isolate a single colour or brightness in a picture works best when the colour you want to key out is only on the bit you want gone. You are then able to make that specific part transparent, allowing another image to show through the keyed out areas.
To remove the background using a green screen I needed to make sure the model was not wearing any green or parts or all of the green on her would disappear with the background.
Green and blue are the most commonly used colours as they are the furthest colour away from the human skin tone so it won’t take out half the persons face along with the background. Another reason it that they are both bright colours that most people don’t wear on a regular basis. Hence I chose to buy a green screen as me and my friends personally don’t own any green clothes however we do own a few shades of blue throughout our wardrobe. Green screens are also cheaper to light.
