Understanding the Trimap Technology and Tools

Mask AI allows you to create tricky masks in record time thanks to our intuitive machine learning technology and trimap technique.

Trimap Concept and How it Works

Introduction to the Tools

The Auto Trimap

Quick Tips for Creating a Trimap

The Trimap Concept and How it Works

Mask AI streamlines the masking process using a new innovative trimap technique. The trimap is made up of three tones: green, red and blue. Users are able to quickly define the elements in their image that they want to keep using green; elements that they want to cut using red; and elements that they want Mask AI to compute using blue. Selections are made using the brush tools and then Mask AI is able to analyze the user-made selections and isolate the image subject with precision. 

Introduction to the Tools


Simply paint a blue line around the edges of what you’d like to compute. The best part is, you don’t have to be perfect — just keep a little bit of the subject and the immediate area you’d like to mask inside of it. Our technology will do the heavy lifting.

Select the red fill button to fill the area you’d like to remove and fill any areas to keep with green. Select either AI or Contrast mode to generate your mask! AI is the ideal mode for more complex masking, like trees, hair, fur, or any image containing a lot of details. This mode will be slightly slower. The Contrast mode is a faster, rougher mode, but may perform better in images with little contrast separation between foreground and background.


Smart Brushes

Our smart brushes (Cut, Keep, and Compute) utilize our technology and enable you to make clean and accurate refinements without the pressure of painting perfectly. Our machines will make the decisions for you and speed up your workflow!

The Auto Trimap

With the new “Auto” button, you can let Mask AI auto-detect your subject and create a trimap for you as a quick starting point!  The Auto button is designed to save you even less input time and works great with so many visual options (people, cars, animals, etc.), but it might not be the right solution for every subject, so be sure to check over it before hitting compute!


Quick Tips for Creating a Trimap

Mask AI will make lots of decisions for you, but it needs your help to work efficiently. This works best if Mask AI gets the most accurate usage of red, green, and blue (cut, keep, and compute). Red and green add information, while blue uses it. For example, a small dot of green within an object (like the stem of a flower) you indeed on keeping versus a whole line of blue will go a long way. Similarly, a small line or dot of red on an area you want to remove (like the area between flower petals) will also help the program make more decisions!

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