The Isolation of Digital Imaging: Masking Tools
Now that you have an understanding of alpha channel data and how it can be used in a digital image compositing pipeline, as well as how to use it to “store” digital image objects, the next logical step is to learn how to use masking tools to extract subject matter from your digital images. This is called “pulling a mask” in the digital image compositing industry.
Photoshop and GIMP have a number of masking tools that can be used to achieve this pixel extraction end result. We will be looking at some of them in this chapter along with some of the approaches and work processes that can be ...