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Understanding how color is created in digital images

Understanding how color is created in digital images - Illustrator Tutorial

From the course: Cert Prep: Adobe Certified Associate - Illustrator

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Understanding how color is created in digital images

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- [Instructor] In this movie, we'll take a look at some key concepts for how color is created in digital images. And we'll begin with the concept of a channel. A channel in a digital image contains information representing just light and dark measurements. These are also known as luminance values, which range from white to black. In an eight bit channel, there are 256 possible luminance values, ranging from zero, which is black, to 255, which is white. A true grayscale files is composed of just one eight bit channel. That's why it can only represent lights and darks. Other images may be composed of multiple channels which combine to produce a full range of colors. For example, RGB images are composed of three channels, red, green, and blue light. These are the primary colors in the RGB color model. And RGB is also known as an additive color model because it creates colors by adding red, green, and blue light together. That's why RGB is used to represent colors on TVs and computer…

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