Color Representation
Explore how digital images use pixels as the smallest unit of color representation. Understand how RGB channels combine at different intensities to produce colors, black, white, and grayscale shades. Gain knowledge of raster images and how computer screens display colors through varying pixel values.
What is a pixel?
A pixel is the most basic unit in digital graphics. It is represented as a dot or a square on a monitor display screen that can represent only one solid color. A one-bit pixel, as shown in the figure, can take only two values, 0 or 1.
That is how we can assign different numbers to each color in our palette and thus, represent the dot using a number. Naturally, we’d require more bits to do that.
A raster image
The basic unit that we started with was the dot. So, if we encode a sequence of rows and columns of dots, each with ...
