Final answer:
A typical raster image displayed on a computer screen utilizes Red, Green, and Blue (RGB) color channels. These primary colors are mixed in varying intensities by the individual pixels on the screen to produce a wide range of visible colors. The human eye perceives these colors based on the wavelengths that correspond to the RGB color model.
Step-by-step explanation:
A typical raster image to be displayed on a computer screen contains color channels known as Red, Green, and Blue (RGB). These primary colors are used in computer displays, digital cameras, and similar devices to create a wide range of colors. When we look at a computer screen with a magnifying glass, we might see individual pixels, and these pixels are composed of red, green, and blue sub-pixels. The combination of these colors in varying intensities produces the array of colors we see on the screen. The colors in the visible spectrum have specific wavelengths: Red is around 700 nm, Green is around 497 nm, and Blue is around 470 nm. The perception of color by the human eye is the result of the ratio of activity of our three types of cones that are sensitive to these RGB colors. Modern digital cameras and other imaging devices use red, blue, and green filters to accurately capture the color of the scene being photographed.