Which term describes the single value per pixel that encodes brightness and color in a digital image?

• A. Pixel Value
• B. Resolution
• C. Color Depth
• D. Pixel Density

Answer: (A)

The single value per pixel is what carries the image’s data at each point. That pixel value is the numeric data that represents how bright that spot is, and in color images it can be a packed value that includes the red, green, and blue components. So the pixel value is the unit of data for each pixel in the image.

Resolution describes how many pixels the image has in total, affecting detail. Color depth refers to how many bits are used to represent color per pixel, which sets how many distinct colors can be stored. Pixel density is about how many pixels fit into a physical length on a display or print.