What term refers to a video image in pixel format that can be stored in the computer memory for processing?

• A. Digital image
• B. Analog image
• C. Raster image
• D. Vector image

Answer: (A)

Images that are stored for processing in a computer are in digital form, meaning they are represented as discrete picture elements (pixels) and saved as binary data in memory. This pixel-based arrangement lets the computer manipulate the image frame by frame, apply processing algorithms, enhance details, measure features, or compare with other images. A raster image is a specific type of digital image dominated by a grid of pixels, but the general term for any video image stored in pixel format and ready for processing is digital image. Analog images are continuous signals and aren’t stored as discrete pixel data, while vector images are described by geometric equations rather than a pixel grid, so they aren’t stored as pixel data.