In computer graphics and digital imaging, image scaling refers to the resizing of a digital image. In video technology, the magnification of digital material is known as upscaling or resolution enhancement.
Low-quality 270×368 pixel photograph of John Howard Lindauer, scanned from a State Legislature directory
The same image enhanced and upscaled to 2160×2944 pixels by MyHeritage's Photo Enhancer
Vector graphics are a form of computer graphics in which visual images are created directly from geometric shapes defined on a Cartesian plane, such as points, lines, curves and polygons. The associated mechanisms may include vector display and printing hardware, vector data models and file formats, as well as the software based on these data models. Vector graphics are an alternative to raster or bitmap graphics, with each having advantages and disadvantages in specific situations.
A free software Asteroids-like video game played on a vector monitor
Original reference photo before vectorization