Pixel art

**Pixel art** is a form of digital art, created through the use of software, where images are edited on the pixel level.The majority of graphics for 8-bit and 16-bit computers and video game consoles, as well as other limited systems like graphing calculators, is pixel art.

Creating or modifying pixel art characters or objects for video games is sometimes called **spriting**, a term that arose from the hobbyist community.

## HIstory

The term *pixel art* was first published by Adele Goldberg and Robert Flegal of Xerox Palo Alto Research Center in 1982.The concept, however, goes back about 11 years before that, for example in Richard Shoup's SuperPaint system in 1972, also at Xerox PARC.

Some traditional art forms, such as counted-thread embroidery (including cross-stitch) and some kinds of mosaic and beadwork, are very similar to pixel art. These art forms construct pictures out of small colored units similar to the pixels of modern digital computing. A similar concept on a much bigger scale can be seen in the North Korean Arirang Festival.

There are some similarities of technique and style between pixel art and older artistic movements like Impressionism, Abstract Art, and especially Cubism

## Scaling

When pixel art is displayed at a higher resolution than the source image, it is often scaled using the nearest-neighbor interpolation algorithm. This avoids blurring caused by other algorithms, such as bilinear and bicubic interpolation—which interpolate between adjacent pixels and work best on continuous tones, but not sharp edges or lines. Nearest-neighbor interpolation preserves these sharp edges, but it makes diagonal lines and curves look blocky, an effect called pixelation. Thus, hybrid algorithms have been devised to interpolate between continuous tones while preserving the sharpness of lines in the piece; such attempts include the 2xSaI, Super Eagle, and the high-quality hqx algorithms.

## Uses

Pixel art was very often used in older computer and consolevideo games.With the increasing use of 3D graphics in games, pixel art lost some of its use. Despite that, this is still a very active professional/amateur area, since mobile phones and other portable devices still have low resolution and therefore require skillful use of space and memory. Sometimes pixel art is used for advertising too. One such company that uses pixel art to advertise is Bell. The group eboy specializes in isometric pixel graphics for advertising and has been featured in magazines such as *Wired*, *Popular Science*, and *Fortune 500*.

Icons for operating systems with limited graphics abilities are also pixel art. The limited number of colors and resolution presents a challenge when attempting to convey complicated concepts and ideas in an efficient way. On the Microsoft Windows desktop icons are raster images of various sizes, the smaller of which are not necessarily scaled from the larger ones and could be considered pixel art. On the GNOME and KDE desktops, icons are represented primarily by SVG images, but also with hand-optimized, pixel art PNGs for smaller sizes such as 16x16 and 24x24. Another use of pixel art on modern desktop computers is favicons.

Modern pixel art has been seen as a reaction to the 3D graphics industry by amateur game/graphic hobbyists. Many retro enthusiasts often choose to mimic the style of the past. Some view the pixel art revival as restoring the golden age of second and third generation consoles, where it is argued graphics were more aesthetically pleasing. Pixel art still remains popular and has been used in social networking virtual worlds such as Citypixel and Habbo, as well as among hand-held devices such as the Nintendo DS, Nintendo 3DS, PSP, PS Vita and Cellphones, and in modern indie games such as Hotline Miami and FTL: Faster Than Light
Image filters (such as blurring or alpha-blending) or tools with automatic anti-aliasing are considered by most advanced pixel artists as invalid tools for pixel art,as such tools calculate new pixel values automatically, contrasting with the precise manual arrangement of pixels associated with pixel art.