An image is a visual representation. An image can be two-dimensional, such as a drawing, painting, or photograph, or three-dimensional, such as a carving or sculpture. Images may be displayed through other media, including a projection on a surface, activation of electronic signals, or digital displays; they can also be reproduced through mechanical means, such as photography, printmaking, or photocopying. Images can also be animated through digital or physical processes.
A synthetic-aperture radar image acquired by the SIR-C/X-SAR radar on board the Space Shuttle Endeavour shows the Teide volcano. The city of Santa Cruz de Tenerife is visible as the purple and white area on the lower right edge of the island. Lava flows at the summit crater appear in shades of green and brown, while vegetation zones appear as areas of purple, green, and yellow on the volcano's flanks.
2D image
Drawing is a visual art that uses an instrument to mark paper or another two-dimensional surface. The instrument might be pencils, crayons, pens with inks, brushes with paints, or combinations of these, and in more modern times, computer styluses with graphics tablets.
Leonardo da Vinci's Vitruvian Man (c. 1485) Accademia, Venice
Madame Palmyre with Her Dog, 1897. Henri de Toulouse-Lautrec
Galileo Galilei, Phases of the Moon, 1609 or 1610, brown ink and wash on paper. 208 × 142 mm. National Central Library (Florence), Gal. 48, fol. 28r
Antoine Watteau, trois crayons technique
