Illumination (image)

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Illumination is a concept in visual arts. By manipulating the lighting, an Artist can create a specific atmosphere for their work of art. Additionally, it can help the artist add depth to their work.^[1]

The illumination of the subject of a drawing or painting is a key element in creating an artistic piece, and the interplay of light and shadow is a valuable method in the artist's toolbox. The placement of the light sources can make a considerable difference in the type of message that is being presented. Multiple light sources can wash out any wrinkles in a person's face, for instance, and give a more youthful appearance. In contrast, a single light source, such as harsh daylight, can serve to highlight any texture or interesting features.

Caravaggio's early biographers, Giovanni Pietro Bellori and Joachim von Standrart both stated that Caravaggio worked in a dark room and illuminated his subjects with a single light source from above.^[2] Caravaggio's pioneering use of light and shade is known as chiaroscuro.^[3]

Processing of illumination is an important concept in computer vision and computer graphics.

• Chiaroscuro

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