Contour

Definition and stakes

Portrait of John Ruskin John Ruskin,  Modern Painters, Volume 4 (of 5…

“ The second, that if the contour be observed from a nearer point, or looked at when it is dark against the sky, it will be found composed of millions of minor angles, crags, points, and fissures, which no human sight or hand can draw finely enough, and yet all of which have effect upon the mind. ”
Source: Gutenberg

Anonymous,  The Philosophical Review (1892)

“ Other effects of contrast are light-induction — so far known as accompanying successive and contour contrasts — and, under some circumstances, the repression of an otherwise perfectly apparent difference. The absolute intensities and colors of objects are untrustworthy factors of the visual percepts, and it is to contrast that we owe the recognition and determination of the objects of the external world. ”
Source: Wikisource

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