Ikeuchi, K. 1984. Shape from regular patterns. J. of Artificial Intelligence, 22:49--75.  Home/Search   Document Details and Download   Summary   Related Articles

....1990) 2. It makes only partial use of available information, e.g. it does not exploit the change in size of the projected texture. The other assumption which has been used in the literature is that of first order homogeneity, i.e. that the texture pattern has constant area or density (Ikeuchi, 1984; Aloimonos, 1988; Kanatani and Chou, 1989; Super and Bovik, 1995; Marinos and Blake, 1990) This is a reasonable assumption for natural textures, and our first criticism does not apply. However, this assumption is too weak it fails to exploit the systematic change in shape of the texture ....

....the texture elements due to varying amounts of foreshortening. For this reason, the use of a maximum likelihood estimator does not guarantee that we are making the best possible use of the data the model has ignored an important and informative constraint in the physical situation. In some work (Ikeuchi, 1984; Aloimonos, 1988) the shape from texture problem is treated as locally underdetermined and a regularization assumption introduced to arrive at a shape estimate. We regard the use of a regularization term as inappropriate until the well founded physical constraints have been fully exploited. Our ....

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Ikeuchi, K. 1984. Shape from regular patterns. J. of Artificial Intelligence, 22:49--75.

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