A Massachusetts private told his parents that he considered "the object of our government as one worth dying to attain the maintenance of our free institutions which must of necessity result in the freedom of every human being over whom the stars and stripes wave.
Both ideas were introduced by scientists, advanced by politicians, popularized by the media, embraced as a moral necessity, resulted in severe consequences and eventually rejected as harmful hogwash.
Corresponding necessity results concerning scale-space representations of continuous image data based were then presented in Lindeberg (1996).
It should be emphasized, however, that the theoretical necessity results presented in this paper concern linear receptive fields.
Other necessity results concerning Gaussian and Gaussian derivative kernels have been presented by Iijima (1962), Koenderink (1984), Koenderink and Doorn (1992), Babaud et al. (1986), Yuille and Poggio (1986), Lindeberg (1990, 1994b, 1996), and Florack and Haar Romeny (1992).
This paper describes the basic structure of the necessity results concerning receptive field profiles regarding the mathematical foundation of the theory and outlines how the proposed theory could be used in further studies and modelling of biological vision.
The first necessity results in the Western literature concerning the uniqueness of the Gaussian kernel for generating a linear scale-space representation were derived by Koenderink (1984) based on the assumption of causality, which means that iso-surfaces in scale space should point with their convex side toward coarser scales.
Unusually, a brief paragraph in an account of the Anti-Rightist Campaign of 1957 describes widespread demonstrations, strikes and riots in late 1956, as people faced shortages of food and daily necessities, the result of forced state grain requisitions and failed industrial policies.
Each year, the EITC offers a vital cash infusion for an increasing number of working families and it enables them to purchase much-needed household goods, make home improvements and buy any other necessities -- resulting in a welcome boost to local economies.
Or maybe it was simply necessity that resulted in unorthodox grape blends like cabernet sauvignon and shiraz, one of Australia's noteworthy contributions to the world of wine.
