منابع مشابه
Reconstruction of Convex Bodies from Brightness Functions
Algorithms are given for reconstructing an approximation to an unknown convex body from finitely many values of its brightness function, the function giving the volumes of its projections onto hyperplanes. One of these algorithms constructs a convex polytope with less than a prescribed number of facets, while the others do not restrict the number of facets. Convergence of the polytopes to the b...
متن کاملIndividual differences of the contribution of chromatic channels to brightness.
Perceived brightness is considered to be a combined consequence of outputs of the luminance channel and the chromatic channels in the visual system. The differences of logarithmic spectral luminous efficiencies between heterochromatic brightness matching and flicker photometry that were obtained from 16 subjects were examined by using principal component analysis. The luminous-efficiency differ...
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1. I N T R O D U C T I O N A well-known Faber theorem asserts that given any sequence Pn of projections from C ([0, 1]) onto the space q3n of polynomials of degree n 1, there exists a continuous function f such that Pn f does not converge to f in the uniform norm. In particular, let A n : 0 < t~ n) < t~ n) < . . . < t (n) < 1 be a sequence of partitions on the interval [0, 1]. Let L (An) : C ([...
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Reconstructing Shapes from Support and Brightness Functions
متن کاملMulti-camera Matching using Bi-Directional Cumulative Brightness Transfer Functions
The appearance of individuals captured by multiple non-overlapping cameras varies greatly due to pose and illumination changes between camera views. In this paper we address the problem of dealing with illumination changes in order to recover matching of individuals appearing at different camera sites. This task is challenging as accurately mapping colour changes between views requires an exhau...
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ژورنال
عنوان ژورنال: Perception & Psychophysics
سال: 1966
ISSN: 0031-5117,1532-5962
DOI: 10.3758/bf03207815