منابع مشابه
Simplest Color Balance
In this paper we present the simplest possible color balance algorithm. The assumption underlying this algorithm is that the highest values of R, G, B observed in the image must correspond to white, and the lowest values to obscurity. The algorithm simply stretches, as much as it can, the values of the three channels Red, Green, Blue (R, G, B), so that they occupy the maximal possible range [0,...
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The cone contrasts carrying different dimensions of color vision vary greatly in magnitude, yet the perceived contrast of color and luminance in the world appears similar. We examined how this perceptual balance is adjusted by adaptation to the contrast in images. Observers set the level of L vs. M and S vs. LM contrast in 1/f noise images to match the perceived strength of a fixed level of lum...
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This article discusses the relationship between lighting conditions of a natural scene and the reproduction of colors in a picture of that scene. Possibilities to use metadata concerning the origins of a picture to an advantage in color balance adjustments were studied at the Laboratory of Media Technology (Helsinki University of Technology). A prototype application for estimating the prevailin...
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A chaotic attractor has been observed with an autonomous circuit that uses only two energystorage elements: a linear passive inductor and a linear passive capacitor. The other element is a nonlinear active memristor. Hence, the circuit has only three circuit elements in series. We discuss this circuit topology, show several attractors and illustrate local activity via the memristor’s DC vM − iM...
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[0.1] Questions about integers and primes It is easy to formulate questions about integers and primes, though not easy to distinguish those questions that have deeper meanings. More than 2000 years ago, contemporaries of Euclid knew that there are infinitely-many prime numbers. Quantifying the distribution of primes is still essentially an open question! Chebyshev (1848-50), Riemann (1857-8), H...
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ژورنال
عنوان ژورنال: Image Processing On Line
سال: 2011
ISSN: 2105-1232
DOI: 10.5201/ipol.2011.llmps-scb