منابع مشابه
How to measure diagnosis-associated information in virtual slides
The distribution of diagnosis-associated information in histological slides is often spatial dependent. A reliable selection of the slide areas containing the most significant information to deriving the associated diagnosis is a major task in virtual microscopy. Three different algorithms can be used to select the appropriate fields of view: 1) Object dependent segmentation combined with graph...
متن کاملHow To Color A Map
We study the maximum differential coloring problem, where an n-vertex graph must be colored with colors numbered 1, 2...n such that the minimal difference between the two colors of any edge is maximized. This problem is motivated by coloring maps in which not all countries are contiguous. Since it is known that this problem is NP-hard for general graphs; we consider planar graphs and subclasses...
متن کاملHow to color shift hypergraphs
Let g(k) denote the minimum integer m so that for every set S of m integers there is a k-coloring of the set of all integers so that every translate of S meets every color class. It is a well known consequence of the Local Lemma that g(k) is finite for all k. Here we present a new proof for this fact, that yields a very efficient parallel algorithm for finding, for a given set S, a coloring as ...
متن کاملThe Application of Diazotype Color Films to the Production of Projection Slides of Electron Microscopic Material
In general, in the production of projection slides, one is limited to the use of s tandard lantern slide plates. If the original electron micrograph negatives vary in contrast, it is often difficult to produce, within an acceptable range of density, a series of slides for projection. In an a t tempt to overcome this difficulty, diazotype color films have been tested as an alternative to the sta...
متن کاملColor Vision: How the Cortex Represents Color
Our understanding of how we see color has benefited from the long tradition of visual psychophysics. More recently, models and methods from psychophysics are guiding modern neuroimaging experiments on color vision. Combining the two techniques can lead to discoveries that neither can make alone.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Scientific American
سال: 1893
ISSN: 0036-8733
DOI: 10.1038/scientificamerican03111893-153a