Veranstaltungen
Veranstaltungen der Fakultät für Mathematik
Big data through the looking-glass of super-resolution, als mathkol
Termin
26.01.2018, 14:15 Uhr -
Veranstaltungsort
614
Abstract
Big Data have been around since Big Bang and the beginning of life, but
not yet explored till recently. In addition, data are continually being generated
in rapidly increasing volumes and complexity, everywhere, and by just about
everything around us. The understanding of Big Data is indeed a most
challenging endeavor to the communities of mathematicians, statisticians,
engineers and scientists alike.
So how big is big? For instance, just consider the molecules that make up
the human body: there are 37.2 trillion living cells, and over 600 billion
molecules in each cell, including 92 strands of DNA double helix and 8
million RNA strands, for a total whopping number of over
2·1025;
and
there are roughly 10 trillion galaxies, and on the average, about 100 billion
stars in each galaxy, or
1024
stars in the universe. These are big
numbers! On top of these huge numbers is data complexity, in that when
considered as point-sources, data change in time.
For imagery capture, the recent exciting advancement of fluorescence
light microscopy, with the capability of viewing well below the hundredth
nanometer scale for studying molecular activities, are now available,
overcoming the Rayleigh criterion on diffracted light barrier. This was coined
``super-resolution by the biology and bio-chemistry communities. For
observatory astronomy, the forth-coming space telescope, called James
Webb (or JWST) will be launched in October, 2018, with the capability of
seeing`` the earliest stars and galaxies and to looking deep into nearby dust
clouds to study the formation of stars and planets.
In this talk, we will describe the background and development of this
fascinating subject and present two current mathematical approaches to
super-resolution of light point-sources, including my own recent joint work
with Hrushikesh Mhaskar, and beyond.
Vortragende(r)
Prof. Dr. Charles K. Chui
Herkunft der/des Vortragenden
Hong Kong Baptist University / Stanford University