How-To Geek on MSN

How to Use the UNIQUE Function in Microsoft Excel

Microsoft Excel's UNIQUE function does exactly as its name suggests—it extracts unique values from an array. In other words, ...
MUO on MSN

Old Excel functions you should stop using (and what to replace them with)

VLOOKUP has been the go-to function for looking up data in Excel for years, but it comes with limitations. You can only ...
IEEE

Correcting Optical Aberration via Depth-Aware Point Spread Functions

Abstract: Optical aberration is a ubiquitous degeneration in realistic lens-based imaging systems. Optical aberrations are caused by the differences in the optical path length when light travels ...