HAO Colloquium - Craig DeForest, SWRI

Analyzing Images is Harder than You Think      

Image analysis is a mainstay of solar physics.  Images, spectral images, and polarimetry are central to the corpus of data that we use to understand the Sun.  These kinds of data have many advantages:  they are information-rich, viscerally compelling, and intuitively obvious to anyone who has eyes.   But image analysis, while disarmingly easy at a superficial level, is surprisingly difficult to get right.  Visual cues that are familiar from everyday experience can divert us to wrong interpretations; subtle linkages create surprising artifacts (for example, resolution effects can mimic scale height variations in the corona); and image data are often counterintuitive to interpret.  I illustrate, through cautionary examples, several subtleties of image analysis, advocate for rigor in image analysis, and describe some underappreciated tools and techniques that can help you improve your science.

Building:

Room Number: 
2126
Will this event be webcast to the public by NCAR|UCAR?: 
Calendar Timing: 
Wednesday, October 16, 2019 - 2:00pm to 3:00pm

Posted by Sheryl Shapiro at ext. 1567, sheryls@ucar.edu

Quick Facts

NCAR is managed by the nonprofit University Corporation for Atmospheric Research on behalf of NSF and the UCAR university community.

  • NCAR is not a federal agency and its employees are not part of the federal personnel system.
  • Our activities complement those of the federal agencies and we work closely with them.

More about us

Random Profile

Soft Eng/Prog III