Image transformation and interpolation from scratch
How do you rotate, translate, and scale an image while retaining information and—more importantly—sanity?
Joseph Long
Latest posts
Bicubic bake-off: comparing scikit-image, OpenCV, scipy.ndimage, and scipy.interpolate
Do all the ways to interpolate an image in Python produce equivalent results? The truth may surprise you!
A small collection of exoplanet detection illustrations
Sharing some of the figures I made to explain high-contrast imaging concepts for my thesis and defense.
Launching CLI apps from the macOS GUI
I want to use the command-line version of the ds9 image viewer on macOS from the command line without forgoing the ability to double-click to open FITS files. Mating command-line tools and Finder takes a detour through some very Apple-specific territory.
Finding a planet by subtracting starlight
Implementing the KLIP algorithm of Soummer et al. (2012) for starlight subtraction using basic NumPy. (Basically, the document I wish I had when I started working on high-contrast imaging.)