Tag: conversion

Jul

Unwrapping flowers

Kyle McDonald and Golan Levin used some magic software on images of some unsuspecting flowers. They sliced a flower from the centre to its petals. Then grabbing the cut ends, they bunched the petals together and then dragged them out like playing an accordion. Basically, they were doing some polar and Cartesian conversion on the […]

Oct

The math behind 360 degree fisheye to landscape conversion

I wrote an article to convert a 360 degree fisheye image to a landscape view some time ago. I also realised I didn’t explain the math very much, mainly because I thought it’s fairly obvious. On hindsight, it doesn’t seem obvious. My apologies. Commenter Eric pointed out a math technique called linear fractional transformation. It’s […]