Time-Lapsed National Park Webcams: Monitoring the Shutdown

On January 12, 2019, the ongoing federal government shutdown became the longest in United States history.  One of its casualties has been our national park system, if we’re to judge from reports of rampant litter, feces, and vandalism.  I was curious to see how the National Park Service air quality webcams have been faring. In…

Time-Lapse Video From National Park Service Webcams

Time-lapse imagery spanning multiple years is fairly uncommon, but some promising sources for it turn out to be hiding in plain sight. The National Park Service maintains a number of air quality webcam archives that now reach back in time as much as twenty years.  Each of the webcams is trained on a view within a…

Long-Term Time Lapses in 3D

In my last post, I described how to create decent long-term time-lapse stills and animations from photographs taken with an ordinary handheld camera.  Now I’d like to ratchet things up a notch by extending the same techniques into 3D: taking pairs of photographs repeatedly from the same horizontally separated spots day after day, auto-aligning them…

Averaging Time-Lapse Imagery

Lately I’ve been creating some long-term time-lapse stills and animations out of photos I’ve taken with an ordinary handheld camera.  In this post, I’ll explain what I’ve been doing to try to get decent-looking results.  I’ll also share a Photoshop script I cobbled together to automate much of the process, which would otherwise be prohibitively…