Tag: Photography

My Flying GigaPan

It took a couple of weeks for Jeffrey Warren’s message to sink in.  At first I thought his workshop on balloon aerial photography at the Fine gigapixel conference in November promoted a fringe pursuit – lofting cameras on tethered helium balloons to make better maps than were currently available.  But this pursuit emerged from the elegant convergence of modern camera technology and traditional lofting methods (balloons and kites).  It was now possible for anyone to make good, current “maps” from stitched, low-elevation vertical photographs.  Jeffrey is committed to inventing workarounds to the technological and financial obstacles that would otherwise put this process out of reach of the communities that might benefit from good maps.  This was the focus of his thesis at MIT, and he has had great success bringing communities together around these new map images and the experience of making them.  He has made the objective so compelling, and the process so simple and inexpensive that I soon realized I had to try it.

A clipboard-free zone

After it warmed up a bit yesterday, I tried out my new digital field protocol on a wildlife tracking transect behind my house. My goal was to record the identity, quantity, and location of large animal tracks in the snow which crossed the path I was walking (my “transect”). I am trying to develop a protocol for purely digital collection of these data.

Three types of data must be collected: date, location, and observation. The date (and time) is easy because most digital data has a time stamp. Collecting location data requires  a GPS enabled device. To collect the wildlife observation information in digital form requires manual data entry (keypad or touchscreen) or audio or video collection. I have seen some smart phone apps which could be bent to this purpose, but I don’t have such a phone, so the easiest route for me is audio, although this will require later translation to textual data.

[Update: I abandoned this three-device protocol after a few trials and now use only the GPS to make waypoints for each observation. The new method is described here.]

Linking the GPS data with the audio observations is the hard part. There are mature protocols for attaching GPS coordinates to image files, but not to audio files, although it should be easy to implement this on a smart phone. I used a digital photo as a link between the GPS data and the audio file. A key component of my protocol is a program which attaches GPS coordinates to photo files and can also associate an audio file with each photo. The program can also create a KMZ file or GIS shapefile which includes the georeferenced audio files. The program is RoboGeo which costs $80. This is the program that I use to georeference photos that I have taken while the GPS is recording a tracklog.

It’s a flock! A crowd! No, a herd!

A few days ago the Wired Science blog at Wired.com embedded the gigapans from the juried gallery show at the Carnegie Museum of Natural History. The same content also appeared at the Wired Science Japan site, so I used some online translators to see what had been written in Kanji about my hummingbird gigapan.

Here is the text that first appeared at the Wired Science blog:

Don’t let the 40 or so hummingbirds in this panorama fool you. There are really only two. Photographer Chris Fastie called it a “perplexing distortion of reality.” He took 78 photos over the course of a few minutes, then selectively merged them to capture multiple feeding and flying positions of the birds. “Rarely will the local male allow birds other than his mate to use a food source in his territory, so a feeding flock like this is impossible,” Fastie wrote on GigaPan.org.

This caption is a bit of a “perplexing distortion” because: (1) there are only 28 hummingbirds in the image, not “40 or so,” and (2) the 78 photos taken by the Gigapan imager did not include any birds.  An additional 28 photos of hummingbirds (and two of insects) were pasted onto the stitched panorama. This misinformation is partly my fault because my original caption at gigapan.org was not very explicit.  So the people hired to do the translation were already at a disadvantage, like the third person in a game of “telephone.”

Fine Conference

The Fine International Conference on Gigapixel Imaging for Science is winding down and I am really looking forward to the cocktail reception when today’s poster session ends. There is also going to be a raffle for a Gigapan Epic Pro, so there is still much to look forward to.

It has been a real joy to meet lots of people who I knew only through their work online at gigapan.org, many others whose work I hope to know soon, and all the media people who might be incorporating gigapans into their work. It was tremendous fun to see dozens of members of the gigapan community whom I met 18 months ago at my first Fine Outreach for Science Workshop. I have really enjoyed interacting with many people who are more obsessed with gigapixel imaging than I am.

The proceedings papers are now online at http://gigapixelscience.gigapan.org/. A higher resolution PDF of my paper is here. All the presentations were videotaped, so maybe they will be online at some point so I can see the concurrent talks I missed. [UPDATE: Video of my presentation at YouTube.]

The Prezis for my conference talk and the one for my Fine Outreach for Science talk are available online at Prezi.com. These are somewhat sparse in the sense that they are not very self-explanatory, but you might glean something from them if you attended my talks.   Here is the motion bubble chart of my gigapan history that I used in the FOFS Workshop. And here is the kml file of Miss Pixie so you can see the Google Earth verification of the map I made of her locations. Here is a pioneering paper by Adam Dick et al. about mapping trees from 360° panoramas.

Thanks to the GigaPan teams for the tremendous effort they put into this event. It was a huge success.

Ledge

I never heard the term “ledge” used as a synonym for bedrock before I moved to Vermont. But I once heard a guy in Maryland confirm it was bedrock by saying “Yeah, I think that’s a piece of the state.”

Here is a Google Earth KML file of two ledgey places I visited this week. One was made of Monkton quartzite with some dolomite strata and a rich, unusual plant community, and I accompanied some experts who identified three state endangered species. The other was made of Cheshire quartzite with somewhat less calcium available, and I recently found a lovely grove of pitch and red pines there. A new gigapan of that Pitch Pine-Oak-Heath-Rocky Summit community is included in the KML file.

You can see photos, GPS tracks, and the gigapan by downloading the KML file into Google Earth, or by clicking the link (below the break) to open it in a new browser window, or just use the embedded window at the bottom of the post (Your computer must have the Google Earth browser plugin installed).

Creepy and Cute

In Pittsburgh at the Fine International Conference on Gigapixel Imaging for Science in November, there will be a gallery show in the Carnegie Museum of Natural History of huge prints of eight gigapixel images. One of these will be a gigapan of my backyard patch of bergamot surrounded by an unnatural swarm of Ruby-throated Hummingbirds. You can see the gigapan here. The detail included below is about 4% of the area of the entire gigapan which will be printed about six feet wide.

The image integrates moments during three different visits by a male and female hummingbird.


Click the image to enlarge.