Typically, it’s difficult to fit Yosemite's wide panoramic view into a photograph, but a 3.8-gigapixel photographic map of Yosemite Valley reveals nature’s beauty in one photo stretching more than 50 feet wide. The Yosemite Panoramic Imaging Project, a partnership between the National Park Service and Los Angeles-based xRez Studio, has. May 15, 2015 I have recently either upgraded to Yosemite 10.10.3, or built a new fresh Yosemite 10.10.3 system (tried it on two different computers) and I am finding that Silverlight appears to be totally 100% dead. Flash (ugh!) and Java both work fine on the same systems in the same web-browsers including Safari 8.0.6. Jan 12, 2010 Yosemite Valley experiences numerous rockfalls each year, with over 600 rockfall events documented since 1850. Due to the pulverization of the rockfall mass, evaluating and quantifying rockfall characteristics has proved challenging without any high-resolution baseline imagery of the Valley walls, which could act as a useful datum for before/after comparisons.
Yosemite Valley experiences numerous rockfalls each year, with over 600 rockfall events documented since 1850. Due to the pulverization of the rockfall mass, evaluating and quantifying rockfall characteristics has proved challenging without any high-resolution baseline imagery of the Valley walls, which could act as a useful datum for before/after comparisons. In 2008, The Yosemite Extreme Panoramic Imaging Project, a partnership between geologist Greg Stock, Ph.D. of the the National Park Service and xRez Studio, set out to do so by creating an unprecedented documentation of Yosemite Valley’s granite walls by shooting 10,000 images concurrently over sixteen miles of the valley walls. Base technology used included gigapixel panoramic photography, LIDAR-based digital terrain modeling, and three-dimensional computer rendering. Key sponsorship was provided from Microsoft Live Labs and The Yosemite Fund, and additional sponsors and donors included IVRPA, Canon, Bogen Imaging, LowePro, GigaPan, Autodesk, Wavgen, and Peace River Studios.
The primary gigapixel capture was accomplished by 20 separate photographic teams shooting from key overlapping locations throughout the valley, amounting to 36,000 vertical feet of trail ascended. The shots were taken simultaneously in order to ensure uniform lighting, with each team taking over 500 overlapping shots from each vantage point using an accessible Gigapan device with Canon G9 cameras. Each team’s shots were later assembled with PTGui into 20 separate gigapixel panoramas, viewable here. In addition, all 20 gigapixel panoramas were projected onto a 1-meter resolution digital terrain model in Maya 3D animation software, unifying 16 miles of Yosemite’s walls into 2 single vertical orthographic views. The resulting images reveal the complex geologic interrelation of Yosemite Valley’s monuments in very high resolution and yields a unique, non-perspective elevational view of the valley walls, a first in landscape photography.
In addition, a hang gliding flight was contracted to act as a photographic survey, the glider equipped with 3 time-lapse cameras which provided a point cloud data representation of the valley walls through use of Microsoft Photosynth. The results can be seen in the Siggraph 2009 course on “Computation & Cultural Heritage” Several major rockfalls have already occurred since the project’s completion, and repeat photography of these areas has clearly delineated the rockfall source areas and failure dynamics, ultimately calling for the closing of 300 structures in Camp Curry. Thus, the imagery has already proven to be a valuable tool for monitoring and understanding rockfall in Yosemite Valley, and ultimately providing further safety for the public. It also shows the possibilities of the quality of information a photographic image, enabled with powerful new imaging technology, can provide for the earth sciences.
[vimeo]http://www.vimeo.com/6044034[/vimeo]
[vimeo]http://www.vimeo.com/6044034[/vimeo]
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update: The gigapixel spherical image that inspired the parks to partner with us on this project is now a free App called “Yosemite Spyglass” in the iPad App Store.
LINK to 45 Gigapixel Silverlight Page of Project Results (zoom in and out of all images w/ mousewheel):
LINK to Silverlight Orthographic View of North Elevation (zoom in and out of image w/ mousewheel):
LINK to Photosynth Hang Gliding Demo (Use the “p” key 2x to turn on 3d point cloud)
LINK to National Parks Traveler Article
Until now, monitoring rock-fall activity has been difficult without a high-resolution basemap image of the Valley walls. Geologists typically would gather geologic data of rock faces by climbing cliffs, which poses obvious dangers not inherent in studying a photo from inside an office. The Yosemite imaging project creates an extremely detailed snapshot in time of present-day geologic conditions and allows for a detailed examination of the cliffs without having to climb them.
“Every rock-fall event begins with the basic documentation: Where was it, how big was it, and why did it happen? Geologists have asked these questions about rock falls in Yosemite for the past 150 years, but now we’re doing it now with a precision that earlier scientists couldn’t have dreamed of,” said Greg Stock, Yosemite National Park geologist. “Sometimes these photos are the only way of ascertaining the location and size of the fall. We can immediately go to the photograph, zoom in on it and see what the mass of rock looked like before it failed. That can tell us a lot about why it failed.”
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To execute the intricate photographic process, technological devices took to land and air. Laser-mapping airplanes flew back and forth over the Valley collecting LiDAR (Light Detection and Ranging) data—creating a digital topographic model of the land’s surface. Then, on a single day in May 2008, photographic teams positioned themselves on the landscape to shoot images simultaneously to ensure uniform lighting. Each team produced 500 overlapping shots from a single vantage point, and these images were assembled into 20 high-resolution panoramas. These panoramas were then projected onto a one-meter resolution digital terrain model produced from the LiDAR data in 3-D rendering software. This graphic process unified Yosemite Valley’s walls into a vertical view that was then geographically corrected again for the two-dimensional photography’s limitations. In the final product: A map viewer gets the feeling of taking a 3-D computer flight over the Valley’s eight-mile width.