Discovering the Gale Crater
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Transcript of Discovering the Gale Crater
![Page 1: Discovering the Gale Crater](https://reader035.fdocuments.us/reader035/viewer/2022062523/58ec4b1a1a28ab086d8b46d1/html5/thumbnails/1.jpg)
Discovering Gale Crater
By: AJ Abell
![Page 2: Discovering the Gale Crater](https://reader035.fdocuments.us/reader035/viewer/2022062523/58ec4b1a1a28ab086d8b46d1/html5/thumbnails/2.jpg)
First Things First• LA Times
– How can we tell VR Stories? Especially in 3D?
• Should users be guided through the crater or able to explore on their own? – Thought people wanted both
• Should we use text in the tour and, if yes, how much? – Long text is hard to read and hard to render in a 3-D scene. Kept it
short
• So how to deliver information about what is being viewed? – Decided to do narration using NASA's Fred Calef
![Page 3: Discovering the Gale Crater](https://reader035.fdocuments.us/reader035/viewer/2022062523/58ec4b1a1a28ab086d8b46d1/html5/thumbnails/3.jpg)
Choosing A Platform
• App?– Unnecessary barriers of entry– Anyone with computer can use it• More immersive experience with Oculus/Cardboard
• All built with open Web source
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Crater Facts
• Mars• Layered Mountains – 3 miles high• 96 miles in diameter• Can go into history – any water in there?
Bacteria?
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Pictures • Digital elevation model of Gale Crater. Brighter
values are higher elevations.
![Page 6: Discovering the Gale Crater](https://reader035.fdocuments.us/reader035/viewer/2022062523/58ec4b1a1a28ab086d8b46d1/html5/thumbnails/6.jpg)
Pictures
• Color image of the Gale Crater created by a combination of images from the Viking spacecraft and the Mars Reconnaissance Orbiter
![Page 7: Discovering the Gale Crater](https://reader035.fdocuments.us/reader035/viewer/2022062523/58ec4b1a1a28ab086d8b46d1/html5/thumbnails/7.jpg)
Generating Terrain
• Digital Elevation Model & High Resolution Picture
• Convert to ENVI: 65,536 height values per pixel
• 60 fps
![Page 8: Discovering the Gale Crater](https://reader035.fdocuments.us/reader035/viewer/2022062523/58ec4b1a1a28ab086d8b46d1/html5/thumbnails/8.jpg)
Controls
• Resolution: 300x285 for desktop– 200x190 for phones
• Fly controls for desktop– VR controls for phones
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Collision Detection
• Can’t fly through ground• Use raycasting – geometry anyone?– Tests whether ray intersects with anything
• Invisible objects on the surface
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Taking The Tour
• Create curves between two points as a route– Can’t just move the camera – move backwards
along route
• Or Free Explore – Tilt, move, fly
![Page 11: Discovering the Gale Crater](https://reader035.fdocuments.us/reader035/viewer/2022062523/58ec4b1a1a28ab086d8b46d1/html5/thumbnails/11.jpg)
What’s Next?
• Future of journalism?– Maybe. Devices are expensive– Can be disorienting – slow movement
• But, lets you see almost anything