When NASA's Ingenuity Mars Helicopter took to the Martian skies on its third flight on April 25, the agency's Perseverance rover was there to capture the historic moment. Now NASA engineers have rendered the flight in 3D, lending dramatic depth to the flight as the helicopter ascends, hovers, then zooms laterally off-screen before returning for a pinpoint landing. Seeing the sequence is a bit like standing on the Martian surface next to Perseverance and watching the flight firsthand.

Located on the rover's mast, or "head," the zoomable dual-camera Mastcam-Z imager provided the view. Along with producing images that enable the public to follow the rover's daily discoveries, the cameras provide key data to help engineers navigate and scientists choose interesting rocks to study.

Justin Maki, an imaging scientist at NASA's Jet Propulsion Laboratory in Southern California, led the team that stitched the images into a video. The frames of the video were reprojected to optimize viewing in an anaglyph, or an image seen in 3D when viewed with color-filtered glasses (you can create your own 3D glasses in a few minutes).

Maki's been creating 3D imaging of Mars since his days as a graduate student processing images from NASA's Sojourner, the first Mars rover in 1997. But this is the first time he's created actual 3D video of an aircraft flying on Mars. "The Mastcam-Z video capability was inherited from the Mars Science Laboratory MARDI (MArs Descent Imager) camera," Maki said.

"To be reusing this capability on a new mission by acquiring 3D video of a helicopter flying above the surface of Mars is just spectacular." The videos of the helicopter are the most extensive 3D video yet from the Mastcam-Z team.

The rover's drivers and robotic-arm operators use a more sophisticated 3D system to understand exactly how things are positioned on Mars before planning the rover's movements. But, according to Maki, team members have also been viewing still 3D images for rover-drive planning. "A helicopter flying on Mars opens a new era for Mars exploration. It's a great demonstration of a new technology for exploration," he added. "With each flight we open up more possibilities."

The April 25 flight brought with it several other firsts, with Ingenuity rising 16 feet (5 meters), then flying downrange 164 feet (50 meters). That was a record until Ingenuity traveled 873 feet (266 meters) on its fourth flight, on April 30. For its fifth flight, on May 7, Ingenuity completed its first one-way trip, traveling 423 feet (129 meters), then reaching an altitude of 33 feet (10 meters) above its new landing field.

The flights began as a technology demonstration intended to prove that powered, controlled flight on Mars is possible. Now they will serve as an operations demonstration, exploring how aerial scouting and other functions could benefit future exploration of Mars.

Related Links
Ingenuity Mars Helicopter
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Perseverance rover captures sound of Ingenuity flying on Mars
Washington (AFP) May 8, 2021
NASA's Perseverance rover has for the first time captured the low-pitched whirring of the Ingenuity helicopter's blades as it flies through the rarefied Martian atmosphere. The space agency on Friday released new footage shot by the six-wheeled robot of its rotorcraft companion making its fourth flight on April 30 - this time accompanied by an audio track. The nearly three-minute-long video begins with the low rumble of wind blowing across the Jezero Crater, where Perseverance landed in Februar ... read more