Researchers at Caltech have spent the last six years building a 5.7-terapixel mosaic that shows nearly the entire surface of Mars.
. The 5.7 trillion pixel-image covers 99.5 percent of the Martian surface between 88 degrees south and 88 degrees north. The remaining 0.5 percent was either not imaged or available in high enough quality when the mosaic was created.
“The scale of this is really unprecedented,” adds Jay Dickson, Murray Lab manager and research scientist in image processing. Dickson developed the idea for the project when he was hired to establish the Murray Lab in 2016. Most of the 110,000 source images were processed and stitched using this algorithm. However, about 13,000 remaining images required hand-stitching, a labor-intensive process that took three years. The problematic images were often partially obscured by dust storms and clouds on Mars, which tripped up the automatic alignment process.
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