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Just as a heads up, the HazCams on Perseverance are in fact in color (Source: https://link.springer.com/article/10.1007/s11214-020-00765-9 https://link.springer
by whuffman 6y ago
Just as a heads up, the HazCams on Perseverance are in fact in color (Source: https://link.springer.com/article/10.1007/s11214-020-00765-9 https://link.springer.com/article/10.1007/s11214-020-00765-9 - "The Mars 2020 Navcams and Hazcams offer three primary improvements over MER and MSL. The first improvement is an upgrade to a detector with 3-channel, red/green/blue (RGB) color capability that will enable better contextual imaging capabilities than the previous engineering cameras, which only had a black/white capability.") Your observations are correct though - the stereo precision is important, so there was additional analysis of the stereo depth computation to make sure it wouldn't cause an issue.
- nwallin 6y agoHuh, I guess so. Looking over the study it looks like they had issues by looking at dirt in scoops and being unable to tell whether it's Martian dirt or a shadow. I have a feeling I'd be the angry guy in the meeting who wouldn't accept the consensus. "but what about latency! what about the descend and landing!" shakes fist
- rmonroe 6y agoNah, your concerns are 100% reasonable - they just operate on a different context. On Earth, latency is king. On Mars, especially until the Primary Mission is complete, it's all about risk mitigation. Since we're light-minutes away from Earth, a few frames of latency is nothing. At the same time, you want to avoid breaking your $3B machine, which is hard to operate given the time-of-light delay and comms limitations. Just a different set of tradeoffs. IIRC they first tested on-device deep learning for hazard avoidance in Curiosity, but don't quote me on that. -Worked at JPL for a few years and have dozens of friends, a few in the vision system.