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> This. Modern photogrammetry uses computer vision techniques like deep neural nets.

I'm surprised to hear that. What good do DNN do for photogrammetry? Aren't they too unreliable?

I only have university course-level exposure to this, most of it spent learning how to compute coordinate systems and transformation matrices from points on a set of pictures taken from different position. I guess DNNs could help with object isolation and labeling (identifying same objects on a set of pictures taken from different perspective)?



Look for Deep SLAM or visual odometry papers, such as:

* https://www.youtube.com/watch?v=Ccj1O7yndIk

* https://www.youtube.com/watch?v=eOuonMhEsxI

* https://www.groundai.com/project/df-slam-a-deep-learning-enh...

The Related work section in the DF-SLAM paper is great.

As you intuited, DNNs work great for tracking visual landmarks (better than traditional computed features) between frames. They can also estimate depth from a monocular camera, which is very useful.

A more out-of-left-field idea is training a CNN to directly regress the camera pose (position and orientation) from an image:

PoseNet, https://www.youtube.com/watch?v=u0MVbL_RyPU




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