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"AFAIK, that would require a) automatically selecting trackable objects and b) tracking many of them simultaneously."

I'm not really sure I understood you, but this two problems are already solved. Hugin[1] for example has automatic control point generation for photo stitching. Were you talking about something else?


Yeah, there are many ways to detect features but I haven't read the paper yet and I don't know what kind of features it wants and if there are any problems with choosing them automatically. Like, can it group features into distinct objects without a human pointing them out?

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