Add a neighborhood search to the TrajectoryExplorer #745
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Add a search that will perform a hyper-localized search. This search effectively uses a small neighborhood around a given trajectory (both in terms of starting pixel and velocities) and returns all results from this neighborhood. This localized set can be used to:
As part of this change we remove a small optimization from the core search (which did not bother to sort trajectories with LH <= -1.0 since we knew they would be filtered eventually). This removes that optimization so we can get the full grid of nearby trajectories.