2018

SNIPER: Efficient Multi-Scale Training

Singh, Bharat, Najibi, Mahyar, Davis, Larry S.

Understand

We present SNIPER, an algorithm for performing efficient multi-scale training in instance level visual recognition tasks.

  • Instead of processing every pixel in an image pyramid, SNIPER processes context regions around ground-truth instances (referred to as chips) at the appropriate scale.
  • For background sampling, these context-regions are generated using proposals extracted from a region proposal network trained with a short learning schedule.
  • Hence, the number of chips generated per image during training adaptively changes based on the scene complexity.

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