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  • What is it?
  • How is it computed

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  1. ML & Data Science
  2. Computer Vision
  3. Object Detection
  4. Metrics

Objectness Score

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Last updated 7 months ago

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Understanding Objectness in Object Detection Models ()

What is it?

It measures the probability of an object to exist in a proposed RoI.

  • High objectness -> image window likely contains an object

If an image has high objectness, we expect it to have:

  • Uniqueness in the whole image

  • Tight boundaries around the object

  • Different appearance to its surroundings

How is it computed

This score objectness score is given based on the IoU or Intersection-over-Union. The min value is 0 and the max is 1.

It's the ratio between:

  • the area of intersection between the anchor box and the GT bbox

  • the area of the union of both boxes.

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