What does FPN in SSD MobileNet V2 FPNLite 320x320 stand for?

Question

I was looking at the TensorFlow 2.0 Detection Zoo recently and found the SSD MobileNet V2 FPNLite 320x320 pre-trained model and was wondering what the FPN part in "FPNLite" means/stands for.

score 3 · Accepted Answer · answered Aug 30 '20 at 18:36

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It stands for Feature Pyramid Network. Its a subnetwork which outputs feature maps of different resolutions. An explanation of FPN using detectron2 as an example is here: https://medium.com/@hirotoschwert/digging-into-detectron-2-part-2-dd6e8b0526e

answered Aug 30 '20 at 18:36

katsu

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Hello, could you take a look at this: https://stackoverflow.com/questions/64621656/can-we-show-underfitting-with-mobilenet – Oct 31 '20 at 12:28
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What does 320 x 320 means ? – Karunesh Palekar Nov 26 '20 at 14:24
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The resolution of the imput image – Florida Man Jan 29 '21 at 08:30

score 1 · Answer 2 · answered Sep 11 '21 at 07:25

A Feature Pyramid Network, or FPN, is a feature extractor that takes a single-scale image of an arbitrary size as input, and outputs proportionally sized feature maps at multiple levels, in a fully convolutional fashion. This process is independent of the backbone convolutional architectures.

What does FPN in SSD MobileNet V2 FPNLite 320x320 stand for?

2 Answers2