OSA (identity mapping + eSE)
OSA (identity mapping + eSE)
**One-Shot Aggregation with an Identity Mapping and eSE** is an image model block that extends [one-shot aggregation](https://paperswithcode.com/method/one-shot-aggregation) with a [residual connection](https://paperswithcode.com/method/residual-connection) and [effective squeeze-and-excitation block](https://paperswithcode.com/method/effective-squeeze-and-excitation-block). It is proposed as part of the [VoVNetV2](https://paperswithcode.com/method/vovnetv2) CNN architecture.

The module adds an identity mapping to the OSA module - the input path is connected to the end of an OSA module that is able to backpropagate the gradients of every OSA module in an end-to-end manner on each stage like a [ResNet](https://paperswithcode.com/method/resnet). Additionally, a [channel attention module](https://paperswithcode.com/method/channel-attention-module) - effective Squeeze-Excitation - is used which is like regular [squeeze-and-excitation](https://paperswithcode.com/method/squeeze-and-excitation-block) but uses only one FC layer with $C$ channels instead of two FCs without a channel dimension reduction, which maintains channel information.
CenterMask : Real-Time Anchor-Free Instance Segmentation
https://paperswithcode.com/paper/centermask-real-time-anchor-free-instance-1
CenterMask : Real-Time Anchor-Free Instance Segmentation