**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.

**FairMOT** is a model for multi-object tracking which consists of two homogeneous branches to predict pixel-wise objectness scores and re-ID features. The achieved fairness between the tasks is used to achieve high levels of detection and tracking accuracy. The detection branch is implemented in an anchor-free style which estimates object centers and sizes represented as position-aware measurement maps. Similarly, the re-ID branch estimates a re-ID feature for each pixel to characterize the object centered at the pixel. Note that the two branches are completely homogeneous which essentially differs from the previous methods which perform detection and re-ID in a cascaded style. It is also worth noting that FairMOT operates on high-resolution feature maps of strides four while the previous anchor-based methods operate on feature maps of stride 32. The elimination of anchors as well as the use of high-resolution feature maps better aligns re-ID features to object centers which significantly improves the tracking accuracy.

FairMOT

FairMOT: On the Fairness of Detection and Re-Identification in Multiple Object Tracking

OSA (identity mapping + eSE)

CenterMask : Real-Time Anchor-Free Instance Segmentation

A log-time alternative to feedforward layers outperforming both the vanilla feedforward and mixture-of-experts approaches.

Source	CenterMask : Real-Time Anchor-Free Instance Segmentation
Year	2000
Data Source	CC BY-SA - https://paperswithcode.com