Methods › Computer Vision › RoI Feature Extractors › RoIAlign

RoIAlign

611 papers tagged archive 2025-07-28

Introduced by Kaiming He et al. in Mask R-CNN

archive 2025-07-28 Description, source and code snippet are the archive's method entry.

Region of Interest Align, or RoIAlign, is an operation for extracting a small feature map from each RoI in detection and segmentation based tasks. It removes the harsh quantization of RoI Pool, properly aligning the extracted features with the input. To avoid any quantization of the RoI boundaries or bins (using x/16 instead of [x/16]), RoIAlign uses bilinear interpolation to compute the exact values of the input features at four regularly sampled locations in each RoI bin, and the result is then aggregated (using max or average).

PaperSourceSee Code · facebookresearch/detectron2

Papers archive 2025-07-28

30 shown of 611, newest first. Repository counts are the archive's code-links table. A Syntology line states what Syntology ran from that paper's harvested code; it is per sample and not a correctness claim.

Tasks archive 2025-07-28

20 shown of 409 tasks the archive attaches to papers tagged with this method, by distinct papers. A task without a page in the catalog is plain text.

TaskPapers
Semantic Segmentation214
Instance Segmentation191
Object Detection168
Segmentation150
object-detection144
Object95
Image Classification29
Transfer Learning25
Classification20
NeRF20
Pose Estimation20
Text Classification20
text-classification19
Data Augmentation18
General Classification18
image-classification18
Panoptic Segmentation17
regression17
Image Segmentation16
Novel View Synthesis16

Usage over time archive 2025-07-28

Papers per year tagged with RoIAlign: 2017 to 2025, peak 119 119 0 2017: 9 papers 2017 2018: 33 papers 2018 2019: 84 papers 2019 2020: 99 papers 2020 2021: 119 papers 2021 2022: 65 papers 2022 2023: 81 papers 2023 2024: 79 papers 2024 2025: 42 papers 2025
Papers per year the archive tags with this method, by the paper's archive date (611 dated). Bars are counts, not a trend claim.

Components: the archive holds no method-to-method composition, so PwC's Components table cannot be rebuilt; the Papers list carries no Results column for the same reason (the archive does not join its leaderboard rows to method tags).

Categories archive 2025-07-28

RoI Feature Extractors

Report a problem or propose a change · a person checks every report against the paper or source before anything changes; decisions are listed on /corrections