We present a fast bottom-up method that jointly detects over 100 keypoints on
humans or objects, also referred to as human/object pose estimation. We model
all keypoints belonging to a human or an object -- the pose -- as a graph and
leverage insights from community detection to quantify the independence of
keypoints. We use a graph centrality measure to assign training weights to
different parts of a pose. Our proposed measure quantifies how tightly a
keypoint is connected to its neighborhood. Our experiments show that our method
outperforms all previous methods for human pose estimation with fine-grained
keypoint annotations on the face, the hands and the feet with a total of 133
keypoints. We also show that our method generalizes to car poses.

用快速的自下而上的方法，结合图形中心性度量对人类或物体上的 100 多个关键点进行检测，为硬件和人物建模，量化关键点的独立性，将训练权重分配给不同部位的姿势。经实验证明该方法优于以往的所有人体姿势估计方法，而且具有很好的泛化性能。

关键点社群

Keypoint Communities

Bottom-up human pose estimation methods have difficulties in predicting the
correct pose for small persons due to challenges in scale variation. In this
paper, we present HigherHRNet: a novel bottom-up human pose estimation method
for learning scale-aware representations using high-resolution feature
pyramids. Equipped with multi-resolution supervision for training and
multi-resolution aggregation for inference, the proposed approach is able to
solve the scale variation challenge in bottom-up multi-person pose estimation
and localize keypoints more precisely, especially for small person. The feature
pyramid in HigherHRNet consists of feature map outputs from HRNet and upsampled
higher-resolution outputs through a transposed convolution. HigherHRNet
outperforms the previous best bottom-up method by 2.5% AP for medium person on
COCO test-dev, showing its effectiveness in handling scale variation.
Furthermore, HigherHRNet achieves new state-of-the-art result on COCO test-dev
(70.5% AP) without using refinement or other post-processing techniques,
surpassing all existing bottom-up methods. HigherHRNet even surpasses all
top-down methods on CrowdPose test (67.6% AP), suggesting its robustness in
crowded scene. The code and models are available at
this https URL

这篇论文提出了 HigherHRNet，一种新的从下往上的人体姿态估计方法，使用高分辨率特征金字塔学习尺度感知表示，具有多分辨率监督训练和多分辨率聚合推理的能力，能够解决下向多人姿势估计中的尺度变化挑战，从而更精确地定位关键点，尤其适用于小尺寸人体，实现了比以前最好的下向方法在 COCO test-dev 中中等人体上 2.5% AP 的提高。在 CrowdPose test 上，HigherHRNet 甚至超过了所有自上而下的方法，表明其在拥挤场景中具有鲁棒性。