update

README.md

@@ -74,6 +74,7 @@
 - [Reduced Model Predictive Control Toward Highly Dynamic Quadruped Locomotion](https://ieeexplore.ieee.org/document/10418132/)
 - [Rethinking Robustness Assessment: Adversarial Attacks on Learning-based Quadrupedal Locomotion Controllers](https://arxiv.org/abs/2405.12424)
 - [Sim-to-Real: A Performance Comparison of PPO, TD3, and SAC Reinforcement Learning Algorithms for Quadruped Walking Gait Generation](https://www.scirp.org/journal/paperinformation?paperid=131938)
+- [Similar but Different: A Survey of Ground Segmentation and Traversability Estimation for Terrestrial Robots](https://arxiv.org/abs/2312.16839)
 - [Track2Act: Predicting Point Tracks from Internet Videos enables Diverse Zero-shot Robot Manipulation](https://arxiv.org/abs/2405.01527)
 - [Understanding URDF: A Dataset and Analysis](https://ieeexplore.ieee.org/abstract/document/10478618)
 - [Viability leads to the emergence of gait transitions in learning agile quadrupedal locomotion on challenging terrains](https://www.nature.com/articles/s41467-024-47443-w)
@@ -567,6 +568,7 @@
 - [Dynamic Robotics Laboratory - Oregon State University](https://mime.engineering.oregonstate.edu/research/drl/)
 - [Human Centered Robotics Laboratory - University of Texas at Austin](http:https://sites.utexas.edu/hcrl/)
 - [Institute for Human and Machine Cognition - Nadia](https://robots.ihmc.us/)
+- [Unitree - G1](https://mp.weixin.qq.com/s/RGNVRazZqDn3y_Ijemc5Kw)
 
 </details>