Merge pull request #108 from ChonghaoSima/master

add slides link

README.md

@@ -8,7 +8,7 @@ https://user-images.githubusercontent.com/27915819/161392594-fc0082f7-5c37-4919-
 
 > **BEVFormer: Learning Bird's-Eye-View Representation from Multi-Camera Images via Spatiotemporal Transformers**, ECCV 2022
 > - [Paper in arXiv](http://arxiv.org/abs/2203.17270) | [Paper in Chinese](https://drive.google.com/file/d/1dKnD6gUHhBXZ8gT733cIU_A7dHEEzNTP/view?usp=sharing) |  [OpenPerceptionX](https://www.zhihu.com/people/PerceptionX)
-> -  [Blog in Chinese](https://www.zhihu.com/question/521842610/answer/2431585901) | [Video Talk](https://www.bilibili.com/video/BV12t4y1t7Lq?share_source=copy_web) (in Chinese) 
+> -  [Blog in Chinese](https://www.zhihu.com/question/521842610/answer/2431585901) | [Video Talk](https://www.bilibili.com/video/BV12t4y1t7Lq?share_source=copy_web) and [Slides](https://docs.google.com/presentation/d/1NNeikhDPkgT14G1D_Ih7K3wbSN0DkvhO9wlAMx3CIcM/edit?usp=sharing) (in Chinese) 
 > - [BEV Perception Survey](https://arxiv.org/abs/2209.05324) | [Github repo](https://github.com/OpenPerceptionX/BEVPerception-Survey-Recipe)