Weibin Liu received the Ph.D. degree in Signal and Information Processing from Institute of Information Science at Beijing Jiaotong University, China, in 2001. During 2001-2005, he was a researcher in Information Technology Division at Fujitsu Research and Development Center Co., LTD. Since 2005, he has been with the Institute of Information Science, School of Computer Science and Technology at Beijing Jiaotong University, where currently he is a professor in Digital Media Research Group. He was also a visiting researcher in Center for Human Modeling and Simulation at University of Pennsylvania, PA, USA during 2009-2010. His research interests include computer vision, video and image processing, deep learning, computer graphics, virtual human and virtual environment, and pattern recognition. Huaqing Hao received the B.S. and M.S. degree in Electronic Information Engineering from Heibei University, China, in 2015 and 2018, respectively. She received the Ph.D degree in Signal and Information Processing from Institute of Information Science at Beijing Jiaotong University, China, in 2024. Currently, she is an associate professor at College of Electronic Information Engineering, Hebei University. Her main research interests include computer vision, pattern recognition and deep learning, in particular focusing on human parsing. Hui Wang received the B.S. degree in Electronic Information Engineering from Hebei University, China, in 2016. He received the Ph.D degree in Signal and Information Processing from Institute of Information Science at Beijing Jiaotong University, China, in 2023. Currently, he is an associate professor at College of Electronic Information Engineering, Hebei University. His research interests include computer vision, image processing, video object segmentation. Zhiyuan Zou received the B.S. degree in Software Engineering from Beijing Jiaotong University, Beijing, China, in 2015, and Ph.D. degree in Software Engineering from Institute of Information Science, Beijing Jiaotong University, in 2022. Currently, he is an associate professor at Computer School, Beijing Information Science and Technology University. His research interests include scene understanding, deep learning, computer vision, and pattern recognition. Weiwei Xing received the B.S. degree in Computer Science and Technology and the Ph.D. degree in Signal and Information Processing from Beijing Jiaotong University, Beijing, China, in 2001 and 2006, respectively. She was a visiting scholar at University of Pennsylvania, PA, USA during 2011-2012. She is currently a professor at School of Software Engineering, Beijing Jiaotong University and leads the research group on Intelligent Computing and Big Data. Her research interests include computer vision, intelligent perception and applications.

• Introduction.- Scene understanding.- Graph neural network basics.- Graph convolutional network for scene parsing.- Graph neural network for human parsing.- Dynamic graph neural networks for human parsing.- Graph neural networks for video object segmentation.- Conclusion and future work.

Weibin Liu received the Ph.D. degree in Signal and Information Processing from Institute of Information Science at Beijing Jiaotong University, China, in 2001. During 2001-2005, he was a researcher in Information Technology Division at Fujitsu Research and Development Center Co., LTD. Since 2005, he has been with the Institute of Information Science, School of Computer Science and Technology at Beijing Jiaotong University, where currently he is a professor in Digital Media Research Group. He was also a visiting researcher in Center for Human Modeling and Simulation at University of Pennsylvania, PA, USA during 2009-2010. His research interests include computer vision, video and image processing, deep learning, computer graphics, virtual human and virtual environment, and pattern recognition. Huaqing Hao received the B.S. and M.S. degree in Electronic Information Engineering from Heibei University, China, in 2015 and 2018, respectively. She received the Ph.D degree in Signal and Information Processing from Institute of Information Science at Beijing Jiaotong University, China, in 2024. Currently, she is an associate professor at College of Electronic Information Engineering, Hebei University. Her main research interests include computer vision, pattern recognition and deep learning, in particular focusing on human parsing. Hui Wang received the B.S. degree in Electronic Information Engineering from Hebei University, China, in 2016. He received the Ph.D degree in Signal and Information Processing from Institute of Information Science at Beijing Jiaotong University, China, in 2023. Currently, he is an associate professor at College of Electronic Information Engineering, Hebei University. His research interests include computer vision, image processing, video object segmentation. Zhiyuan Zou received the B.S. degree in Software Engineering from Beijing Jiaotong University, Beijing, China, in 2015, and Ph.D. degree in Software Engineering from Institute of Information Science, Beijing Jiaotong University, in 2022. Currently, he is an associate professor at Computer School, Beijing Information Science and Technology University. His research interests include scene understanding, deep learning, computer vision, and pattern recognition. Weiwei Xing received the B.S. degree in Computer Science and Technology and the Ph.D. degree in Signal and Information Processing from Beijing Jiaotong University, Beijing, China, in 2001 and 2006, respectively. She was a visiting scholar at University of Pennsylvania, PA, USA during 2011-2012. She is currently a professor at School of Software Engineering, Beijing Jiaotong University and leads the research group on Intelligent Computing and Big Data. Her research interests include computer vision, intelligent perception and applications.

• Introduction.- Scene understanding.- Graph neural network basics.- Graph convolutional network for scene parsing.- Graph neural network for human parsing.- Dynamic graph neural networks for human parsing.- Graph neural networks for video object segmentation.- Conclusion and future work.

Weibin Liu received the Ph.D. degree in Signal and Information Processing from Institute of Information Science at Beijing Jiaotong University, China, in 2001. During 2001-2005, he was a researcher in Information Technology Division at Fujitsu Research and Development Center Co., LTD. Since 2005, he has been with the Institute of Information Science, School of Computer Science and Technology at Beijing Jiaotong University, where currently he is a professor in Digital Media Research Group. He was also a visiting researcher in Center for Human Modeling and Simulation at University of Pennsylvania, PA, USA during 2009-2010. His research interests include computer vision, video and image processing, deep learning, computer graphics, virtual human and virtual environment, and pattern recognition. Huaqing Hao received the B.S. and M.S. degree in Electronic Information Engineering from Heibei University, China, in 2015 and 2018, respectively. She received the Ph.D degree in Signal and Information Processing from Institute of Information Science at Beijing Jiaotong University, China, in 2024. Currently, she is an associate professor at College of Electronic Information Engineering, Hebei University. Her main research interests include computer vision, pattern recognition and deep learning, in particular focusing on human parsing. Hui Wang received the B.S. degree in Electronic Information Engineering from Hebei University, China, in 2016. He received the Ph.D degree in Signal and Information Processing from Institute of Information Science at Beijing Jiaotong University, China, in 2023. Currently, he is an associate professor at College of Electronic Information Engineering, Hebei University. His research interests include computer vision, image processing, video object segmentation. Zhiyuan Zou received the B.S. degree in Software Engineering from Beijing Jiaotong University, Beijing, China, in 2015, and Ph.D. degree in Software Engineering from Institute of Information Science, Beijing Jiaotong University, in 2022. Currently, he is an associate professor at Computer School, Beijing Information Science and Technology University. His research interests include scene understanding, deep learning, computer vision, and pattern recognition. Weiwei Xing received the B.S. degree in Computer Science and Technology and the Ph.D. degree in Signal and Information Processing from Beijing Jiaotong University, Beijing, China, in 2001 and 2006, respectively. She was a visiting scholar at University of Pennsylvania, PA, USA during 2011-2012. She is currently a professor at School of Software Engineering, Beijing Jiaotong University and leads the research group on Intelligent Computing and Big Data. Her research interests include computer vision, intelligent perception and applications.

• Introduction.- Scene understanding.- Graph neural network basics.- Graph convolutional network for scene parsing.- Graph neural network for human parsing.- Dynamic graph neural networks for human parsing.- Graph neural networks for video object segmentation.- Conclusion and future work.