My research in graph signal processing concerns its application to computer vision tasks

J. Giraldo, S. Javed, M. Sultana, S. Jung, T. Bouwmans,  "The Emerging Field of Graph Signal Processing for Moving Object Segmentation", International Workshop on Frontiers of Computer Vision, IW-FCV 2021, Daegu, South Korea, February 2021. 

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For more references, the reader can refer to the “Graph Signal Processing Website” which groups more than 150 papers and codes in the field.