Scale space and variational methods in computer vision : 9th international conference SSVM 2023 Santa Margherita di Pula Italy May 21 25 2023 : proceedings This book constitutes the proceedings of the 9th International Conference on Scale Space and Variational Methods in Computer Vision SSVM 2023 which took place in Santa Margherita di Pula Italy in May 2023. The 57 papers presented in this volume were carefully reviewed and selected from 72 submissions. They were organized in topical sections as follows: Inverse Problems in Imaging; Machine and Deep Learning in Imaging; Optimization for Imaging: Theory and Methods; Scale Space PDEs Flow Motion and Registration