Digital multimedia communications : 19th International Forum IFTC 2022 Shanghai China December 8 9 2022 revised selected papers This book constitutes the refereed proceedings of the 9th International Forum on Digital Multimedia Communication IFTC 2022 held in Shanghai China December 8 9 2022. The 40 full papers included in this book were carefully reviewed and selected from 112 submissions. They were organized in topical sections as follows: Computer Vision; Image Analysis; Quality Assessment; Video Processing; Machine Learning; and Big data