Welcome to the special issue of the 34th Computer Graphics International conference (CGI'17)! Computer Graphics International is one of the oldest true international conferences in computer graphics. It is the official conference of the Computer Graphics Society (CGS), a long-standing international computer graphics organization. CGI and CGS were initiated in Tokyo by Professor Tosiyasu L. Kunii from the University of Tokyo in 1983. Since then, the CGI conference has been held annually in many different countries across the world and gained a reputation as one of the key conferences for researchers and practitioners to share their achievements and discover the latest advances in this field. CGI this year has been organized by Faculty of Science and Technology, Keio University in Yokohama, Japan, between 27th and 30th June, 2017, with support from CGS and in cooperation with ACM/SIGGRAPH and Eurographics. This special issue of the Visual Computer is composed of the 35 best papers from CGI'17. We received 171 submissions from 33 countries and regions, making the acceptance ratio about 20%. To ensure the highest quality of publications, each paper has been reviewed by at least three experts in the field. The International Program Committee is comB Xiaoyang Mao