The three-volume set LNCS 16507, 16508 and 16509 constitutes the refereed proceedings from the 42nd Computer Graphics International Conference, CGI 2025, held in Hong Kong, China, during July 14–18, 2025.

The 124 full papers presented in these proceedings were carefully reviewed and selected from 402 submissions. The papers are organized in the following topical sections:

Part I: Colors, Painting and Layout; Graphics and VR/AR; Medical Imaging and Robotics; Segmentation and Understanding; and Visual Analytics and Modeling.

Part II: Detection and Recognition; Image Analysis and Processing; Image Attention and Perception; Reconstruction; and Rendering and Animation.

Part III: Image Analysis and Visualization; Image Restoration and Enhancement; Super-Resolution and Recovery; Synthesis and Generation; and Theoretical Analysis.