This French-language technical work explores the fundamental principles and practical methods of image compression. Written by Jean-Paul Guillois, the book examines various compression algorithms and techniques used in digital image processing, providing theoretical foundations alongside real-world applications. Published in 1996 by Hermes Science, it serves as a resource for understanding how images can be efficiently stored and transmitted while maintaining quality. The 252-page paperback covers both lossless and lossy compression approaches, making it relevant for computer science students, engineers, and professionals working with digital media.