The 8th European Conference on Computer Vision (ECCV 2004) was held in Prague, Czech Republic, from May 11-14, 2004. The conference received 555 submissions, with 41 papers accepted for oral presentations and 149 for poster sessions. The review process was improved by increasing the number of program committee members, introducing a paper ranking system, allowing authors to respond to reviews, and reducing the length of submitted papers from 15 to 12 pages. The conference was organized by the organizing committee, area chairs, program committee, and reviewers, with support from the Centre for Machine Perception of the Czech Technical University in Prague. The conference covered a wide range of topics in computer vision, including tracking, geometry, learning, and recognition. The proceedings include 400 pages of content, with 12 chapters covering various aspects of computer vision. The content includes research papers, posters, and a detailed author index. The conference was a successful event that brought together researchers and practitioners in the field of computer vision.The 8th European Conference on Computer Vision (ECCV 2004) was held in Prague, Czech Republic, from May 11-14, 2004. The conference received 555 submissions, with 41 papers accepted for oral presentations and 149 for poster sessions. The review process was improved by increasing the number of program committee members, introducing a paper ranking system, allowing authors to respond to reviews, and reducing the length of submitted papers from 15 to 12 pages. The conference was organized by the organizing committee, area chairs, program committee, and reviewers, with support from the Centre for Machine Perception of the Czech Technical University in Prague. The conference covered a wide range of topics in computer vision, including tracking, geometry, learning, and recognition. The proceedings include 400 pages of content, with 12 chapters covering various aspects of computer vision. The content includes research papers, posters, and a detailed author index. The conference was a successful event that brought together researchers and practitioners in the field of computer vision.