This research was initiated by questions raised from the researcher’s professional activities in fine art printmaking and examines, through contextualised artistic practice and critical enquiry, redefinitions in the physical and temporal parameters of digitally mediated fine art printmaking caused by developments in digital media; specifically the impact of digital culture, Web2.0, social networking, augmented and virtual reality. Grounded on critical contextual review the research explores, through contextualised research probes, the notion of post-physical practice and the impact of new modes of collaboration, distribution and consumption on contemporary printmaking. It includes the findings of an international, digitally mediated, participatory and collaborative exchange survey of contemporary digital print, developed through direct enquiry using social media as a research tool. Philosophical questions about the impact of eculture, post-physical working and new modes of print-based artistic practice were examined, as well as the indexicality of the print itself in augmented and virtual contexts. The research employs dynamic triangulation between critical contextual review and direct qualitative and practice-based research; to develop a taxonomy framing the contextual precedents of digital printmaking, pinpointing key markers of transition between traditional and new printmaking. It uses post-studio methods and explores the conception, production, editioning, collection and ownership of print in an increasingly networked digital age, providing proof of concept and exploring virtual immersive surfaces in printmaking. These lead to the development of new models for a second generation of printmaking practice or Printmaking2.0 expressly founded in post-physical practice in a poststudio context and embracing the lingua franca of contemporary digital practice in the production of born digital virtually imprinted forms. In both, the technical practice of post-physical printmaking and the significant artistic implications resulting from the cultural shifts following digital participation and post-physical embodiment.

La création d'informations 3D denses à partir d'images endoscopiques intraopératoires, ainsi que le calcul de la position relative de la caméra endoscopique, sont des éléments fondamentaux pour un guidage de qualité durant la chirurgie guidée par l'image. Par exemple, cela permet de superposer modèle pré-opératoire via la réalité augmentée. Cette thèse présente une approche pour l'estimation de ces deux information basées sur une approche de localisation et cartographie simultanées (SLAM). Nous découplons la reconstruction dense de l'estimation de la trajectoire de la caméra, aboutissant à un système qui combine la précision du SLAM, et une reconstruction plus complète. Les solutions proposées dans cette thèse ont été validées sur de séquences porcines provenant de différents ensembles de données. Ces solutions n'ont pas besoin de matériel de suivi externe ni d'intervention. Les seules entrées nécessaires sont les trames vidéo d'un endoscope monoculaire. / Recovering dense 3D information from intra-operative endoscopic images together with the relative endoscope camera pose are fundamental blocks for accurate guidance and navigation in image-guided surgery. They have several important applications, e.g., augmented reality overlay of pre-operative models. This thesis provides a systematic approach for estimating these two pieces of information based on a pure vision Simultaneous Localization And Mapping (SLAM). We decouple the dense reconstruction from the camera trajectory estimation, resulting in a system that combines the accuracy and robustness of feature-based SLAM with the more complete reconstruction of direct SLAM methods. The proposed solutions in this thesis have been validated on real porcine sequences from different datasets and proved to be fast and do not need any external tracking hardware nor significant intervention from medical staff. The sole input is video frames of a standard monocular endoscope.