Fast and accurate multi-view reconstruction by multi-stage prioritised matching

In this study, the authors propose a multi‐view stereo reconstruction method which creates a three‐dimensional point cloud of a scene from multiple calibrated images captured from different viewpoints. The method is based on a prioritised match expansion technique, which starts from a sparse set of seed points, and iteratively expands them into neighbouring areas by using multiple expansion stages. Each seed point represents a surface patch and has a position and a surface normal vector. The location and surface normal of the seeds are optimised using a homography‐based local image alignment. The propagation of seeds is performed in a prioritised order in which the most promising seeds are expanded first and removed from the list of seeds. The first expansion stage proceeds until the list of seeds is empty. In the following expansion stages, the current reconstruction may be further expanded by finding new seeds near the boundaries of the current reconstruction. The prioritised expansion strategy allows efficient generation of accurate point clouds and their experiments show its benefits compared with non‐prioritised expansion. In addition, a comparison to the widely used patch‐based multi‐view stereo software shows that their method is significantly faster and produces more accurate and complete reconstructions

Better Segmentation of Enterprise Modelling Governance through Usage Perspectives

International audienceEnterprise modelling is an endeavor that involves many different stakeholders in a company and requires a long-term approach to reap major benefits. Due to their differing main tasks the stakeholders frequently pursue deviating goals. Therefore, an appropriate management of the stakeholders is considered a success factor for enterprise modelling. The goals of the stakeholders in respect of an enterprise model and their role in the modelling process are crucial for this distinction. The differentiation can be facilitated by generic goals and a scheme that accounts for influences like variants in the size of companies and the impact of enterprise modelling on business. The application of the outlined procedure is exemplified with an illustrative case of a chemical supplier

How Enterprise Architecture Formative Critical Success Facets Might Affect Enterprise Architecture Success: A Literature Analysis

Part 4: Enterprise ArchitectureInternational audienceThough Enterprise Architecture (EA) is getting increasing attentions from both academics and practitioners, EA research around EA success factors remains modest and immature. This study explores how EA formative critical success facets/factors would affect the achievement of EA success. This research highlights the importance of four mediators, i.e., (I) Real and mature business needs; (II) Real and continuous commitment; (III) Actionable EA programs; and (IV) Well-controlled execution of EA programs. This study deepens our understanding of EA success and would be of explanatory contribution to EA value development and action-guiding contribution to EA adoption and implementation