1 Fraunhofer IGD 2 TU Darmstadt (a) 17% triangles, low-resolution texture (b) 86% triangles, low-resolution texture (c) 86% triangles, high-resolution texture (d) 100% triangles, high-resolution texture Figure 1: Streaming of mesh data, progressively encoded with the POP Buffer method, using our proposed SRC container format. We minimize the number of HTTP requests, and at the same time allow for a progressive transmission of geometry and texture information, using interleaved data chunks. Our proposed format is highly flexible, well-aligned with GPU structures, and can easily be integrated into X3D. AbstractA problem that still remains with today's technologies for 3D asset transmission is the lack of progressive streaming of all relevant mesh and texture data, with a minimal number of HTTP requests. Existing solutions, like glTF or X3DOM's geometry formats, either send all data within a single batch, or they introduce an unnecessary large number of requests. Furthermore, there is still no established format for a joined, interleaved transmission of geometry data and texture data.Within this paper, we propose a new container file format, entitled Shape Resource Container (SRC). Our format is optimized for progressive, Web-based transmission of 3D mesh data with a minimum number of HTTP requests. It is highly configurable, and more powerful and flexible than previous formats, as it enables a truly progressive transmission of geometry data, partial sharing of geometry between meshes, direct GPU uploads, and an interleaved transmission of geometry and texture data. We also demonstrate how our new mesh format, as well as a wide range of other mesh formats, can be conveniently embedded in X3D scenes, using a new, minimalistic X3D ExternalGeometry node.

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a) Standard webVis UI elements with Instance Graph (IG) struct-tree views (b) Interactive high quality and secure visualisation via server-based ray-tracing and streaming (c) AR application with client-based composition of multi-buffer views Figure 1: Application examples using webVis / instant3DHub. The platform is able to deliver different kinds of browser-based visualisation applications, such as high-quality large model visualisation, CAD inspection, or augmented reality, while providing a straightforward and expressive tag set and API. AbstractThis paper presents the webVis / instant3DHub platform, which combines a novel Web-Components based framework and a Visual Computing as a Service infrastructure to deliver an interactive 3D data visualisation solution. The system focuses on minimising resource consumption, while maximising the end-user experience. It utilises an adaptive and automated combination of client, server and hybrid visualisation techniques, while orchestrating transmission, caching and rendering services to deliver structural and semantically complex data sets on any device class and network architecture. The API and Web Component framework allow the application developer to compose and manipulate complex data setups with a simple set of commands inside the browser, without requiring knowledge about the underlying service infrastructure, interfaces and the fully automated processes. This results in a new class of interactive applications, built around a canvas for real-time visualisation of massive data sets.