Instant texture transmission using bandwidth-optimized progressive interlacing images
Michael Englert, Yvonne Jung, Marcel Klomann, Jonas Etzold, Paul Grimm · 2014
We present an adaptive bandwidth-optimized approach for progressive image transmission to allow instant textured rendering in web-based 3D applications. Applications utilizing a lot of image data require an adaptive technology to build responsive user interfaces. This applies especially for the use in mobile networks. While several approaches provide a progressive geometry streaming, they do not focus on a fast and simple texture streaming for 3D web applications. However, standard 2D image transmission technologies are usually inappropriate within a 3D context. In 2D, image size as well as resolution are often set during the authoring phase, whereas in 3D applications size and displayed resolution of textured 3D objects depend on the virtual camera. An adaptive texture transmission mechanism has to consider this as part of its control function. Our approach thus combines progressive texture streaming with an adaptive number of refinement levels without any pixel retransmission. It enables a fast user feedback and reduces the transmitted data to a minimum without loss of visual quality. Moreover, our GPUII approach (GPU-based Image Interlacing) allows an easy integration into existing applications while also reducing the CPU load.