An evaluation of 3-D scene exploration using a multiperspective image framework

Abstract

Multiperspective images (MPIs) show more than what is visible from a single viewpoint and are a promising approach for alleviating the problem of occlusions. We present a comprehensive user study that investigates the effectiveness of MPIs for 3-D scene exploration. A total of 47 subjects performed searching, counting, and spatial orientation tasks using both conventional and multiperspective images. We use a flexible MPI framework that allows trading off disocclusion power for image simplicity. The framework also allows rendering MPI images at interactive rates, which enables investigating interactive navigation and dynamic 3-D scenes. The results of our experiments show that MPIs can greatly outperform conventional images. For searching, subjects performed on average 28% faster using an MPI. For counting, accuracy was on average 91% using MPIs as compared to 42% for conventional images.

Occlusion-Free Visualization of Important Geographic Features in 3D Urban Environments

“…Considering the above limitations, future research will focus on accelerating the framerates. We will achieve this by applying urban simplifications, such as the methods of Glander et al [15] and Zhang et al [8]. In future work, we will implement the transformation process directly in the GPU [27] to improve the framerate of our system.…”

“…The subjects' task is to match a route with a 2D map using the conventional perspective (CP) views, our 3D occlusion-free (OF) views, or the focus+context (FC) views, respectively, which is similar to the evaluation task presented by Rosen and Popescu [8]. Before the test, the subjects were shown the three types of views with no special technical instructions or suggestions and were given ten minutes to familiarize themselves with our system.…”

“…However, occlusions by urban objects are very common, particularly for cities packed with skyscrapers. When perspective projection is used, distant objects are inevitably occluded by those nearer the viewpoint [8]. As for car navigation applications, the route to be traveled is likely to be ISPRS Int.…”

“…Our method can maximize the visibility of occluded FOIs while minimizing deformations to the landscape. occluded by those nearer the viewpoint [8]. As for car navigation applications, the route to be traveled is likely to be occluded by any surrounding high buildings.…”

Energy Consumption Improvement Through a Visualization Software

“…Human is used to dig into data instead of an algorithm. Usage of human expertise for digging into data is underlined by Rosen & Popescu (2011). This paper presents an efficient way to count items in a maze; the most important part is to use a smart camera to explore several corridors in the same view.…”