Tour generation for exploration of 3D virtual environments

Elmqvist, Niklas; Tudoreanu, M. Eduard; Tsigas, Philippas

doi:10.1145/1315184.1315224

Cited by 27 publications

(12 citation statements)

References 18 publications

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“…Camera trajectory planning is important for enabling users to explore and navigate in virtual environments without getting "lost in cyberspace". Cognitive aspects have also been addressed to ensure the proper memorization of entities in guided tours [ETT07]. Several other approaches based on motion planning have been explored [NO04], mostly focusing on geometric aspects such as collision avoidance (e.g., [LLCY99,SGLM03]), visibility of targets [OSTG09], smoothness [HZM13], or other descriptors, such as viewpoint entropy [SHAB12].…”

Section: Camera Controlmentioning

confidence: 99%

Trip Synopsis: 60km in 60sec

Huang

Lischinski

Hao³

et al. 2016

Computer Graphics Forum

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International audienceComputerized route planning tools are widely used today by travelers all around the globe, while 3D terrain and urban models are becoming increasingly elaborate and abundant. This makes it feasible to generate a virtual 3D flyby along a planned route. Such a flyby may be useful, either as a preview of the trip, or as an after-the-fact visual summary. However, a naively generated preview is likely to contain many boring portions, while skipping too quickly over areas worthy of attention. In this paper, we introduce 3D trip synopsis: a continuous visual summary of a trip that attempts to maximize the total amount of visual interest seen by the camera. The main challenge is to generate a synopsis of a prescribed short duration, while ensuring a visually smooth camera motion. Using an application-specific visual interest metric, we measure the visual interest at a set of viewpoints along an initial camera path, and maximize the amount of visual interest seen in the synopsis by varying the speed along the route. A new camera path is then computed using optimization to simultaneously satisfy requirements, such as smoothness, focus and distance to the route. The process is repeated until convergence. The main technical contribution of this work is a new camera control method, which iteratively adjusts the camera trajectory and determines all of the camera trajectory parameters, including the camera position, altitude, heading, and tilt. Our results demonstrate the effectiveness of our trip synopses, compared to a number of alternatives

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Section: Camera Controlmentioning

confidence: 99%

Trip Synopsis: 60km in 60sec

Huang

Lischinski

Hao³

et al. 2016

Computer Graphics Forum

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“…The tour generation algorithm presented by Elmqvist et al . [ETT07], like the Wayfinder system's algorithm, is based on a voxelized version of the 3D world. However, Elmqvist et al .…”

Section: Navigationmentioning

confidence: 99%

Advances in Interaction with 3D Environments

Jankowski

Hachet

2014

Computer Graphics Forum

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Various interaction techniques have been developed for interactive 3D environments. This paper presents an up‐to‐date and comprehensive review of the state of the art of non‐immersive interaction techniques for Navigation, Selection & Manipulation, and System Control, including a basic introduction to the topic, the challenges and an examination of a number of popular approaches. We also introduce 3D Interaction Testbed (3DIT) to firstly allow a ‘hands‐on' understanding of 3D interaction principles, and secondly to create an open platform for defining evaluation methods, stimuli as well as representative tasks akin to those found in other disciplines of science. We hope that this survey can aid both researchers and developers of interactive 3D applications in having a clearer overview of the topic and in particular can be useful for practitioners and researchers that are new to the field of interactive 3D graphics.

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“…Intuitive high level exhibition design is a difficult topic in which Elmqvist et al [17] and Chirrato et al [10] both provide systems that attempt to remedy user compatibility with exhibit creation and automatic tour generation, respectively. The first consists of automated indoor and outdoor navigation of arbitrary environments calculated using voxels and path finding algorithms.…”

Section: Virtual Exhibitsmentioning

confidence: 99%

Interactive exploration of historic information via gesture recognition

Bailey

Powell

Laycock

et al. 2012

2012 18th International Conference on Virtual Systems and Multimedia

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Developers of interactive exhibits often struggle to find appropriate input devices that enable intuitive control, permitting the visitors to engage effectively with the content. Recently motion sensing input devices like the Microsoft Kinect or Panasonic D-Imager have become available enabling gesture based control of computer systems. These devices present an attractive input device for exhibits since the user can interact with their hands and they are not required to physically touch any part of the system. In this thesis we investigate techniques to enable the raw data coming from these types of devices to be used to control an interactive exhibit. Object recognition and tracking techniques are used to analyse the user's hand where movement and clicks are processed. To show the effectiveness of the techniques the gesture system is used to control an interactive system designed to inform the public about iconic buildings in the centre of Norwich, UK. We evaluate two methods of making selections in the test environment.At the time of experimentation the technologies were relatively new to the image processing environment. As a result of the research presented in this thesis, the techniques and methods used have been detailed and published [3] at the VSMM (Virtual Systems and Multimedia 2012) conference with the intention of further forwarding the area.

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Tour generation for exploration of 3D virtual environments

Cited by 27 publications

References 18 publications

Trip Synopsis: 60km in 60sec

Trip Synopsis: 60km in 60sec

Advances in Interaction with 3D Environments

Interactive exploration of historic information via gesture recognition

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