Computer Vision

Structural modeling using depth sensors

Techniques are presented for constructing a digital representation of a physical environment. In some embodiments, a method includes obtaining image data indicative of the physical environment; receiving gesture input data from a user corresponding …

SSTT - Augmented Reality Tracking Library

Augmented Reality Tracking Library

Face tracking for additional modalities in spatial interaction

A user device receives an image stream from the user side of the user device and an image stream from a target side of the user device. The user device acquires a coordinate system for the user, acquires its own coordinate system, and relates the two …

Augmented Reality (AR) Capture and Play

Methods, systems, computer-readable media, and apparatuses for generating an Augmented Reality (AR) object are presented. The method may include capturing an image of one or more target objects, wherein the one or more target objects are positioned …

Towards user perspective augmented reality for public displays

We work towards ad-hoc augmentation of public displays on handheld devices, supporting user perspective rendering of display content. Our prototype system only requires access to a screencast of the public display, which can be easily provided …

A GPGPU accelerated descriptor for mobile devices

We present a modified upright SURF feature descriptor for mobile phone GPUs. Our implementation called uSURF-ES is multiple times faster than a comparable CPU variant on the same device. Our results proof the feasibility of modern mobile graphics …

Experiences with the Impact of Tracking Technology in Mobile Augmented Reality Evaluations

In this paper, we discuss the impact of tracking technology on user studies of mobile augmented reality applications. We present findings from several of our previous publications in the field, discussing how tracking technology can impact, influence …

OmniKinect: real-time dense volumetric data acquisition and applications

Real-time three-dimensional acquisition of real-world scenes has many important applications in computer graphics, computer vision and human-computer interaction. Inexpensive depth sensors such as the Microsoft Kinect allow to leverage the …

Augmented visualization with natural feature tracking

Visualization systems often require large monitors or projection screens to display complex information. Even very sophisticated systems that exhibit complex user interfaces do usually not exploit advanced input and output devices. One of the reasons …

A Quadratic Deformation Model for Facial Expression Recognition

In this paper, we propose a novel approach for recognizing facial expressions based on using an Active Appearance Model facial feature tracking system with the quadratic deformation model representations of facial expressions. Thirty seven Facial …