A Computational Approach to Edge Detection
IEEE Transactions on Pattern Analysis and Machine Intelligence
IEEE Computer Graphics and Applications
Modeling and rendering architecture from photographs: a hybrid geometry- and image-based approach
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
Superior augmented reality registration by integrating landmark tracking and magnetic tracking
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
Shadow algorithms for computer graphics
SIGGRAPH '77 Proceedings of the 4th annual conference on Computer graphics and interactive techniques
Recent Advances in Augmented Reality
IEEE Computer Graphics and Applications
Interactive Rendering with Real-World Illumination
Proceedings of the Eurographics Workshop on Rendering Techniques 2000
Rapid shadow generation in real-world lighting environments
EGRW '03 Proceedings of the 14th Eurographics workshop on Rendering
Consistent Illumination within Optical See-Through Augmented Environments
ISMAR '03 Proceedings of the 2nd IEEE/ACM International Symposium on Mixed and Augmented Reality
Photorealistic rendering for augmented reality using environment illumination
ISMAR '03 Proceedings of the 2nd IEEE/ACM International Symposium on Mixed and Augmented Reality
Fully Automated and Stable Registration for Augmented Reality Applications
ISMAR '03 Proceedings of the 2nd IEEE/ACM International Symposium on Mixed and Augmented Reality
ISMAR '03 Proceedings of the 2nd IEEE/ACM International Symposium on Mixed and Augmented Reality
Case study: observing a volume rendered fetus within a pregnant patient
VIS '94 Proceedings of the conference on Visualization '94
A real-time shadow approach for an augmented reality application using shadow volumes
Proceedings of the ACM symposium on Virtual reality software and technology
Cast shadow segmentation using invariant color features
Computer Vision and Image Understanding
Shadow identification and classification using invariant color models
ICASSP '01 Proceedings of the Acoustics, Speech, and Signal Processing, 2001. on IEEE International Conference - Volume 03
User evaluation of god-like interaction techniques
AUIC '08 Proceedings of the ninth conference on Australasian user interface - Volume 76
Hear-Through and Mic-Through Augmented Reality: Using Bone Conduction to Display Spatialized Audio
ISMAR '07 Proceedings of the 2007 6th IEEE and ACM International Symposium on Mixed and Augmented Reality
MixIn3D: 3D Mixed Reality with ToF-Camera
Dyn3D '09 Proceedings of the DAGM 2009 Workshop on Dynamic 3D Imaging
The shading probe: fast appearance acquisition for mobile AR
SIGGRAPH Asia 2013 Technical Briefs
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In the context of mixed reality, it is difficult to simulate shadow interaction between real and virtual objects when only an approximate geometry of the real scene and the light source is known. In this paper, we present a real-time rendering solution to simulate colour-consistent virtual shadows in a real scene. The rendering consists of a three-step mechanism: shadow detection, shadow protection and shadow generation. In the shadow detection step, the shadows due to real objects are automatically identified using the texture information and an initial estimate of the shadow region. In the next step, a protection mask is created to prevent further rendering in those shadow regions. Finally, the virtual shadows are generated using shadow volumes and a pre-defined scaling factor that adapts the intensity of the virtual shadows to the real shadow. The procedure detects and generates shadows in real time, consistent with those already present in the scene and offers an automatic and real-time solution for common illumination, suitable for augmented reality.