Mobile real-time single image 3D corridor reconstruction using J-Linkage

We present a real-time algorithm that reconstructs 3D models of corridors using a mobile device. Contrary to previous approaches, our approach uses a noniterative, simultaneous model reconstruction method called J-Linkage, which is both accurate in parameter estimation and efficient in computation. We first use J-Linkage to find the vanishing points in a scene, and then show how the detected vanishing points along with corresponding straight line edges can be used to accurately determine the important features of a corridor, such as doors. Finally, we show how this approach has advantages in both speed and accuracy when compared with previous solutions. Implementation in a mobile computing device is carried out and experimental results are provided. The ability to model 3D representations of corridors in real-time on a mobile device can be used in a range of applications including mobile apps to help the visually impaired navigate, robotic navigation, building inspection, and virtual tours.