Research Projects (2004)
- Show Keywords
- 3D Computer Vision 3D reconstruction Aerial Vision Augmented Reality Augmented Video Best Paper Award Biometrics Caleydo Computational Photography Computer Graphics Computer Vision Convex Optimization Coordinate transformations detection face Fingerprint Georeferencing GPU GUI HOG Human Computer Interaction Image Labelling Industrial Applications Information Visualization integral imaging Interaction Interaction Design Machine Learning Medical computer vision Medical Visualization Mixed Reality Mobile computing Mobile phone Model Multi-Display Environments Multiple Perspectives Object detection Object recognition Object reconstruction Object Tracking On-Line Learning Robotics Segmentation Shape analysis shape from focus SLAM Software Projects Structure from Motion Surveillance SVM Symmetry Tracking Fusion Tracking, Action Recognition User Interfaces Variational Methods Virtual reality and augmented reality Visual Tracking Visualization
Dust Filter Surface Analysis
When a dust laden gas is sucked through a filter, the dust remains on its surface and forms a compact dust layer called filter cake. Periodically the filter cake is at least partially removed by inverse high pressure air pulses to allow continuous operation of the filter. Knowledge of the distribution of the filter cake on the filter surface at different stages of operation is decisive for filter operation. It is shown that the principle of calibrated shape from stereo with pattern projection for generating texture on the surface gives a robust 3D reconstruction of the filter surface when accessing through a glass window. Rigid registration of surface patches using landmark points, combined with an Iterative Closest Point Algorithm as a refinement procedure gives a continuous 3D model of the entire visible filter surface. Cake thickness is calculated by taking the height difference of two surface models, acquired before and after dust deposition. The challenging problem is to account for the non-rigid deformation of the filter cloth. A global deformation model is estimated using Thin Plate Spline Interpolation based on landmark points on the filter surface.