Kun Liu

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Processing point data is becoming more and more challenging due to the growing data volume. In this project, we address point data classification in a big data context. The popular cloud computing framework Apache Spark is used through the experiments and the promising results suggests a great potential of Apache Spark for large-scale point data processing. Read more...


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In this project, an interactive segmentation method for point clouds is proposed. Only two strokes need to be drawn intuitively to indicate the target object and the background respectively. Given the strokes, a weighted graph is built and the segmentation is formulated as a minimization problem which can be solved efficiently by using the Max Flow Min Cut algorithm. Read more...


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Point cloud refinement and surface reconstruction are two fundamental problems in geometry processing. Most of the existing methods have been targeted at range sensor data and turned out be ill-adapted to multi-view data. In this thesis, two novel methods are proposed respectively for the two problems with special attention to multi-view data. Read more...


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Surface reconstruction has long been targeted at scan data. With the rise of multi-view acquisition, existing surface reconstruction techniques often turn out to be ill adapted to the highly irregular sampling and multilayered aspect of such data. In this project, a novel surface reconstruction technique is developed to address these new challenges. Read more...


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Direct use of smoothing algorithms on point clouds originating from multi-view images is often oblivious to the reprojection error. This can be a severe limitation in applications which require accurate point tracking, e.g., metrology. In this project, we propose a method for improving the quality of such data without forfeiting the original matches. Read more...


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In the project, sparse temporal tracking data is acquired by using mutiple cameras. In order to reconstruct the object animation, a physical deformable model is introduced. The finite element method is also applied to solve the PDE produced by the model. Read more...