Please use this identifier to cite or link to this item: http://arks.princeton.edu/ark:/88435/dsp017w62fb54k
 Title: LEARNING TO MERGE: LEARNING IMPROVED SEGMENTATIONS FOR URBAN LIDAR DATA Authors: Dohan, David Advisors: Funkhouser, Thomas Department: Computer Science Class Year: 2015 Abstract: We explore methods for improving per-class segmentation of 3D point clouds of urban environments with the goal to improve semantic segmentation results. Speci cally, we implement a system which starts with an oversegmentation of a point cloud and produces per-point and per-segment semantic class labels. To aid segmentwise predictions, we present a supervised method which learns to hierarchically group segments from the oversegmentation into supersegments which can be more accurately classi ed than the individual segments alone. We evaluate this method based on improvements to the initial oversegmentation and the classi cation accuracy over alternative approaches, including a region pro- posal algorithm. We nd that it improves segmentation results, but does not always improve semantic segmentation performance. Extent: 28 pages URI: http://arks.princeton.edu/ark:/88435/dsp017w62fb54k Type of Material: Princeton University Senior Theses Language: en_US Appears in Collections: Computer Science, 1988-2016

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