1,402 research outputs found
SynDrone -- Multi-modal UAV Dataset for Urban Scenarios
The development of computer vision algorithms for Unmanned Aerial Vehicles
(UAVs) imagery heavily relies on the availability of annotated high-resolution
aerial data. However, the scarcity of large-scale real datasets with
pixel-level annotations poses a significant challenge to researchers as the
limited number of images in existing datasets hinders the effectiveness of deep
learning models that require a large amount of training data. In this paper, we
propose a multimodal synthetic dataset containing both images and 3D data taken
at multiple flying heights to address these limitations. In addition to
object-level annotations, the provided data also include pixel-level labeling
in 28 classes, enabling exploration of the potential advantages in tasks like
semantic segmentation. In total, our dataset contains 72k labeled samples that
allow for effective training of deep architectures showing promising results in
synthetic-to-real adaptation. The dataset will be made publicly available to
support the development of novel computer vision methods targeting UAV
applications.Comment: Accepted at ICCV Workshops, downloadable dataset with CC-BY license,
8 pages, 4 figures, 8 table
Visual Clutter Study for Pedestrian Using Large Scale Naturalistic Driving Data
Some of the pedestrian crashes are due to driver’s late or difficult perception of pedestrian’s appearance. Recognition of pedestrians during driving is a complex cognitive activity. Visual clutter analysis can be used to study the factors that affect human visual search efficiency and help design advanced driver assistant system for better decision making and user experience. In this thesis, we propose the pedestrian perception evaluation model which can quantitatively analyze the pedestrian perception difficulty using naturalistic driving data. An efficient detection framework was developed to locate pedestrians within large scale naturalistic driving data. Visual clutter analysis was used to study the factors that may affect the driver’s ability to perceive pedestrian appearance. The candidate factors were explored by the designed exploratory study using naturalistic driving data and a bottom-up image-based pedestrian clutter metric was proposed to quantify the pedestrian perception difficulty in naturalistic driving data. Based on the proposed bottom-up clutter metrics and top-down pedestrian appearance based estimator, a Bayesian probabilistic pedestrian perception evaluation model was further constructed to simulate the pedestrian perception process
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