scholarly journals Improved Path Detection in Tracking of Moving and Stationary objects in Moving Cameras

2017 ◽  
Vol 12 (03) ◽  
pp. 51-61
Author(s):  
Harihara Santosh Dadi ◽  
Gopala Krishna Mohan Pillutla ◽  
Madhavi Latha M
2011 ◽  
Vol 42 (3) ◽  
pp. 225-230 ◽  
Author(s):  
Janet B. Ruscher

Two distinct spatial metaphors for the passage of time can produce disparate judgments about grieving. Under the object-moving metaphor, time seems to move past stationary people, like objects floating past people along a riverbank. Under the people-moving metaphor, time is stationary; people move through time as though they journey on a one-way street, past stationary objects. The people-moving metaphor should encourage the forecast of shorter grieving periods relative to the object-moving metaphor. In the present study, participants either received an object-moving or people-moving prime, then read a brief vignette about a mother whose young son died. Participants made affective forecasts about the mother’s grief intensity and duration, and provided open-ended inferences regarding a return to relative normalcy. Findings support predictions, and are discussed with respect to interpersonal communication and everyday life.


2021 ◽  
Vol 13 (13) ◽  
pp. 2643
Author(s):  
Dário Pedro ◽  
João P. Matos-Carvalho ◽  
José M. Fonseca ◽  
André Mora

Unmanned Autonomous Vehicles (UAV), while not a recent invention, have recently acquired a prominent position in many industries, and they are increasingly used not only by avid customers, but also in high-demand technical use-cases, and will have a significant societal effect in the coming years. However, the use of UAVs is fraught with significant safety threats, such as collisions with dynamic obstacles (other UAVs, birds, or randomly thrown objects). This research focuses on a safety problem that is often overlooked due to a lack of technology and solutions to address it: collisions with non-stationary objects. A novel approach is described that employs deep learning techniques to solve the computationally intensive problem of real-time collision avoidance with dynamic objects using off-the-shelf commercial vision sensors. The suggested approach’s viability was corroborated by multiple experiments, firstly in simulation, and afterward in a concrete real-world case, that consists of dodging a thrown ball. A novel video dataset was created and made available for this purpose, and transfer learning was also tested, with positive results.


2008 ◽  
Vol 41 (2) ◽  
pp. 7320-7325 ◽  
Author(s):  
Ping-Chou Lu ◽  
Syh-Shiuh Yeh
Keyword(s):  
Ink Jet ◽  

Sensors ◽  
2021 ◽  
Vol 21 (20) ◽  
pp. 6781
Author(s):  
Tomasz Nowak ◽  
Krzysztof Ćwian ◽  
Piotr Skrzypczyński

This article aims at demonstrating the feasibility of modern deep learning techniques for the real-time detection of non-stationary objects in point clouds obtained from 3-D light detecting and ranging (LiDAR) sensors. The motion segmentation task is considered in the application context of automotive Simultaneous Localization and Mapping (SLAM), where we often need to distinguish between the static parts of the environment with respect to which we localize the vehicle, and non-stationary objects that should not be included in the map for localization. Non-stationary objects do not provide repeatable readouts, because they can be in motion, like vehicles and pedestrians, or because they do not have a rigid, stable surface, like trees and lawns. The proposed approach exploits images synthesized from the received intensity data yielded by the modern LiDARs along with the usual range measurements. We demonstrate that non-stationary objects can be detected using neural network models trained with 2-D grayscale images in the supervised or unsupervised training process. This concept makes it possible to alleviate the lack of large datasets of 3-D laser scans with point-wise annotations for non-stationary objects. The point clouds are filtered using the corresponding intensity images with labeled pixels. Finally, we demonstrate that the detection of non-stationary objects using our approach improves the localization results and map consistency in a laser-based SLAM system.


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