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First Autonomous Multi-Room Exploration with an Insect-Inspired Flapping Wing Vehicle

Kirk Y.W. Scheper, Matej Karasek, Christophe De Wagter, Bart D.W Remes, Guido C.H.E De Croon
2018 2018 IEEE International Conference on Robotics and Automation (ICRA)  
During the room exploration, the vehicle uses stereo-vision based droplet algorithm to avoid and navigate along the walls and obstacles.  ...  Equipped with an on-board autopilot and a 4 g stereo vision system, the DelFly Explorer succeeded in combining the two most common tasks of an autonomous indoor exploration mission: room exploration and  ...  As a result, motion blur in the on-board cameras is significantly limited, which makes this flapping wing platform well suited for vision-based autonomy.  ... 
doi:10.1109/icra.2018.8460702 dblp:conf/icra/ScheperKWRC18 fatcat:rr42hrk4ebb3jcd2gdjdmdu32a

Applications and Prospects of Agricultural Unmanned Aerial Vehicle Obstacle Avoidance Technology in China

Linlin Wang, Yubin Lan, Yali Zhang, Huihui Zhang, Muhammad Naveed Tahir, Shichao Ou, Xiaotao Liu, Pengchao Chen
2019 Sensors  
In those agricultural areas where ground-based machinery have difficulties in executing farming operations, agricultural UAVs have shown obvious advantages.  ...  In visual obstacle avoidance, monocular visual ranging mostly uses the measurement method based on given motion, which is to use the moving information and the images captured by the camera to measure  ...  The aircraft hovers accurately at 50 m based on visual aids and lands safely by detecting land.  ... 
doi:10.3390/s19030642 fatcat:6pultew3jzgbfctdl4pczducku

PHIPS-HALO: The airborne Particle Habit Imaging and Polar Scattering probe. Part I: Design and Operation

Ahmed Abdelmonem, Emma Järvinen, Denis Duft, Edwin Hirst, Steffen Vogt, Thomas Leisner, Martin Schnaiter
2016 Atmospheric Measurement Techniques Discussions  
The measured size distribution and the assumed particle shape might be erroneous in case of non-spherical ice particles.  ...  For evaluating the average scattering phase function as a function of ice particle habit and crystal complexity in-situ measurements are required.  ...  The two images for the same particle at two different angles give sense of the 35 3D morphology in a similar manner to the human stereo vision.  ... 
doi:10.5194/amt-2016-42 fatcat:x3h3xvoamfdlfn43dg4lvi3gfy

PHIPS–HALO: the airborne Particle Habit Imaging and Polar Scattering probe – Part 1: Design and operation

Ahmed Abdelmonem, Emma Järvinen, Denis Duft, Edwin Hirst, Steffen Vogt, Thomas Leisner, Martin Schnaiter
2016 Atmospheric Measurement Techniques  
The measured size distribution and the assumed particle shape might be erroneous in case of non-spherical ice particles.  ...  For evaluating the average scattering phase function as a function of ice particle habit and crystal complexity, in situ measurements are required.  ...  The two images for the same particle at two different angles provide an impression of the 3-D morphology similar to the human stereo vision.  ... 
doi:10.5194/amt-9-3131-2016 fatcat:ivurxzyinnd3xd7kbeqsqenud4

Real-time 3D Pose Estimation with a Monocular Camera Using Deep Learning and Object Priors On an Autonomous Racecar [article]

Ankit Dhall
2018 arXiv   pre-print
Further, a priori 3D information about the object is used to match 2D-3D correspondences and accurately estimate object positions up to a distance of 15m.  ...  It employed weak learners to accurately detect faces using Haar-based features.  ...  While the stereo pipeline provides extremely accurate cone positions via triangulation, the monocular pipeline extends the range for the computer vision perception system.  ... 
arXiv:1809.10548v1 fatcat:5takrrvz5zfc3bjvkd3bvgbtaa

Centripetal Acceleration Reaction: An Effective and Robust Mechanism for Flapping Flight in Insects

Chao Zhang, Tyson L. Hedrick, Rajat Mittal, Sharon Swartz
2015 PLoS ONE  
This force mechanism also has broad implications for flow-induced deformation and vibration, underwater locomotion and flows involving bubbles and droplets.  ...  Application of the FPM to hawkmoth and fruit fly flight shows that the leading-edge vortex is the dominant mechanism for lift generation for both these insects and contributes between 72-85% of the net  ...  second-order accurate in both space and time.  ... 
doi:10.1371/journal.pone.0132093 pmid:26252016 pmcid:PMC4529139 fatcat:723wuv25fjgu7forasdyxjjlpu

Survey of Datafusion Techniques for Laser and Vision Based Sensor Integration for Autonomous Navigation

Prasanna Kolar, Patrick Benavidez, Mo Jamshidi
2020 Sensors  
We present a survey of the current data processing techniques that implement data fusion using different sensors like LiDAR that use light scan technology, stereo/depth cameras, Red Green Blue monocular  ...  Such systems can be used in various areas of life like safe mobility for the disabled, senior citizens, and so on and are dependent on accurate sensor information in order to function optimally.  ...  Vision-Based Localization Sensors mounted on the robot provide the latest and accurate data concerning the robot.  ... 
doi:10.3390/s20082180 pmid:32290582 pmcid:PMC7218742 fatcat:ngfckkvp3fc23o7idvivlhdzbq

An Overview of Autonomous Vehicles Sensors and Their Vulnerability to Weather Conditions

Jorge Vargas, Suleiman Alsweiss, Onur Toker, Rahul Razdan, Joshua Santos
2021 Sensors  
Autonomous vehicles (AVs) rely on various types of sensor technologies to perceive the environment and to make logical decisions based on the gathered information similar to humans.  ...  In order to accomplish this, a combination of stereo vision techniques can be used [60] .  ...  VIS cameras (e.g., monocular vision [18] [19] [20] [21] and stereo vision [22, 23] ) capture wavelengths that ranges from 400 to 780 nm, similarly to human eyes.  ... 
doi:10.3390/s21165397 pmid:34450839 pmcid:PMC8400151 fatcat:fy2wdpfxx5gxfc2mty2hfmdl34

Binocular Mirror-Symmetric Microsaccadic Sampling of Hyperacute 3D-Vision [article]

Joni Kemppainen, Ben Scales, Keivan Razban Haghighi, Jouni Takalo, Neveen Mansour, James McManus, Gabor Lego, Paulus Saari, James Hurcomb, Andra Antohi, Jussi-Petteri Suuronen, Florence Blanchard (+11 others)
2021 bioRxiv   pre-print
We further show how peripherally, outside stereopsis, microsaccadic sampling tracks a forward flying fly's optic flow field to better resolve the world in motion.  ...  These results change our understanding of how insect compound eyes work and suggest a general dynamic stereo-information sampling strategy for animals, robots and sensors.  ...  Here, we suggest a new dynamic depth estimation method (fig. S54 ) based on an object moving in the stereo field.  ... 
doi:10.1101/2021.05.03.442473 fatcat:6bxsx3bscffq5pip7mrshcskku

UAV for Agrochemical Application: A Review

U.E. Uche, S. T. Audu
2022 Nigerian Journal of Technology  
Further, in sensing depth especially of frontal obstacles, studies have been on mimicking biological systems such as motion parallax, monocular cues and stereo vision [55] .  ...  update the models and account for the noise introduced by both the movement of the device and the inaccuracy of the measurement method.  ... 
doi:10.4314/njt.v40i5.5 fatcat:dp5jsajzfregzevfpdhxyynquu

Data acquisition and simulation of natural phenomena

QinPing Zhao
2011 Science China Information Sciences  
Firstly, we briefly introduce the basic methods and techniques concerned, then, based on the difference between the basic elements of various natural phenomena, we discuss the current studies on such natural  ...  obtained through mathematical-physical modeling and simulation as well as graphics emulation can meet the user's requirements for sensory experiences to a certain extent but they can hardly have the same accurate  ...  Garg [5] designed a structured light method for measuring 3D trajectories of splashing water droplets. The measuring gantry is shown in Figure 4 -2.  ... 
doi:10.1007/s11432-011-4210-2 fatcat:ae76y2a2yba3zi7kjnt7woftre

Automated Tracking of Animal Posture and Movement during Exploration and Sensory Orientation Behaviors

Alex Gomez-Marin, Nicolas Partoune, Greg J. Stephens, Matthieu Louis, Holger G. Krapp
2012 PLoS ONE  
To illustrate the utility of SOS, we examine the orientation behavior of fruit fly larvae in response to odor, temperature and light gradients.  ...  Accordingly, computer-vision applications for animal tracking are becoming a key complementary toolkit to genetic, molecular and electrophysiological characterization in systems neuroscience.  ...  We also thank Gus Lott, Rex Kerr, and Ev Yemini for discussion about computer-vision algorithms for animal tracking.  ... 
doi:10.1371/journal.pone.0041642 pmid:22912674 pmcid:PMC3415430 fatcat:7sh6ukfuurendfqifenhxwyvfq

Depth-Fused 3D Imagery on an Immaterial Display

Cha Lee, S. DiVerdi, T. Hollerer
2009 IEEE Transactions on Visualization and Computer Graphics  
Based on these results, we developed a prototype display using one or two immaterial screens to create an unencumbered 3D visual that users can penetrate, examining the potential for direct walk-through  ...  Carefully controlled falling water droplets have even been used to scatter projector light in a 3D volume, as in Eitoku et al. display [11] .  ...  Each image that appears on a virtual screen has to be computed on the fly in 2D, and the final scene has to be rendered in stereo.  ... 
doi:10.1109/tvcg.2008.83 pmid:19008553 fatcat:ibp4kcl6lrhxxlleuikzlyf2mi

A Multi-purpose Real Haze Benchmark with Quantifiable Haze Levels and Ground Truth [article]

Priya Narayanan, Xin Hu, Zhenyu Wu, Matthew D Thielke, John G Rogers, Andre V Harrison, John A D'Agostino, James D Brown, Long P Quang, James R Uplinger, Heesung Kwon, Zhangyang Wang
2022 arXiv   pre-print
These datasets are required to evaluate state-of-the-art object recognition and other computer vision algorithms in degraded settings.  ...  In this paper, we address some of these limitations by introducing the first paired real image benchmark dataset with hazy and haze-free images, and in-situ haze density measurements.  ...  Existing approaches for dehazing can be broadly categorized as prior-based methods and learning-based methods. 1) Prior-based Methods: Dehazing methods based on priors [12] - [19] first estimate transmission  ... 
arXiv:2206.06427v2 fatcat:ycsym3tyibblnoize3vlsnsrzu

Methods for Panoramic Visualization and Digital Analysis of Thermophysical Flow Fields. A Review
Методы панорамной визуализации и цифрового анализа теплофизических полей. Обзор

I.A. Znamenskaya
2021 Scientific Visualization  
Those are: digital tracing (PIV), shadow background method (in English Background Oriented Schlieren -BOS), seedless shadow methods, thermographic PIV, velocity measurement in viscous coatings, micro,  ...  The review contains an analysis of publications describing the main modern methods of visualization of flows: methods based on the phenomenon of refraction; electroluminescence; on digital tracing (particle  ...  Volumetric methods for studying the kinematic structure of a flow include Stereo Particle Image Velocimetry (Stereo PIV), Tomographic Particle Image Velocimetry (Tomographic PIV), etc.  ... 
doi:10.26583/sv.13.3.13 fatcat:uj4jslqqg5cgbgcjamhjbmn57q
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