Research Output 1999 2020

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Article in proceeding
2012
1 Citation (Scopus)

Shape Perception in 3-D Scatterplots Using Constant Visual Angle Glyphs

Stenholt, R. & Madsen, C. B., 4 Mar 2012, Virtual Reality Short Papers and Posters (VRW), 2012 IEEE. IEEE, p. 61-62 2 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Virtual reality
Visualization
702 Downloads (Pure)

Software-Based Adjustment of Mobile Autostereoscopic Graphics Using Static Parallax Barriers

Paprocki, M. M., Krog, K. S., Kristoffersen, M. B. & Kraus, M., 2012, Proceedings of the Working Conference on Advanced Visual Interfaces: AVI 2012. Tortora, G., Levialdi, S. & Tucci, M. (eds.). Association for Computing Machinery, p. 295-298 4 p. (Proceedings of the International Working Conference on Advanced Visual Interfaces).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File
Display devices
Pixels
Mobile devices
18 Citations (Scopus)
590 Downloads (Pure)

Subjective and Objective Quality Assessment of Single-Channel Speech Separation Algorithms

Mowlaee, P., Saeidi, R., Christensen, M. G. & Martin, R., 2012, Acoustics, Speech and Signal Processing (ICASSP), 2012 IEEE International Conference on. IEEE Press, p. 69-72 4 p. (I E E E International Conference on Acoustics, Speech and Signal Processing. Proceedings).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
File
Source separation
Speech intelligibility
Speech recognition
Blind source separation
Experiments
4 Citations (Scopus)
185 Downloads (Pure)

Tapping Into Local Lore: Toward Scalable Local Mapping and Tagging for Rural Africa Using Mobile Devices

Jensen, K. L., Winschiers-Theophilus, H. & Rodil, K., 14 Oct 2012, NordiCHI '12: Proceedings of the 7th Nordic Conference on Human-Computer Interaction: Making Sense Through Design. Association for Computing Machinery, p. 631-634 4 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File
Mobile devices
Scalability
Sensors
3 Downloads (Pure)

Text is not the enemy-How illiterates use their mobile phones

Knoche, H. & Huang, J., 2012, NUI workshop.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
File
1 Citation (Scopus)

TouchPosing: multi-modal interaction with geospatial data

Daiber, F., Gehring, S., Löchtefeld, M. & Krüger, A., 2012, Proceedings of the 11th International Conference on Mobile and Ubiquitous Multimedia. p. 8 1 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

16 Citations (Scopus)
831 Downloads (Pure)

Traffic sign detection and analysis: Recent studies and emerging trends

Møgelmose, A., Trivedi, M. M. & Moeslund, T. B., 16 Sep 2012, 15th International IEEE Conference on Intelligent Transportation Systems. IEEE, p. 1310-1314

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File
Traffic signs
143 Downloads (Pure)

Two Shared Rapid Turn Taking Sound Interfaces for Novices

Hansen, A-M., Andersen, H. J. & Raudaskoski, P. L., 21 May 2012, Proceedings of 12th International Conference on New Interfaces for Musical Expression. 4 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File
Acoustic waves
Fuzzy logic
Pattern recognition
Experiments
17 Citations (Scopus)
631 Downloads (Pure)

Two-Stage Part-Based Pedestrian Detection

Møgelmose, A., Prioletti, A., Trivedi, M. M., Broggi, A. & Moeslund, T. B., 16 Sep 2012, 15th International Conference on Intelligent Transportation Systems. IEEE, p. 73 - 77

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
File
Classifiers
Lighting
Detectors
10 Citations (Scopus)
287 Downloads (Pure)

Urban vibrations: Sensitivities in the field with a broad demographic

Morrison, A., Knudsen, L. & Andersen, H. J., Jun 2012, 16th IEEE International Symposium on Wearable Computers: ISWC 2012. IEEE Computer Society Press, p. 76-79 4 p. (International Symposium on Wearable Computers. Proceedings).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File
vibration
sensitivity
1 Citation (Scopus)
545 Downloads (Pure)

User-Centered Design of GPU-Based Shader Programs

Kraus, M., 2012, Proceedings of the International Conference on Computer Graphics Theory and Applications: GRAPP 2012. Richard, R. & Braz, J. (eds.). Portugal: Institute for Systems and Technologies of Information, Control and Communication, p. 248-253 6 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File
Graphical user interfaces
Engines
User centered design
Graphics processing unit
1 Citation (Scopus)
978 Downloads (Pure)

Using Human Motion Intensity as Input for Urban Design

Poulsen, E. S., Andersen, H. J., Gade, R., Jensen, O. B. & Moeslund, T. B., 2012, Constructing Ambient Intelligence. Amsterdam: Springer, Vol. 277. p. 128-136 9 p. (Communications in Computer and Information Science, Vol. 277).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File
7 Citations (Scopus)

Using intelligent natural user interfaces to support sales conversations

Gehring, S., Löchtefeld, M., Daiber, F., Böhmer, M. & Krüger, A., 2012, Proceedings of the 2012 ACM international conference on Intelligent User Interfaces. p. 97-100 4 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

5 Citations (Scopus)
4 Downloads (Pure)

Violin-Related HCI: A Taxonomy Elicited by the Musical Interface Technology Design Space

Overholt, D., 2012, Arts and Technology: Second International Conference, ArtsIT 2011, Esbjerg, Denmark, December 7-8, 2011, Revised Selected Papers. Brooks, A. L. (ed.). Springer, p. 80-89 10 p. (Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering (LNICST), Vol. 101).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Acoustics
Violin
Taxonomy
Human-computer Interaction
Sound

Virtual Savannah: In Situ Test of a Virtual Learning 3D Visualization for children

Rodil, K., Eskildsen, S. & Rehm, M., Sep 2012, Applied Playfulness: Proceedings of the Vienna Games Conference 2011: Future and Reality of Gaming. Mitgutsch, K., Rosenstingl, H. & Wimmer, J. (eds.). New Academic Press, p. 67-74 6 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

visualization
learning
knowledge
ecology
video
2 Citations (Scopus)

Visualizing learner activities with a virtual learning environment: Experiences from an in situ test with school children

Eskildsen, S., Rodil, K. & Rehm, M., 2012, 12th IEEE International Conference on Advanced Learning Technologies. IEEE Computer Society Press, p. 660-661 2 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Navigation
2013
3 Citations (Scopus)
112 Downloads (Pure)

ACTION RECOGNITION USING SALIENT NEIGHBORING HISTOGRAMS

Ren, H. & Moeslund, T. B., 2013, IEEE International Conference on Image Processing. IEEE Signal Processing Society, p. 2807-2811 5 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
File
Sports
7 Citations (Scopus)
1283 Downloads (Pure)

An Autonomous Robotic System for Mapping Weeds in Fields

Hansen, K. D., Garcia Ruiz, F. J., Kazmi, W., Bisgaard, M., la Cour-Harbo, A., Rasmussen, J. & Andersen, H. J., 2013, 8th IFAC Symposium on Intelligent Autonomous Vehicles, 2013. Elsevier, Vol. 8. p. 217-224 7 p. (I F A C Workshop Series).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File
Robotics
Sugar beets
Unmanned vehicles
Ground vehicles
Computer vision
1 Citation (Scopus)
237 Downloads (Pure)

An Exact Subspace Method for Fundamental Frequency Estimation

Christensen, M. G., 2013, 2013 IEEE International Conference on Acoustics, Speech, and Signal Processing. IEEE Signal Processing Society, p. 6802-6806 5 p. (I E E E International Conference on Acoustics, Speech and Signal Processing. Proceedings).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
File
6 Citations (Scopus)
484 Downloads (Pure)

An Interactive Visualization of the Past using a Situated Simulation Approach

Madsen, J. B. & Madsen, C. B., 2013, Proceedings of the 2013 Digital Heritage International Congress. C. Addison, A., Guidi, G., De Luca, L. & Pescarin, S. (eds.). IEEE, Vol. 1. p. 307-314 8 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File
Visualization
Museums
Religious buildings
Relocation
Augmented reality
308 Downloads (Pure)

An LCMV Filter for Single-Channel Noise Cancellation and Reduction in the Time Domain

Jensen, J. R., Benesty, J., Christensen, M. G. & Chen, J., 2013, 2013 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA). IEEE, p. 1-4 (I E E E Workshop on Applications of Signal Processing to Audio and Acoustics).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File
Speech enhancement
Signal to noise ratio
25 Citations (Scopus)

AppDetox: helping users with mobile app addiction

Löchtefeld, M., Böhmer, M. & Ganev, L., 2013, Proceedings of the 12th international conference on mobile and ubiquitous multimedia. p. 43 1 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

3 Citations (Scopus)
639 Downloads (Pure)

Are Haar-like Rectangular Features for Biometric Recognition Reducible?

Nasrollahi, K. & Moeslund, T. B., 2013, Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications. Ruiz-Shulcloper, J. & Sanniti di Baja, G. (eds.). Springer Berlin Heidelberg: Springer Publishing Company, Vol. 8259. p. 334-341 (Lecture Notes in Computer Science).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File
Biometrics
Degradation
Sensitivity analysis
Lighting
4 Citations (Scopus)

Augmented reality-based advertising strategies for paper leaflets

Löchtefeld, M., Böhmer, M., Daiber, F. & Gehring, S., 2013, Proceedings of the 2013 ACM conference on Pervasive and ubiquitous computing adjunct publication. p. 1015-1022 8 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

11 Citations (Scopus)
561 Downloads (Pure)

Bayesian Model Comparison and the BIC for Regression Models

Nielsen, J. K., Christensen, M. G. & Jensen, S. H., 2013, Proceedings of the 2013 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP): ICASSP. IEEE Press, p. 6362-6366 5 p. (I E E E International Conference on Acoustics, Speech and Signal Processing. Proceedings).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
File

Bringing Performance Art into Everyday Life Situations

Hansen, A-M., 15 Mar 2013, Proceedings from Experiencing Interactivity in Public Spaces (EIPS): Workshop at CHI'13. p. 34-38 5 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Embedded systems
Patient rehabilitation
Sensors

Challenges for Contextualizing Language Learning

Eskildsen, S. & Rehm, M., 2013, Human-Computer Interaction. Applications and Services: 15th International Conference, HCI International 2013, Las Vegas, NV, USA, July 21-26, 2013, Proceedings, Part II. Kurosu, M. (ed.). Part III ed. Springer Berlin Heidelberg: Springer Publishing Company, Vol. 8005. p. 361-369 9 p. (Lecture Notes in Computer Science (LNCS)).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

376 Downloads (Pure)

COSIATEC and SIATECCompress: Pattern discovery by geometric compression

Meredith, D., 2013, Music Information Retrieval Evaluation eXchange (MIREX 2013). Curitiba, Brazil: International Society for Music Information Retrieval, 6 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
File
Equivalence classes
10 Citations (Scopus)
289 Downloads (Pure)

Estimating Multiple Pitches Using Block Sparsity

Adalbjörnsson, S. I., Jakobsson, A. & Christensen, M. G., 2013, 2013 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, p. 6220-6224 5 p. (I E E E International Conference on Acoustics, Speech and Signal Processing. Proceedings).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
File
15 Citations (Scopus)

Evaluation of hybrid front-and back-of-device interaction on mobile devices

Löchtefeld, M., Hirtz, C. & Gehring, S., 2013, Proceedings of the 12th International Conference on Mobile and Ubiquitous Multimedia. p. 17 1 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

8 Citations (Scopus)

Fast Calibration of Industrial Mobile Robots to Workstations using QR Codes

Andersen, R. S., Damgaard, J. S., Madsen, O. & Moeslund, T. B., 2013, Proceedings of the 44th International Symposium on Robotics ISR 2013. IEEE Press, 6 p. won the prize: Best paper at ISR 2013

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

6 Citations (Scopus)
464 Downloads (Pure)

From multicultural agents to culture‐aware robots

Rehm, M., 2013, Human-Computer Interaction. Human-Centred Design Approaches, Methods, Tools, and Environments: 15th International Conference, HCI International 2013, Las Vegas, NV, USA, July 21-26, 2013, Proceedings, Part III. Kurosu, M. (ed.). Springer Publishing Company, p. 431-440 10 p. (Lecture Notes in Computer Science (LNCS)).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
File
Robots
Robotics
Communication
Statistical Models
6 Citations (Scopus)
719 Downloads (Pure)

Haar-like Features for Robust Real-Time Face Recognition

Nasrollahi, K. & Moeslund, T. B., 15 Sep 2013, IEEE International Conference on Image Processing. IEEE Signal Processing Society

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File
Face recognition
Feature extraction
Classifiers
Cameras
3 Citations (Scopus)
635 Downloads (Pure)

Haar-like Rectangular Features for Biometric Recognition

Nasrollahi, K., Moeslund, T. B. & Rashidi, M., 4 Jun 2013, International Conference on Biometrics. IEEE

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File
Biometrics
Classifiers
Degradation
5 Citations (Scopus)
279 Downloads (Pure)

HomesteadCreator: Using card sorting in search for culture-aware categorizations of interface objects

Rodil, K., Rehm, M. & Winschiers-Theophilus, H., Sep 2013, Human-Computer Interaction – INTERACT 2013. Kotze, P., Marsden, G., Lindgaard, G., Wesson, J. & Winkler, M. (eds.). Springer Berlin Heidelberg: Springer Publishing Company, Vol. 8117. p. 437-444 8 p. (Lecture Notes in Computer Science).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File
Sorting

Human Assisted Computer Vision on Industrial Mobile Robots

Andersen, R. S., Schou, C., Damgaard, J. S., Madsen, O. & Moeslund, T. B., 2013, Proceedings of 1st AAU Workshop on Human-Centered Robotics. Bai, S., Larsen, J. A., Madsen, O. & Rehm, M. (eds.). 1 ed. Aalborg Universitetsforlag, Vol. 1. 7 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

1 Citation (Scopus)
217 Downloads (Pure)

Identifying and Representing Elements of Local Contexts in Namibia

Rodil, K., Løvborg Jensen, K., Rehm, M. & Winschiers-Theophilus, H., Jul 2013, Proceedings of 15th International Conference on Human Computer Interaction. Kurosu, M. (ed.). Springer Berlin Heidelberg: Springer Publishing Company, Vol. 8006. p. 332-341 10 p. (Lecture Notes in Computer Science).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File
evaluation
293 Downloads (Pure)

Information technology for sustainable development: a problem based and project oriented approach

Holgaard, J. E., Guerra, A., Knoche, H., Kolmos, A. & Andersen, H. J., 2013, Re-Thinking the Engineer. Engineering Education for Sustainable Development 2013, University of Cambridge, UK, 8 p. 21

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File

Investigating the relationship between pressure force and acoustic waveform in footstep sounds

Grani, F., Serafin, S., Götzen, A. D., Overholt, D. & Topel, S., 2013, Digital Signal Processing (DSP) 2013. IEEE, p. 1-5 5 p. (Digital Signal Processing).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Acoustics
Acoustic waves
Pressure sensors
Gravel
Wood
6 Citations (Scopus)
240 Downloads (Pure)

Joint DOA and Fundamental Frequency Estimation based on Relaxed Iterative Adaptive Approach and Optimal Filtering

Zhou, Z., Christensen, M. G., Jensen, J. R. & So, H. C., 2013, 2013 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 5 p. (I E E E International Conference on Acoustics, Speech and Signal Processing. Proceedings).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
File

Joint evaluation of communication quality and user experience in an audio-visual virtual reality meeting

Møller, A. K., Hoffmann, P. F., Carrozzino, M., Faita, C., Avveduto, G., Tecchia, F., Christensen, F. & Hammershøi, D., 2013, Proceedings of 4th International Workshop on Perceptual Quality of Systems - PQS 2013. Schatz, R. & Hossfeld, T. (eds.). p. 151-157 6 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Speech intelligibility
Virtual reality
Communication
Telecommunication
Acoustics
22 Citations (Scopus)
445 Downloads (Pure)

Long-Term Occupancy Analysis using Graph-Based Optimisation in Thermal Imagery

Gade, R., Jørgensen, A. & Moeslund, T. B., Jun 2013, IEEE conference on Computer Vision and Pattern Recognition. IEEE Computer Society Press, p. 3698-3705 (I E E E Conference on Computer Vision and Pattern Recognition. Proceedings).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File

Low-Cost Simulation of Robotic Surgery

Grande, K., Jensen, R. S., Kraus, M. & Kibsgaard, M., 2013, Proceedings of the Virtual Reality International Conference: Laval Virtual (VRIC '13). Laval, France: Association for Computing Machinery, p. 6:1-6:4 4 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Display devices
Surgery
Surgical equipment
Costs
Simulators
2 Citations (Scopus)
273 Downloads (Pure)

Maximal translational equivalence classes of musical patterns in point-set representations

Collins, T. & Meredith, D., 2013, Mathematics and Computation in Music: 4th International Conference, MCM 2013, Montreal, QC, Canada, June 12-14, 2013. Proceedings. Springer Publishing Company, p. 88-99 12 p. (Lecture Notes in Computer Science, Vol. 7937).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
File
Translational Equivalence
Salient
Musical Works
Causes
7 Citations (Scopus)

Mobile Technologies for Preservation of Indigenous Knowledge in Rural Communities

Winschiers-Theophilus, H., Zaman, T., Jensen, K. L., Rodil, K. & Yeo, A., 2013, The 8th biennial International Conference on Information Technology in Asia. IEEE

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

rural community
knowledge
digitalization
community
106 Citations (Scopus)

Morphees: toward high shape resolution in self-actuated flexible mobile devices

Roudaut, A., Karnik, A., Löchtefeld, M. & Subramanian, S., 2013, Proceedings of the SIGCHI Conference on Human Factors in Computing Systems. p. 593-602 10 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Moving away from Erindi-roukambe: Transferability of a rural community-based co-design

Winschiers-Theophilus, H., Winschiers-Goagoses, N., Rodil, K., Blake, E. & Zaman, T., May 2013, WG 9.4: Social Implications of Computers in Developing Countries: 12th International Conference on Social Implications of Computers in Developing Countries. p. 363-374 12 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

rural community
Namibia
community
research approach
maturity
3 Citations (Scopus)
327 Downloads (Pure)

Multichannel Signal Enhancement using Non-Causal, Time-Domain Filters

Jensen, J. R., Christensen, M. G. & Benesty, J., 2013, 2013 IEEE International Conference on Acoustics, Speech, and Signal Processing. IEEE Signal Processing Society, p. 7274-7278 5 p. (I E E E International Conference on Acoustics, Speech and Signal Processing. Proceedings).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
File
Signal distortion
Noise abatement
Speech enhancement
Decomposition
Experiments
12 Citations (Scopus)
287 Downloads (Pure)

Multimodal Person Re-identification Using RGB-D Sensors and a Transient Identification Database

Møgelmose, A., Moeslund, T. B. & Nasrollahi, K., 2013, International Workshop on Biometrics and Forensics. Lisbon: IEEE Press, p. 1-4

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

File
Biometrics
Sensors
Identification (control systems)
Color
4 Citations (Scopus)

Negative Affect in Human Robot Interaction: Impoliteness in Unexpected Encounters with Robots

Rehm, M. & Krogsager, A., 2013, Proceedings of the 22nd IEEE International Symposium on Robot and Human Interactive Communication (RO-MAN): Living Together, Enjoying Together, and Working Together with Robots!. IEEE Computer Society Press, p. 45-50 6 p. (IEEE RO-MAN proceedings).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Human robot interaction
Robots
Robotics