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Lind, Mats
Publications (10 of 48) Show all publications
Hast, A., Lind, M. & Vats, E. (2019). Embedded Prototype Subspace Classification: A subspace learning framework. In: Computer Analysis of Images and Patterns: . Paper presented at CAIP 2019, September 2–6, Salerno, Italy (pp. 581-592). Springer
Open this publication in new window or tab >>Embedded Prototype Subspace Classification: A subspace learning framework
2019 (English)In: Computer Analysis of Images and Patterns, Springer, 2019, p. 581-592Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
Springer, 2019
Series
Lecture Notes in Computer Science
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:uu:diva-393257 (URN)
Conference
CAIP 2019, September 2–6, Salerno, Italy
Available from: 2019-09-18 Created: 2019-09-18 Last updated: 2019-09-18
Hast, A., Lind, M. & Vats, E. (2019). Subspace Learning and Classification. In: Proc. 3rd Swedish Symposium on Deep Learning: . Paper presented at SSDL 2019, June 10–11, Norrköping, Sweden.
Open this publication in new window or tab >>Subspace Learning and Classification
2019 (English)In: Proc. 3rd Swedish Symposium on Deep Learning, 2019Conference paper, Poster (with or without abstract) (Other academic)
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:uu:diva-389451 (URN)
Conference
SSDL 2019, June 10–11, Norrköping, Sweden
Available from: 2019-07-14 Created: 2019-07-14 Last updated: 2019-07-22
Wang, X. M., Lind, M. & Bingham, G. P. (2018). Large continuous perspective change with noncoplanar points enables accurate slant perception. Journal of Experimental Psychology: Human Perception and Performance, 44(10), 1508-1522
Open this publication in new window or tab >>Large continuous perspective change with noncoplanar points enables accurate slant perception
2018 (English)In: Journal of Experimental Psychology: Human Perception and Performance, ISSN 0096-1523, E-ISSN 1939-1277, Vol. 44, no 10, p. 1508-1522Article in journal (Refereed) Published
National Category
Human Computer Interaction
Identifiers
urn:nbn:se:uu:diva-363204 (URN)10.1037/xhp0000553 (DOI)000445961700003 ()29927269 (PubMedID)
Available from: 2018-10-18 Created: 2018-10-18 Last updated: 2018-10-18Bibliographically approved
Fath, A. J., Lind, M. & Bingham, G. P. (2018). Perception of time to contact of slow- and fast-moving objects using monocular and binocular motion information. Attention, Perception & Psychophysics, 80(6), 1584-1590
Open this publication in new window or tab >>Perception of time to contact of slow- and fast-moving objects using monocular and binocular motion information
2018 (English)In: Attention, Perception & Psychophysics, ISSN 1943-3921, E-ISSN 1943-393X, Vol. 80, no 6, p. 1584-1590Article in journal (Refereed) Published
National Category
Psychology (excluding Applied Psychology)
Identifiers
urn:nbn:se:uu:diva-387266 (URN)10.3758/s13414-018-1517-8 (DOI)000439488800021 ()29667039 (PubMedID)
Available from: 2018-04-17 Created: 2019-06-27 Last updated: 2019-06-27Bibliographically approved
Sjödén, B., Lind, M. & Silvervarg, A. (2017). Can a teachable agent influence how students respond to competition in an educational game?. In: André, Elisabeth; Baker, Ryan; Hu, Xiangen; Rodrigo, Ma. Mercedes T.; du Boulay, Benedict (Ed.), André, Elisabeth; Baker, Ryan; Hu, Xiangen; Rodrigo, Mercedes T.; du Boulay, Benedict (Ed.), Artificial Intelligence in Education: . Paper presented at 18th International Conference on Artificial Intelligence in Education (AIED), 2017, June 28 – July 1, Wuhan, China (pp. 347-358). Springer
Open this publication in new window or tab >>Can a teachable agent influence how students respond to competition in an educational game?
2017 (English)In: Artificial Intelligence in Education / [ed] André, Elisabeth; Baker, Ryan; Hu, Xiangen; Rodrigo, Mercedes T.; du Boulay, Benedict, Springer, 2017, p. 347-358Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
Springer, 2017
Series
Lecture Notes in Computer Science, ISSN 0302-9743 ; 10331
National Category
Human Computer Interaction
Identifiers
urn:nbn:se:uu:diva-335356 (URN)10.1007/978-3-319-61425-0_29 (DOI)000434475300029 ()978-3-319-61424-3 (ISBN)978-3-319-61425-0 (ISBN)
Conference
18th International Conference on Artificial Intelligence in Education (AIED), 2017, June 28 – July 1, Wuhan, China
Available from: 2017-06-23 Created: 2017-12-04 Last updated: 2018-10-22Bibliographically approved
Daniels, M., Cajander, Å., Eckerdal, A., Lind, M., Nylén, A., Clear, T. & McDermott, R. (2015). Competencies for paradigm shift "survival". In: Proc. 45th ASEE/IEEE Frontiers in Education Conference: . Paper presented at FIE 2015, October 21–24, El Paso, TX (pp. 1424-1429). Piscataway, NJ: IEEE Press
Open this publication in new window or tab >>Competencies for paradigm shift "survival"
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2015 (English)In: Proc. 45th ASEE/IEEE Frontiers in Education Conference, Piscataway, NJ: IEEE Press, 2015, p. 1424-1429Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Press, 2015
National Category
Computer and Information Sciences Educational Sciences
Identifiers
urn:nbn:se:uu:diva-269118 (URN)10.1109/FIE.2015.7344255 (DOI)000371705200240 ()978-1-4799-8453-4 (ISBN)
Conference
FIE 2015, October 21–24, El Paso, TX
Available from: 2015-10-24 Created: 2015-12-14 Last updated: 2018-01-10Bibliographically approved
Lind, M., Lee, Y. L., Mazanowski, J., Kountouriotis, G. K. & Bingham, G. P. (2014). Affine operations plus symmetry yield perception of metric shape with large perspective changes (≥ 45 degrees): Data and model. Journal of Experimental Psychology: Human Perception and Performance, 40(1), 83-93
Open this publication in new window or tab >>Affine operations plus symmetry yield perception of metric shape with large perspective changes (≥ 45 degrees): Data and model
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2014 (English)In: Journal of Experimental Psychology: Human Perception and Performance, ISSN 0096-1523, E-ISSN 1939-1277, Vol. 40, no 1, p. 83-93Article in journal (Refereed) Published
Abstract [en]

G. P. Bingham and M. Lind (2008, Large continuous perspective transformations are necessary and sufficient for accurate perception of metric shape, Perception & Psychophysics, Vol. 70, pp. 524-540) showed that observers could perceive metric shape, given perspective changes >= 45 degrees relative to a principal axis of elliptical cylinders. In this article, we tested (a) arbitrary perspective changes of 45 degrees, (b) whether perception gradually improves with more perspective change, (c) speed of rotation, (d) whether this works with other shapes (asymmetric polyhedrons), (e) different slants, and (f) perspective changes >45 degrees. Experiment 1 compared 45 degrees perspective change away from, versus centered on, a principal axis. Observers adjusted an ellipse to match the cross-section of an elliptical cylinder viewed in a stereo-motion display. Experiment 2 tested whether performance would improve gradually with increases in perspective change, or suddenly with a 45 degrees change. We also tested speed of rotation. Experiment 3 tested (a) asymmetric polyhedrons, (b) perspective change beyond 45 degrees, and (c) the effect of slant. The results showed (a) a particular perspective was not required, (b) judgments only improved with >= 45 degrees change, (c) speed was not relevant, (d) it worked with asymmetric polyhedrons, (e) slant was not relevant, and (f) judgments remained accurate beyond 45 degrees of change. A model shows how affine operations, together with a symmetry yielded by 45 degrees perspective change, bootstrap perception of metric shape.

Keywords
3D shape perception, affine geometry, space perception, metric, structure-from-motion, stereo motion
National Category
Computer Vision and Robotics (Autonomous Systems)
Identifiers
urn:nbn:se:uu:diva-220290 (URN)10.1037/a0033245 (DOI)000330848300010 ()
Available from: 2013-06-10 Created: 2014-03-12 Last updated: 2018-01-11Bibliographically approved
Lee, Y. L., Lind, M. & Bingham, G. P. (2013). Perceived 3D metric (or Euclidean) shape is merely ambiguous, not systematically distorted. Experimental Brain Research, 224(4), 551-555
Open this publication in new window or tab >>Perceived 3D metric (or Euclidean) shape is merely ambiguous, not systematically distorted
2013 (English)In: Experimental Brain Research, ISSN 0014-4819, E-ISSN 1432-1106, Vol. 224, no 4, p. 551-555Article in journal (Refereed) Published
Abstract [en]

Many studies have reported that perceived shape is systematically distorted, but Lind et al. (Inf Vis 2:51-57, 2003) and Todd and Norman (Percept Psychophys 65:31-47, 2003) both found that distortions varied with tasks and observers. We now investigated the hypothesis that perception of 3D metric (or Euclidean) shape is ambiguous rather than systematically distorted by testing whether variations in context would systematically alter apparent distortions. The task was to adjust the aspect ratio of an ellipse on a computer screen to match the cross-section of a target elliptical cylinder object viewed in either frontoparallel elliptical cross-section (2D) or elliptical cross-section in depth (3D). Three different groups were tested using two tasks and two different ranges of aspect ratio: Group 1) 2D(Small) -> 3D(Large), Group 2) 2D(Large) -> 3D(Small), Group 3a) 2D(Small) -> 3D(Small), and Group 3b) 2D(Large) -> 3D(Large). Observers performed the 2D task accurately. This provided the context. The results showed the expected order of slopes when judged aspect ratios were regressed on actual aspect ratios: Group 1 (SL) < Group 3 (SS and LL) < Group 2 (LS). The ambiguity of perceived 3D aspect ratios allowed the range of aspect ratios experienced in the 2D task to affect the 3D judgments systematically. Nevertheless, when the 2D and 3D ranges of aspect ratios were the same (LL and SS) and the 2D were judged accurately, this did not yield accurate 3D judgments. The results supported the hypothesis that perceived 3D metric shape is merely ambiguous rather than systematically distorted.

Keywords
3D shape perception, Structure-from-motion, Stereo, Affine shape
National Category
Human Computer Interaction
Identifiers
urn:nbn:se:uu:diva-197084 (URN)10.1007/s00221-012-3334-y (DOI)000314766800004 ()
Available from: 2013-03-18 Created: 2013-03-18 Last updated: 2018-01-11Bibliographically approved
Lee, Y.-L., Lind, M., Bingham, N. & Bingham, G. P. (2012). Object recognition using metric shape. Vision Research, 69, 23-31
Open this publication in new window or tab >>Object recognition using metric shape
2012 (English)In: Vision Research, ISSN 0042-6989, E-ISSN 1878-5646, Vol. 69, p. 23-31Article in journal (Refereed) Published
Abstract [en]

Most previous studies of 3D shape perception have shown a general inability to visually perceive metric shape. In line with this, studies of object recognition have shown that only qualitative differences, not quantitative or metric ones can be used effectively for object recognition. Recently. Bingham and Lind (2008) found that large perspective changes (>= 45 degrees) allow perception of metric shape and Lee and Bingham (2010) found that this, in turn, allowed accurate feedforward reaches-to-grasp objects varying in metric shape. We now investigated whether this information would allow accurate and effective recognition of objects that vary in respect to metric shape. Both judgment accuracies (d') and reaction times confirmed that, with the availability of visual information in large perspective changes, recognition of objects using quantitative as compared to qualitative properties was equivalent in accuracy and speed of judgments. The ability to recognize objects based on their metric shape is, therefore, a function of the availability or unavailability of requisite visual information. These issues and results are discussed in the context of the Two Visual System hypothesis of Milner and Goodale (1995, 2006).

Keywords
Object recognition, Shape perception, Structure-from-motion, Stereo vision, Two Visual System theory
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-188568 (URN)10.1016/j.visres.2012.07.013 (DOI)000310928500003 ()
Available from: 2012-12-18 Created: 2012-12-17 Last updated: 2017-12-06Bibliographically approved
Kjellin, A., Winkler Pettersson, L., Seipel, S. & Lind, M. (2010). Different levels of 3D: An evaluation of visualized discrete spatiotemporal data in space-time cubes. Information Visualization, 9(2), 152-164
Open this publication in new window or tab >>Different levels of 3D: An evaluation of visualized discrete spatiotemporal data in space-time cubes
2010 (English)In: Information Visualization, ISSN 1473-8716, E-ISSN 1473-8724, Vol. 9, no 2, p. 152-164Article in journal (Refereed) Published
National Category
Computer Vision and Robotics (Autonomous Systems) Computer and Information Sciences
Identifiers
urn:nbn:se:uu:diva-97388 (URN)10.1057/ivs.2009.8 (DOI)000277756200005 ()
Available from: 2008-08-21 Created: 2008-08-21 Last updated: 2018-01-13Bibliographically approved
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