An Autonomous Dance Scoring System Using Marker-based Motion Capture

2005 ◽  
Author(s):  
Huayue Chen ◽  
Gang Qian ◽  
Jodi James
Keyword(s):  
Motion Capture ◽  
Scoring System

scholarly journals Constructing A Scoring Support Approach Model For Classical Ballet: Combining Motion Capture And Statistical Science

2013 ◽  
Vol 11 (6) ◽  
pp. 241
Author(s):  
Kazuma Yanagisawa ◽  
Kakuro Amasaka
Keyword(s):  
Motion Capture ◽  
Scoring System ◽  
Practical Skills ◽  
Direct Link ◽  
Statistical Science ◽  
Classical Ballet

This study employs motion capture and statistics todevelop an objective, rational scoring system for classical ballet and uses theresults to construct a scoring support approach model. Specifically, the studyfocuses on classical ballet, using interviews with judges and other methods toclarify the correlation between practical skills and barre training as well asbetween technical and artistic scores. This process revealed that practicalskills are a combination of movements practiced at a barre and that technicalevaluations ofbarre training have a direct link to overall evaluations of practical skills.Based on these insights, the authors broke barre training down into individualmovement elements and movement factors, then clarified the causal relationshipsamong them using positioning data gathered from motion capture equipment andfrom scoring results by professional judges. The knowledge gained was, in turn,used to actually support the scoring of classical ballet barre training, andthe desired results were obtained.

scholarly journals Is the Landing Error Scoring System Reliable and Valid? A Systematic Review

2020 ◽  
Vol 12 (2) ◽  
pp. 181-188 ◽  
Author(s):  
Ivana Hanzlíková ◽  
Kim Hébert-Losier
Keyword(s):  
Lower Extremity ◽  
Predictive Validity ◽  
Motion Capture ◽  
Study Design ◽  
Scoring System ◽  
Motion Capture System ◽  
Lower Extremity Injuries ◽  
3 Dimensional ◽  
Jump Landing ◽  
Extremity Injuries

Context: The Landing Error Scoring System (LESS) is a clinical tool often used in research and practice to identify athletes presenting high injury-risk biomechanical patterns during a jump-landing task. Objective: To systematically review the literature addressing the psychometric properties of the LESS. Data Sources: Three electronic databases (PubMed, Web of Science, and Scopus) were searched on March 28, 2018, using the term “Landing Error Scoring System.” Study Selection: All studies using the LESS as main outcome measure and addressing its reliability, validity against motion capture system, and predictive validity were included. Original English-language studies published in peer-reviewed journals were reviewed. Studies using modified versions of the LESS were excluded. Study Design: Systematic literature review. Level of Evidence: Level 4. Data Extraction: Study design, population, LESS testing procedures, LESS scores, statistical analysis, and main results were extracted from studies using a standardized template. Results: Ten studies met inclusion criteria and were appraised using Newcastle-Ottawa Quality Assessment Scale adapted for cross-sectional studies. The overall LESS score demonstrated good-to-excellent intrarater (intraclass correlation coefficient [ICC], 0.82-0.99), interrater (ICC, 0.83-0.92), and intersession reliability (ICC, 0.81). The validity of the overall LESS score against 3-dimensional jump-landing biomechanics was good when individuals were divided into 4 quartiles based on LESS scores. The validity of individual LESS items versus 3-dimensional motion capture data was moderate-to-excellent for most of the items addressing key risk factors for anterior cruciate ligament (ACL) injury. The predictive value of the LESS for ACL and other noncontact lower-extremity injuries remains uncertain based on the current scientific evidence. Conclusion: The LESS is a reliable screening tool. However, further work is needed to improve the LESS validity against motion capture system and confirm its predictive validity for ACL and other noncontact lower-extremity injuries.

scholarly journals Automated Quantification of the Landing Error Scoring System With a Markerless Motion-Capture System

2017 ◽  
Vol 52 (11) ◽  
pp. 1002-1009 ◽  
Author(s):  
Timothy C. Mauntel ◽  
Darin A. Padua ◽  
Laura E. Stanley ◽  
Barnett S. Frank ◽  
Lindsay J. DiStefano ◽  
...  
Keyword(s):  
Motion Capture ◽  
Scoring System ◽  
Video Recording ◽  
Automated System ◽  
Depth Camera ◽  
Motion Capture System ◽  
Percentage Agreement ◽  
Jump Landing ◽  
Markerless Motion Capture ◽  
Consensus Expert

Context:  The Landing Error Scoring System (LESS) can be used to identify individuals with an elevated risk of lower extremity injury. The limitation of the LESS is that raters identify movement errors from video replay, which is time-consuming and, therefore, may limit its use by clinicians. A markerless motion-capture system may be capable of automating LESS scoring, thereby removing this obstacle. Objective:  To determine the reliability of an automated markerless motion-capture system for scoring the LESS. Design:  Cross-sectional study. Setting:  United States Military Academy. Patients or Other Participants:  A total of 57 healthy, physically active individuals (47 men, 10 women; age = 18.6 ± 0.6 years, height = 174.5 ± 6.7 cm, mass = 75.9 ± 9.2 kg). Main Outcome Measure(s):  Participants completed 3 jump-landing trials that were recorded by standard video cameras and a depth camera. Their movement quality was evaluated by expert LESS raters (standard video recording) using the LESS rubric and by software that automates LESS scoring (depth-camera data). We recorded an error for a LESS item if it was present on at least 2 of 3 jump-landing trials. We calculated κ statistics, prevalence- and bias-adjusted κ (PABAK) statistics, and percentage agreement for each LESS item. Interrater reliability was evaluated between the 2 expert rater scores and between a consensus expert score and the markerless motion-capture system score. Results:  We observed reliability between the 2 expert LESS raters (average κ = 0.45 ± 0.35, average PABAK = 0.67 ± 0.34; percentage agreement = 0.83 ± 0.17). The markerless motion-capture system had similar reliability with consensus expert scores (average κ = 0.48 ± 0.40, average PABAK = 0.71 ± 0.27; percentage agreement = 0.85 ± 0.14). However, reliability was poor for 5 LESS items in both LESS score comparisons. Conclusions:  A markerless motion-capture system had the same level of reliability as expert LESS raters, suggesting that an automated system can accurately assess movement. Therefore, clinicians can use the markerless motion-capture system to reliably score the LESS without being limited by the time requirements of manual LESS scoring.

scholarly journals Design and implementation of Peking Opera action scoring system based on human skeleton information

2018 ◽  
Vol 232 ◽  
pp. 01026 ◽  
Author(s):  
Hang Zhao ◽  
Youdong Ding ◽  
Bing Yu ◽  
Chenfeng Jiang ◽  
Wanying Zhang
Keyword(s):  
Motion Capture ◽  
Scoring System ◽  
Body Part ◽  
Human Action ◽  
Human Skeleton ◽  
Skeleton Model ◽  
Software Interface ◽  
Peking Opera ◽  
Optical Motion ◽  
Optical Motion Capture

At present, most of the preservation records of Peking Opera remain in the ways of video and text, and the digitalization degree is far lower than the development level of science and technology. The immaterial cultural heritage cannot be fully displayed and Peking Opera’s value is weakened. Therefore, adopting advanced motion capture technology is of great significance to the protection and inheritance of Peking Opera. We use optical motion capture equipment to record the movement information of Peking Opera actors, then keep the human skeleton information in a specific file format. After that, the hierarchical human action skeleton model was analysed, and the final score was obtained by comparing the change sequence of information of reference action and training action skeleton with the improved DTW algorithm. We have realized the graphical interface of the system, and the trainer can easily select the action segments to train or select a specific body part for specific action training. This paper introduces the overall design framework of our Peking Opera action scoring system, including the collection of action information, the implementation of scoring algorithm and the design of software interface.

An Investigation of the Assumptions Underlying the Scoring System of the Arizona Articulation Proficiency Scale: Revised

1979 ◽  
Vol 10 (4) ◽  
pp. 241-245
Author(s):  
Richard J. Schissel ◽  
Linda B. James
Keyword(s):  
Scoring System ◽  
Frequency Of Occurrence

This study examines the assumptions underlying the scoring system of the Arizona Articulation Proficiency Scale: Revised. Twenty-one children between the ages of four years two months and six years 11 months were administered the Arizona Articulation Proficiency Scale: Revised and the Screening Deep Test of Articulation. The subjects' performance on the two tests was compared for the phones: [s], [l], [r], [t∫], [θ], [∫], [k], [f], and [t]. Results suggested that 1) the production of most sounds in only two contexts does not necessarily reflect the accuracy of production of those sounds in other contexts, and 2) for the sounds tested, the weightings assigned on the basis of their frequency of occurrence rather than the frequency with which they were misarticulated overestimated the extent of many articulation errors.

Qualitative and quantitative assessment of nailfold capillaries by capillaroscopy in healthy volunteers

VASA ◽  
2012 ◽  
Vol 41 (1) ◽  
pp. 19-26 ◽  
Author(s):  
Hoerth ◽  
Kundi ◽  
Katzenschlager ◽  
Hirschl
Keyword(s):  
Scoring System ◽  
Morphological Changes ◽  
Connective Tissue Diseases ◽  
Capillary Density ◽  
Diagnostic Value ◽  
Healthy Individuals ◽  
Extreme Position ◽  
Qualitative And Quantitative ◽  
Diffuse Loss ◽  
Density Results

Background: Nailfold capillaroscopy (NVC) is a diagnostic tool particularly useful in the differential diagnosis of rheumatic and connective tissue diseases. Although successfully applied since many years, little is known about prevalence and distribution of NVC changes in healthy individuals. Probands and methods: NVC was performed in 120 individuals (57 men and 63 women; age 18 to 70 years) randomly selected according to predefined age and sex strata. Diseases associated with NVC changes were excluded. The nailfolds of eight fingers were assessed according to standardized procedures. A scoring system was developed based on the distribution of the number of morphologically deviating capillaries, microhaemorrhages, and capillary density. Results: Only 18 individuals (15 %) had no deviation in morphology, haemorrhages, or capillary density on any finger. Overall 67 % had morphological changes, 48 % had microhaemorrhages, and 40 % of volunteers below 40 years of age and 18 % above age 40 had less than 8 capillaries/mm. Among morphological changes tortous (43 %), ramified (47 %), and bushy capillaries (27 %) were the most frequently altered capillary types. A semiquantitative scoring system was developed in such a way that a score above 1 indicates an extreme position (above the 90th percentile) in the distribution of scores among healthy individuals. Conclusions: Altered capillaries occur frequently among healthy individuals and should be interpreted as normal unless a suspicious increase in their frequency is determined by reference to the scoring system. Megacapillaries and diffuse loss of capillaries were not found and seem to be of specific diagnostic value.

Professionelle Wahrnehmung und Fachkraft-Kind-Interaktion von KiTa-Fachkräften

2020 ◽  
pp. 1-15
Author(s):  
Christoph Mischo ◽  
Katrin Wolstein ◽  
Svenja Peters
Keyword(s):  
Scoring System ◽  
Classroom Assessment ◽  
Classroom Assessment Scoring System ◽  
Professionelle Wahrnehmung

Zusammenfassung. Die Professionelle Wahrnehmung von Pädagoginnen und Pädagogen als Fähigkeit zur Identifikation, Interpretation und Bewertung relevanter Merkmale pädagogischer Interaktion stellt eine wichtige pädagogische Teilkompetenz dar. Empirisch untersucht ist die Professionelle Wahrnehmung insbesondere bei Lehrkräften, kaum dagegen bei Fachkräften in KiTas. Ziel dieser Studie ist daher die Untersuchung von Zusammenhängen zwischen der Professionellen Wahrnehmung und dem beobachteten Handeln von KiTa-Fachkräften. Zur Evokation der Professionellen Wahrnehmung wurden 120 Teilnehmerinnen und Teilnehmern typische Fachkraft-Kind-Interaktionen als Video-Stimuli dargeboten. Die Erfassung der Professionellen Wahrnehmung erfolgte mit zwei offenen (Lautes Denken und retrospektives Interview) sowie mit einem geschlossenen Antwortformat (Rating-Skalen). Zur Einschätzung der Qualität des Interaktionsverhaltens der Fachkräfte wurde das international gut etablierte Classroom Assessment Scoring System (CLASS Pre-K) eingesetzt. Bei der Zusammenhangsprüfung im Rahmen eines Strukturgleichungsmodells mit latenten Variablen zeigte nur die mit der Methode des Lauten Denkens erfasste Professionelle Wahrnehmung Zusammenhänge mit den CLASS-Domänen Organisation des KiTA-Alltags und Lernunterstützung. Die Ergebnisse werden im Hinblick auf die Implikationen der Erhebungsmethodik für die Professionelle Wahrnehmung diskutiert.

Situative Unterschiede der Interaktionsqualität im Verlauf des Kindergartenalltags

2016 ◽  
Vol 5 (4) ◽  
pp. 206-213 ◽  
Author(s):  
Andreas Wildgruber ◽  
Monika Wertfein ◽  
Claudia Wirts ◽  
Marina Kammermeier ◽  
Erik Danay
Keyword(s):  
Scoring System ◽  
Classroom Assessment ◽  
Fand Sich ◽  
Classroom Assessment Scoring System

Zusammenfassung. Die Interaktionen zwischen pädagogischen Fachkräften und Kindern sind von zentraler Bedeutung für die Moderation des kindlichen Lernens und der kindlichen Entwicklung. Angesichts der Variabilität der Interaktionen im Tagesverlauf wurde in dieser explorativen Studie untersucht, inwieweit sich Unterschiede der Interaktionsqualität zwischen verschiedenen typischen Situationen (Freispiel, moderierte Aktivitäten, Lesesituationen, Garten, Essen) in Kindertageseinrichtungen zeigen. Bei 85 Fachkräften in bayerischen Kindergärten wurden die Interaktionen zwischen Fachkräften und Kindern jeweils einen Vormittag teilnehmend beobachtet und mit dem Verfahren „Classroom Assessment Scoring System Pre-K“ ( Pianta, La Paro & Hamre, 2008 ) geratet. Es zeigte sich zum einen in Essenssituationen eine niedrigere Interaktionsqualität als in den anderen Situationen. Zum anderen fand sich vor allem im Bereich der Lernunterstützung in Lesesituationen und moderierten Aktivitäten eine höhere Interaktionsqualität als im Freispiel. Die simultane Berücksichtigung der beiden Faktoren Tageszeit und Situation ergab, dass die gefundenen Effekte auf den Faktor Situation zurückzuführen waren.

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