MétaCan
Menu
Back to cohort
Record W2155996262 · doi:10.1109/icarcv.2004.1468914

Continuous human activity recognition

2005· article· en· W2155996262 on OpenAlex
R. D. Green, Ling Guan

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldComputer Science
TopicHand Gesture Recognition Systems
Canadian institutionsToronto Metropolitan University
Fundersnot available
KeywordsClutterComputer scienceParticle filterComputer visionArtificial intelligenceRobustness (evolution)Hidden Markov modelSmoothingHeuristicsMotion captureKalman filterPattern recognition (psychology)Motion (physics)Radar

Abstract

fetched live from OpenAlex

Effectively recognizing human activities requires at least 32 joint related degrees of freedom to be estimated so as to reliably track the human body in 3D. The particle filter is robust to distracting clutter by maintaining multiple hypotheses for each of these joint angles. Real-time tracking is difficult however with the computational overhead of such a large search space. This paper optimizes this search space utilizing feedback from a continuous human activity recognition (CHAR) system and improves the robustness and efficiency of each particle calculation using a novel body model. The joint angles are estimated for the next frame using a particle filter with forward smoothing. A new paradigm enables the temporal segmentation of continuous motion into dynemes. Using HMM, the CHAR system attempts to infer the human movement skill that could have produced the observed sequence of dynemes. Hundreds of movement skills, from gait to saltos, are successfully tracked and recognized.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Other design · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.985
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.002

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.033
GPT teacher head0.269
Teacher spread0.237 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Quick stats

Citations4
Published2005
Admission routes1
Has abstractyes

Explore more

Same topicHand Gesture Recognition SystemsFrench-language works237,207