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Record W2293582111 · doi:10.1109/icip.2015.7351412

Traffic analysis without motion features

2015· article· en· W2293582111 on OpenAlex

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
TopicVideo Surveillance and Tracking Methods
Canadian institutionsUniversité de Sherbrooke
Fundersnot available
KeywordsComputer scienceTraffic analysisArtificial intelligencePerspective (graphical)Motion (physics)Process (computing)Frame (networking)Computer visionMotion analysisMachine learningData mining

Abstract

fetched live from OpenAlex

In this paper, we investigate the possibility of monitoring traffic without using any motion features. The goal of our system is to process videos with ultra-low frame rate, i.e. videos for which reliable motion features cannot be computed. In this work, we investigate how 2D spatial features combined with a machine learning method can assess traffic conditions such as fluid traffic, dense traffic, and traffic jam. The underlying hypothesis that we ought to validate is that traffic images are heavily characterized by their 2D spatial textures. In that perspective, we tested different 2D texture features and machine learning methods to see how accurate such an approach can be. We also performed a regression on the image descriptor in order to estimate traffic density. Experimental results obtained on the UCSD traffic dataset reveal that our approach generalizes well to various weather and lighting conditions. It even outperforms state-of-the-art traffic analysis methods relying on spatio-temporal features.

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)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Other design · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: none
Teacher disagreement score0.776
Threshold uncertainty score0.228

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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 head0.044
GPT teacher head0.317
Teacher spread0.274 · 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

Citations32
Published2015
Admission routes1
Has abstractyes

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