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Record W4381163497 · doi:10.32920/23541831.v1

Towards Window State Detection Using Image Processing

2023· preprint· en· W4381163497 on OpenAlexaff
David Luong

Bibliographic record

Venuenot available
Typepreprint
Languageen
FieldEngineering
TopicBuilding Energy and Comfort Optimization
Canadian institutionsToronto Metropolitan University
Fundersnot available
KeywordsWindow (computing)ThresholdingEnergy (signal processing)Computer scienceOccupancyImage (mathematics)Image processingArtificial intelligenceReal-time computingComputer visionData miningEngineeringStatisticsMathematicsArchitectural engineeringOperating system

Abstract

fetched live from OpenAlex

As industry pushes towards more sustainable design, an essential tool that helps designers quantify energy usage of a building is building energy simulation. However, researchers have noticed that there is a gap between the estimated and measured energy use. One aspect contributing to this discrepancy is inaccurate data-driven occupancy behaviour models. To create better models, researchers need to obtain data in a new method that does not produce inauthentic data. Ex-situ camera-based occupant behaviour monitoring has been proposed as a solution. This study uses image processing technologies to identify the windows on a façade and determine their individual state (i.e. open, partially open, or closed). The algorithm developed in this study yields a 90% accuracy rate over all the windows tested. This algorithm is specifically targeted at punched façades with awning windows. Factors that affected the accuracy of ex-situ camera-based occupant behaviour monitoring include environmental conditions such as lighting, obstructions, and reflections. Furthermore, there are challenges in thresholding and identifying the significant peaks for window angle image data. The next steps of this research should determine appropriate threshold values through additional testing and explore new image-processing techniques for other window types.

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.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.002
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.003
Threshold uncertainty score0.007

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.002
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0020.001
Science and technology studies0.0000.000
Scholarly communication0.0020.002
Open science0.0010.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0020.001

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 head0.025
GPT teacher head0.247
Teacher spread0.222 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designSimulation or modeling
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2023
Admission routes1
Has abstractyes

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