Streaming spatio-temporal video segmentation using Gaussian Mixture Model
Bibliographic record
Abstract
Development of an automatic streaming video segmentation method is crucial for many video analysis applications. However, consistency of temporal segmentation and scalability for real-time applications are difficult to achieve. This work proposes a linear-time video segmentation method which is scalable and temporally consistent for streaming videos. A Gaussian Mixture Model (GMM) is used to segment each frame while a recursive filtering updates the parameters of the GMM. This hybrid methodology can uniquely propagate Gaussian clusters through each new frame, update the variance recursively, and create or remove clusters as necessary. In this way, the model automatically manipulates the number of clusters in run-time and adapts to any video sequence over streaming frames maintaining temporal coherence. The method needs a distance threshold value as the main parameter. The creation and removal of new clusters are governed by a cluster similarity criterion that can be based on user-defined distance measure. The experimental results are presented with two possible distance measures. The performance of the proposed method on several datasets is found to be comparable to state-of-the-art video segmentation algorithms.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
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".