Interpreting Camera Operations in the Context of Content-based Video Indexing and Retrieval
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.
Bibliographic record
Abstract
In this work, we intend to go one step further to overcome the difficulty that lies in the gap between low-level media features (e.g. colors, texture, motion, etc.) and high-level concepts to perform a reliable content-based indexing and retrieval. More especially, our work proposes a new way to establish a connection between both geometric and radiometric deformations and the characterization of them in terms of camera operations. Based on both the apparent motion and the defocus blur (low-level features), we estimate extrinsic and intrinsic camera parameter changes, and then deduce 3D camera operations (i.e. mid-level features), such as panning/tracking, tilting/booming, zooming/ dollying and rolling, as well as focus changes. Finally, camera operations are recorded into an index which is then used for video retrieval. Experiments confirm that the proposed mid-level features can be accurately deduced from low-level features and that they can be used for indexing and retrieval purpose.
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 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 | 0.000 | 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 | 0.000 |
| 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 it