Change detection in remote sensing image using a modified logarithmic mean-based thresholding
Why this work is in the frame
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Bibliographic record
Abstract
In this paper, we propose a novel approach to change detection in remote sensing imagery by modifying the logarithmic mean-based thresholding technique (MLMBTICD). This method introduces a preprocessing step using a mean filter to enhance the accuracy of detecting changes between multi-temporal satellite images. The mean filter reduces noise and smoothens the images before calculating the logarithmic difference, which improves the quality of the change detection process. The proposed approach was tested on two benchmark datasets: the Onera dataset, which contains satellite images of urban regions, and the Ottawa dataset, consisting of RADARSAT-2 images. The effectiveness of the MLMBTICD method was evaluated using Overall Accuracy (OA) and Kappa metrics. The results demonstrate that our method achieves better performance compared to the original logarithmic thresholding method, yielding improved change detection accuracy. The preprocessing step significantly enhances the quality of the detected changes, making the proposed method a robust and efficient solution for various remote sensing applications, including land use monitoring, urban development, and environmental change analysis.
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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 | 0.001 | 0.001 |
| 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