Automatic Recognition of Rock Images Based on Convolutional Neural Network and Discrete Cosine Transform
Why this work is in the frame
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Bibliographic record
Abstract
This paper aims to overcome two major defects with the traditional rock image classification framework based on convolutional neural network (CNN), namely, slow training and poor classification accuracy. First, the causes of the two defects were analyzed in details. Through the analysis, the slow training is attributable to the information redundancy in the original image, and the classification error to the lack of differentiation of rock features extracted from the spatial domain. Therefore, the original image was divided into multiple blocks of equal size, and the discrete cosine transform (DCT) was introduced to process each block. After the transform, ten or fifteen frequency coefficients in the upper left corner of the 2D frequency coefficient matrix were retained, and added to the traditional CNN framework for image classification. Experimental results show that the proposed DCT-CNN framework outperformed the CNN framework in training time and classification accuracy.
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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 | 0.000 | 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) | 0.001 | 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