Research Article
Augmented Data Selector to Initiate Text-Based CAPTCHA Attack
Table 1
Architecture of the training model.
| Type/stride | Filter shape | Input size | Output size |
| Conv2D_1/S1 | 3 × 3 × 32 | 200 × 60 × 160 × 1 | 200 × 58 × 158 × 32 | MaxPool2D_1/S2 | 2 × 2 | 200 × 58 × 158 × 32 | 200 × 29 × 79 × 32 | Conv2D_2/S1 | 5 × 5 × 64 | 200 × 29 × 79 × 32 | 200 × 25 × 75 × 64 | MaxPool2D_2/S2 | 2 × 2 | 200 × 25 × 75 × 64 | 200 × 12 × 37 × 64 | Conv2D_3/S1 | 5 × 5 × 128 | 200 × 12 × 37 × 64 | 200 × 8 × 33 × 128 | MaxPool2D_3/S2 | 2 × 2 | 200 × 8 × 33 × 128 | 200 × 4 × 16 × 128 | Flatte | — | 200 × 4 × 16 × 128 | 200 × 8192 | Dense | — | 200 × 8192 | 200 × 128 | Reshape | — | 200 × 128 | 200 × 4 × 32 |
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