| Algorithm 1 Duplication image for input channels | |
| Input: one-channel image | |
| Output: Three-channel image | |
| 1 | I = read the image |
| 2 | C = number of channels for (I) |
| 3 | If input image (C,1) |
| 4 | Concatenate arrays along specified dimensions (I, I, I) |
| 5 | Repeat step 1 to 4 for all images in the dataset |
| 6 | END |
| 7 | END |
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