| clear_all_variation_models | Free the memory of all variation models. |
| clear_variation_model | Free the memory of a variation model. |
| compare_variation_model | Compare an image to a variation model. |
| create_variation_model | Create a variation model for image comparison. |
| get_variation_model | Return the images used for image comparison by a variation model. |
| prepare_variation_model | Prepare a variation model for comparison with an image. |
| read_variation_model | Read a variation model from a file. |
| train_variation_model | Train a variation model. |
| write_variation_model | Write a variation model to a file. |