Bourn3z

Results 3 issues of Bourn3z

Rectify code of the LayoutLM series models and adjust it to amp_level mode

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Remove unnecessary preprocessing steps of VI-LayoutXLM to improve performance.

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1.Refactor the code of 'predict_from_yaml.py' 2.Added concat_crops function

…nction. Thank you for your contribution to the MindOCR repo. Before submitting this PR, please make sure: - [ ] You have read the [Contributing Guidelines on pull requests](https://github.com/mindspore-lab/mindcv/blob/main/CONTRIBUTING.md) -...