transformers

1dc96a76 - Add SegFormer (#14019)

Add SegFormer (#14019) * First draft * Make style & quality * Improve conversion script * Add print statement to see actual slice * Make absolute tolerance smaller * Fix image classification models * Add post_process_semantic method * Disable padding * Improve conversion script * Rename to ForSemanticSegmentation, add integration test, remove post_process methods * Improve docs * Fix code quality * Fix feature extractor tests * Fix tests for image classification model * Delete file * Add is_torch_available to feature extractor * Improve documentation of feature extractor methods * Apply suggestions from @sgugger's code review Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com> * Apply some more suggestions of code review * Rebase with master * Fix rebase issues * Make sure model only outputs hidden states when the user wants to * Apply suggestions from code review * Add pad method * Support padding of 2d images * Add print statement * Add print statement * Move padding method to SegformerFeatureExtractor * Fix issue * Add casting of segmentation maps * Add test for padding * Add small note about padding Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>