transformers

5615a393 - Fall back to slow image processor in ImageProcessingAuto when no fast processor available (#34785)

Fall back to slow image processor in ImageProcessingAuto when no fast processor available (#34785) * refactor image_processing_auto logic * fix fast image processor tests * Fix tests fast vit image processor * Add safeguard when use_fast True and torchvision not available * change default use_fast back to None, add warnings * remove debugging print * call get_image_processor_class_from_name once