from PIL import Image import numpy as np from ocrd_models import OcrdExif from cv2 import COLOR_GRAY2BGR, COLOR_RGB2BGR, cvtColor, imread # from sbb_binarization def cv2pil(img): return Image.fromarray(img.astype('uint8')) def pil2cv(img): # from ocrd/workspace.py color_conversion = COLOR_GRAY2BGR if img.mode in ('1', 'L') else COLOR_RGB2BGR pil_as_np_array = np.array(img).astype('uint8') if img.mode == '1' else np.array(img) return cvtColor(pil_as_np_array, color_conversion) def check_dpi(image_filename): exif = OcrdExif(Image.open(image_filename)) print(exif.to_xml()) resolution = exif.resolution if exif.resolutionUnit == 'cm': resolution /= 2.54 return int(resolution)