openslide-bin

import os import openslide from PIL import Image # NOTE: For Windows, if you encounter 'DLL load failed' or 'cannot find OpenSlide library', # you might need to manually specify the path to the openslide-bin 'bin' directory. # Example: openslide_bin_path = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'openslide-win64-20231011', 'bin') # if os.name == 'nt': # os.add_dll_directory(openslide_bin_path) # Placeholder for a whole-slide image file. Replace with your .svs, .ndpi, etc. # You can download sample slides from openslide.org/demo slide_path = os.environ.get('OPENSLIDE_SAMPLE_SLIDE_PATH', 'path/to/your/slide.svs') try: with openslide.OpenSlide(slide_path) as slide: print(f"Opened slide: {slide_path}") print(f"Dimensions (level 0): {slide.dimensions}") print(f"Level count: {slide.level_count}") print(f"Properties: {slide.properties.keys()}") # Get a thumbnail of the slide thumbnail = slide.get_thumbnail((500, 500)) thumbnail.save('slide_thumbnail.png') print("Saved thumbnail to slide_thumbnail.png") # Read a region from a specific level # For example, read a 256x256 region from the highest resolution (level 0) # starting at (0, 0) pixel coordinates. region_image = slide.read_region((0, 0), 0, (256, 256)) region_image.save('slide_region_level0.png') print("Saved a 256x256 region from level 0 to slide_region_level0.png") except openslide.OpenSlideError as e: print(f"Error opening slide: {e}") print("Please ensure the slide path is correct and the file is a supported OpenSlide format.") except FileNotFoundError: print(f"Error: Slide file not found at {slide_path}") except Exception as e: print(f"An unexpected error occurred: {e}")