如何从 tiff 文件中获取 jpeg 图像？

Question

I have a large tiff file contains multiple JPEG image.When I want to get the image from tiff,it will take a lots of time because of decompression from jpeg to rgb. If i want to get the jpeg image without decompression, how should I do with the tiff. Can I parse the TIFF file to get some image data and directly generate a JPEG image?

Answer 1

This is the final implementation method with opentile:

 from opentile import OpenTile import os import traceback os.environ.setdefault('TURBOJPEG', 'C:/lib/') try: tiler = OpenTile.open('name.svs') except: traceback.print_exc() tile_leve=tiler.levels print("{}".format(len(tile_leve))) s=tiler.get_level(0) print(s.compression.split('.')[1]) print(s.photometric_interpretation) print(s.samples_per_pixel) print(s.pixel_spacing) tile_size=str(s.tiled_size).split("x") print(s.tile_size) print(tile_size) y={} for i in range(int(tile_size[0])): for j in range(int(tile_size[1])): tile = tiler.get_tile(0,0,0, (i, j)) y[(i,j)]=tile with open("im/im_{}_{}.jpg".format(i,j),"wb") as f: f.write(tile)

Tifffile is also feasible.