在python中将tiff转换为jpeg

Question

任何人都可以帮助我阅读.tiff图像并转换为jpeg格式？

from PIL import Image
im = Image.open('test.tiff')
im.save('test.jpeg')

上面的代码无效.

Answer 1

我已成功解决了这个问题.我发布了代码来读取文件夹中的tiff文件并自动转换为jpeg.

import os
from PIL import Image

yourpath = os.getcwd()
for root, dirs, files in os.walk(yourpath, topdown=False):
    for name in files:
        print(os.path.join(root, name))
        if os.path.splitext(os.path.join(root, name))[1].lower() == ".tiff":
            if os.path.isfile(os.path.splitext(os.path.join(root, name))[0] + ".jpg"):
                print "A jpeg file already exists for %s" % name
            # If a jpeg is *NOT* present, create one from the tiff.
            else:
                outfile = os.path.splitext(os.path.join(root, name))[0] + ".jpg"
                try:
                    im = Image.open(os.path.join(root, name))
                    print "Generating jpeg for %s" % name
                    im.thumbnail(im.size)
                    im.save(outfile, "JPEG", quality=100)
                except Exception, e:
                    print e

Answer 2

这个问题可以借助OpenCV来解决。这对我有用。
OpenCV 版本==4.3.0

import cv2, os
base_path = "data/images/"
new_path = "data/ims/"
for infile in os.listdir(base_path):
    print ("file : " + infile)
    read = cv2.imread(base_path + infile)
    outfile = infile.split('.')[0] + '.jpg'
    cv2.imwrite(new_path+outfile,read,[int(cv2.IMWRITE_JPEG_QUALITY), 200])

Answer 3

import os, sys
from PIL import Image

我试图直接保存为jpeg，但错误表明该模式为P模式且与JPEG格式不兼容，因此您必须按以下方式将其转换为RGB模式。

for infile in os.listdir("./"):
    print "file : " + infile
    if infile[-3:] == "tif" or infile[-3:] == "bmp" :
       # print "is tif or bmp"
       outfile = infile[:-3] + "jpeg"
       im = Image.open(infile)
       print "new filename : " + outfile
       out = im.convert("RGB")
       out.save(outfile, "JPEG", quality=90)