我正在尝试将一些tiff文件从2000 * 2000重新采样到500 * 500。 我已经创建了一个函数,我尝试了一个文件,它工作得很好。现在我想将它应用于我拥有的所有可用文件。
我想编写函数的输出,我已经根据我的知识编写了代码,并且在写out_file时收到错误。我已复制了功能和主要代码供您考虑。主代码只是根据命名读取tif文件并应用该函数。如果某人可以指导我错误的地方,我会感激不尽。
#*********function********************
def ResampleImage(infile):
fp = open(infile, "rb")
p = ImageFile.Parser()
while 1:
s = fp.read()
if not s:
break
p.feed(s)
img = p.close()
basewidth = 500
wpercent = (basewidth / float(img.size[0]))
hsize = int((float(img.size[1]) * float(wpercent)))
outfile=img.resize((basewidth, hsize), PIL.Image.ANTIALIAS)
return outfile
#********* main code********
import os,sys
import ImageResizeF
import PIL
from PIL import Image
from PIL import Image,ImageFile
tpath = 'e:/.../resampling_test/all_tiles/'
tifext = '.tif'
east_start = 32511616
north_start = 5400756
ilist = range (0,14)
jlist = range (0,11)
north = north_start
ee = ',4_'
en = ',2'
for i in ilist:
east = east_start
north = north_start + i * 400
snorth = str (north)
for j in jlist:
east = east_start + j * 400
seast = str (east)
infile = tpath + seast + ee + snorth + en + tifext
output = tpath + seast + ee + snorth + en + '_res'+tifext
out_file = ImageResizeF.ResampleImage(infile)
out_file.write (output)
out_file.close ()
答案 0 :(得分:1)
您的错误可能与您从ImageResizeF.ResampleImage
返回的内容有关,是文件句柄吗?否则你做错了因为你不能关闭()不是文件句柄的东西。您应该在函数内部执行整个文件处理或返回图像对象,例如:
def process_image(image):
"Processes the image"
image.resize((x, y), Image.ANTIALIAS) # or whatever you are doing to the image
return image
image = Image.open('infile.tiff')
proc_image = process_image(image)
proc_image.save('outfile.tiff')