I found a so wired thing while converting a pdf to jpeg, so i'd like to figure out that maybe this is a small bug. See the converted jpg below, you could find that, the background color are all black. The image is here: www.shdowin.com/public/02.jpg
However, in the source file of pdf, you can see that the background color are normal white. The image is here: www.shdowin.com/public/normal.jpg
I thought this maybe my pdf file's fault, however, when i try to use Acrobat.pdf2image in .NET environment, the converted jpg shows correctly.
Here is my code:
from wand.image import Image
from wand.color import Color
import os, os.path, sys
def pdf2jpg(source_file, target_file, dest_width, dest_height):
RESOLUTION = 300
ret = True
try:
with Image(filename=source_file, resolution=(RESOLUTION,RESOLUTION)) as img:
img.background_color = Color('white')
img_width = img.width
ratio = dest_width / img_width
img.resize(dest_width, int(ratio * img.height))
img.format = 'jpeg'
img.save(filename = target_file)
except Exception as e:
ret = False
return ret
if __name__ == "__main__":
source_file = "./02.pdf"
target_file = "./02.jpg"
ret = pdf2jpg(source_file, target_file, 1895, 1080)
Any suggestions for the issue?
I have uploaded the pdf to the url: 02.pdf
You can try...
For others who still have this problem I fixed it after googling and trying a couple of hours thanks to this question https://stackoverflow.com/a/40494320/2686243 by using this two lines:
img.background_color = Color("white")
img.alpha_channel = 'remove'
Tried with Wand version 0.4.4