使用 Pillow ImageCMS 将 icc 颜色配置文件插入图像

Question

I am trying to insert an ICC color profile into an image. Using code from this post as an example my code looks like this:

from PIL import Image, ImageCms

# Read image
img = Image.open(IMG_PATH)

# Read profile
profile = ImageCms.getOpenProfile(PROFILE_PATH)

# Save image with profile
img.save(OUT_IMG_PATH, icc_profile=profile)

I get the following error

Traceback (most recent call last):
  File "/home/----/Documents/code_projects/hfss-misc/icc_profiles/insert_icc_profile_into_image.py", line 17, in <module>
    img.save(OUT_IMG_PATH, icc_profile=srgb_profile)
  File "/home/----/.virtualenvs/color-correction/lib/python3.6/site-packages/PIL/Image.py", line 2102, in save
    save_handler(self, fp, filename)
  File "/home/----/.virtualenvs/color-correction/lib/python3.6/site-packages/PIL/JpegImagePlugin.py", line 706, in _save
    markers.append(icc_profile[:MAX_DATA_BYTES_IN_MARKER])
TypeError: 'PIL._imagingcms.CmsProfile' object is not subscriptable

I thought that there might be a problem with my ICC profile so I tried to use one generated by Pillow.

from PIL import Image, ImageCms

# Read image
img = Image.open(IMG_PATH)

# Creating sRGB profile
profile = ImageCms.createProfile("sRGB")

# Save image with profile
img.save(OUT_IMG_PATH, icc_profile=profile)

I still get the same error, however.

Does anyone know what the cause for this error is?

My system environment is as follows:

• Ubuntu 18.04
• Python 3.6
• Pillow==7.0.0

Answer 1

The answer from github at ( https://github.com/python-pillow/Pillow/issues/4464 ) was to use profile.to_bytes() :

img.save(OUT_IMG_PATH, icc_profile=profile.tobytes())