grayscale – RGB. Is this a bug?

D
Posted By
dermotp
Jul 1, 2003
Views
352
Replies
1
Status
Closed
I have a RGB untagged jpeg. It is assigned a ICC profile and saved with the profile. I then read the image header using another program (ImageMagick on UNIX) and the image is described as grayscale, previously it was type "true color". If it is converted to a jpeg using IM and reopened in PS, there is an ICC error and the file is opened as a grayscale. If the process above is repeated but the original file is not saved with an ICC profile, the image remains true color and can cross seemlessly between applications. I think the meta-data for type is not being correctly set. An image may be grayscale in that all the RGB values may be the same but it is confusing to say an image is grayscale and single channel when there are are 3 channels.
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bug grayscale rgb

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Y
YrbkMgr
Jul 1, 2003
Just to be sure I got this….

You open an image (scanned or otherwise) and it has no profile. Then you Image|Mode|Assign profile and save the image. Then, whether you reopen in IM or not, when you reopen it in PS, the profile is corrupted and opens in Grayscale?

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