[reportlab-users] Patch for inclusion of CMYK images as CMYK, not converted to RGB

[Stevens, Ian]

Looks good. I use ImageMagick for most of my images. If you specify a
-colorspace CMYK parameter, it will output a CMYK image:


> convert logo: -colorspace CMYK logo.jpg

> identify -verbose logo.jpg | head -13

Image: logo.jpg
  Format: JPEG (Joint Photographic Experts Group JFIF format)
  Class: DirectClass
  Geometry: 641x481+0+0
  Type: ColorSeparation
  Endianess: Undefined
  Colorspace: CMYK
  Depth: 8-bit
  Channel depth:
    Cyan: 1-bit
    Magenta: 8-bit
    Yellow: 8-bit
    Black: 8-bit

Also found this simple image online:
http://labs.teppefall.com/cmyk_test2.jpg

Sorry, I don't have anything more definitive. Someone else might be able
to help out with that.

Ian.


> -----Original Message-----

> From: reportlab-users-bounces at reportlab.com 

> [mailto:reportlab-users-bounces at reportlab.com] On Behalf Of 

> Robin Becker

> Sent: February 3, 2009 4:29 PM

> To: Support list for users of Reportlab software

> Subject: Re: [reportlab-users] Patch for inclusion of CMYK 

> images as CMYK, not converted to RGB

> 

> Stevens, Ian wrote:

> > Also, you'll want to remove the first call to 

> image.convert('RGB') on 

> > line 98.

> > 

> .....

> OK redone, can you check when time permits? Also is there an 

> image which we could use to see that stuff is right? Doesn't 

> have to be anything pretty four stripes would be enough.

> --

> Robin Becker

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