Tagging images for external color correction.

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   perrstep,
Are you referring to the Colourspaces and their definition.

Have you looked at the GetPageColorSpaces function.  It might be possible to add an obj number to the output of this function but I would need to know if this is what you are needing ?

Andrew.

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AndrewC Members Profile Find Members Posts Moderator Group Joined: 08 Dec 10 Location: Geelong, Aust Status: Offline Points: 841	Post Options Post Reply Quote AndrewC Report Post Thanks(0) Quote Reply Topic: Tagging images for external color correction. Posted: 12 Sep 13 at 11:21AM
	perrstep, Are you referring to the Colourspaces and their definition. Have you looked at the GetPageColorSpaces function. It might be possible to add an obj number to the output of this function but I would need to know if this is what you are needing ? Andrew.

Ingo Members Profile Find Members Posts Moderator Group Joined: 29 Oct 05 Status: Offline Points: 3524	Post Options Post Reply Quote Ingo Report Post Thanks(0) Quote Reply Posted: 06 Sep 13 at 7:23AM
	Hi! Things like this (object numbers) i'm doing by my own. Saving the loaded pdf decrypted. Then searching/counting inside the stream for obj-tags. Cheers and welcome here, Ingo
	Cheers, Ingo

perrstep Members Profile Find Members Posts Beginner Joined: 05 Sep 13 Status: Offline Points: 2	Post Options Post Reply Quote perrstep Report Post Thanks(0) Quote Reply Posted: 05 Sep 13 at 8:18PM
	Hi, The company I work for has a client who requires us to provide a manifest of images that need color correction before printing in the PDF files we produce them. That manifest has to refer to the actual object number that identifies those objects in the PDF files (eg the "obj" tag in the PDF spec.) I would need some advice or ideas on how to accomplish that. I started by looking for functions that return object numbers. The only trick I found to retrieve an object number was to call GetObjectCount immediately after having added an image with AddImageFromFile. That seemed to return the object number that is used in the PDF file. Am I right in assuming this? But to complicate things further, we are merging PDF files together before handing them to our customer. The object numbers that I collected earlier don't survive a merge. So I thought I could tag image objects with some metada just like what we can do today with SetDocumentMetadata, so I could recuperate that information after all our PDFs are merged. But I found nothing to do that. Is it possible to add this functionnality? Also, is it possible to add functions to navigate easily from image ID to object number in the PDF file? Thanks in advance you for your time.