[IPP] Is there a PWG standard for: print color and imaging adjustments?

[Anton Thomasson]

Dianne,

Color adjustments without any type of preview seems quite hit-and-miss
(many prints until you get it right - how would you know the size of a
step?).
If they could be previewed, they could just as well be effected locally,
and thus not be needed - so therefore i assume it would be "postview" only.

A color profile would be the more proper way to transfer/maintain a
calibration - obviously with a longer process to create it.
If you don't mind me asking; what would be the use-case for this in-between
concept and how do you envision it working without a dozen wasted prints
each time?

Br,
Anton

Den tis 19 nov. 2024 kl 21:26 skrev Kennedy, Smith (Wireless & IPP
Standards) via ipp <ipp at pwg.org>:

> Hi Dianne,
>
> Most printer vendors have "process" settings similar to those you
> describe. Generally the core philosophy of standard IPP is to convey
> "intent" (what is the desired outcome) rather than "process" (how it should
> be done). Many times the process settings are tightly coupled to the
> underlying engine technology (inkjet, laser, dye sublimation, etc.) and can
> also be dependent on printer vendor technology.
>
> Recognizing that, we added in IPP Driver Replacement Extensions v2.0 (PWG
> 5100.13-2023) a new "print-processing-attributes-supported" attribute,
> which provides a list of other attributes (standard and non-standard) that
> relate to "processing". This provides universal Clients (AirPrint, Mopria,
> IPP Everywhere) with a way to discover "process-related" attributes that
> can be presented in an "Advanced Settings" UI without having to know
> anything about the settings themselves (these almost always relate to
> actions taken by the Printer, not client-side). And it allow a Printer to
> list its process attributes (standard and vendor-unique). It basically
> provides a limited method of classification.
>
> We've not seen any client or printer vendors pick this up yet, but if this
> sounds interesting please encourage your firmware teams to adopt it and
> encourage your client partners to adopt it as well. 😊
>
> Hope this helps,
>
> Smith
>
> /**
>     Smith Kennedy
>     Wireless & IPP Standards - IPG-Print Platform Operations
>     IEEE ISTO Printer Working Group | Wi-Fi Alliance | Bluetooth SIG |
> Connectivity Standards Alliance
>     Vice Chair, IEEE ISTO Printer Working Group
>     HP Inc.
> */
>
>
> On Nov 19, 2024, at 12:02 PM, Colelli, Dianne via ipp <ipp at pwg.org> wrote:
>
> CAUTION: External Email
>
> Hi Mike,
> Thanks for the follow up.  We are looking for a way for a client to
> request adjustments to printed output image qualities (like lightness,
> contrast, saturation and color cast) with some granularity that could
> parallel a user interface offering a slider to select 'more' or 'less' of
> any of the image adjustment qualities.  We are considering something vendor
> specific for print, modeled after the input-attributes collection
> attribute.  However, leveraging standard attributes is preferred so I
> wanted to see if I was perhaps missing something.
>
> Thanks!
> Dianne Colelli   (she/her/hers)
> Software Systems Engineer
> Workplace Solutions Engineering
>
>
>
> Xerox Corporation
> 800 Phillips Road, Mailstop 0207-02Z
> Webster, NY 14580
> p  585-265-5089
>
>
>
> -----Original Message-----
> From: Michael Sweet <msweet at msweet.org>
> Sent: Tuesday, November 19, 2024 1:35 PM
> To: PWG IPP Workgroup <ipp at pwg.org>
> Cc: Colelli, Dianne <Dianne.Colelli at xerox.com>
> Subject: Re: [IPP] Is there a PWG standard for: print color and imaging
> adjustments?
>
> CAUTION:   This email originated from outside the organization. Do not
> click links or open attachments unless you recognize the sender and know
> the content is safe.
>
> Dianne,
>
> On Nov 19, 2024, at 12:44 PM, Colelli, Dianne via ipp <ipp at pwg.org> wrote:
>
> Hello,
> I found a PWG Proposed Standard from 2002- The Printer Working Group
> Standard for IPP: Color and Imaging Attributes (The Printer Working Group
> Standard for the Internet Printing Protocol (IPP): Color and Imaging
> Attributes) that includes attributes that for adjusting the printed image
> lightness, contrast, saturation (etc) with fine granularity.
>
>
> As you correctly surmised, that is an old (February 12, 2005) working
> draft that was never advanced.  IIRC, there wasn't enough support within
> the PWG to develop this as ICC profiles and standard color spaces were
> becoming more commonplace and we didn't want to "hardcode" color controls...
>
> I know we *did* include some of these controls in the FaxOut and Scan
> specs to control brightness and contrast for the scanner portion of the
> service.  See section 7.1.1 in the FaxOut specification for the definition
> of the "input-attributes" collection attribute:
>
>
> https://ftp.pwg.org/pub/pwg/candidates/cs-ippfaxout10-20140618-5100.15.pdf#page=24
>
> What kind of functionality are you looking for, i.e., what are you trying
> to do?
>
> ________________________
> Michael Sweet
>
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