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Automatic color detection

Forums › TWAIN Specification › TWAIN Specification Discussion › Automatic color detection

  • This topic has 1 reply, 1 voice, and was last updated 3 years, 5 months ago by MarkM.
Viewing 2 posts - 1 through 2 (of 2 total)
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  • February 27, 2015 at 7:55 am #22996 Reply
    yip.stephen
    Participant
    • Topics - 1
    • Replies - 0
    • Total Posts - 1

    Dear Sir/Madam,

    I have some scanners which claimed to have “automatic color detection” feature.

    As I know, TWAIN 2.1 support such feature. How can I:
    1. know whether my scanner on hand support it (e.g. by getting capabilities like ICAP_AUTOMATICCOLORENABLED or something else)?
    2. If my scanner support it, how can I enable it during scanning? Currently I set the ICAP_PIXELTYPE to BW (0), GRAY (1) or RGB (2) during scanning. Should the value be different for auto. color detection? Any other step is required?

    Thanks a lot!
    Stephen

    August 23, 2017 at 11:50 am #30524 Reply
    MarkM
    • Topics - 94
    • Replies - 186
    • Total Posts - 280

    If CAP_SUPPORTEDCAPS includes ICAP_AUTOMATICCOLORENABLED, then the capability is present. Setting it to TRUE is sufficient to turn on the feature. There’s an additional capability that decides if non-color data should be output as TWPT_BW or TWPT_GRAY. The determination of what is color and what isn’t color is up to the scanner. Changing it may require access to custom capabilities.

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