Re: Grayify image with sane_contro_ option()

From: Oliver Rauch (oliver.rauch@rauch-domain.de)
Date: Thu May 24 2001 - 07:13:41 PDT

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    shailendra mehta wrote:
    >
    > Hi all,
    >
    > Can ananybody tell me how to set scan mode of a scanner so as to acquire a
    > gray image?
    > I have seen "grayify" as control option for PNM backend. But no such option
    > in any other backend.
    > So how it is for other backends?
    > Also what is the suitable backend for hp5300c scanner ?
    > Pls help me out!!!!!!!!1
    >
    Hi.

    The suggested way is an option "mode" (SANE_NAME_SCAN_MODE in saneopts.h).
    E.g. the umax backend uses scanmodes "Color", "Gray" and "Lineart".
    There are other backends that do it the same or a similar way.
    But pay attention that this is not defined as a well known option
    in the current sane standard.

    Bye
    Oliver 

    -- 
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