ImageGear for C and C++ on Windows v21.0 - Updated
API Reference Guide / Core Component API Reference / Core Component Functions Reference / Image Processing Functions / IG_IP_color_reduce_halftone
In This Topic
    IG_IP_color_reduce_halftone
    In This Topic

    Declaration:

     
    Copy Code
    AT_ERRCOUNT ACCUAPI IG_IP_color_reduce_halftone ( 
            HIGEAR hIGear, 
            AT_MODE nOption 
    );
    

    Arguments:

    Name Type Description
    hIGear HIGEAR HIGEAR handle of image.
    nOption AT_MODE Halftoning pattern - 0 for now (squares).

    Return Value:

    Returns the number of ImageGear errors that occurred during this function call.

    Supported Raster Image Formats:

    Indexed RGB – 4, 8 bpp;
    Grayscale – 4, 8 bpp;
    RGB – 24 bpp.

    Sample:

    None

    Example:

     
    Copy Code
    HIGEAR hIGear;    /* HIGEAR handle of 4, 8, or 24 bit image */
    /* Reduce to a 1-bit halftone image: */
    IG_IP_color_reduce_halftone ( hIGear, 0 );
    

    Remarks:

    This function reduces a color or grayscale image to a 1 bit per pixel image suitable for use in half-toning. The resulting image will consist of small squares of varying sizes that will give the appearance of varying shades of gray.

    See also the section in entitled Color Reduction.