ImageGear for C and C++ on Windows v20.5 - Updated
IG_IP_color_reduce_popularity
API Reference Guide > Core Component API Reference > Core Component Functions Reference > Image Processing Functions > IG_IP_color_reduce_popularity

This function reduces a 24-bit image to an 8-bit image while retaining its most popular, or prevalent, colors.

Declaration:

 
Copy Code
AT_ERRCOUNT ACCUAPI IG_IP_color_reduce_popularity ( 
        HIGEAR hIGear, 
        BOOL bFastRemap, 
        UINT nMaxColors 
);

Arguments:

Name Type Description
hIGear HIGEAR HIGEAR handle of image.
bFastRemap BOOL Set = TRUE for reduction algorithm optimized for speed. Set = FALSE for algorithm optimized for quality.
nMaxColors UINT Number of colors to which to reduce.

Return Value:

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

Supported Raster Image Formats:

RGB – 24 bpp.

Sample:

None

Example:

 
Copy Code
HIGEAR hIGear;     /* HIGEAR handle of image */
/* Reduce to 64 colors using octree algorithm   */
IG_IP_color_reduce_popularity ( hIGear, FALSE, 64 );

Remarks:

Use nMaxColors to specify the maximum number of colors wanted in the result.

See also the section in entitled Color Reduction.
Is this page helpful?
Yes No
Thanks for your feedback.