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ImageCompressorQuantizeTo8bpp Method (Image, Color)

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Reduce file size by converting a 32bpp palletized map to an 8bpp indexed map.

Namespace:  Telogis.GeoBase.ImageUtils
Assembly:  geobase.net (in geobase.net.dll) Version: 4.99.0.0
Syntax
Copy
public static Bitmap QuantizeTo8bpp(
	Image img,
	Color[] remap
)

Parameters

img
Type: System.DrawingImage
The 32bit source Image.
remap
Type: System.DrawingColor
A list of colors to find nearest approximations for in the new image. These will be modified in place

Return Value

Type: Bitmap
A 8bit map.
Remarks
Use of this method will generally give a 25-50 percent reduction in file size when saved as a PNG. You should Dispose of the source image if you are no longer using it.
If your map has more than 256 colors the "best fit" pallette will be found.
See Also