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# rgb_to_luminance_fn Struct Template Reference

`#include <color_convert.hpp>`

List of all members.

## Detailed Description

### template<typename RedChannel, typename GreenChannel, typename BlueChannel, typename GrayChannelValue>
struct boost::gil::detail::rgb_to_luminance_fn< RedChannel, GreenChannel, BlueChannel, GrayChannelValue >

red * .3 + green * .59 + blue * .11 + .5

## Public Member Functions

GrayChannelValue | operator() (const RedChannel &red, const GreenChannel &green, const BlueChannel &blue) const

The documentation for this struct was generated from the following file:

- color_convert.hpp