Re: [Boost-users] [gil] bad_cast exception

Olivier, you can cast the any_image to any of the images you specified. Then you can easily apply the nth_channel_view() function. Something like this: typedef mpl::vector< gray8_image_t , rgb8_image_t >::type my_img_types_t; typedef nth_channel_view_type< rgb8_image_t::view_t >::type channel_view_t; any_image< my_img_types_t > runtime_image; rgb8_view_t v( view( runtime_image._dynamic_cast()) ); channel_view_t cv = nth_channel_view( v, 0 ); Hope that helps. Regards, Christian