[Boost-users] [gil] raw image resizing problem

Subject: [Boost-users] [gil] raw image resizing problem
From: Stephan Menzel (stephan.menzel_at_[hidden])
Date: 2009-05-04 08:58:03

Hi there,

I'm trying to resize an image that comes as a raw RGB8 interleaved buffer into another buffer.

According to the resize.cpp sample that comes with boost that should work like this:

#include <boost/gil/image.hpp>
#include <boost/gil/image_view_factory.hpp>
#include <boost/gil/typedefs.hpp>
#include <boost/gil/extension/numeric/sampler.hpp>
#include <boost/gil/extension/numeric/resample.hpp>

using namespace boost::gil;

rgb8_view_t view = interleaved_view(orig_width, orig_height, reinterpret_cast<rgb8_ptr_t>(original_buffer), orig_width * 3);
rgb8_image_t scaled(new_width, new_height);
resize_view(view, view(scaled), bilinear_sampler());

I'm getting an compile error in the resize_image line though and don't know what to make of it:

 : error C2664: 'boost::gil::pixel<ChannelValue,Layout> &boost::gil::image_view<Loc>::operator ()(const boost::gil::point2<T> &) const' : cannot convert parameter 1 from 'boost::gil::rgb8_image_t' to 'const boost::gil::point2<T> &'
1>        with
1>        [
1>            ChannelValue=boost::gil::bits8,
1>            Layout=boost::gil::rgb_layout_t,
1>            Loc=boost::gil::rgb8_loc_t,
1>            T=ptrdiff_t
1>        ]
1>        and
1>        [
1>            T=ptrdiff_t
1>        ]
1>        Reason: cannot convert from 'boost::gil::rgb8_image_t' to 'const boost::gil::point2<T>'
1>        with
1>        [
1>            T=ptrdiff_t
1>        ]
1>        No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called

Any ideas?

Thanks...

Stephan