libs/gil/example/affine.cpp
/*
Copyright 2005-2007 Adobe Systems Incorporated
Use, modification and distribution are subject to the Boost Software License,
Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt).
See http://opensource.adobe.com/gil for most recent version including documentation.
*/
/*************************************************************************************************/
///////////////////////
//// NOTE: This sample file uses the numeric extension, which does not come with the Boost distribution.
//// You may download it from http://opensource.adobe.com/gil
///////////////////////
/// \file
/// \brief Test file for resample_pixels() in the numeric extension
/// \author Lubomir Bourdev and Hailin Jin
/// \date February 27, 2007
#include <boost/gil/image.hpp>
#include <boost/gil/typedefs.hpp>
#include <boost/gil/extension/io/jpeg_io.hpp>
#include <boost/gil/extension/numeric/sampler.hpp>
#include <boost/gil/extension/numeric/resample.hpp>
int main() {
using namespace boost::gil;
rgb8_image_t img;
jpeg_read_image("test.jpg",img);
// test resample_pixels
// Transform the image by an arbitrary affine transformation using nearest-neighbor resampling
rgb8_image_t transf(rgb8_image_t::point_t(view(img).dimensions()*2));
fill_pixels(view(transf),rgb8_pixel_t(255,0,0)); // the background is red
matrix3x2<double> mat = matrix3x2<double>::get_translate(-point2<double>(200,250)) *
matrix3x2<double>::get_rotate(-15*3.14/180.0);
resample_pixels(const_view(img), view(transf), mat, nearest_neighbor_sampler());
jpeg_write_view("out-affine.jpg", view(transf));
return 0;
}