[Olena-patches] olena: olena-2.0-618-gaab2c29 Add section Conversion of RGB Images in examples part.

* src/milena/doc/examples.dox, * src/milena/doc/examples/cv_to_mln.cc, * src/milena/doc/examples/ffmpeg_to_mln.cc, * src/milena/doc/examples/mln_to_cv.cc, * src/milena/doc/examples/mln_to_ffmpeg.cc: Here. --- milena/doc/examples.dox | 8 +++++++ milena/doc/examples/cv_to_mln.cc | 22 ++++++++++++++++++++ milena/doc/examples/ffmpeg_to_mln.cc | 28 +++++++++++++++++++++++++ milena/doc/examples/mln_to_cv.cc | 23 ++++++++++++++++++++ milena/doc/examples/mln_to_ffmpeg.cc | 38 ++++++++++++++++++++++++++++++++++ 5 files changed, 119 insertions(+) create mode 100644 milena/doc/examples/cv_to_mln.cc create mode 100644 milena/doc/examples/ffmpeg_to_mln.cc create mode 100644 milena/doc/examples/mln_to_cv.cc create mode 100644 milena/doc/examples/mln_to_ffmpeg.cc diff --git a/milena/doc/examples.dox b/milena/doc/examples.dox index e81f600..d55e624 100644 --- a/milena/doc/examples.dox +++ b/milena/doc/examples.dox @@ -20,5 +20,13 @@ \section exampleswin Windows \li \link doc/examples/window_iterator.cc Iteration w.r.t. a window \endlink + +\section examplesconv Conversion of RGB Images +\subsection Opencv +\li \link doc/examples/mln_to_cv.cc Milena to Opencv. \endlink +\li \link doc/examples/cv_to_mln.cc Opencv to Milena. \endlink +\subsection FFmpeg +\li \link doc/examples/mln_to_ffmpeg.cc Milena to FFmpeg. \endlink +\li \link doc/examples/ffmpeg_to_mln.cc FFmpeg to Milena. \endlink */ diff --git a/milena/doc/examples/cv_to_mln.cc b/milena/doc/examples/cv_to_mln.cc new file mode 100644 index 0000000..878e6e8 --- /dev/null +++ b/milena/doc/examples/cv_to_mln.cc @@ -0,0 +1,22 @@ +#include <mln/core/image/image2d.hh> +#include <mln/value/rgb8.hh> +#include "opencv/highgui.h" +#include "opencv2/imgproc/imgproc.hpp" + +using namespace cv; +using namespace mln; +using value::rgb8; + +image2d<value::rgb8> opencv_to_milena(cv::Mat cv_img) { + + image2d<value::rgb8> mln_img(cv_img.rows, cv_img.cols); + + for (unsigned x = 0; x < mln_img.ncols(); ++x) { + for (unsigned y = 0; y < mln_img.nrows(); ++y) { + mln_img(mln::point2d(y, x)).red() = cv_img.at<Vec3b>(y, x).val[2]; + mln_img(mln::point2d(y, x)).green() = cv_img.at<Vec3b>(y, x).val[1]; + mln_img(mln::point2d(y, x)).blue() = cv_img.at<Vec3b>(y, x).val[0]; + } + } + return mln_img; +} diff --git a/milena/doc/examples/ffmpeg_to_mln.cc b/milena/doc/examples/ffmpeg_to_mln.cc new file mode 100644 index 0000000..eb86dd8 --- /dev/null +++ b/milena/doc/examples/ffmpeg_to_mln.cc @@ -0,0 +1,28 @@ +#include <mln/core/image/image2d.hh> +#include <mln/value/rgb8.hh> +extern "C" { + +#include <libavcodec/avcodec.h> +#include <libavformat/avformat.h> +#include <libavutil/avutil.h> +#include <libavutil/imgutils.h> +#include <libswscale/swscale.h> + +} + +image2d<value::rgb8> copy_AvFrame_to_image2d_rgb(AVFrame *ffmpeg_img) { + + image2d<value::rgb8> mln_img(ffmpeg_img->height, ffmpeg_img->width); + + value::rgb8 *img_mln_ptr = &mln_img(mln_img.domain().pmin()); + unsigned img_mln_nextline = mln_img.delta_offset(dpoint2d(+1, 0)); + unsigned nrows = geom::nrows(mln_img); + uint8_t *img_ffmpeg_ptr = ffmpeg_img->data[0]; + + for (unsigned int row = 0; row < nrows; ++row) { + std::memcpy(img_mln_ptr, img_ffmpeg_ptr, ffmpeg_img->width * 3); + img_mln_ptr += img_mln_nextline; + img_ffmpeg_ptr += ffmpeg_img->linesize[0]; + } + return mln_img; +} diff --git a/milena/doc/examples/mln_to_cv.cc b/milena/doc/examples/mln_to_cv.cc new file mode 100644 index 0000000..501de14 --- /dev/null +++ b/milena/doc/examples/mln_to_cv.cc @@ -0,0 +1,23 @@ +#include <mln/core/image/image2d.hh> +#include <mln/value/rgb8.hh> +#include "opencv/highgui.h" +#include "opencv2/imgproc/imgproc.hpp" + +using namespace cv; +using namespace mln; +using value::rgb8; + +cv::Mat milena_to_opencv(image2d<value::rgb8> mln_img) { + + cv::Mat cv_img(mln_img.nrows(), mln_img.ncols(), CV_8UC3); + + for (unsigned x = 0; x < mln_img.ncols(); ++x) { + for (unsigned y = 0; y < mln_img.nrows(); ++y) { + Vec3b intensity(mln_img(mln::point2d(y, x)).blue(), + mln_img(mln::point2d(y, x)).green(), + mln_img(mln::point2d(y, x)).red()); + cv_img.at<Vec3b>(y, x) = intensity; + } + } + return cv_img; +} diff --git a/milena/doc/examples/mln_to_ffmpeg.cc b/milena/doc/examples/mln_to_ffmpeg.cc new file mode 100644 index 0000000..1187c69 --- /dev/null +++ b/milena/doc/examples/mln_to_ffmpeg.cc @@ -0,0 +1,38 @@ +#include <mln/core/image/image2d.hh> +#include <mln/value/rgb8.hh> +extern "C" { + +#include <libavcodec/avcodec.h> +#include <libavformat/avformat.h> +#include <libavutil/avutil.h> +#include <libavutil/imgutils.h> +#include <libswscale/swscale.h> + +} + +AVFrame* copy_image2d_rgb_to_AvFame(image2d<value::rgb8> mln_img) { + + int w = mln_img.ncols(); + int h = mln_img.nrows(); + + AVFrame *ffmpeg_img; + ffmpeg_img = avcodec_alloc_frame(); + + ffmpeg_img->linesize[0] = w * 3; + ffmpeg_img->width = w; + av_image_alloc(ffmpeg_img->data, ffmpeg_img->linesize, w, h, PIX_FMT_RGB24, 1); + + uint8_t *img_ffmpeg_ptr = ffmpeg_img->data[0]; + + value::rgb8 *img_mln_ptr = &mln_img(mln_img.domain().pmin()); + unsigned img_mln_nextline = mln_img.delta_offset(dpoint2d(+1, 0)); + unsigned nrows = ffmpeg_img->height = h; + + for (unsigned int row = 0; row < nrows; ++row) { + std::memcpy(img_ffmpeg_ptr, img_mln_ptr, w * 3); + img_mln_ptr += img_mln_nextline; + img_ffmpeg_ptr += ffmpeg_img->linesize[0]; + } + + return ffmpeg_img; +} -- 1.7.10.4