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/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of the copyright holders may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
//M*/
#include "precomp.hpp"
namespace cv {
namespace detail {
void ProjectorBase::setCameraParams(InputArray _K, InputArray _R, InputArray _T)
{
Mat K = _K.getMat(), R = _R.getMat(), T = _T.getMat();
CV_Assert(K.size() == Size(3, 3) && K.type() == CV_32F);
CV_Assert(R.size() == Size(3, 3) && R.type() == CV_32F);
CV_Assert((T.size() == Size(1, 3) || T.size() == Size(3, 1)) && T.type() == CV_32F);
Mat_<float> K_(K);
k[0] = K_(0,0); k[1] = K_(0,1); k[2] = K_(0,2);
k[3] = K_(1,0); k[4] = K_(1,1); k[5] = K_(1,2);
k[6] = K_(2,0); k[7] = K_(2,1); k[8] = K_(2,2);
Mat_<float> Rinv = R.t();
rinv[0] = Rinv(0,0); rinv[1] = Rinv(0,1); rinv[2] = Rinv(0,2);
rinv[3] = Rinv(1,0); rinv[4] = Rinv(1,1); rinv[5] = Rinv(1,2);
rinv[6] = Rinv(2,0); rinv[7] = Rinv(2,1); rinv[8] = Rinv(2,2);
Mat_<float> R_Kinv = R * K.inv();
r_kinv[0] = R_Kinv(0,0); r_kinv[1] = R_Kinv(0,1); r_kinv[2] = R_Kinv(0,2);
r_kinv[3] = R_Kinv(1,0); r_kinv[4] = R_Kinv(1,1); r_kinv[5] = R_Kinv(1,2);
r_kinv[6] = R_Kinv(2,0); r_kinv[7] = R_Kinv(2,1); r_kinv[8] = R_Kinv(2,2);
Mat_<float> K_Rinv = K * Rinv;
k_rinv[0] = K_Rinv(0,0); k_rinv[1] = K_Rinv(0,1); k_rinv[2] = K_Rinv(0,2);
k_rinv[3] = K_Rinv(1,0); k_rinv[4] = K_Rinv(1,1); k_rinv[5] = K_Rinv(1,2);
k_rinv[6] = K_Rinv(2,0); k_rinv[7] = K_Rinv(2,1); k_rinv[8] = K_Rinv(2,2);
Mat_<float> T_(T.reshape(0, 3));
t[0] = T_(0,0); t[1] = T_(1,0); t[2] = T_(2,0);
}
Point2f PlaneWarper::warpPoint(const Point2f &pt, InputArray K, InputArray R, InputArray T)
{
projector_.setCameraParams(K, R, T);
Point2f uv;
projector_.mapForward(pt.x, pt.y, uv.x, uv.y);
return uv;
}
Rect PlaneWarper::buildMaps(Size src_size, InputArray K, InputArray R, InputArray T, OutputArray _xmap, OutputArray _ymap)
{
projector_.setCameraParams(K, R, T);
Point dst_tl, dst_br;
detectResultRoi(src_size, dst_tl, dst_br);
_xmap.create(dst_br.y - dst_tl.y + 1, dst_br.x - dst_tl.x + 1, CV_32F);
_ymap.create(dst_br.y - dst_tl.y + 1, dst_br.x - dst_tl.x + 1, CV_32F);
Mat xmap = _xmap.getMat(), ymap = _ymap.getMat();
float x, y;
for (int v = dst_tl.y; v <= dst_br.y; ++v)
{
for (int u = dst_tl.x; u <= dst_br.x; ++u)
{
projector_.mapBackward(static_cast<float>(u), static_cast<float>(v), x, y);
xmap.at<float>(v - dst_tl.y, u - dst_tl.x) = x;
ymap.at<float>(v - dst_tl.y, u - dst_tl.x) = y;
}
}
return Rect(dst_tl, dst_br);
}
Point PlaneWarper::warp(InputArray src, InputArray K, InputArray R, InputArray T, int interp_mode, int border_mode,
OutputArray dst)
{
Mat xmap, ymap;
Rect dst_roi = buildMaps(src.size(), K, R, T, xmap, ymap);
dst.create(dst_roi.height + 1, dst_roi.width + 1, src.type());
remap(src, dst, xmap, ymap, interp_mode, border_mode);
return dst_roi.tl();
}
Rect PlaneWarper::warpRoi(Size src_size, InputArray K, InputArray R, InputArray T)
{
projector_.setCameraParams(K, R, T);
Point dst_tl, dst_br;
detectResultRoi(src_size, dst_tl, dst_br);
return Rect(dst_tl, Point(dst_br.x + 1, dst_br.y + 1));
}
void PlaneWarper::detectResultRoi(Size src_size, Point &dst_tl, Point &dst_br)
{
float tl_uf = std::numeric_limits<float>::max();
float tl_vf = std::numeric_limits<float>::max();
float br_uf = -std::numeric_limits<float>::max();
float br_vf = -std::numeric_limits<float>::max();
float u, v;
projector_.mapForward(0, 0, u, v);
tl_uf = std::min(tl_uf, u); tl_vf = std::min(tl_vf, v);
br_uf = std::max(br_uf, u); br_vf = std::max(br_vf, v);
projector_.mapForward(0, static_cast<float>(src_size.height - 1), u, v);
tl_uf = std::min(tl_uf, u); tl_vf = std::min(tl_vf, v);
br_uf = std::max(br_uf, u); br_vf = std::max(br_vf, v);
projector_.mapForward(static_cast<float>(src_size.width - 1), 0, u, v);
tl_uf = std::min(tl_uf, u); tl_vf = std::min(tl_vf, v);
br_uf = std::max(br_uf, u); br_vf = std::max(br_vf, v);
projector_.mapForward(static_cast<float>(src_size.width - 1), static_cast<float>(src_size.height - 1), u, v);
tl_uf = std::min(tl_uf, u); tl_vf = std::min(tl_vf, v);
br_uf = std::max(br_uf, u); br_vf = std::max(br_vf, v);
dst_tl.x = static_cast<int>(tl_uf);
dst_tl.y = static_cast<int>(tl_vf);
dst_br.x = static_cast<int>(br_uf);
dst_br.y = static_cast<int>(br_vf);
}
void SphericalWarper::detectResultRoi(Size src_size, Point &dst_tl, Point &dst_br)
{
detectResultRoiByBorder(src_size, dst_tl, dst_br);
float tl_uf = static_cast<float>(dst_tl.x);
float tl_vf = static_cast<float>(dst_tl.y);
float br_uf = static_cast<float>(dst_br.x);
float br_vf = static_cast<float>(dst_br.y);
float x = projector_.rinv[1];
float y = projector_.rinv[4];
float z = projector_.rinv[7];
if (y > 0.f)
{
float x_ = (projector_.k[0] * x + projector_.k[1] * y) / z + projector_.k[2];
float y_ = projector_.k[4] * y / z + projector_.k[5];
if (x_ > 0.f && x_ < src_size.width && y_ > 0.f && y_ < src_size.height)
{
tl_uf = std::min(tl_uf, 0.f); tl_vf = std::min(tl_vf, static_cast<float>(CV_PI * projector_.scale));
br_uf = std::max(br_uf, 0.f); br_vf = std::max(br_vf, static_cast<float>(CV_PI * projector_.scale));
}
}
x = projector_.rinv[1];
y = -projector_.rinv[4];
z = projector_.rinv[7];
if (y > 0.f)
{
float x_ = (projector_.k[0] * x + projector_.k[1] * y) / z + projector_.k[2];
float y_ = projector_.k[4] * y / z + projector_.k[5];
if (x_ > 0.f && x_ < src_size.width && y_ > 0.f && y_ < src_size.height)
{
tl_uf = std::min(tl_uf, 0.f); tl_vf = std::min(tl_vf, static_cast<float>(0));
br_uf = std::max(br_uf, 0.f); br_vf = std::max(br_vf, static_cast<float>(0));
}
}
dst_tl.x = static_cast<int>(tl_uf);
dst_tl.y = static_cast<int>(tl_vf);
dst_br.x = static_cast<int>(br_uf);
dst_br.y = static_cast<int>(br_vf);
}
#ifdef HAVE_OPENCV_CUDAWARPING
Rect PlaneWarperGpu::buildMaps(Size src_size, InputArray K, InputArray R, cuda::GpuMat & xmap, cuda::GpuMat & ymap)
{
return buildMaps(src_size, K, R, Mat::zeros(3, 1, CV_32F), xmap, ymap);
}
Rect PlaneWarperGpu::buildMaps(Size src_size, InputArray K, InputArray R, InputArray T, cuda::GpuMat & xmap, cuda::GpuMat & ymap)
{
projector_.setCameraParams(K, R, T);
Point dst_tl, dst_br;
detectResultRoi(src_size, dst_tl, dst_br);
cuda::buildWarpPlaneMaps(src_size, Rect(dst_tl, Point(dst_br.x + 1, dst_br.y + 1)),
K, R, T, projector_.scale, xmap, ymap);
return Rect(dst_tl, dst_br);
}
Point PlaneWarperGpu::warp(const cuda::GpuMat & src, InputArray K, InputArray R, int interp_mode, int border_mode,
cuda::GpuMat & dst)
{
return warp(src, K, R, Mat::zeros(3, 1, CV_32F), interp_mode, border_mode, dst);
}
Point PlaneWarperGpu::warp(const cuda::GpuMat & src, InputArray K, InputArray R, InputArray T, int interp_mode, int border_mode,
cuda::GpuMat & dst)
{
Rect dst_roi = buildMaps(src.size(), K, R, T, d_xmap_, d_ymap_);
dst.create(dst_roi.height + 1, dst_roi.width + 1, src.type());
cuda::remap(src, dst, d_xmap_, d_ymap_, interp_mode, border_mode);
return dst_roi.tl();
}
Rect SphericalWarperGpu::buildMaps(Size src_size, InputArray K, InputArray R, cuda::GpuMat & xmap, cuda::GpuMat & ymap)
{
projector_.setCameraParams(K, R);
Point dst_tl, dst_br;
detectResultRoi(src_size, dst_tl, dst_br);
cuda::buildWarpSphericalMaps(src_size, Rect(dst_tl, Point(dst_br.x + 1, dst_br.y + 1)),
K, R, projector_.scale, xmap, ymap);
return Rect(dst_tl, dst_br);
}
Point SphericalWarperGpu::warp(const cuda::GpuMat & src, InputArray K, InputArray R, int interp_mode, int border_mode,
cuda::GpuMat & dst)
{
Rect dst_roi = buildMaps(src.size(), K, R, d_xmap_, d_ymap_);
dst.create(dst_roi.height + 1, dst_roi.width + 1, src.type());
cuda::remap(src, dst, d_xmap_, d_ymap_, interp_mode, border_mode);
return dst_roi.tl();
}
Rect CylindricalWarperGpu::buildMaps(Size src_size, InputArray K, InputArray R, cuda::GpuMat & xmap, cuda::GpuMat & ymap)
{
projector_.setCameraParams(K, R);
Point dst_tl, dst_br;
detectResultRoi(src_size, dst_tl, dst_br);
cuda::buildWarpCylindricalMaps(src_size, Rect(dst_tl, Point(dst_br.x + 1, dst_br.y + 1)),
K, R, projector_.scale, xmap, ymap);
return Rect(dst_tl, dst_br);
}
Point CylindricalWarperGpu::warp(const cuda::GpuMat & src, InputArray K, InputArray R, int interp_mode, int border_mode,
cuda::GpuMat & dst)
{
Rect dst_roi = buildMaps(src.size(), K, R, d_xmap_, d_ymap_);
dst.create(dst_roi.height + 1, dst_roi.width + 1, src.type());
cuda::remap(src, dst, d_xmap_, d_ymap_, interp_mode, border_mode);
return dst_roi.tl();
}
#endif
void SphericalPortraitWarper::detectResultRoi(Size src_size, Point &dst_tl, Point &dst_br)
{
detectResultRoiByBorder(src_size, dst_tl, dst_br);
float tl_uf = static_cast<float>(dst_tl.x);
float tl_vf = static_cast<float>(dst_tl.y);
float br_uf = static_cast<float>(dst_br.x);
float br_vf = static_cast<float>(dst_br.y);
float x = projector_.rinv[0];
float y = projector_.rinv[3];
float z = projector_.rinv[6];
if (y > 0.f)
{
float x_ = (projector_.k[0] * x + projector_.k[1] * y) / z + projector_.k[2];
float y_ = projector_.k[4] * y / z + projector_.k[5];
if (x_ > 0.f && x_ < src_size.width && y_ > 0.f && y_ < src_size.height)
{
tl_uf = std::min(tl_uf, 0.f); tl_vf = std::min(tl_vf, static_cast<float>(CV_PI * projector_.scale));
br_uf = std::max(br_uf, 0.f); br_vf = std::max(br_vf, static_cast<float>(CV_PI * projector_.scale));
}
}
x = projector_.rinv[0];
y = -projector_.rinv[3];
z = projector_.rinv[6];
if (y > 0.f)
{
float x_ = (projector_.k[0] * x + projector_.k[1] * y) / z + projector_.k[2];
float y_ = projector_.k[4] * y / z + projector_.k[5];
if (x_ > 0.f && x_ < src_size.width && y_ > 0.f && y_ < src_size.height)
{
tl_uf = std::min(tl_uf, 0.f); tl_vf = std::min(tl_vf, static_cast<float>(0));
br_uf = std::max(br_uf, 0.f); br_vf = std::max(br_vf, static_cast<float>(0));
}
}
dst_tl.x = static_cast<int>(tl_uf);
dst_tl.y = static_cast<int>(tl_vf);
dst_br.x = static_cast<int>(br_uf);
dst_br.y = static_cast<int>(br_vf);
}
} // namespace detail
} // namespace cv

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