/OpenCV-2.4.0/samples/cpp/stitching_detailed.cpp
C++ | 748 lines | 616 code | 71 blank | 61 comment | 231 complexity | c751a856d79dd8092a3ec29ff196bd1d MD5 | raw file
Possible License(s): BSD-3-Clause
- /*M///////////////////////////////////////////////////////////////////////////////////////
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- //
- // 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.
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- // are permitted provided that the following conditions are met:
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- // * Redistribution's of source code must retain the above copyright notice,
- // this list of conditions and the following disclaimer.
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- #include <fstream>
- #include <string>
- #include "opencv2/opencv_modules.hpp"
- #include "opencv2/highgui/highgui.hpp"
- #include "opencv2/stitching/detail/autocalib.hpp"
- #include "opencv2/stitching/detail/blenders.hpp"
- #include "opencv2/stitching/detail/camera.hpp"
- #include "opencv2/stitching/detail/exposure_compensate.hpp"
- #include "opencv2/stitching/detail/matchers.hpp"
- #include "opencv2/stitching/detail/motion_estimators.hpp"
- #include "opencv2/stitching/detail/seam_finders.hpp"
- #include "opencv2/stitching/detail/util.hpp"
- #include "opencv2/stitching/detail/warpers.hpp"
- #include "opencv2/stitching/warpers.hpp"
- using namespace std;
- using namespace cv;
- using namespace cv::detail;
- void printUsage()
- {
- cout <<
- "Rotation model images stitcher.\n\n"
- "stitching_detailed img1 img2 [...imgN] [flags]\n\n"
- "Flags:\n"
- " --preview\n"
- " Run stitching in the preview mode. Works faster than usual mode,\n"
- " but output image will have lower resolution.\n"
- " --try_gpu (yes|no)\n"
- " Try to use GPU. The default value is 'no'. All default values\n"
- " are for CPU mode.\n"
- "\nMotion Estimation Flags:\n"
- " --work_megapix <float>\n"
- " Resolution for image registration step. The default is 0.6 Mpx.\n"
- " --features (surf|orb)\n"
- " Type of features used for images matching. The default is surf.\n"
- " --match_conf <float>\n"
- " Confidence for feature matching step. The default is 0.65 for surf and 0.3 for orb.\n"
- " --conf_thresh <float>\n"
- " Threshold for two images are from the same panorama confidence.\n"
- " The default is 1.0.\n"
- " --ba (reproj|ray)\n"
- " Bundle adjustment cost function. The default is ray.\n"
- " --ba_refine_mask (mask)\n"
- " Set refinement mask for bundle adjustment. It looks like 'x_xxx',\n"
- " where 'x' means refine respective parameter and '_' means don't\n"
- " refine one, and has the following format:\n"
- " <fx><skew><ppx><aspect><ppy>. The default mask is 'xxxxx'. If bundle\n"
- " adjustment doesn't support estimation of selected parameter then\n"
- " the respective flag is ignored.\n"
- " --wave_correct (no|horiz|vert)\n"
- " Perform wave effect correction. The default is 'horiz'.\n"
- " --save_graph <file_name>\n"
- " Save matches graph represented in DOT language to <file_name> file.\n"
- " Labels description: Nm is number of matches, Ni is number of inliers,\n"
- " C is confidence.\n"
- "\nCompositing Flags:\n"
- " --warp (plane|cylindrical|spherical|fisheye|stereographic|compressedPlaneA2B1|compressedPlaneA1.5B1|compressedPlanePortraitA2B1|compressedPlanePortraitA1.5B1|paniniA2B1|paniniA1.5B1|paniniPortraitA2B1|paniniPortraitA1.5B1|mercator|transverseMercator)\n"
- " Warp surface type. The default is 'spherical'.\n"
- " --seam_megapix <float>\n"
- " Resolution for seam estimation step. The default is 0.1 Mpx.\n"
- " --seam (no|voronoi|gc_color|gc_colorgrad)\n"
- " Seam estimation method. The default is 'gc_color'.\n"
- " --compose_megapix <float>\n"
- " Resolution for compositing step. Use -1 for original resolution.\n"
- " The default is -1.\n"
- " --expos_comp (no|gain|gain_blocks)\n"
- " Exposure compensation method. The default is 'gain_blocks'.\n"
- " --blend (no|feather|multiband)\n"
- " Blending method. The default is 'multiband'.\n"
- " --blend_strength <float>\n"
- " Blending strength from [0,100] range. The default is 5.\n"
- " --output <result_img>\n"
- " The default is 'result.jpg'.\n";
- }
- // Default command line args
- vector<string> img_names;
- bool preview = false;
- bool try_gpu = false;
- double work_megapix = 0.6;
- double seam_megapix = 0.1;
- double compose_megapix = -1;
- float conf_thresh = 1.f;
- string features = "surf";
- string ba_cost_func = "ray";
- string ba_refine_mask = "xxxxx";
- bool do_wave_correct = true;
- WaveCorrectKind wave_correct = detail::WAVE_CORRECT_HORIZ;
- bool save_graph = false;
- std::string save_graph_to;
- string warp_type = "spherical";
- int expos_comp_type = ExposureCompensator::GAIN_BLOCKS;
- float match_conf = 0.3f;
- string seam_find_type = "gc_color";
- int blend_type = Blender::MULTI_BAND;
- float blend_strength = 5;
- string result_name = "result.jpg";
- int parseCmdArgs(int argc, char** argv)
- {
- if (argc == 1)
- {
- printUsage();
- return -1;
- }
- for (int i = 1; i < argc; ++i)
- {
- if (string(argv[i]) == "--help" || string(argv[i]) == "/?")
- {
- printUsage();
- return -1;
- }
- else if (string(argv[i]) == "--preview")
- {
- preview = true;
- }
- else if (string(argv[i]) == "--try_gpu")
- {
- if (string(argv[i + 1]) == "no")
- try_gpu = false;
- else if (string(argv[i + 1]) == "yes")
- try_gpu = true;
- else
- {
- cout << "Bad --try_gpu flag value\n";
- return -1;
- }
- i++;
- }
- else if (string(argv[i]) == "--work_megapix")
- {
- work_megapix = atof(argv[i + 1]);
- i++;
- }
- else if (string(argv[i]) == "--seam_megapix")
- {
- seam_megapix = atof(argv[i + 1]);
- i++;
- }
- else if (string(argv[i]) == "--compose_megapix")
- {
- compose_megapix = atof(argv[i + 1]);
- i++;
- }
- else if (string(argv[i]) == "--result")
- {
- result_name = argv[i + 1];
- i++;
- }
- else if (string(argv[i]) == "--features")
- {
- features = argv[i + 1];
- if (features == "orb")
- match_conf = 0.3f;
- i++;
- }
- else if (string(argv[i]) == "--match_conf")
- {
- match_conf = static_cast<float>(atof(argv[i + 1]));
- i++;
- }
- else if (string(argv[i]) == "--conf_thresh")
- {
- conf_thresh = static_cast<float>(atof(argv[i + 1]));
- i++;
- }
- else if (string(argv[i]) == "--ba")
- {
- ba_cost_func = argv[i + 1];
- i++;
- }
- else if (string(argv[i]) == "--ba_refine_mask")
- {
- ba_refine_mask = argv[i + 1];
- if (ba_refine_mask.size() != 5)
- {
- cout << "Incorrect refinement mask length.\n";
- return -1;
- }
- i++;
- }
- else if (string(argv[i]) == "--wave_correct")
- {
- if (string(argv[i + 1]) == "no")
- do_wave_correct = false;
- else if (string(argv[i + 1]) == "horiz")
- {
- do_wave_correct = true;
- wave_correct = detail::WAVE_CORRECT_HORIZ;
- }
- else if (string(argv[i + 1]) == "vert")
- {
- do_wave_correct = true;
- wave_correct = detail::WAVE_CORRECT_VERT;
- }
- else
- {
- cout << "Bad --wave_correct flag value\n";
- return -1;
- }
- i++;
- }
- else if (string(argv[i]) == "--save_graph")
- {
- save_graph = true;
- save_graph_to = argv[i + 1];
- i++;
- }
- else if (string(argv[i]) == "--warp")
- {
- warp_type = string(argv[i + 1]);
- i++;
- }
- else if (string(argv[i]) == "--expos_comp")
- {
- if (string(argv[i + 1]) == "no")
- expos_comp_type = ExposureCompensator::NO;
- else if (string(argv[i + 1]) == "gain")
- expos_comp_type = ExposureCompensator::GAIN;
- else if (string(argv[i + 1]) == "gain_blocks")
- expos_comp_type = ExposureCompensator::GAIN_BLOCKS;
- else
- {
- cout << "Bad exposure compensation method\n";
- return -1;
- }
- i++;
- }
- else if (string(argv[i]) == "--seam")
- {
- if (string(argv[i + 1]) == "no" ||
- string(argv[i + 1]) == "voronoi" ||
- string(argv[i + 1]) == "gc_color" ||
- string(argv[i + 1]) == "gc_colorgrad")
- seam_find_type = argv[i + 1];
- else
- {
- cout << "Bad seam finding method\n";
- return -1;
- }
- i++;
- }
- else if (string(argv[i]) == "--blend")
- {
- if (string(argv[i + 1]) == "no")
- blend_type = Blender::NO;
- else if (string(argv[i + 1]) == "feather")
- blend_type = Blender::FEATHER;
- else if (string(argv[i + 1]) == "multiband")
- blend_type = Blender::MULTI_BAND;
- else
- {
- cout << "Bad blending method\n";
- return -1;
- }
- i++;
- }
- else if (string(argv[i]) == "--blend_strength")
- {
- blend_strength = static_cast<float>(atof(argv[i + 1]));
- i++;
- }
- else if (string(argv[i]) == "--output")
- {
- result_name = argv[i + 1];
- i++;
- }
- else
- img_names.push_back(argv[i]);
- }
- if (preview)
- {
- compose_megapix = 0.6;
- }
- return 0;
- }
- int main(int argc, char* argv[])
- {
- int64 app_start_time = getTickCount();
- cv::setBreakOnError(true);
- int retval = parseCmdArgs(argc, argv);
- if (retval)
- return retval;
- // Check if have enough images
- int num_images = static_cast<int>(img_names.size());
- if (num_images < 2)
- {
- LOGLN("Need more images");
- return -1;
- }
- double work_scale = 1, seam_scale = 1, compose_scale = 1;
- bool is_work_scale_set = false, is_seam_scale_set = false, is_compose_scale_set = false;
- LOGLN("Finding features...");
- int64 t = getTickCount();
- Ptr<FeaturesFinder> finder;
- if (features == "surf")
- {
- #ifdef HAVE_OPENCV_GPU
- if (try_gpu && gpu::getCudaEnabledDeviceCount() > 0)
- finder = new SurfFeaturesFinderGpu();
- else
- #endif
- finder = new SurfFeaturesFinder();
- }
- else if (features == "orb")
- {
- finder = new OrbFeaturesFinder();
- }
- else
- {
- cout << "Unknown 2D features type: '" << features << "'.\n";
- return -1;
- }
- Mat full_img, img;
- vector<ImageFeatures> features(num_images);
- vector<Mat> images(num_images);
- vector<Size> full_img_sizes(num_images);
- double seam_work_aspect = 1;
- for (int i = 0; i < num_images; ++i)
- {
- full_img = imread(img_names[i]);
- full_img_sizes[i] = full_img.size();
- if (full_img.empty())
- {
- LOGLN("Can't open image " << img_names[i]);
- return -1;
- }
- if (work_megapix < 0)
- {
- img = full_img;
- work_scale = 1;
- is_work_scale_set = true;
- }
- else
- {
- if (!is_work_scale_set)
- {
- work_scale = min(1.0, sqrt(work_megapix * 1e6 / full_img.size().area()));
- is_work_scale_set = true;
- }
- resize(full_img, img, Size(), work_scale, work_scale);
- }
- if (!is_seam_scale_set)
- {
- seam_scale = min(1.0, sqrt(seam_megapix * 1e6 / full_img.size().area()));
- seam_work_aspect = seam_scale / work_scale;
- is_seam_scale_set = true;
- }
- (*finder)(img, features[i]);
- features[i].img_idx = i;
- LOGLN("Features in image #" << i+1 << ": " << features[i].keypoints.size());
- resize(full_img, img, Size(), seam_scale, seam_scale);
- images[i] = img.clone();
- }
- finder->collectGarbage();
- full_img.release();
- img.release();
- LOGLN("Finding features, time: " << ((getTickCount() - t) / getTickFrequency()) << " sec");
- LOG("Pairwise matching");
- t = getTickCount();
- vector<MatchesInfo> pairwise_matches;
- BestOf2NearestMatcher matcher(try_gpu, match_conf);
- matcher(features, pairwise_matches);
- matcher.collectGarbage();
- LOGLN("Pairwise matching, time: " << ((getTickCount() - t) / getTickFrequency()) << " sec");
- // Check if we should save matches graph
- if (save_graph)
- {
- LOGLN("Saving matches graph...");
- ofstream f(save_graph_to.c_str());
- f << matchesGraphAsString(img_names, pairwise_matches, conf_thresh);
- }
- // Leave only images we are sure are from the same panorama
- vector<int> indices = leaveBiggestComponent(features, pairwise_matches, conf_thresh);
- vector<Mat> img_subset;
- vector<string> img_names_subset;
- vector<Size> full_img_sizes_subset;
- for (size_t i = 0; i < indices.size(); ++i)
- {
- img_names_subset.push_back(img_names[indices[i]]);
- img_subset.push_back(images[indices[i]]);
- full_img_sizes_subset.push_back(full_img_sizes[indices[i]]);
- }
- images = img_subset;
- img_names = img_names_subset;
- full_img_sizes = full_img_sizes_subset;
- // Check if we still have enough images
- num_images = static_cast<int>(img_names.size());
- if (num_images < 2)
- {
- LOGLN("Need more images");
- return -1;
- }
- HomographyBasedEstimator estimator;
- vector<CameraParams> cameras;
- estimator(features, pairwise_matches, cameras);
- for (size_t i = 0; i < cameras.size(); ++i)
- {
- Mat R;
- cameras[i].R.convertTo(R, CV_32F);
- cameras[i].R = R;
- LOGLN("Initial intrinsics #" << indices[i]+1 << ":\n" << cameras[i].K());
- }
- Ptr<detail::BundleAdjusterBase> adjuster;
- if (ba_cost_func == "reproj") adjuster = new detail::BundleAdjusterReproj();
- else if (ba_cost_func == "ray") adjuster = new detail::BundleAdjusterRay();
- else
- {
- cout << "Unknown bundle adjustment cost function: '" << ba_cost_func << "'.\n";
- return -1;
- }
- adjuster->setConfThresh(conf_thresh);
- Mat_<uchar> refine_mask = Mat::zeros(3, 3, CV_8U);
- if (ba_refine_mask[0] == 'x') refine_mask(0,0) = 1;
- if (ba_refine_mask[1] == 'x') refine_mask(0,1) = 1;
- if (ba_refine_mask[2] == 'x') refine_mask(0,2) = 1;
- if (ba_refine_mask[3] == 'x') refine_mask(1,1) = 1;
- if (ba_refine_mask[4] == 'x') refine_mask(1,2) = 1;
- adjuster->setRefinementMask(refine_mask);
- (*adjuster)(features, pairwise_matches, cameras);
- // Find median focal length
- vector<double> focals;
- for (size_t i = 0; i < cameras.size(); ++i)
- {
- LOGLN("Camera #" << indices[i]+1 << ":\n" << cameras[i].K());
- focals.push_back(cameras[i].focal);
- }
- sort(focals.begin(), focals.end());
- float warped_image_scale;
- if (focals.size() % 2 == 1)
- warped_image_scale = static_cast<float>(focals[focals.size() / 2]);
- else
- warped_image_scale = static_cast<float>(focals[focals.size() / 2 - 1] + focals[focals.size() / 2]) * 0.5f;
- if (do_wave_correct)
- {
- vector<Mat> rmats;
- for (size_t i = 0; i < cameras.size(); ++i)
- rmats.push_back(cameras[i].R);
- waveCorrect(rmats, wave_correct);
- for (size_t i = 0; i < cameras.size(); ++i)
- cameras[i].R = rmats[i];
- }
- LOGLN("Warping images (auxiliary)... ");
- t = getTickCount();
- vector<Point> corners(num_images);
- vector<Mat> masks_warped(num_images);
- vector<Mat> images_warped(num_images);
- vector<Size> sizes(num_images);
- vector<Mat> masks(num_images);
- // Preapre images masks
- for (int i = 0; i < num_images; ++i)
- {
- masks[i].create(images[i].size(), CV_8U);
- masks[i].setTo(Scalar::all(255));
- }
- // Warp images and their masks
- Ptr<WarperCreator> warper_creator;
- #ifdef HAVE_OPENCV_GPU
- if (try_gpu && gpu::getCudaEnabledDeviceCount() > 0)
- {
- if (warp_type == "plane") warper_creator = new cv::PlaneWarperGpu();
- else if (warp_type == "cylindrical") warper_creator = new cv::CylindricalWarperGpu();
- else if (warp_type == "spherical") warper_creator = new cv::SphericalWarperGpu();
- }
- else
- #endif
- {
- if (warp_type == "plane") warper_creator = new cv::PlaneWarper();
- else if (warp_type == "cylindrical") warper_creator = new cv::CylindricalWarper();
- else if (warp_type == "spherical") warper_creator = new cv::SphericalWarper();
- else if (warp_type == "fisheye") warper_creator = new cv::FisheyeWarper();
- else if (warp_type == "stereographic") warper_creator = new cv::StereographicWarper();
- else if (warp_type == "compressedPlaneA2B1") warper_creator = new cv::CompressedRectilinearWarper(2, 1);
- else if (warp_type == "compressedPlaneA1.5B1") warper_creator = new cv::CompressedRectilinearWarper(1.5, 1);
- else if (warp_type == "compressedPlanePortraitA2B1") warper_creator = new cv::CompressedRectilinearPortraitWarper(2, 1);
- else if (warp_type == "compressedPlanePortraitA1.5B1") warper_creator = new cv::CompressedRectilinearPortraitWarper(1.5, 1);
- else if (warp_type == "paniniA2B1") warper_creator = new cv::PaniniWarper(2, 1);
- else if (warp_type == "paniniA1.5B1") warper_creator = new cv::PaniniWarper(1.5, 1);
- else if (warp_type == "paniniPortraitA2B1") warper_creator = new cv::PaniniPortraitWarper(2, 1);
- else if (warp_type == "paniniPortraitA1.5B1") warper_creator = new cv::PaniniPortraitWarper(1.5, 1);
- else if (warp_type == "mercator") warper_creator = new cv::MercatorWarper();
- else if (warp_type == "transverseMercator") warper_creator = new cv::TransverseMercatorWarper();
- }
- if (warper_creator.empty())
- {
- cout << "Can't create the following warper '" << warp_type << "'\n";
- return 1;
- }
-
- Ptr<RotationWarper> warper = warper_creator->create(static_cast<float>(warped_image_scale * seam_work_aspect));
- for (int i = 0; i < num_images; ++i)
- {
- Mat_<float> K;
- cameras[i].K().convertTo(K, CV_32F);
- float swa = (float)seam_work_aspect;
- K(0,0) *= swa; K(0,2) *= swa;
- K(1,1) *= swa; K(1,2) *= swa;
- corners[i] = warper->warp(images[i], K, cameras[i].R, INTER_LINEAR, BORDER_REFLECT, images_warped[i]);
- sizes[i] = images_warped[i].size();
- warper->warp(masks[i], K, cameras[i].R, INTER_NEAREST, BORDER_CONSTANT, masks_warped[i]);
- }
- vector<Mat> images_warped_f(num_images);
- for (int i = 0; i < num_images; ++i)
- images_warped[i].convertTo(images_warped_f[i], CV_32F);
- LOGLN("Warping images, time: " << ((getTickCount() - t) / getTickFrequency()) << " sec");
- Ptr<ExposureCompensator> compensator = ExposureCompensator::createDefault(expos_comp_type);
- compensator->feed(corners, images_warped, masks_warped);
- Ptr<SeamFinder> seam_finder;
- if (seam_find_type == "no")
- seam_finder = new detail::NoSeamFinder();
- else if (seam_find_type == "voronoi")
- seam_finder = new detail::VoronoiSeamFinder();
- else if (seam_find_type == "gc_color")
- {
- #ifdef HAVE_OPENCV_GPU
- if (try_gpu && gpu::getCudaEnabledDeviceCount() > 0)
- seam_finder = new detail::GraphCutSeamFinderGpu(GraphCutSeamFinderBase::COST_COLOR);
- else
- #endif
- seam_finder = new detail::GraphCutSeamFinder(GraphCutSeamFinderBase::COST_COLOR);
- }
- else if (seam_find_type == "gc_colorgrad")
- {
- #ifdef HAVE_OPENCV_GPU
- if (try_gpu && gpu::getCudaEnabledDeviceCount() > 0)
- seam_finder = new detail::GraphCutSeamFinderGpu(GraphCutSeamFinderBase::COST_COLOR_GRAD);
- else
- #endif
- seam_finder = new detail::GraphCutSeamFinder(GraphCutSeamFinderBase::COST_COLOR_GRAD);
- }
- if (seam_finder.empty())
- {
- cout << "Can't create the following seam finder '" << seam_find_type << "'\n";
- return 1;
- }
- seam_finder->find(images_warped_f, corners, masks_warped);
- // Release unused memory
- images.clear();
- images_warped.clear();
- images_warped_f.clear();
- masks.clear();
- LOGLN("Compositing...");
- t = getTickCount();
- Mat img_warped, img_warped_s;
- Mat dilated_mask, seam_mask, mask, mask_warped;
- Ptr<Blender> blender;
- double compose_seam_aspect = 1;
- double compose_work_aspect = 1;
- for (int img_idx = 0; img_idx < num_images; ++img_idx)
- {
- LOGLN("Compositing image #" << indices[img_idx]+1);
- // Read image and resize it if necessary
- full_img = imread(img_names[img_idx]);
- if (!is_compose_scale_set)
- {
- if (compose_megapix > 0)
- compose_scale = min(1.0, sqrt(compose_megapix * 1e6 / full_img.size().area()));
- is_compose_scale_set = true;
- // Compute relative scales
- compose_seam_aspect = compose_scale / seam_scale;
- compose_work_aspect = compose_scale / work_scale;
- // Update warped image scale
- warped_image_scale *= static_cast<float>(compose_work_aspect);
- warper = warper_creator->create(warped_image_scale);
- // Update corners and sizes
- for (int i = 0; i < num_images; ++i)
- {
- // Update intrinsics
- cameras[i].focal *= compose_work_aspect;
- cameras[i].ppx *= compose_work_aspect;
- cameras[i].ppy *= compose_work_aspect;
- // Update corner and size
- Size sz = full_img_sizes[i];
- if (std::abs(compose_scale - 1) > 1e-1)
- {
- sz.width = cvRound(full_img_sizes[i].width * compose_scale);
- sz.height = cvRound(full_img_sizes[i].height * compose_scale);
- }
- Mat K;
- cameras[i].K().convertTo(K, CV_32F);
- Rect roi = warper->warpRoi(sz, K, cameras[i].R);
- corners[i] = roi.tl();
- sizes[i] = roi.size();
- }
- }
- if (abs(compose_scale - 1) > 1e-1)
- resize(full_img, img, Size(), compose_scale, compose_scale);
- else
- img = full_img;
- full_img.release();
- Size img_size = img.size();
- Mat K;
- cameras[img_idx].K().convertTo(K, CV_32F);
- // Warp the current image
- warper->warp(img, K, cameras[img_idx].R, INTER_LINEAR, BORDER_REFLECT, img_warped);
- // Warp the current image mask
- mask.create(img_size, CV_8U);
- mask.setTo(Scalar::all(255));
- warper->warp(mask, K, cameras[img_idx].R, INTER_NEAREST, BORDER_CONSTANT, mask_warped);
- // Compensate exposure
- compensator->apply(img_idx, corners[img_idx], img_warped, mask_warped);
- img_warped.convertTo(img_warped_s, CV_16S);
- img_warped.release();
- img.release();
- mask.release();
- dilate(masks_warped[img_idx], dilated_mask, Mat());
- resize(dilated_mask, seam_mask, mask_warped.size());
- mask_warped = seam_mask & mask_warped;
- if (blender.empty())
- {
- blender = Blender::createDefault(blend_type, try_gpu);
- Size dst_sz = resultRoi(corners, sizes).size();
- float blend_width = sqrt(static_cast<float>(dst_sz.area())) * blend_strength / 100.f;
- if (blend_width < 1.f)
- blender = Blender::createDefault(Blender::NO, try_gpu);
- else if (blend_type == Blender::MULTI_BAND)
- {
- MultiBandBlender* mb = dynamic_cast<MultiBandBlender*>(static_cast<Blender*>(blender));
- mb->setNumBands(static_cast<int>(ceil(log(blend_width)/log(2.)) - 1.));
- LOGLN("Multi-band blender, number of bands: " << mb->numBands());
- }
- else if (blend_type == Blender::FEATHER)
- {
- FeatherBlender* fb = dynamic_cast<FeatherBlender*>(static_cast<Blender*>(blender));
- fb->setSharpness(1.f/blend_width);
- LOGLN("Feather blender, sharpness: " << fb->sharpness());
- }
- blender->prepare(corners, sizes);
- }
- // Blend the current image
- blender->feed(img_warped_s, mask_warped, corners[img_idx]);
- }
- Mat result, result_mask;
- blender->blend(result, result_mask);
- LOGLN("Compositing, time: " << ((getTickCount() - t) / getTickFrequency()) << " sec");
- imwrite(result_name, result);
- LOGLN("Finished, total time: " << ((getTickCount() - app_start_time) / getTickFrequency()) << " sec");
- return 0;
- }