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devcarmelodevcarmelo
committedFeb 12, 2017
OpenCV creación de imágenes HDR
Creación de imágenes HDR con OpenCV y aplicación de Mapeo Tonal para obtener una imagen LDR.
1 parent cfb68e8 commit 96ddeda

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‎opencv-hdr/CMakeLists.txt

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cmake_minimum_required(VERSION 3.4)
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project( Tutorial_OpenCV_HDR )
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find_package( OpenCV 3.0.0 REQUIRED )
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add_definitions(-D_CRT_SECURE_NO_WARNINGS)
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file(COPY exposures DESTINATION data)
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add_executable( ${PROJECT_NAME} source.cpp)
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target_link_libraries( ${PROJECT_NAME} ${OpenCV_LIBS} )

‎opencv-hdr/exposures/list.txt

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memorial00.png 0.03125
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memorial01.png 0.0625
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memorial02.png 0.125
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memorial03.png 0.25
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memorial04.png 0.5
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memorial05.png 1
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memorial06.png 2
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memorial07.png 4
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memorial08.png 8
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memorial09.png 16
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memorial10.png 32
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memorial11.png 64
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memorial12.png 128
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memorial13.png 256
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memorial14.png 512
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memorial15.png 1024

‎opencv-hdr/exposures/memorial00.png

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‎opencv-hdr/exposures/memorial01.png

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‎opencv-hdr/exposures/memorial02.png

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‎opencv-hdr/exposures/memorial03.png

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‎opencv-hdr/exposures/memorial04.png

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‎opencv-hdr/exposures/memorial05.png

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‎opencv-hdr/exposures/memorial06.png

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‎opencv-hdr/exposures/memorial07.png

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‎opencv-hdr/exposures/memorial08.png

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‎opencv-hdr/exposures/memorial09.png

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‎opencv-hdr/exposures/memorial10.png

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‎opencv-hdr/exposures/memorial11.png

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‎opencv-hdr/exposures/memorial12.png

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‎opencv-hdr/exposures/memorial13.png

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‎opencv-hdr/exposures/memorial14.png

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‎opencv-hdr/exposures/memorial15.png

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‎opencv-hdr/exposures/readme.txt

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Images by Paul Debevec
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http://www.pauldebevec.com/Research/HDR/

‎opencv-hdr/exposures/response.csv

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‎opencv-hdr/source.cpp

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#include <opencv2/photo.hpp>
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#include <opencv2/imgcodecs.hpp>
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#include <opencv2/highgui.hpp>
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#include <vector>
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#include <iostream>
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#include <fstream>
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using namespace cv;
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using namespace std;
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void loadExposureSeq(String, vector<Mat>&, vector<float>&);
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int main(int, char**argv)
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{
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vector<Mat> images;
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vector<float> times;
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loadExposureSeq("data/exposures", images, times);
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//--------------- Image HDR -----------------------//
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Mat response;
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Ptr<CalibrateDebevec> calibrate = createCalibrateDebevec();
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calibrate->process(images, response, times);
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Mat hdr;
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Ptr<MergeDebevec> merge_debevec = createMergeDebevec();
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merge_debevec->process(images, hdr, times, response);
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imwrite("memorial-hdr.hdr", hdr);
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//--------------- Tone Mapping -----------------------//
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Mat ldr;
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Ptr<TonemapDurand> tonemap = createTonemapDurand(2.2f);
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tonemap->process(hdr, ldr);
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imwrite("memorial-ldr.png", ldr * 255);
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//--------------- Exposure fusion -----------------------//
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Mat fusion;
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Ptr<MergeMertens> merge_mertens = createMergeMertens();
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merge_mertens->process(images, fusion);
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imshow("fusion", fusion);
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imwrite("fusion-ldr.png", fusion * 255);
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cout << "HDR creado correctamente." << endl;
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cout << "Presione una tecla para continuar..." << endl;
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waitKey();
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return 0;
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}
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void loadExposureSeq(String path, vector<Mat>& images, vector<float>& times)
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{
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path = path + std::string("/");
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ifstream list_file((path + "list.txt").c_str());
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string name;
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float val;
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while (list_file >> name >> val) {
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Mat img = imread(path + name);
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images.push_back(img);
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times.push_back(1 / val);
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}
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list_file.close();
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}

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