can‘t merge hdr image

[straywriter]

There was a problem when I used your program to synthesize these three pictures，

image：

code：

#define PIC_DISABLE_OPENGL

#include "piccante.hpp"

int main(int argc, char *argv[])
{
    printf("Adding file names to the merger... ");
    pic::HDRMerger merger;
    // merger.addFile("../data/input/stack_alignment/IMG_4209.jpg");
    // merger.addFile("../data/input/stack_alignment/IMG_4210.jpg");
    // merger.addFile("../data/input/stack_alignment/IMG_4211.jpg");
    merger.addFile("../data/input/Multi-exposure/window1.jpg");
    merger.addFile("../data/input/Multi-exposure/window2.jpg");
    merger.addFile("../data/input/Multi-exposure/window3.jpg");
    printf("Ok\n");

    merger.update(pic::CW_DEB97, pic::HRD_LOG, pic::HA_MTB, NULL);

    printf("Merging LDR images into an HDR image... ");
    pic::Image *imgOut = merger.execute(NULL);
    printf("Ok\n");

    if (imgOut != NULL)
    {
        if (imgOut->isValid())
        {
            imgOut->Write("../data/output/image_aligned.hdr");
            pic::Image *imgTmo = pic::ReinhardTMO::executeGlobal1(imgOut, NULL);
            imgTmo->Write("../data/output/image_aligned_tmo1.png", pic::LT_NOR_GAMMA);
            delete imgTmo;
            delete imgOut;
        }
    }

    return 0;
}

result：

[Francesco Banterle]

The problem is that these images do not have EXIF information, therefore the program cannot extract shutter speed, ISO value, and F-Number. In order to generate radiance maps, you need to provide this information manually if they are not present in the EXIF file. Alternatively, you may merge them using exposure fusion that creates a tone-mapped image.
Note that the third image is gray-scale and it should not be used.

[straywriter]

thank you