cpp在图片中写入exif信息 示例

代码如下：

#include <iostream>
#include <fstream>
#include <exiv2/exiv2.hpp>

int main(int argc, char** argv) {
    if (argc != 3) {
        std::cerr << "Usage: " << argv[0] << " image_file exif_file" << std::endl;
        return 1;
    }

    try {
        Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(argv[1]);
        image->readMetadata();

        Exiv2::ExifData exifData;
        std::ifstream exifFile(argv[2]);
        exifFile >> exifData;
        image->setExifData(exifData);
        image->writeMetadata();
    } catch (const std::exception& e) {
        std::cerr << "Error: " << e.what() << std::endl;
        return 1;
    }

    return 0;
}

这段代码可以将指定图片中的exif信息替换为指定的exif文件中的信息。