    int MrwImage::pixelHeight() const
    {
        ExifData::const_iterator imageHeight = exifData_.findKey(Exiv2::ExifKey("Exif.Image.ImageLength"));
        if (imageHeight != exifData_.end() && imageHeight->count() > 0) {
            return imageHeight->toLong();
        }
        return 0;
    }
Unknown