def merge_images(input_filepath1: str='', input_filepath2: str='',
    output_filepath: str=''):
    """Combine OpenEXR multilayer images rendered with different sampleranges into one image with reduced noise 

    :param input_filepath1: Input Filepath, File path for image to merge 
    :type input_filepath1: str
    :param input_filepath2: Input Filepath, File path for image to merge 
    :type input_filepath2: str
    :param output_filepath: Output Filepath, File path for merged image 
    :type output_filepath: str
    """
    pass
