calibrator.py 文件源码

def image_from_archive(archive, name):
    """
    Load image PGM file from tar archive. 

    Used for tarfile loading and unit test.
    """
    member = archive.getmember(name)
    imagefiledata = numpy.fromstring(archive.extractfile(member).read(-1), numpy.uint8)
    imagefiledata.resize((1, imagefiledata.size))
    return cv2.imdecode(imagefiledata, cv2.IMREAD_COLOR)