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# Copyright (c) OpenMMLab. All rights reserved. | |
def is_3dlist(x): | |
"""check x is 3d-list([[[1], []]]) or 2d empty list([[], []]) or 1d empty | |
list([]). | |
Notice: | |
The reason that it contains 1d or 2d empty list is because | |
some arguments from gt annotation file or model prediction | |
may be empty, but usually, it should be 3d-list. | |
""" | |
if not isinstance(x, list): | |
return False | |
if len(x) == 0: | |
return True | |
for sub_x in x: | |
if not is_2dlist(sub_x): | |
return False | |
return True | |
def is_2dlist(x): | |
"""check x is 2d-list([[1], []]) or 1d empty list([]). | |
Notice: | |
The reason that it contains 1d empty list is because | |
some arguments from gt annotation file or model prediction | |
may be empty, but usually, it should be 2d-list. | |
""" | |
if not isinstance(x, list): | |
return False | |
if len(x) == 0: | |
return True | |
return all(isinstance(item, list) for item in x) | |
def is_type_list(x, type): | |
if not isinstance(x, list): | |
return False | |
return all(isinstance(item, type) for item in x) | |
def is_none_or_type(x, type): | |
return isinstance(x, type) or x is None | |
def equal_len(*argv): | |
assert len(argv) > 0 | |
num_arg = len(argv[0]) | |
for arg in argv: | |
if len(arg) != num_arg: | |
return False | |
return True | |
def valid_boundary(x, with_score=True): | |
num = len(x) | |
if num < 8: | |
return False | |
if num % 2 == 0 and (not with_score): | |
return True | |
if num % 2 == 1 and with_score: | |
return True | |
return False | |