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import numpy as np
from typing import List, Tuple, Sequence, Any
FOOTBALL_KEYPOINTS: list[tuple[int, int]] = [
(0, 0), # 1
(0, 0), # 2
(0, 0), # 3
(0, 0), # 4
(0, 0), # 5
(0, 0), # 6
(0, 0), # 7
(0, 0), # 8
(0, 0), # 9
(0, 0), # 10
(0, 0), # 11
(0, 0), # 12
(0, 0), # 13
(0, 0), # 14
(527, 283), # 15
(527, 403), # 16
(0, 0), # 17
(0, 0), # 18
(0, 0), # 19
(0, 0), # 20
(0, 0), # 21
(0, 0), # 22
(0, 0), # 23
(0, 0), # 24
(0, 0), # 25
(0, 0), # 26
(0, 0), # 27
(0, 0), # 28
(0, 0), # 29
(0, 0), # 30
(405, 340), # 31
(645, 340), # 32
]
def convert_keypoints_to_val_format(keypoints):
return [tuple(int(x) for x in pair) for pair in keypoints]
def predict_failed_indices(results_frames: Sequence[Any]) -> list[int]:
max_frames = len(results_frames)
if max_frames == 0:
return []
failed_indices: list[int] = []
for frame_index, frame_result in enumerate(results_frames):
frame_keypoints = getattr(frame_result, "keypoints", []) or []
non_zero_count = sum(1 for (x, y) in frame_keypoints if int(x) != 0 and int(y) != 0)
if non_zero_count <= 4:
failed_indices.append(frame_index)
return failed_indices
def _generate_sparse_template_keypoints(frame_width: int, frame_height: int) -> list[tuple[int, int]]:
template_max_x, template_max_y = (1045, 675)
sx = float(frame_width) / float(template_max_x if template_max_x != 0 else 1)
sy = float(frame_height) / float(template_max_y if template_max_y != 0 else 1)
scaled: list[tuple[int, int]] = []
for i in range(32):
tx, ty = FOOTBALL_KEYPOINTS[i]
x_scaled = int(round(tx * sx))
y_scaled = int(round(ty * sy))
scaled.append((x_scaled, y_scaled))
return scaled
def fix_keypoints(
results_frames: Sequence[Any],
failed_indices: Sequence[int],
frame_width: int,
frame_height: int,
) -> list[Any]:
max_frames = len(results_frames)
if max_frames == 0:
return list(results_frames)
failed_set = set(int(i) for i in failed_indices)
all_indices = list(range(max_frames))
successful_indices = [i for i in all_indices if i not in failed_set]
if len(successful_indices) == 0:
sparse_template = _generate_sparse_template_keypoints(frame_width, frame_height)
for frame_result in results_frames:
setattr(frame_result, "keypoints", list(convert_keypoints_to_val_format(sparse_template)))
return list(results_frames)
seed_index = successful_indices[0]
seed_kps_raw = getattr(results_frames[seed_index], "keypoints", []) or []
last_success_kps = convert_keypoints_to_val_format(seed_kps_raw)
for frame_index in range(max_frames):
frame_result = results_frames[frame_index]
if frame_index in failed_set:
setattr(frame_result, "keypoints", list(last_success_kps))
else:
current_kps_raw = getattr(frame_result, "keypoints", []) or []
current_kps = convert_keypoints_to_val_format(current_kps_raw)
setattr(frame_result, "keypoints", list(current_kps))
last_success_kps = current_kps
return list(results_frames)
def run_keypoints_post_processing(results_frames: Sequence[Any], frame_width: int, frame_height: int) -> list[Any]:
failed_indices = predict_failed_indices(results_frames)
return fix_keypoints(results_frames, failed_indices, frame_width, frame_height) |