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# ------------------------------------------------------------------------
# Copyright (c) 2022 megvii-research. All Rights Reserved.
# ------------------------------------------------------------------------
# Modified from Deformable DETR (https://github.com/fundamentalvision/Deformable-DETR)
# Copyright (c) 2020 SenseTime. All Rights Reserved.
# ------------------------------------------------------------------------
# Modified from DETR (https://github.com/facebookresearch/detr)
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
# ------------------------------------------------------------------------
import json
import os
import util.misc as utils
try:
from panopticapi.evaluation import pq_compute
except ImportError:
pass
class PanopticEvaluator(object):
def __init__(self, ann_file, ann_folder, output_dir="panoptic_eval"):
self.gt_json = ann_file
self.gt_folder = ann_folder
if utils.is_main_process():
if not os.path.exists(output_dir):
os.mkdir(output_dir)
self.output_dir = output_dir
self.predictions = []
def update(self, predictions):
for p in predictions:
with open(os.path.join(self.output_dir, p["file_name"]), "wb") as f:
f.write(p.pop("png_string"))
self.predictions += predictions
def synchronize_between_processes(self):
all_predictions = utils.all_gather(self.predictions)
merged_predictions = []
for p in all_predictions:
merged_predictions += p
self.predictions = merged_predictions
def summarize(self):
if utils.is_main_process():
json_data = {"annotations": self.predictions}
predictions_json = os.path.join(self.output_dir, "predictions.json")
with open(predictions_json, "w") as f:
f.write(json.dumps(json_data))
return pq_compute(self.gt_json, predictions_json, gt_folder=self.gt_folder, pred_folder=self.output_dir)
return None
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