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T4
# 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 | |