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""" | ||
Copyright (C) 2019 NVIDIA Corporation. All rights reserved. | ||
Licensed under the CC BY-NC-SA 4.0 license (https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode). | ||
""" | ||
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import os | ||
import argparse | ||
from pycocotools.coco import COCO | ||
import numpy as np | ||
import skimage.io as io | ||
from skimage.draw import polygon | ||
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parser = argparse.ArgumentParser() | ||
parser.add_argument('--annotation_file', type=str, default="./annotations/instances_train2017.json", | ||
help="Path to the annocation file. It can be downloaded at http://images.cocodataset.org/annotations/annotations_trainval2017.zip. Should be either instances_train2017.json or instances_val2017.json") | ||
parser.add_argument('--input_label_dir', type=str, default="./train_label/", | ||
help="Path to the directory containing label maps. It can be downloaded at http://calvin.inf.ed.ac.uk/wp-content/uploads/data/cocostuffdataset/stuffthingmaps_trainval2017.zip") | ||
parser.add_argument('--output_instance_dir', type=str, default="./train_inst/", | ||
help="Path to the output directory of instance maps") | ||
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opt = parser.parse_args() | ||
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print("annotation file at {}".format(opt.annotation_file)) | ||
print("input label maps at {}".format(opt.input_label_dir)) | ||
print("output dir at {}".format(opt.output_instance_dir)) | ||
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# initialize COCO api for instance annotations | ||
coco = COCO(opt.annotation_file) | ||
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# display COCO categories and supercategories | ||
cats = coco.loadCats(coco.getCatIds()) | ||
imgIds = coco.getImgIds(catIds=coco.getCatIds(cats)) | ||
for ix, id in enumerate(imgIds): | ||
if ix % 50 == 0: | ||
print("{} / {}".format(ix, len(imgIds))) | ||
img_dict = coco.loadImgs(id)[0] | ||
filename = img_dict["file_name"].replace("jpg", "png") | ||
label_name = os.path.join(opt.input_label_dir, filename) | ||
inst_name = os.path.join(opt.output_instance_dir, filename) | ||
img = io.imread(label_name, as_grey=True) | ||
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annIds = coco.getAnnIds(imgIds=id, catIds=[], iscrowd=None) | ||
anns = coco.loadAnns(annIds) | ||
count = 0 | ||
for ann in anns: | ||
if type(ann["segmentation"]) == list: | ||
if "segmentation" in ann: | ||
for seg in ann["segmentation"]: | ||
poly = np.array(seg).reshape((int(len(seg) / 2), 2)) | ||
rr, cc = polygon(poly[:, 1] - 1, poly[:, 0] - 1) | ||
img[rr, cc] = count | ||
count += 1 | ||
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io.imsave(inst_name, img) |
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