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prepare_voc_sem_seg.py
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prepare_voc_sem_seg.py
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import argparse
import os
import os.path as osp
import shutil
from functools import partial
from glob import glob
import mmcv
import numpy as np
from PIL import Image
full_clsID_to_trID = {
0: 255,
1: 0,
2: 1,
3: 2,
4: 3,
5: 4,
6: 5,
7: 6,
8: 7,
9: 8,
10: 9,
11: 10,
12: 11,
13: 12,
14: 13,
15: 14,
16: 15,
17: 16,
18: 17,
19: 18,
20: 19,
255: 255,
}
# 2-cow/motobike, 4-airplane/sofa, 6-cat/tv, 8-train/bottle, 10-
# chair/potted plant
# "aeroplane",
# "bicycle",
# "bird",
# "boat",
# "bottle",
# "bus",
# "car",
# "cat",
# "chair",
# "cow",
# "diningtable",
# "dog",
# "horse",
# "motorbike",
# "person",
# "pottedplant",
# "sheep",
# "sofa",
# "train",
# "tv",
novel_clsID = [16, 17, 18, 19, 20]
novel_2_clsID = [10, 14]
novel_4_clsID = [1, 10, 14, 18]
novel_6_clsID = [1, 8, 10, 14, 18, 20]
novel_8_clsID = [1, 5, 8, 10, 14, 18, 19, 20]
novel_10_clsID = [1, 5, 8, 9, 10, 14, 16, 18, 19, 20]
base_clsID = [k for k in full_clsID_to_trID.keys() if k not in novel_clsID + [0, 255]]
base_2_clsID = [k for k in base_clsID if k not in novel_2_clsID]
base_4_clsID = [k for k in base_clsID if k not in novel_4_clsID]
base_6_clsID = [k for k in base_clsID if k not in novel_6_clsID]
base_8_clsID = [k for k in base_clsID if k not in novel_8_clsID]
base_10_clsID = [k for k in base_clsID if k not in novel_10_clsID]
novel_clsID_to_trID = {k: i for i, k in enumerate(novel_clsID)}
base_clsID_to_trID = {k: i for i, k in enumerate(base_clsID)}
base_2_clsID_to_trID = {k: i for i, k in enumerate(base_2_clsID)}
base_4_clsID_to_trID = {k: i for i, k in enumerate(base_4_clsID)}
base_6_clsID_to_trID = {k: i for i, k in enumerate(base_6_clsID)}
base_8_clsID_to_trID = {k: i for i, k in enumerate(base_8_clsID)}
base_10_clsID_to_trID = {k: i for i, k in enumerate(base_10_clsID)}
def convert_to_trainID(
maskpath, out_mask_dir, is_train, clsID_to_trID=full_clsID_to_trID, suffix=""
):
mask = np.array(Image.open(maskpath))
mask_copy = np.ones_like(mask, dtype=np.uint8) * 255
for clsID, trID in clsID_to_trID.items():
mask_copy[mask == clsID] = trID
seg_filename = (
osp.join(out_mask_dir, "train" + suffix, osp.basename(maskpath))
if is_train
else osp.join(out_mask_dir, "val" + suffix, osp.basename(maskpath))
)
if len(np.unique(mask_copy)) == 1 and np.unique(mask_copy)[0] == 255:
return
Image.fromarray(mask_copy).save(seg_filename, "PNG")
def parse_args():
parser = argparse.ArgumentParser(
description="Convert VOC2021 annotations to mmsegmentation format"
) # noqa
parser.add_argument("voc_path", help="voc path")
parser.add_argument("-o", "--out_dir", help="output path")
parser.add_argument("--nproc", default=16, type=int, help="number of process")
args = parser.parse_args()
return args
def main():
args = parse_args()
voc_path = args.voc_path
nproc = args.nproc
print(full_clsID_to_trID)
print(base_clsID_to_trID)
print(novel_clsID_to_trID)
out_dir = args.out_dir or voc_path
# out_img_dir = osp.join(out_dir, 'images')
out_mask_dir = osp.join(out_dir, "annotations_detectron2")
out_image_dir = osp.join(out_dir, "images_detectron2")
for dir_name in [
"train",
"val",
"train_base",
"train_base_2",
"train_base_4",
"train_base_6",
"train_base_8",
"train_base_10",
"train_novel",
"val_base",
"val_novel",
]:
os.makedirs(osp.join(out_mask_dir, dir_name), exist_ok=True)
if dir_name in ["train", "val"]:
os.makedirs(osp.join(out_image_dir, dir_name), exist_ok=True)
train_list = [
osp.join(voc_path, "SegmentationClassAug", f + ".png")
for f in np.loadtxt(osp.join(voc_path, "train.txt"), dtype=np.str).tolist()
]
test_list = [
osp.join(voc_path, "SegmentationClassAug", f + ".png")
for f in np.loadtxt(osp.join(voc_path, "val.txt"), dtype=np.str).tolist()
]
if args.nproc > 1:
mmcv.track_parallel_progress(
partial(convert_to_trainID, out_mask_dir=out_mask_dir, is_train=True),
train_list,
nproc=nproc,
)
mmcv.track_parallel_progress(
partial(convert_to_trainID, out_mask_dir=out_mask_dir, is_train=False),
test_list,
nproc=nproc,
)
else:
mmcv.track_progress(
partial(convert_to_trainID, out_mask_dir=out_mask_dir, is_train=True),
train_list,
)
mmcv.track_progress(
partial(convert_to_trainID, out_mask_dir=out_mask_dir, is_train=False),
test_list,
)
print("Done!")
if __name__ == "__main__":
main()