You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
53 lines
2.2 KiB
53 lines
2.2 KiB
# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved. |
|
# |
|
# Licensed under the Apache License, Version 2.0 (the "License"); |
|
# you may not use this file except in compliance with the License. |
|
# You may obtain a copy of the License at |
|
# |
|
# http://www.apache.org/licenses/LICENSE-2.0 |
|
# |
|
# Unless required by applicable law or agreed to in writing, software |
|
# distributed under the License is distributed on an "AS IS" BASIS, |
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
# See the License for the specific language governing permissions and |
|
# limitations under the License. |
|
|
|
import os |
|
import os.path as osp |
|
import argparse |
|
from math import ceil |
|
from PIL import Image |
|
from utils import Raster, Timer |
|
|
|
|
|
@Timer |
|
def split_data(image_path, block_size, save_folder): |
|
if not osp.exists(save_folder): |
|
os.makedirs(save_folder) |
|
image_name = image_path.replace("\\", "/").split("/")[-1].split(".")[0] |
|
raster = Raster(image_path, to_uint8=True) |
|
rows = ceil(raster.height / block_size) |
|
cols = ceil(raster.width / block_size) |
|
total_number = int(rows * cols) |
|
for r in range(rows): |
|
for c in range(cols): |
|
loc_start = (c * block_size, r * block_size) |
|
title = Image.fromarray( |
|
raster.getArray(loc_start, (block_size, block_size))) |
|
save_path = osp.join(save_folder, ( |
|
image_name + "_" + str(r) + "_" + str(c) + ".png")) |
|
title.save(save_path, "PNG") |
|
print("-- {:d}/{:d} --".format(int(r * cols + c + 1), total_number)) |
|
|
|
|
|
parser = argparse.ArgumentParser(description="input parameters") |
|
parser.add_argument("--image_path", type=str, required=True, \ |
|
help="The path of big image data.") |
|
parser.add_argument("--block_size", type=int, default=512, \ |
|
help="The size of image block, `512` is the default.") |
|
parser.add_argument("--save_folder", type=str, default="output", \ |
|
help="The folder path to save the results, `output` is the default.") |
|
|
|
if __name__ == "__main__": |
|
args = parser.parse_args() |
|
split_data(args.image_path, args.block_size, args.save_folder)
|
|
|