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