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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 os
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+import codecs
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+import argparse
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+
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+import paddlers
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+import numpy as np
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+import cv2
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+import geojson
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+from tqdm import tqdm
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+
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+from utils import Raster, save_geotiff, translate_vector, time_it
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+
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+
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+def _gt_convert(x_geo, y_geo, geotf):
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+ a = np.array([[geotf[1], geotf[2]], [geotf[4], geotf[5]]])
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+ b = np.array([x_geo - geotf[0], y_geo - geotf[3]])
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+ return np.round(np.linalg.solve(a,
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+ b)).tolist() # Solve a quadratic equation
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+
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+
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+@time_it
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+# TODO: update for vector2raster
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+def convert_data(image_path, geojson_path, save_path):
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+ raster = Raster(image_path)
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+ tmp_img = np.zeros((raster.height, raster.width), dtype=np.int32)
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+ # vector to EPSG from raster
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+ temp_geojson_path = translate_vector(geojson_path, raster.proj)
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+ geo_reader = codecs.open(temp_geojson_path, "r", encoding="utf-8")
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+ feats = geojson.loads(geo_reader.read())["features"] # All image patches
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+ geo_reader.close()
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+ for feat in tqdm(feats):
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+ geo = feat["geometry"]
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+ if geo["type"] == "Polygon":
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+ geo_points = geo["coordinates"][0]
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+ elif geo["type"] == "MultiPolygon":
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+ geo_points = geo["coordinates"][0][0]
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+ else:
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+ raise TypeError(
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+ "Geometry type must be 'Polygon' or 'MultiPolygon', not {}.".
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+ format(geo["type"]))
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+ xy_points = np.array([
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+ _gt_convert(point[0], point[1], raster.geot) for point in geo_points
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+ ]).astype(np.int32)
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+ # TODO: Label category
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+ cv2.fillPoly(tmp_img, [xy_points], 1) # Fill with polygons
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+ save_geotiff(tmp_img, save_path, raster.proj, raster.geot)
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+ os.remove(temp_geojson_path)
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+
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+
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+if __name__ == "__main__":
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+ parser = argparse.ArgumentParser()
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+ parser.add_argument("--srcimg_path", type=str, required=True, \
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+ help="Path of the original image.")
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+ parser.add_argument("--geojson_path", type=str, required=True, \
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+ help="Path of the GeoJSON file (the coordinate system is WGS84).")
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+ parser.add_argument("--save_path", type=str, required=True, \
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+ help="Path to store the mask data.")
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+ args = parser.parse_args()
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+ convert_data(args.srcimg_path, args.geojson_path, args.save_path)
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