forked from huawei/mindspore2022
122 lines
4.4 KiB
Python
122 lines
4.4 KiB
Python
# Copyright 2021 Huawei Technologies Co., Ltd
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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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"""
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Testing Rotate Python API
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"""
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import cv2
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import mindspore.dataset as ds
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import mindspore.dataset.vision.c_transforms as c_vision
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from mindspore import log as logger
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from mindspore.dataset.vision.utils import Inter
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from util import visualize_image, diff_mse
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DATA_DIR = ["../data/dataset/test_tf_file_3_images/train-0000-of-0001.data"]
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SCHEMA_DIR = "../data/dataset/test_tf_file_3_images/datasetSchema.json"
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IMAGE_FILE = "../data/dataset/apple.jpg"
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def test_rotate_pipeline_with_expanding(plot=False):
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"""
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Test Rotate of c_transforms with expanding
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"""
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logger.info("test_rotate_pipeline_with_expanding")
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# First dataset
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dataset1 = ds.TFRecordDataset(DATA_DIR, SCHEMA_DIR, shuffle=False)
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decode_op = c_vision.Decode()
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rotate_op = c_vision.Rotate(90, expand=True)
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dataset1 = dataset1.map(operations=decode_op, input_columns=["image"])
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dataset1 = dataset1.map(operations=rotate_op, input_columns=["image"])
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# Second dataset
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dataset2 = ds.TFRecordDataset(DATA_DIR, SCHEMA_DIR, columns_list=["image"], shuffle=False)
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dataset2 = dataset2.map(operations=decode_op, input_columns=["image"])
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num_iter = 0
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for data1, data2 in zip(dataset1.create_dict_iterator(num_epochs=1, output_numpy=True),
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dataset2.create_dict_iterator(num_epochs=1, output_numpy=True)):
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if num_iter > 0:
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break
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rotate_ms = data1["image"]
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original = data2["image"]
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rotate_cv = cv2.rotate(original, cv2.ROTATE_90_COUNTERCLOCKWISE)
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mse = diff_mse(rotate_ms, rotate_cv)
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logger.info("rotate_{}, mse: {}".format(num_iter + 1, mse))
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assert mse == 0
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num_iter += 1
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if plot:
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visualize_image(original, rotate_ms, mse, rotate_cv)
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def test_rotate_pipeline_without_expanding():
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"""
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Test Rotate of c_transforms without expanding
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"""
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logger.info("test_rotate_pipeline_without_expanding")
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# Create a Dataset then decode and rotate the image
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dataset = ds.TFRecordDataset(DATA_DIR, SCHEMA_DIR, shuffle=False)
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decode_op = c_vision.Decode()
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resize_op = c_vision.Resize((64, 128))
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rotate_op = c_vision.Rotate(30)
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dataset = dataset.map(operations=decode_op, input_columns=["image"])
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dataset = dataset.map(operations=resize_op, input_columns=["image"])
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dataset = dataset.map(operations=rotate_op, input_columns=["image"])
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for data in dataset.create_dict_iterator(num_epochs=1, output_numpy=True):
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rotate_img = data["image"]
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assert rotate_img.shape == (64, 128, 3)
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def test_rotate_eager():
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"""
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Test Rotate with eager mode
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"""
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logger.info("test_rotate_eager")
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img = cv2.imread(IMAGE_FILE)
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resize_img = c_vision.Resize((32, 64))(img)
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rotate_img = c_vision.Rotate(-90, expand=True)(resize_img)
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assert rotate_img.shape == (64, 32, 3)
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def test_rotate_exception():
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"""
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Test Rotate with invalid parameters
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"""
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logger.info("test_rotate_exception")
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try:
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_ = c_vision.Rotate("60")
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except TypeError as e:
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logger.info("Got an exception in Rotate: {}".format(str(e)))
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assert "not of type [<class 'float'>, <class 'int'>]" in str(e)
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try:
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_ = c_vision.Rotate(30, Inter.BICUBIC, False, (0, 0, 0))
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except ValueError as e:
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logger.info("Got an exception in Rotate: {}".format(str(e)))
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assert "Value center needs to be a 2-tuple." in str(e)
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try:
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_ = c_vision.Rotate(-120, Inter.NEAREST, False, (-1, -1), (255, 255))
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except TypeError as e:
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logger.info("Got an exception in Rotate: {}".format(str(e)))
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assert "fill_value should be a single integer or a 3-tuple." in str(e)
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if __name__ == "__main__":
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test_rotate_pipeline_with_expanding(False)
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test_rotate_pipeline_without_expanding()
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test_rotate_eager()
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test_rotate_exception()
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