def _gen_cmy_data(self):
ds = tf.data.Dataset.from_generator(
self._gen, (tf.uint8, tf.int64), (tf.TensorShape(
[self.IMAGE_SIZE, self.IMAGE_SIZE, 3]), tf.TensorShape([])))
data = image_dataloader.ImageClassifierDataLoader(
ds, self.IMAGES_PER_CLASS * 3, ['cyan', 'magenta', 'yellow'])
return data
def test_split(self):
ds = tf.data.Dataset.from_tensor_slices([[0, 1], [1, 1], [0, 0], [1, 0]])
data = image_dataloader.ImageClassifierDataLoader(ds, 4, 2, ['pos', 'neg'])
train_data, test_data = data.split(0.5)
self.assertEqual(train_data.size, 2)
for i, elem in enumerate(train_data.dataset):
self.assertTrue((elem.numpy() == np.array([i, 1])).all())
self.assertEqual(train_data.num_classes, 2)
self.assertEqual(train_data.index_to_label, ['pos', 'neg'])
self.assertEqual(test_data.size, 2)
for i, elem in enumerate(test_data.dataset):
self.assertTrue((elem.numpy() == np.array([i, 0])).all())
self.assertEqual(test_data.num_classes, 2)
self.assertEqual(test_data.index_to_label, ['pos', 'neg'])
