def rotateNEstimateImage():
"""
Example of image rotation.
"""
nonRotatedImage = VLImage.load(filename=EXAMPLE_O)
faceEngine = VLFaceEngine()
orientationModeEstimator = faceEngine.createOrientationModeEstimator()
#: rotate & estimate | not rotated
image = VLImage.rotate(nonRotatedImage, RotationAngle.ANGLE_0)
pprint.pprint(orientationModeEstimator.estimate(image))
#: rotate & estimate | left
image = VLImage.rotate(nonRotatedImage, RotationAngle.ANGLE_90)
pprint.pprint(orientationModeEstimator.estimate(image))
#: rotate & estimate | right
image = VLImage.rotate(nonRotatedImage, RotationAngle.ANGLE_270)
pprint.pprint(orientationModeEstimator.estimate(image))
#: rotate & estimate | upside down
image = VLImage.rotate(nonRotatedImage, RotationAngle.ANGLE_180)
pprint.pprint(orientationModeEstimator.estimate(image))
async def asyncRotateNEstimateImage():
"""
Async example of image rotation.
"""
nonRotatedImage = VLImage.load(filename=EXAMPLE_O)
faceEngine = VLFaceEngine()
orientationModeEstimator = faceEngine.createOrientationModeEstimator()
#: rotate & estimate | not rotated
image = VLImage.rotate(nonRotatedImage, RotationAngle.ANGLE_0)
orientation = await orientationModeEstimator.estimate(image,
asyncEstimate=True)
pprint.pprint(orientation)
task1 = orientationModeEstimator.estimate(image, asyncEstimate=True)
task2 = orientationModeEstimator.estimate(image, asyncEstimate=True)
for task in (task1, task2):
pprint.pprint(task.get())
def test_image_rotation(self):
"""
Test image rotation: 0, 90, 180 and 270 degrees
"""
testData = [
(RotationAngle.ANGLE_0, OrientationType.NORMAL, ROTATED0),
(RotationAngle.ANGLE_90, OrientationType.LEFT, ROTATED90),
(RotationAngle.ANGLE_180, OrientationType.UPSIDE_DOWN, ROTATED180),
(RotationAngle.ANGLE_270, OrientationType.RIGHT, ROTATED270),
]
for rotationAngle, expectedOrientationMode, expectedImageFileName in testData:
with self.subTest(rotationAngle=rotationAngle):
rotatedImage = VLImage.rotate(self.image, rotationAngle)
orientationMode = self.orientationModeEstimator.estimate(
rotatedImage)
assert orientationMode == expectedOrientationMode
assert (VLImage.load(filename=expectedImageFileName).asPillow(
).tobytes() == rotatedImage.asPillow().tobytes())