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Default to empty result: Fixes Ahmednull/L2CS-Net#22 #23

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Default to empty result: Fixes Ahmednull/L2CS-Net#22 #23

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27 changes: 16 additions & 11 deletions l2cs/pipeline.py
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,13 @@ def step(self, frame: np.ndarray) -> GazeResultContainer:
landmarks = []
scores = []

# default stacks
pitch = np.empty((0,1))
yaw = np.empty((0,1))
bboxes_stack = np.empty((0,1))
landmarks_stack = np.empty((0,1))
scores_stack = np.empty((0,1))

if self.include_detector:
faces = self.detector(frame)

Expand Down Expand Up @@ -86,24 +93,22 @@ def step(self, frame: np.ndarray) -> GazeResultContainer:
landmarks.append(landmark)
scores.append(score)

# Predict gaze
pitch, yaw = self.predict_gaze(np.stack(face_imgs))

else:

pitch = np.empty((0,1))
yaw = np.empty((0,1))

if len(face_imgs) > 0:
# Predict gaze
pitch, yaw = self.predict_gaze(np.stack(face_imgs))
bboxes_stack = np.stack(bboxes)
landmarks_stack = np.stack(landmarks)
scores_stack = np.stack(scores)
else:
pitch, yaw = self.predict_gaze(frame)

# Save data
results = GazeResultContainer(
pitch=pitch,
yaw=yaw,
bboxes=np.stack(bboxes),
landmarks=np.stack(landmarks),
scores=np.stack(scores)
bboxes=bboxes_stack,
landmarks=landmarks_stack,
scores=scores_stack
)

return results
Expand Down