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Diffstat (limited to 'src/argaze.test/GazeAnalysis')
| -rw-r--r-- | src/argaze.test/GazeAnalysis/DispersionBasedGazeMovementIdentifier.py | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/argaze.test/GazeAnalysis/DispersionBasedGazeMovementIdentifier.py b/src/argaze.test/GazeAnalysis/DispersionBasedGazeMovementIdentifier.py new file mode 100644 index 0000000..01b2aad --- /dev/null +++ b/src/argaze.test/GazeAnalysis/DispersionBasedGazeMovementIdentifier.py @@ -0,0 +1,156 @@ +#!/usr/bin/env python + +import unittest +import random +import time + +from argaze import GazeFeatures +from argaze.GazeAnalysis import DispersionBasedGazeMovementIdentifier + +import numpy + +def build_gaze_fixation(size: int, center: tuple, dispersion: float, start_time: float, min_time: float, max_time: float, validity: list = []): + """ Generate N TimeStampedGazePsoitions dispersed around a center point for testing purpose. + Timestamps are current time after random sleep (second). + GazePositions are random values. + """ + ts_gaze_positions = GazeFeatures.TimeStampedGazePositions() + + for i in range(0, size): + + # Check position validity + valid = True + if len(validity) > i: + + valid = validity[i] + + if valid: + + # Edit gaze position + random_x = center[0] + dispersion * (random.random() - 0.5) + random_y = center[1] + dispersion * (random.random() - 0.5) + gaze_position = GazeFeatures.GazePosition((random_x, random_y)) + + else: + + gaze_position = GazeFeatures.UnvalidGazePosition() + + # Store gaze position + ts = time.time() - start_time + ts_gaze_positions[ts] = gaze_position + + # Sleep a random time + sleep_time = random.random() * (max_time - min_time) + min_time + time.sleep(sleep_time) + + return ts_gaze_positions + +class TestDispersionBasedGazeMovementIdentifierClass(unittest.TestCase): + """Test DispersionBasedGazeMovementIdentifier class.""" + + def test_fixation_identification(self): + """Test DispersionBasedGazeMovementIdentifier fixation identification.""" + + size = 10 + center = (0, 0) + dispersion = 10 + start_time = time.time() + min_time = 0.01 + max_time = 0.1 + + ts_gaze_positions = build_gaze_fixation(size, center, dispersion, start_time, min_time, max_time) + gaze_movement_identifier = DispersionBasedGazeMovementIdentifier.GazeMovementIdentifier(dispersion_threshold=dispersion, duration_threshold=min_time*2) + ts_fixations, ts_saccades, ts_status = gaze_movement_identifier.identify(ts_gaze_positions) + + # Check result size + self.assertEqual(len(ts_fixations), 1) + self.assertEqual(len(ts_saccades), 0) + self.assertEqual(len(ts_status), size) + + # Check fixation + ts, fixation = ts_fixations.pop_first() + + self.assertEqual(len(fixation.positions.keys()), size) + self.assertLessEqual(fixation.dispersion, dispersion) + self.assertGreaterEqual(fixation.duration, size * min_time) + self.assertLessEqual(fixation.duration, size * max_time) + + def test_fixation_and_saccade_identification(self): + """Test DispersionBasedGazeMovementIdentifier fixation and saccade identification.""" + + size = 10 + center_A = (0, 0) + center_B = (50, 50) + dispersion = 10 + start_time = time.time() + min_time = 0.01 + max_time = 0.1 + + ts_gaze_positions_A = build_gaze_fixation(size, center_A, dispersion, start_time, min_time, max_time) + ts_gaze_positions_B = build_gaze_fixation(size, center_B, dispersion, start_time, min_time, max_time) + + ts_gaze_positions = ts_gaze_positions_A.append(ts_gaze_positions_B) + + gaze_movement_identifier = DispersionBasedGazeMovementIdentifier.GazeMovementIdentifier(dispersion_threshold=dispersion, duration_threshold=min_time*2) + ts_fixations, ts_saccades, ts_status = gaze_movement_identifier.identify(ts_gaze_positions) + + # Check result size + self.assertEqual(len(ts_fixations), 2) + self.assertEqual(len(ts_saccades), 1) + self.assertEqual(len(ts_status), size*2) + + # Check first fixation + ts, fixation = ts_fixations.pop_first() + + self.assertEqual(len(fixation.positions.keys()), size) + self.assertLessEqual(fixation.dispersion, dispersion) + self.assertGreaterEqual(fixation.duration, size * min_time) + self.assertLessEqual(fixation.duration, size * max_time) + + # Check first saccade + ts, saccade = ts_saccades.pop_first() + + self.assertEqual(len(saccade.positions.keys()), 2) + self.assertGreaterEqual(saccade.duration, min_time) + self.assertLessEqual(saccade.duration, max_time) + + # Check second fixation + ts, fixation = ts_fixations.pop_first() + + self.assertEqual(len(fixation.positions.keys()), size) + self.assertLessEqual(fixation.dispersion, dispersion) + self.assertGreaterEqual(fixation.duration, size * min_time) + self.assertLessEqual(fixation.duration, size * max_time) + + def test_invalid_gaze_position(self): + """Test DispersionBasedGazeMovementIdentifier fixation and saccade identification with invalid gaze position.""" + + size = 10 + center = (0, 0) + dispersion = 10 + start_time = time.time() + min_time = 0.01 + max_time = 0.1 + validity = [True, True, True, True, False, False, True, True, True, True] + + ts_gaze_positions = build_gaze_fixation(size, center, dispersion, start_time, min_time, max_time, validity) + + gaze_movement_identifier = DispersionBasedGazeMovementIdentifier.GazeMovementIdentifier(dispersion_threshold=dispersion, duration_threshold=min_time*2) + ts_fixations, ts_saccades, ts_status = gaze_movement_identifier.identify(ts_gaze_positions) + + # Check result size + self.assertEqual(len(ts_fixations), 1) + self.assertEqual(len(ts_saccades), 0) + self.assertEqual(len(ts_status), size-2) + + # Check fixation + ts, fixation = ts_fixations.pop_first() + + self.assertEqual(len(fixation.positions.keys()), size-2) + self.assertLessEqual(fixation.dispersion, dispersion) + self.assertGreaterEqual(fixation.duration, size * min_time) + self.assertLessEqual(fixation.duration, size * max_time) + +if __name__ == '__main__': + + unittest.main()
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