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| import cv2 | |
| import json | |
| import pandas as pd | |
| import numpy as np | |
| def convert_to_pandas(content): | |
| events = [] | |
| for obj in content: | |
| for f in obj['frames']: | |
| events.append({ |
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| __author__ = 'Christoph Heindl' | |
| __copyright__ = 'Copyright 2017' | |
| __license__ = 'BSD' | |
| """Trains a HMM based on gradient descent optimization. | |
| The parameters (theta) of the model are transition and | |
| emission probabilities, as well as the initial state probabilities. | |
| Given a start solution, the negative log likelihood of data given the |
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| __author__ = 'Christoph Heindl' | |
| __copyright__ = 'Copyright 2017' | |
| __license__ = 'BSD' | |
| """Trains a HMM based on gradient descent optimization. | |
| The parameters (theta) of the model are transition and | |
| emission probabilities, as well as the initial state probabilities. | |
| Given a start solution, the negative log likelihood of data given the |
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| import numpy as np | |
| import matplotlib.pyplot as plt | |
| # Relation of SVD to PCA and eigen-problems | |
| # A = USV' | |
| # A'A = VSU'USV' = VS^2V' | |
| # A'AV = VS^2V'V | |
| # A'AV = VS^2 | |
| # which is an eigenvector problem. Means V are the eigenvectors of A'A. | |
| # A similar argument leads to U being the eigenvectors AA'. |
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| import numpy as np | |
| import matplotlib.pyplot as plt | |
| o3d = np.array([-100, -100, 50]) | |
| d3d = np.array([1, 1, 5.]) | |
| d3d /= np.linalg.norm(d3d) | |
| t3d = np.arange(0, 100, 1.) | |
| p3d = o3d + d3d * t3d[:, None] |
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| import numpy as np | |
| import matplotlib.pyplot as plt | |
| from matplotlib.animation import FuncAnimation | |
| from matplotlib.patches import Ellipse | |
| import math | |
| # Kalman | |
| def lkf_predict(x, P, A, B, u, Q): |
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| /** | |
| * C++ property implementation | |
| * Christoph Heindl 2011 | |
| * christoph.heindl@gmail.com | |
| */ | |
| #pragma once | |
| #include <cheind/properties/property.h> | |
| #include <cheind/properties/policy_optional_value.h> |
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