prouast / video-sensor-processing Goto Github PK
View Code? Open in Web Editor NEWImport and processing of video sensor data for intake gesture recognition. Support for OREBA dataset.
License: MIT License
Import and processing of video sensor data for intake gesture recognition. Support for OREBA dataset.
License: MIT License
Hey,
The calc_opt_flow()
function seems to be calculating all optical flows with respect to the first frame in the video (see below). Is this the intended behavior? Seems like next
needs to be assigned to prvs
at the end of each iteration.
def calc_opt_flow(frames):
"""Calculate optical flow as Dual TV-L1"""
frame_1 = frames[0]
prvs = cv2.cvtColor(frame_1, cv2.COLOR_RGB2GRAY)
flows = np.empty((frames.shape[0]-1, frames.shape[1], frames.shape[2], 2),
np.dtype('float32'))
i = 0
for frame_2 in frames[1:]:
next = cv2.cvtColor(frame_2, cv2.COLOR_RGB2GRAY)
dual_tv = cv2.optflow.createOptFlow_DualTVL1()
#dual_tv = cv2.DualTVL1OpticalFlow_create()
flow = dual_tv.calc(prvs, next, None)
flows[i] = flow
i += 1
return flows
I might be missing something here, so let me know. Thanks!
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