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motempl.py sample works

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This commit is contained in:
Alexander Mordvintsev
2011-07-11 07:42:37 +00:00
parent b509cc2a4d
commit b175348d93
1 changed files with 29 additions and 5 deletions
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34
samples/python2/motempl.py
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@@ -3,11 +3,18 @@ import cv2, cv
import video
from common import nothing, clock, draw_str
MHI_DURATION = 1.0
DEFAULT_THRESHOLD = 16
MAX_TIME_DELTA = 0.5
MHI_DURATION = 0.5
DEFAULT_THRESHOLD = 32
MAX_TIME_DELTA = 0.25
MIN_TIME_DELTA = 0.05
def draw_motion_comp(vis, (x, y, w, h), angle, color):
cv2.rectangle(vis, (x, y), (x+w, y+h), (0, 255, 0))
r = min(w/2, h/2)
cx, cy = x+w/2, y+h/2
angle = np.deg2rad(angle)
cv2.circle(vis, (cx, cy), r, color, 3)
cv2.line(vis, (cx, cy), (int(cx+np.cos(angle)*r), int(cy+np.sin(angle)*r)), color, 3)
if __name__ == '__main__':
import sys
@@ -31,10 +38,11 @@ if __name__ == '__main__':
frame_diff = cv2.absdiff(frame, prev_frame)
gray_diff = cv2.cvtColor(frame_diff, cv.CV_BGR2GRAY)
thrs = cv2.getTrackbarPos('threshold', 'motempl')
ret, motion_mask = cv2.threshold(gray_diff, thrs, 255, cv2.THRESH_BINARY)
ret, motion_mask = cv2.threshold(gray_diff, thrs, 1, cv2.THRESH_BINARY)
timestamp = clock()
cv2.updateMotionHistory(motion_mask, motion_history, timestamp, MHI_DURATION)
mg_mask, mg_orient = cv2.calcMotionGradient( motion_history, MAX_TIME_DELTA, MIN_TIME_DELTA, apertureSize=5 );
mg_mask, mg_orient = cv2.calcMotionGradient( motion_history, MAX_TIME_DELTA, MIN_TIME_DELTA, apertureSize=5 )
seg_mask, seg_bounds = cv2.segmentMotion(motion_history, timestamp, MAX_TIME_DELTA)
visual_name = visuals[cv2.getTrackbarPos('visual', 'motempl')]
if visual_name == 'input':
@@ -48,6 +56,22 @@ if __name__ == '__main__':
hsv[:,:,0] = mg_orient/2
hsv[:,:,2] = mg_mask*255
vis = cv2.cvtColor(hsv, cv.CV_HSV2BGR)
for i, rect in enumerate([(0, 0, w, h)] + list(seg_bounds)):
x, y, rw, rh = rect
area = rw*rh
if area < 64**2:
continue
silh_roi = motion_mask [y:y+rh,x:x+rw]
orient_roi = mg_orient [y:y+rh,x:x+rw]
mask_roi = mg_mask [y:y+rh,x:x+rw]
mhi_roi = motion_history[y:y+rh,x:x+rw]
if cv2.norm(silh_roi, cv2.NORM_L1) < area*0.05:
continue
angle = cv2.calcGlobalOrientation(orient_roi, mask_roi, mhi_roi, timestamp, MHI_DURATION)
color = ((255, 0, 0), (0, 0, 255))[i == 0]
draw_motion_comp(vis, rect, angle, color)
draw_str(vis, (20, 20), visual_name)
cv2.imshow('motempl', vis)