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viz flow by cv2 #1

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viz flow by cv2 #1

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12 changes: 11 additions & 1 deletion demo.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,15 @@
import tensorflow as tf
import scipy.io as sio
from tvnet import TVNet

def viz_flow(flow):
h, w = flow.shape[:2]
hsv = np.zeros((h, w, 3), np.uint8)
mag, ang = cv2.cartToPolar(flow[...,0], flow[...,1])
hsv[...,0] = ang*180/np.pi/2
hsv[...,1] = cv2.normalize(mag,None,0,255,cv2.NORM_MINMAX)
hsv[...,2] = 255
bgr = cv2.cvtColor(hsv,cv2.COLOR_HSV2BGR)
return bgr
flags = tf.app.flags
flags.DEFINE_integer("scale", 5, " TVNet scale [3]")
flags.DEFINE_integer("warp", 5, " TVNet warp [1]")
Expand Down Expand Up @@ -51,3 +59,5 @@
os.mkdir('result')
res_path = os.path.join('result', 'result.mat')
sio.savemat(res_path, {'flow': flow_mat})
flow_bgr = viz_flow(flow_mat)
cv2.imwrite(os.path.join('result', 'result.png'), flow_bgr)