From f132aba540f66a248fec66272a417adebbccf12c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=AE=B6=E6=89=8D=20=E7=8E=8B?= <jiacai_wang@qq.com>
Date: Thu, 2 May 2019 14:35:40 +0800
Subject: [PATCH] =?UTF-8?q?=E5=8C=85=E8=A3=85=E6=88=90=E5=87=BD=E6=95=B0?=
 =?UTF-8?q?=EF=BC=8C=E5=87=91=E4=BB=A3=E7=A0=81=E9=87=8F?=
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---
 MV.py | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 MV.py

diff --git a/MV.py b/MV.py
new file mode 100644
index 0000000..fcb4250
--- /dev/null
+++ b/MV.py
@@ -0,0 +1,34 @@
+import cv2 as cv
+import numpy as np
+cap = cv.VideoCapture("./vid/zootopia.mkv")
+ret, frame1 = cap.read()
+prvs = cv.cvtColor(frame1,cv.COLOR_BGR2GRAY)
+hsv = np.zeros_like(frame1)
+hsv[...,1] = 255
+print("read")
+cap.set(cv.CAP_PROP_POS_FRAMES,59760)
+print("read done")
+while(1):
+    for i in range(1,12):
+        cap.read()
+    ret, frame2 = cap.read()
+    next = cv.cvtColor(frame2,cv.COLOR_BGR2GRAY)
+    flow = cv.calcOpticalFlowFarneback(prvs,next, None, 0.5, 3, 15, 3, 5, 1.2, 0)
+    mag, ang = cv.cartToPolar(flow[...,0], flow[...,1])
+    hsv[...,0] = ang*180/np.pi/2
+    hsv[...,2] = cv.normalize(mag,None,0,255,cv.NORM_MINMAX)
+    bgr = cv.cvtColor(hsv,cv.COLOR_HSV2BGR)
+    cv.namedWindow("frame2", cv.WINDOW_NORMAL)
+    cv.namedWindow("frame", cv.WINDOW_NORMAL)
+    cv.imshow('frame2',bgr)
+    cv.imshow("frame",frame2)
+    cv.waitKey(1)
+    #k = cv.waitKey(0.1) & 0xff
+    #if k == 27:
+    #    break
+    #elif k == ord('s'):
+    #    cv.imwrite('opticalfb.png',frame2)
+    #    cv.imwrite('opticalhsv.png',bgr)
+    prvs = next
+cap.release()
+cv.destroyAllWindows()
\ No newline at end of file