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python: 'cv2.' -> 'cv.' via 'import cv2 as cv'

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This commit is contained in:
Alexander Alekhin
2017-12-11 12:55:03 +03:00
parent 9665dde678
commit 5560db73bf
162 changed files with 2083 additions and 2084 deletions
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samples/python/video_v4l2.py
+19 -19
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@@ -17,51 +17,51 @@ Keys:
# Python 2/3 compatibility
from __future__ import print_function
import cv2
import cv2 as cv
def decode_fourcc(v):
v = int(v)
return "".join([chr((v >> 8 * i) & 0xFF) for i in range(4)])
font = cv2.FONT_HERSHEY_SIMPLEX
font = cv.FONT_HERSHEY_SIMPLEX
color = (0, 255, 0)
cap = cv2.VideoCapture(0)
cap.set(cv2.CAP_PROP_AUTOFOCUS, False) # Known bug: https://github.com/opencv/opencv/pull/5474
cap = cv.VideoCapture(0)
cap.set(cv.CAP_PROP_AUTOFOCUS, False) # Known bug: https://github.com/opencv/opencv/pull/5474
cv2.namedWindow("Video")
cv.namedWindow("Video")
convert_rgb = True
fps = int(cap.get(cv2.CAP_PROP_FPS))
focus = int(min(cap.get(cv2.CAP_PROP_FOCUS) * 100, 2**31-1)) # ceil focus to C_LONG as Python3 int can go to +inf
fps = int(cap.get(cv.CAP_PROP_FPS))
focus = int(min(cap.get(cv.CAP_PROP_FOCUS) * 100, 2**31-1)) # ceil focus to C_LONG as Python3 int can go to +inf
cv2.createTrackbar("FPS", "Video", fps, 30, lambda v: cap.set(cv2.CAP_PROP_FPS, v))
cv2.createTrackbar("Focus", "Video", focus, 100, lambda v: cap.set(cv2.CAP_PROP_FOCUS, v / 100))
cv.createTrackbar("FPS", "Video", fps, 30, lambda v: cap.set(cv.CAP_PROP_FPS, v))
cv.createTrackbar("Focus", "Video", focus, 100, lambda v: cap.set(cv.CAP_PROP_FOCUS, v / 100))
while True:
status, img = cap.read()
fourcc = decode_fourcc(cap.get(cv2.CAP_PROP_FOURCC))
fourcc = decode_fourcc(cap.get(cv.CAP_PROP_FOURCC))
fps = cap.get(cv2.CAP_PROP_FPS)
fps = cap.get(cv.CAP_PROP_FPS)
if not bool(cap.get(cv2.CAP_PROP_CONVERT_RGB)):
if not bool(cap.get(cv.CAP_PROP_CONVERT_RGB)):
if fourcc == "MJPG":
img = cv2.imdecode(img, cv2.IMREAD_GRAYSCALE)
img = cv.imdecode(img, cv.IMREAD_GRAYSCALE)
elif fourcc == "YUYV":
img = cv2.cvtColor(img, cv2.COLOR_YUV2GRAY_YUYV)
img = cv.cvtColor(img, cv.COLOR_YUV2GRAY_YUYV)
else:
print("unsupported format")
break
cv2.putText(img, "Mode: {}".format(fourcc), (15, 40), font, 1.0, color)
cv2.putText(img, "FPS: {}".format(fps), (15, 80), font, 1.0, color)
cv2.imshow("Video", img)
cv.putText(img, "Mode: {}".format(fourcc), (15, 40), font, 1.0, color)
cv.putText(img, "FPS: {}".format(fps), (15, 80), font, 1.0, color)
cv.imshow("Video", img)
k = cv2.waitKey(1)
k = cv.waitKey(1)
if k == 27:
break
elif k == ord('g'):
convert_rgb = not convert_rgb
cap.set(cv2.CAP_PROP_CONVERT_RGB, convert_rgb)
cap.set(cv.CAP_PROP_CONVERT_RGB, convert_rgb)