Save image stream with timestamp using OpenCV Python
I am using open CV, Python to save same camera Images in jpg and png format.
I am using timestamp to save the images in sequence. My code sample is following. But the problem is it only saves one image every time I execute. What will be the best solution to save the image stream with timestamp
import numpy as np
import cv2
import time
camera = cv2.VideoCapture(0)
time = time.time() #timestamp
def saveJpgImage(frame):
#process image
img_name = "opencv_frame_{}.jpg".format(time)
cv2.imwrite(img_name, frame)
def savePngImage():
#process image
img_name = "opencv_frame_{}.png".format(time)
cv2.imwrite(img_name, frame)
def main():
while True:
ret, frame = cam.read()
cv2.imshow("Camera Images", frame)
if not ret:
break
k = cv2.waitKey(1)
if k%256 == 27:
# ESC pressed
print("Escape hit, closing...")
break
elif k%256 == 32:
saveJpgImage(frame)
savePngImage(frame)
if __name__ == '__main__':
main()
python python-2.7 opencv3.0
asked Nov 11 at 14:21
amran hossen
325
add a comment |
I am using open CV, Python to save same camera Images in jpg and png format.
I am using timestamp to save the images in sequence. My code sample is following. But the problem is it only saves one image every time I execute. What will be the best solution to save the image stream with timestamp
import numpy as np
import cv2
import time
camera = cv2.VideoCapture(0)
time = time.time() #timestamp
def saveJpgImage(frame):
#process image
img_name = "opencv_frame_{}.jpg".format(time)
cv2.imwrite(img_name, frame)
def savePngImage():
#process image
img_name = "opencv_frame_{}.png".format(time)
cv2.imwrite(img_name, frame)
def main():
while True:
ret, frame = cam.read()
cv2.imshow("Camera Images", frame)
if not ret:
break
k = cv2.waitKey(1)
if k%256 == 27:
# ESC pressed
print("Escape hit, closing...")
break
elif k%256 == 32:
saveJpgImage(frame)
savePngImage(frame)
if __name__ == '__main__':
main()
python python-2.7 opencv3.0
asked Nov 11 at 14:21
amran hossen
325
add a comment |
I am using open CV, Python to save same camera Images in jpg and png format.
I am using timestamp to save the images in sequence. My code sample is following. But the problem is it only saves one image every time I execute. What will be the best solution to save the image stream with timestamp
import numpy as np
import cv2
import time
camera = cv2.VideoCapture(0)
time = time.time() #timestamp
def saveJpgImage(frame):
#process image
img_name = "opencv_frame_{}.jpg".format(time)
cv2.imwrite(img_name, frame)
def savePngImage():
#process image
img_name = "opencv_frame_{}.png".format(time)
cv2.imwrite(img_name, frame)
def main():
while True:
ret, frame = cam.read()
cv2.imshow("Camera Images", frame)
if not ret:
break
k = cv2.waitKey(1)
if k%256 == 27:
# ESC pressed
print("Escape hit, closing...")
break
elif k%256 == 32:
saveJpgImage(frame)
savePngImage(frame)
if __name__ == '__main__':
main()
python python-2.7 opencv3.0
asked Nov 11 at 14:21
amran hossen
325
I am using open CV, Python to save same camera Images in jpg and png format.
I am using timestamp to save the images in sequence. My code sample is following. But the problem is it only saves one image every time I execute. What will be the best solution to save the image stream with timestamp
import numpy as np
import cv2
import time
camera = cv2.VideoCapture(0)
time = time.time() #timestamp
def saveJpgImage(frame):
#process image
img_name = "opencv_frame_{}.jpg".format(time)
cv2.imwrite(img_name, frame)
def savePngImage():
#process image
img_name = "opencv_frame_{}.png".format(time)
cv2.imwrite(img_name, frame)
def main():
while True:
ret, frame = cam.read()
cv2.imshow("Camera Images", frame)
if not ret:
break
k = cv2.waitKey(1)
if k%256 == 27:
# ESC pressed
print("Escape hit, closing...")
break
elif k%256 == 32:
saveJpgImage(frame)
savePngImage(frame)
if __name__ == '__main__':
main()
python python-2.7 opencv3.0
python python-2.7 opencv3.0
asked Nov 11 at 14:21
amran hossen
325
asked Nov 11 at 14:21
amran hossen
325
edited Nov 11 at 14:31
asked Nov 11 at 14:21
amran hossen
325
asked Nov 11 at 14:21
amran hossen
325
asked Nov 11 at 14:21
amran hossen
325
325
add a comment |
add a comment |
1 Answer
1
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votes
You're testing when a key is pressed and calling the save function when it's pressed. If you want to call a video loop when the key is pressed please do so! (don't forget to include the escape method!)
answered Nov 12 at 4:51
Raphaël Poli
518
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You're testing when a key is pressed and calling the save function when it's pressed. If you want to call a video loop when the key is pressed please do so! (don't forget to include the escape method!)
answered Nov 12 at 4:51
Raphaël Poli
518
add a comment |
You're testing when a key is pressed and calling the save function when it's pressed. If you want to call a video loop when the key is pressed please do so! (don't forget to include the escape method!)
answered Nov 12 at 4:51
Raphaël Poli
518
add a comment |
You're testing when a key is pressed and calling the save function when it's pressed. If you want to call a video loop when the key is pressed please do so! (don't forget to include the escape method!)
answered Nov 12 at 4:51
Raphaël Poli
518
You're testing when a key is pressed and calling the save function when it's pressed. If you want to call a video loop when the key is pressed please do so! (don't forget to include the escape method!)
answered Nov 12 at 4:51
Raphaël Poli
518
answered Nov 12 at 4:51
Raphaël Poli
518
answered Nov 12 at 4:51
Raphaël Poli
518
answered Nov 12 at 4:51
Raphaël Poli
518
518
add a comment |
add a comment |
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