我使用 cv2.VideoCapured 捕获视频并显示。未保存同时显示捕获的视频。如何在此捕获的视频上插入图像以同时显示。
最佳答案
假设您想将图像直接添加到某个 x,y 位置的视频帧,而不进行任何颜色混合或图像透明度。您可以使用以下python代码:
#!/usr/bin/python3
import cv2
# load the overlay image. size should be smaller than video frame size
img = cv2.imread('logo.png')
# Get Image dimensions
img_height, img_width, _ = img.shape
# Start Capture
cap = cv2.VideoCapture(0)
# Get frame dimensions
frame_width = cap.get(cv2.CAP_PROP_FRAME_WIDTH )
frame_height = cap.get(cv2.CAP_PROP_FRAME_HEIGHT )
# Print dimensions
print('image dimensions (HxW):',img_height,"x",img_width)
print('frame dimensions (HxW):',int(frame_height),"x",int(frame_width))
# Decide X,Y location of overlay image inside video frame.
# following should be valid:
# * image dimensions must be smaller than frame dimensions
# * x+img_width <= frame_width
# * y+img_height <= frame_height
# otherwise you can resize image as part of your code if required
x = 50
y = 50
while(True):
# Capture frame-by-frame
ret, frame = cap.read()
# add image to frame
frame[ y:y+img_height , x:x+img_width ] = img
# Display the resulting frame
cv2.imshow('frame',frame)
# Exit if ESC key is pressed
if cv2.waitKey(20) & 0xFF == 27:
break
# When everything done, release the capture
cap.release()
cv2.destroyAllWindows()
如果我的假设是错误的,请提供更多详细信息。
关于python - 如何在 Python 中捕获的视频上插入图像,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56371365/