Please help me design a Python code for a fire identification camera based on OpenCV design
时间: 2024-03-22 15:37:40 浏览: 83
使用opencv和python进行智能火灾检测-项目开发
Sure! Here's an example Python code for a fire identification camera based on OpenCV:
```python
import cv2
import numpy as np
# define the video capture device
cap = cv2.VideoCapture(0)
# define the lower and upper boundaries of the "fire" color in the HSV color space
lower_fire = np.array([0, 50, 50])
upper_fire = np.array([10, 255, 255])
# loop over frames from the video stream
while True:
# grab the frame from the video stream
ret, frame = cap.read()
# convert the frame to the HSV color space
hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)
# construct a mask for the "fire" color, then perform a series of dilations and erosions
mask = cv2.inRange(hsv, lower_fire, upper_fire)
mask = cv2.erode(mask, None, iterations=2)
mask = cv2.dilate(mask, None, iterations=4)
# find contours in the mask and initialize the current (x, y) center
contours, hierarchy = cv2.findContours(mask.copy(), cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
center = None
# only proceed if at least one contour was found
if len(contours) > 0:
# find the largest contour in the mask, then use it to compute the minimum enclosing circle and centroid
c = max(contours, key=cv2.contourArea)
((x, y), radius) = cv2.minEnclosingCircle(c)
M = cv2.moments(c)
center = (int(M["m10"] / M["m00"]), int(M["m01"] / M["m00"]))
# if the radius meets a minimum size, draw the circle and centroid on the frame
if radius > 10:
cv2.circle(frame, (int(x), int(y)), int(radius), (0, 255, 255), 2)
cv2.circle(frame, center, 5, (0, 0, 255), -1)
# add a text label to the frame
cv2.putText(frame, "Fire Detected", (10, 30), cv2.FONT_HERSHEY_SIMPLEX, 0.7, (0, 0, 255), 2)
# show the frame
cv2.imshow("Fire Detection Camera", frame)
key = cv2.waitKey(1) & 0xFF
# if the 'q' key is pressed, stop the loop
if key == ord("q"):
break
# release the video capture device and close all windows
cap.release()
cv2.destroyAllWindows()
```
This code uses HSV color space to isolate the "fire" color in the video stream, and then performs a series of image processing techniques to identify and locate any fire within the frame. If a fire is detected, the code draws a circle and centroid around it and adds a text label to the frame. You can customize the code to suit your specific needs, such as adjusting the color thresholds or adding additional processing steps.
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