openmv/usr/examples/06-Video-Recording/mjpeg_on_movement.py
Kwabena W. Agyeman 9e5d379c18 Remove old code.
Pixels, centroid, and orientation are calculated in the blob code now.
As for threshold, it is no longer needed (plus, it required storing a
secondary image in RAM which isn't really something we can handle).
2016-04-09 19:32:14 -04:00

58 lines
2.0 KiB
Python

# MJPEG Video Recording on Movement Example
#
# Note: You will need an SD card to run this example.
#
# You can use your OpenMV Cam to record mjpeg files. You can either feed the
# recorder object JPEG frames or RGB565/Grayscale frames. Once you've finished
# recording a Mjpeg file you can use VLC to play it. If you are on Ubuntu then
# the built-in video player will work too.
#
# This example demonstrates using frame differencing with your OpenMV Cam to do
# motion detection. After motion is detected your OpenMV Cam will take video.
import sensor, image, time, mjpeg, pyb, os
RED_LED_PIN = 1
BLUE_LED_PIN = 3
sensor.reset() # Initialize the camera sensor.
sensor.set_pixformat(sensor.RGB565) # or sensor.GRAYSCALE
sensor.set_framesize(sensor.QVGA) # or sensor.QQVGA (or others)
sensor.skip_frames(10) # Let new settings take affect.
sensor.set_whitebal(False) # Turn off white balance.
if not "temp" in os.listdir(): os.mkdir("temp") # Make a temp directory
while(True):
pyb.LED(RED_LED_PIN).on()
print("About to save background image...")
sensor.skip_frames(60) # Give the user time to get ready.
pyb.LED(RED_LED_PIN).off()
sensor.snapshot().save("temp/bg.bmp")
print("Saved background image - Now detecting motion!")
pyb.LED(BLUE_LED_PIN).on()
diff = 10 # We'll say we detected motion after 10 frames of motion.
while(diff):
img = sensor.snapshot()
img.difference("temp/bg.bmp")
for blob_l in img.find_blobs([(20, 100, -128, 127, -128, 127)]):
for blob in blob_l:
# Over 100 pixels need to change to detect motion.
if (diff and (blob[4] > 100)): diff -= 1
m = mjpeg.Mjpeg("example-%d.mjpeg" % pyb.rng())
clock = time.clock() # Tracks FPS.
print("You're on camera!")
for i in range(200):
clock.tick()
m.add_frame(sensor.snapshot())
print(clock.fps())
m.close(clock.fps())
pyb.LED(BLUE_LED_PIN).off()
print("Restarting...")