openmv/scripts/examples/06-Video-Recording/gif_on_movement.py

60 lines
2.1 KiB
Python

# GIF Video Recording on Movement Example
#
# Note: You will need an SD card to run this example.
#
# You can use your OpenMV Cam to record gif files. You can either feed the
# recorder object RGB565 frames or Grayscale frames. Use photo editing software
# like GIMP to compress and optimize the Gif before uploading it to the web.
#
# 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, gif, 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.QQVGA) # or sensor.QVGA (or others)
sensor.skip_frames(time = 2000) # Let new settings take affect.
sensor.set_auto_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(time = 2000) # 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")
stats = img.statistics()
# Stats 5 is the max of the lighting color channel. The below code
# triggers when the lighting max for the whole image goes above 20.
# The lighting difference maximum should be zero normally.
if (stats[5] > 20):
diff -= 1
g = gif.Gif("example-%d.gif" % pyb.rng(), loop=True)
clock = time.clock() # Tracks FPS.
print("You're on camera!")
for i in range(100):
clock.tick()
# clock.avg() returns the milliseconds between frames - gif delay is in
g.add_frame(sensor.snapshot(), delay=int(clock.avg()/10)) # centiseconds.
print(clock.fps())
g.close()
pyb.LED(BLUE_LED_PIN).off()
print("Restarting...")