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50 lines
1.7 KiB
Python
50 lines
1.7 KiB
Python
# This work is licensed under the MIT license.
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# Copyright (c) 2013-2023 OpenMV LLC. All rights reserved.
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# https://github.com/openmv/openmv/blob/master/LICENSE
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#
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# Snapshot on Movement Example
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#
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# Note: You will need an SD card to run this example.
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#
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# This example demonstrates using frame differencing with your OpenMV Cam to do
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# motion detection. After motion is detected your OpenMV Cam will take picture.
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import sensor
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import random
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import os
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import machine
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sensor.reset() # Reset and initialize the sensor.
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sensor.set_pixformat(sensor.RGB565) # Set pixel format to RGB565 (or GRAYSCALE)
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sensor.set_framesize(sensor.QVGA) # Set frame size to QVGA (320x240)
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sensor.skip_frames(time=2000) # Wait for settings take effect.
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sensor.set_auto_whitebal(False) # Turn off white balance.
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led = machine.LED("LED_RED")
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if not "temp" in os.listdir():
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os.mkdir("temp") # Make a temp directory
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while True:
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print("About to save background image...")
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sensor.skip_frames(time=2000) # Give the user time to get ready.
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sensor.snapshot().save("temp/bg.bmp")
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print("Saved background image - Now detecting motion!")
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diff = 10 # We'll say we detected motion after 10 frames of motion.
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while diff:
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img = sensor.snapshot()
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img.difference("temp/bg.bmp")
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stats = img.statistics()
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# Stats 5 is the max of the lighting color channel. The below code
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# triggers when the lighting max for the whole image goes above 20.
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# The lighting difference maximum should be zero normally.
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if stats[5] > 20:
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diff -= 1
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led.on()
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print("Movement detected! Saving image...")
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sensor.snapshot().save("temp/snapshot-%d.jpg" % random.getrandbits(32)) # Save Pic.
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led.off()
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