openmv/scripts/examples/04-Barcodes/qrcodes_with_lens_zoom.py

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806 B
Python

# This work is licensed under the MIT license.
# Copyright (c) 2013-2023 OpenMV LLC. All rights reserved.
# https://github.com/openmv/openmv/blob/master/LICENSE
#
# QRCode Example
#
# This example shows the power of the OpenMV Cam to detect QR Codes
# without needing lens correction.
import sensor
import time
sensor.reset()
sensor.set_pixformat(sensor.GRAYSCALE)
sensor.set_framesize(sensor.VGA)
sensor.set_windowing((240, 240)) # look at center 240x240 pixels of the VGA resolution.
sensor.skip_frames(time=2000)
sensor.set_auto_gain(False) # must turn this off to prevent image washout...
clock = time.clock()
while True:
clock.tick()
img = sensor.snapshot()
for code in img.find_qrcodes():
img.draw_rectangle(code.rect(), color=127)
print(code)
print(clock.fps())