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38 lines
1.1 KiB
Python
38 lines
1.1 KiB
Python
# Find Data Matrices w/ Lens Zoom Example
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#
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# This example shows off how easy it is to detect data matrices using the
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# OpenMV Cam M7. Data matrices detection does not work on the M4 Camera.
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import sensor
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import time
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import math
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sensor.reset()
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sensor.set_pixformat(sensor.RGB565)
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sensor.set_framesize(sensor.VGA)
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sensor.set_windowing((320, 240)) # 2x Zoom
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sensor.skip_frames(time=2000)
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sensor.set_auto_gain(False) # must turn this off to prevent image washout...
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sensor.set_auto_whitebal(False) # must turn this off to prevent image washout...
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clock = time.clock()
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while True:
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clock.tick()
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img = sensor.snapshot()
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matrices = img.find_datamatrices()
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for matrix in matrices:
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img.draw_rectangle(matrix.rect(), color=(255, 0, 0))
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print_args = (
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matrix.rows(),
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matrix.columns(),
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matrix.payload(),
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(180 * matrix.rotation()) / math.pi,
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clock.fps(),
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)
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print(
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'Matrix [%d:%d], Payload "%s", rotation %f (degrees), FPS %f' % print_args
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)
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if not matrices:
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print("FPS %f" % clock.fps())
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