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