Hi I am new to micropython and the open MV cam h7. I am attempting to control a motor when a color threshold is detected. I attached my code, can you tell me if I am going down the right path?
# Multi Color Blob Tracking Example # # This example shows off multi color blob tracking using the OpenMV Cam. import sensor, image, time, math # Color Tracking Thresholds (L Min, L Max, A Min, A Max, B Min, B Max) # The below thresholds track in general red/green things. You may wish to tune them... thresholds = [(34, 54, 90, 45, 48, -116), # generic_red_thresholds (30, 100, -64, -8, -32, 32), # generic_green_thresholds (0, 15, 0, 40, -80, -20)] # generic_blue_thresholds # You may pass up to 16 thresholds above. However, it's not really possible to segment any # scene with 16 thresholds before color thresholds start to overlap heavily. sensor.reset() sensor.set_pixformat(sensor.RGB565) sensor.set_framesize(sensor.QVGA) sensor.skip_frames(time = 2000) sensor.set_auto_gain(False) # must be turned off for color tracking sensor.set_auto_whitebal(False) # must be turned off for color tracking clock = time.clock() # Only blobs that with more pixels than "pixel_threshold" and more area than "area_threshold" are # returned by "find_blobs" below. Change "pixels_threshold" and "area_threshold" if you change the # camera resolution. Don't set "merge=True" becuase that will merge blobs which we don't want here. counter = 0 StartTime = clock EndTime = clock + clock.tick(1000) while(True): clock.tick() img = sensor.snapshot() for blob in img.find_blobs(thresholds, pixels_threshold=200, area_threshold=200): # These values depend on the blob not being circular - otherwise they will be shaky. if blob.elongation() > 0.5: img.draw_edges(blob.min_corners(), color=(255,0,0)) img.draw_line(blob.major_axis_line(), color=(0,255,0)) img.draw_line(blob.minor_axis_line(), color=(0,0,255)) # These values are stable all the time. img.draw_rectangle(blob.rect()) img.draw_cross(blob.cx(), blob.cy()) # Adds to Counter to show that a Rectangle was Drawn. if counter >= 30: # Turn off Motors. if clock.tick() == 1000: # Code for Motors to turnoff if blob.color == blob.red() # Code for sorting to the red chute if blob.color == blob.blue() # Code for sorting to the blue chute if blob.color == blob.green() # Code for sorting to the green chute # Note - the blob rotation is unique to 0-180 only. img.draw_keypoints([(blob.cx(), blob.cy(), int(math.degrees(blob.rotation())))], size=20) print(clock.fps())