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21 lines
876 B
Python
21 lines
876 B
Python
# LetNet Example
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import sensor, image, time
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sensor.reset() # Reset and initialize the sensor.
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sensor.set_contrast(3)
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sensor.set_pixformat(sensor.GRAYSCALE) # Set pixel format to RGB565 (or GRAYSCALE)
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sensor.set_framesize(sensor.VGA) # Set frame size to QVGA (320x240)
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sensor.set_windowing((128, 128)) # Set 128x128 window.
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sensor.skip_frames(time = 2000) # Wait for settings take effect.
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sensor.set_auto_gain(False)
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sensor.set_auto_exposure(False)
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while(True):
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img = sensor.snapshot()
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# NOTE: Uncomment to detect dark numbers on white background
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# img.invert()
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out = img.find_number(roi=(img.width()//2-14, img.height()//2-14, 28, 28))
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img.draw_rectangle((img.width()//2-15, img.height()//2-15, 30, 30))
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if out[1] > 5: # Confidence level
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print("Number: %d Confidence: %0.2f" %(out[0], out[1]))
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