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Add negate example.
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scripts/examples/04-Image-Filters/negative.py
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scripts/examples/04-Image-Filters/negative.py
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# Negative Example
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#
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# This example shows off negating the image. This is not a particularly
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# useful method but it can come in handy once in a while.
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import sensor, image, time
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sensor.reset() # Initialize the camera sensor.
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sensor.set_pixformat(sensor.RGB565) # or sensor.GRAYSCALE
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sensor.set_framesize(sensor.QVGA) # or sensor.QQVGA (or others)
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sensor.skip_frames(time = 2000) # Let new settings take affect.
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clock = time.clock() # Tracks FPS.
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while(True):
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clock.tick() # Track elapsed milliseconds between snapshots().
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img = sensor.snapshot().negate()
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print(clock.fps()) # Note: Your OpenMV Cam runs about half as fast while
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# connected to your computer. The FPS should increase once disconnected.
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