在LED等下拍照频闪
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在LED等下拍照频闪
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你这不可能是LED,LED频率很快的,不会影响OpenMV,估计是荧光灯。
暂时的办法:
运行下面的代码:先改exposure_us,直到不频闪,注意画面亮度会改变。然后再增加gain_db把画面亮度变大。import sensor, image, time sensor.reset() # Reset and initialize the sensor. sensor.set_pixformat(sensor.RGB565) # Set pixel format to RGB565 (or GRAYSCALE) sensor.set_framesize(sensor.QVGA) # Set frame size to QVGA (320x240) sensor.set_auto_exposure(False, \ exposure_us = 100000) sensor.set_auto_gain(False, gain_db=1) sensor.skip_frames(time = 2000) # Wait for settings take effect. clock = time.clock() # Create a clock object to track the FPS. while(True): clock.tick() # Update the FPS clock. img = sensor.snapshot() # Take a picture and return the image. print(clock.fps())
如果有条件,建议换个灯,或者加一个补光灯。https://singtown.com/product/50776/openmv-light-shield/