例程讲解04-Image-Filters->grayscale_binary_filter灰度二值化

# 灰度二值化例程
#
# 这个脚本展示了二值图像滤波。
# 这个脚本是很原始的测试,但是对于如何使用二值化还是很有用的。


import pyb, sensor, image, math

sensor.reset()
sensor.set_framesize(sensor.QVGA)
sensor.set_pixformat(sensor.GRAYSCALE)

low_threshold = (0, 50)
high_threshold = (205, 255)

while(True):
    # Test low threshold
    for i in range(100):
        img = sensor.snapshot()
        img.binary([low_threshold])
        #image.binary(thresholds, invert=False)此函数将在thresholds内的
        #图像部分的全部像素变为1白,将在阈值外的部分全部像素变为0黑。invert将图像
        #的0 1(黑 白)进行反转,默认为false不反转。

    # Test high threshold
    for i in range(100):
        img = sensor.snapshot()
        img.binary([high_threshold])
    # Test not low threshold
    for i in range(100):
        img = sensor.snapshot()
        img.binary([low_threshold], invert = 1)
    # Test not high threshold
    for i in range(100):
        img = sensor.snapshot()
        img.binary([high_threshold], invert = 1)

星瞳科技OpenMV官方中文文档函数讲解:

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