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rgb_to_grayscale()函数怎么使用?传入参数是什么?返回值怎么接收处理?有没有例子呢?
在中文文档可以看到,http://doc.singtown.cc/openmv_zh/library/omv.image.html?highlight=rgb_to_grayscale#image.rgb_to_grayscale
只是一个函数而已,计算颜色用的,rgb_to_grayscale((255,255,255))