# Untitled - By: xrj - 周一 8月 6 2018
import sensor, image, time,pyb
sensor.reset()
sensor.set_pixformat(sensor.GRAYSCALE)
sensor.set_framesize(sensor.QVGA)
sensor.set_windowing((310,240))
sensor.skip_frames(time = 2000)
clock = time.clock()
while(True):
clock.tick()
img = sensor.snapshot()
high_threshold = (160, 255) #二值化范围
img.gaussian(1) #模糊滤波
img.binary([high_threshold]) #二值化
img.erode(3)
for c in img.find_circles(threshold = 25000, x_margin = 10, y_margin = 10, r_margin = 70,r_min = 70, r_max =100, r_step = 2):
img.draw_circle(c.x(), c.y(), c.r(), color = (255, 0, 0))
可以看到图中运行结果里圆与实际希望的圆有一段差距,这个可以修正吗