我只想识别我roi区域的那一块，可是我的roi加进去好像没起到作用

[k5r1]

import sensor, image, time

from pyb import UART

sensor.reset()
sensor.set_pixformat(sensor.RGB565) # grayscale is faster
sensor.set_framesize(sensor.QQVGA)
sensor.skip_frames(time = 2000)
clock = time.clock()

uart = UART(3,115200)
uart.init(115200, bits=8, parity=None, stop=1)
area= (66, 100, -31, 85, -8, 94)




while(True):
    clock.tick()


    img = sensor.snapshot().lens_corr(strength = 1.8, zoom = 1.0)
    for c in img.find_circles(threshold = 2000, x_margin = 10, y_margin = 10, r_margin = 10,
            r_min = 2, r_max = 15, r_step = 2):
        roi=(18,7,113,106)      #感兴趣区域
        img.draw_circle(area,c.x(), c.y(), c.r(), color = (255, 0, 0))#画圆  用红线框出
        x=int(c.x())
        y=int(c.y())
        data = bytearray([0xb3,x,y,0x5b])
        uart.write(data)
        print(x,y)

[kidswong999]

改成：

 for c in img.find_circles(threshold = 2000, x_margin = 10, y_margin = 10, r_margin = 10,
            r_min = 2, r_max = 15, r_step = 2, roi=(18,7,113,106) ):