先识别红再识别绿后识别蓝，没有识别，则等待。求助

[13542749802]

在问下thresholds = [(32, 48, 54, 70, 31, 59),
(28, 71, -128, -24, 13, 42),
(38, 62, -7, 31, -79, -41)]如何按顺序去识别呢，比如先识别红，没有识别到则等待，有就继续，绿以此类推

[kidswong999]

https://forum.singtown.com/topic/1735/如何识别三种颜色-而且能够分别记下坐标

[13542749802]

@kidswong999 需要判断颜色的code()吗

[kidswong999]

@13542749802 不需要

[13542749802]

@kidswong999

import sensor, image, time,pyb

from pyb import UART

#初始化串口3
uart = UART(3,115200)
uart.init(115200,bits = 8,parity = None,stop = 1)

#初始化RGB
red_led = pyb.LED(1)
grean_led = pyb.LED(2)
blue_led = pyb.LED(3)

#关闭RGB灯
red_led.off()
grean_led.off()
blue_led.off()

red_color = (32, 48, 54, 70, 31, 59) # 一般情况下的红色阈值
grean_color  = (42, 71, -63, -29, 16, 42) # 一般情况下的绿色阈值
blue_color = (38, 62, -7, 31, -79, -41) # 一般情况下的蓝色阈值




# 标记当前识别的颜色
def markCurColor(img, cName, cRgb):
    img.draw_string(0, 0, cName, color = cRgb)

# 如果是红色，执行此函数
def doWithRed(img):
    markCurColor(img, "RED", (255, 0, 0))
    red_led.on()
    grean_led.off()
    blue_led.off()
    uart.write("red_ok\r\n")

# 如果是绿色，执行此函数
def doWithGreen(img):
    markCurColor(img, "GREEN", (0, 255, 0))
    grean_led.on()
    red_led.off()
    blue_led.off()
    uart.write("grean_ok\r\n")
# 如果是绿色，执行此函数
def doWithBlue(img):
    markCurColor(img, "BLUE", (0, 0, 255))
    blue_led.on()
    red_led.off()
    grean_led.off()
    uart.write("blue_ok\r\n")

# 比较两个色块大小的函数
def compareBlob(blob1, blob2):
    tmp = blob1.pixels() - blob2.pixels()
    if tmp == 0:
        return 0;
    elif tmp > 0:
        return 1;
    else:
        return -1;


def find_max(blobs):
    max_size=0
    for blob in blobs:
        if blob[2]*blob[3] > max_size:
            max_blob=blob
            max_size = blob[2]*blob[3]
    return max_blob

def fun():
    while(True):
        if uart.any():
            uart_buf = uart.readline()
            print(uart_buf)
            if uart_buf == b'0x01':

                sensor.reset()
                sensor.set_pixformat(sensor.RGB565)
                sensor.set_framesize(sensor.QQVGA)
                sensor.skip_frames(time = 2000)
                sensor.set_auto_gain(False)
                sensor.set_auto_whitebal(False)
                sensor.set_auto_exposure(False, 1500)#这里设置曝光时间
                sensor.skip_frames(time = 2000)
                clock = time.clock()
                while(True):
                    clock.tick()
                    img = sensor.snapshot()
                    red_blob = img.find_blobs([red_color], pixels_threshold=200, area_threshold=200, merge=True)
                    if red_blob:
                        max_size=0
                        for blob in red_blob:
                            if blob[2]*blob[3] > max_size:
                                max_blob=blob
                                max_size = blob[2]*blob[3]
                                img.draw_rectangle(max_blob.rect())
                                img.draw_cross(max_blob.cx(), max_blob.cy()) # cx, cy
                                doWithRed(img)
                    else:
                        blue_led.off()
                        red_led.off()
                        grean_led.off()
                    grean_blob = img.find_blobs([grean_color], pixels_threshold=200, area_threshold=200, merge=True)
                    if grean_blob:
                        max_size=0
                        for blob in grean_blob:
                            if blob[2]*blob[3] > max_size:
                                max_blob=blob
                                max_size = blob[2]*blob[3]
                                img.draw_rectangle(max_blob.rect())
                                img.draw_cross(max_blob.cx(), max_blob.cy()) # cx, cy
                                doWithGreen(img)
                    else:
                        blue_led.off()
                        red_led.off()
                        grean_led.off()
                    blue_blob = img.find_blobs([blue_color], pixels_threshold=200, area_threshold=200, merge=True)
                    if blue_blob:
                        max_size=0
                        for blob in blue_blob:
                            if blob[2]*blob[3] > max_size:
                                max_blob=blob
                                max_size = blob[2]*blob[3]
                                img.draw_rectangle(max_blob.rect())
                                img.draw_cross(max_blob.cx(), max_blob.cy()) # cx, cy
                                doWithBlue(img)
                    else:
                        blue_led.off()
                        red_led.off()
                        grean_led.off()


            if uart_buf == b'0x02':
                pase


if __name__=='__main__':
    fun()

按你那样，为什么我这里的绿色就识别不到了，但是只判断绿色的话就识别的到

[kidswong999]

@13542749802 你的代码有两个死循环