OPEN MV捕捉最大色块_openmv识别最大色块

OPEN MV捕捉最大色块

import image,sensor,time
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(100)
red=(8, 69, -4, 90, -42, 68)   #设置阈值
white=(0, 55, -128, 127, -128, 127)
gress=(59, 39, -24, -66, 53, 19)
while(True):
    img=sensor.snapshot()
    all_blobs = img.find_blobs([red,white,gress],merge=True)#捕捉红、白、绿三色色块
    blobs = img.find_blobs([gress])#捕捉绿色色块
    white_blobs = img.find_blobs([white],merge=True)
    gress_blobs = img.find_blobs([gress],merge=True)
    s,x1,y1,w1,h1=0,0,0,0,0
    for i in blobs:#此方法为在嵌有字典的列表中索引值，i为每一个字典
        if i[2]*i[3] > s: #用类似冒泡排序一样找出色块最大面积
            s = i[2]*i[3]
            x1=i[0]
            y1=i[1]
            w1=i[2]
            h1=i[3]
    print("s",s)
    img.draw_rectangle((x1,y1,w1,h1),color=(255,0,0))#画框语句位于while循环中，做到每帧画一次
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