颜色识别 索引问题 超出索引

[cg26]

为什么我这样索引会有错误呢？我已经赋值给他了 不是应该跟blob的数值相等吗？

threshold_index = 0 # 0 for red, 1 for green, 2 for blue
foxiang=0
shuihu=0
dingshuji=0

# Color Tracking Thresholds (L Min, L Max, A Min, A Max, B Min, B Max)
# The below thresholds track in general red/green/blue things. You may wish to tune them...
thresholds = [(100, 20, -122, 127, -128, 127), # 黑色阈值
              (34, 58, -128, 127, 32, 127), # 佛像阈值
              (7, 58, 15, 38, -30, 11)] #紫色水壶阈值


sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(time = 2000)
sensor.set_auto_gain(False) # must be turned off for color tracking
sensor.set_auto_whitebal(False) # must be turned off for color tracking
clock = time.clock()


while(True):
    clock.tick()
    img = sensor.snapshot()
    foxiang=img.find_blobs([thresholds[1]])
    if foxiang:
        print("坐标为",foxiang[5])
    print(clock.fps())

[kidswong999]

https://book.openmv.cc/image/blob.html#blobs是一个列表

find_blobs返回的是多个色块。