openmv在识别色块中为什么一直出现这种错误

[3icr]

import sensor, image, time

line_threshold = (2, 51, -21, 65, -17, 18)

sensor.reset()

sensor.set_pixformat(sensor.RGB565)

sensor.set_framesize(sensor.QVGA)

sensor.skip_frames(10)

sensor.set_auto_whitebal(False)

clock = time.clock()

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

while(True):
    clock.tick()
    img = sensor.snapshot()
    blobs = img.find_blobs([line_threshold], x_stride=10)
    if blobs:
            max_blob=find_max(blobs)
            if int(max_blob.w()/max_blob.h())>5 and max_blob.w()>200:
                img.draw_rectangle(max_blob[0:4])
                img.draw_cross(max_blob[5], max_blob[6])
                print(max_blob[5], max_blob[6])
                print(clock.fps())

[kidswong999]

https://forum.singtown.com/topic/3865/sensor-qvga如何在程序中途转换成sensor-vga的形式

[snu3]

sensor.set_framesize(sensor.QVGA)
改为
sensor.set_framesize(sensor.QQVGA)